Vulnerabilities > CVE-2017-5754 - Information Exposure vulnerability in multiple products

CVSS 4.7 - MEDIUM

Attack vector

LOCAL

Attack complexity

MEDIUM

Privileges required

NONE

Confidentiality impact

COMPLETE

Integrity impact

NONE

Availability impact

NONE

local

intel

arm

CWE-200

nessus

NVD

Published: 2018-01-04

Updated: 2021-11-19

Summary

Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache.

Vulnerable Configurations

Part	Description	Count
Hardware	Intel Intel Pentium N N3700 Intel Pentium N N3710 Intel Pentium N N3520 Intel Pentium N N3510 Intel Pentium N N3540 Intel Pentium N N3530 Intel Pentium N N4200 Intel Celeron N N3000 Intel Celeron N N3010 Intel Celeron N N3050 Intel Celeron N N2930 Intel Celeron N N2920 Intel Celeron N N2808 Intel Celeron N N2807 Intel Celeron N N4100 Intel Celeron N N4000 Intel Celeron N N3450 Intel Celeron N N2940 Intel Celeron N N2815 Intel Celeron N N2810 Intel Celeron N N3160 Intel Celeron N N3350 Intel Celeron N N2830 Intel Celeron N N2820 Intel Celeron N N3060 Intel Celeron N N3150 Intel Celeron N N2910 Intel Celeron N N2840 Intel Celeron N N2806 Intel Celeron N N2805 Intel Celeron J J3060 Intel Celeron J J1900 Intel Celeron J J3455 Intel Celeron J J3355 Intel Celeron J J3160 Intel Celeron J J4105 Intel Celeron J J4005 Intel Celeron J J1750 Intel Celeron J J1850 Intel Celeron J J1800 Intel Atom X3 C3295Rk Intel Atom X3 C3235Rk Intel Atom X3 C3405 Intel Atom X3 C3265Rk Intel Atom X3 C3445 Intel Atom X3 C3200Rk Intel Atom X3 C3130 Intel Atom X3 C3230Rk Intel Atom X3 C3205Rk Intel Atom Z Z3775D Intel Atom Z Z3775 Intel Atom Z Z3736F Intel Atom Z Z3735G Intel Atom Z Z3560 Intel Atom Z Z3530 Intel Atom Z Z2480 Intel Atom Z Z2460 Intel Atom Z Z3795 Intel Atom Z Z3785 Intel Atom Z Z3740D Intel Atom Z Z3740 Intel Atom Z Z3736G Intel Atom Z Z3580 Intel Atom Z Z3570 Intel Atom Z Z2560 Intel Atom Z Z2520 Intel Atom Z Z3745D Intel Atom Z Z3745 Intel Atom Z Z3735D Intel Atom Z Z3590 Intel Atom Z Z2760 Intel Atom Z Z2580 Intel Atom Z Z3770D Intel Atom Z Z3770 Intel Atom Z Z3735F Intel Atom Z Z3735E Intel Atom Z Z3480 Intel Atom Z Z3460 Intel Atom Z Z2420 Intel Atom C C3308 Intel Atom C C3338 Intel Atom C C3808 Intel Atom C C3850 Intel Atom C C2738 Intel Atom C C2718 Intel Atom C C2750 Intel Atom C C2730 Intel Atom C C3750 Intel Atom C C3758 Intel Atom C C3958 Intel Atom C C2758 Intel Atom C C2338 Intel Atom C C2308 Intel Atom C C3558 Intel Atom C C3708 Intel Atom C C3950 Intel Atom C C3955 Intel Atom C C2508 Intel Atom C C2358 Intel Atom C C2516 Intel Atom C C2350 Intel Atom C C2316 Intel Atom C C3508 Intel Atom C C3538 Intel Atom C C3858 Intel Atom C C3830 Intel Atom C C2558 Intel Atom C C2538 Intel Atom C C2518 Intel Atom C C2550 Intel Atom C C2530 Intel Atom E E3815 Intel Atom E E3805 Intel Atom E E3827 Intel Atom E E3826 Intel Atom E E3825 Intel Atom E E3845 Intel Pentium J J2900 Intel Pentium J J2850 Intel Pentium J J4205 Intel Pentium J J3710 Intel Core I5 3550S Intel Core I5 3550 Intel Core I5 3437U Intel Core I5 3427U Intel Core I5 3339Y Intel Core I5 3337U Intel Core I5 2557M Intel Core I5 2550K Intel Core I5 2500K Intel Core I5 2500 Intel Core I5 2405S Intel Core I5 2400S Intel Core I5 680 Intel Core I5 480M Intel Core I5 650 Intel Core I5 580M Intel Core I5 520E Intel Core I5 3610Me Intel Core I5 3475S Intel Core I5 3470T Intel Core I5 3380M Intel Core I5 3360M Intel Core I5 3330S Intel Core I5 3330 Intel Core I5 2540M Intel Core I5 2537M Intel Core I5 2467M Intel Core I5 2450P Intel Core I5 2400 Intel Core I5 2390T Intel Core I5 760 Intel Core I5 750S Intel Core I5 750 Intel Core I5 560Um Intel Core I5 560M Intel Core I5 460M Intel Core I5 450M Intel Core I5 3570K Intel Core I5 3570 Intel Core I5 3450 Intel Core I5 3439Y Intel Core I5 3340M Intel Core I5 3340 Intel Core I5 3317U Intel Core I5 3230M Intel Core I5 2500T Intel Core I5 2500S Intel Core I5 2430M Intel Core I5 2410M Intel Core I5 2310 Intel Core I5 2300 Intel Core I5 660 Intel Core I5 655K Intel Core I5 520Um Intel Core I5 520M Intel Core I5 3570S Intel Core I5 3570T Intel Core I5 3470S Intel Core I5 3470 Intel Core I5 3450S Intel Core I5 3350P Intel Core I5 3340S Intel Core I5 3320M Intel Core I5 3210M Intel Core I5 2520M Intel Core I5 2515E Intel Core I5 2510E Intel Core I5 2450M Intel Core I5 2435M Intel Core I5 2380P Intel Core I5 2320 Intel Core I5 670 Intel Core I5 661 Intel Core I5 540Um Intel Core I5 540M Intel Core I5 430Um Intel Core I5 430M Intel Core I5 470Um Intel Core I5 8400 Intel Core I5 8600K Intel Core I5 6600 Intel Core I5 6500Te Intel Core I5 6402P Intel Core I5 6350Hq Intel Core I5 6300Hq Intel Core I5 6600T Intel Core I5 6585R Intel Core I5 6440Eq Intel Core I5 6440Hq Intel Core I5 6267U Intel Core I5 6287U Intel Core I5 5287U Intel Core I5 5257U Intel Core I5 5575R Intel Core I5 5350U Intel Core I5 4690K Intel Core I5 4690S Intel Core I5 4590S Intel Core I5 4590T Intel Core I5 4460S Intel Core I5 4460 Intel Core I5 4300Y Intel Core I5 4302Y Intel Core I5 4200H Intel Core I5 4200M Intel Core I5 4210Y Intel Core I5 4220Y Intel Core I5 6685R Intel Core I5 6600K Intel Core I5 6400 Intel Core I5 6400T Intel Core I5 6300U Intel Core I5 6200U Intel Core I5 6260U Intel Core I5 5350H Intel Core I5 5300U Intel Core I5 4670 Intel Core I5 4670K Intel Core I5 4690T Intel Core I5 4570 Intel Core I5 4422E Intel Core I5 4410E Intel Core I5 4440S Intel Core I5 4440 Intel Core I5 4308U Intel Core I5 4310M Intel Core I5 4310U Intel Core I5 4200U Intel Core I5 4200Y Intel Core I5 4250U Intel Core I5 4258U Intel Core I5 4670R Intel Core I5 4670S Intel Core I5 4570R Intel Core I5 4570S Intel Core I5 4570T Intel Core I5 4402Ec Intel Core I5 4402E Intel Core I5 4430S Intel Core I5 4430 Intel Core I5 4330M Intel Core I5 4340M Intel Core I5 4202Y Intel Core I5 4210H Intel Core I5 4260U Intel Core I5 4278U Intel Core I5 8350U Intel Core I5 8250U Intel Core I5 6500 Intel Core I5 6500T Intel Core I5 6442Eq Intel Core I5 6360U Intel Core I5 5675R Intel Core I5 5675C Intel Core I5 5250U Intel Core I5 5200U Intel Core I5 4670T Intel Core I5 4690 Intel Core I5 4570Te Intel Core I5 4590 Intel Core I5 4400E Intel Core I5 4460T Intel Core I5 4300M Intel Core I5 4300U Intel Core I5 4350U Intel Core I5 4360U Intel Core I5 4210M Intel Core I5 4210U Intel Core I5 4288U Intel Core I3 3229Y Intel Core I3 3227U Intel Core I3 3130M Intel Core I3 3120Me Intel Core I3 2367M Intel Core I3 2365M Intel Core I3 2312M Intel Core I3 2310M Intel Core I3 2105 Intel Core I3 2102 Intel Core I3 530 Intel Core I3 380Um Intel Core I3 3250T Intel Core I3 3250 Intel Core I3 3220 Intel Core I3 3217Ue Intel Core I3 3110M Intel Core I3 2377M Intel Core I3 2348M Intel Core I3 2340Ue Intel Core I3 2330M Intel Core I3 2125 Intel Core I3 2120T Intel Core I3 560 Intel Core I3 390M Intel Core I3 350M Intel Core I3 330Um Intel Core I3 330M Intel Core I3 3225 Intel Core I3 3220T Intel Core I3 3120M Intel Core I3 3115C Intel Core I3 2357M Intel Core I3 2350M Intel Core I3 2310E Intel Core I3 2130 Intel Core I3 2100T Intel Core I3 2100 Intel Core I3 380M Intel Core I3 370M Intel Core I3 3245 Intel Core I3 3240T Intel Core I3 3240 Intel Core I3 3217U Intel Core I3 3210 Intel Core I3 2375M Intel Core I3 2370M Intel Core I3 2330E Intel Core I3 2328M Intel Core I3 2120 Intel Core I3 2115C Intel Core I3 550 Intel Core I3 540 Intel Core I3 330E Intel Core I3 6320 Intel Core I3 6100E Intel Core I3 6100T Intel Core I3 6100Te Intel Core I3 6102E Intel Core I3 6157U Intel Core I3 5157U Intel Core I3 5020U Intel Core I3 5015U Intel Core I3 4330T Intel Core I3 4330Te Intel Core I3 4340 Intel Core I3 4370T Intel Core I3 4100E Intel Core I3 4120U Intel Core I3 4158U Intel Core I3 4130 Intel Core I3 4000M Intel Core I3 4030U Intel Core I3 4030Y Intel Core I3 8100 Intel Core I3 8350K Intel Core I3 6100H Intel Core I3 6100U Intel Core I3 6006U Intel Core I3 6098P Intel Core I3 5010U Intel Core I3 5005U Intel Core I3 4340Te Intel Core I3 4350 Intel Core I3 4100M Intel Core I3 4100U Intel Core I3 4170T Intel Core I3 4170 Intel Core I3 4005U Intel Core I3 4010U Intel Core I3 4350T Intel Core I3 4360 Intel Core I3 4102E Intel Core I3 4110E Intel Core I3 4160T Intel Core I3 4160 Intel Core I3 4010Y Intel Core I3 4012Y Intel Core I3 6300 Intel Core I3 6300T Intel Core I3 6167U Intel Core I3 6100 Intel Core I3 4330 Intel Core I3 4360T Intel Core I3 4370 Intel Core I3 4110M Intel Core I3 4112E Intel Core I3 4150T Intel Core I3 4150 Intel Core I3 4130T Intel Core I3 4020Y Intel Core I3 4025U Intel Core I7 2920Xm Intel Core I7 990X Intel Core I7 3820Qm Intel Core I7 3770T Intel Core I7 3687U Intel Core I7 3667U Intel Core I7 3610Qm Intel Core I7 3610Qe Intel Core I7 2860Qm Intel Core I7 2820Qm Intel Core I7 2670Qm Intel Core I7 2675Qm Intel Core I7 2657M Intel Core I7 2629M Intel Core I7 2620M Intel Core I7 860 Intel Core I7 820Qm Intel Core I7 930 Intel Core I7 880 Intel Core I7 680Um Intel Core I7 660Um Intel Core I7 620Ue Intel Core I7 620M Intel Core I7 965 Intel Core I7 940Xm Intel Core I7 3770 Intel Core I7 3740Qm Intel Core I7 3615Qm Intel Core I7 3615Qe Intel Core I7 3537U Intel Core I7 3520M Intel Core I7 2715Qe Intel Core I7 2710Qe Intel Core I7 2640M Intel Core I7 2637M Intel Core I7 2600S Intel Core I7 980X Intel Core I7 975 Intel Core I7 3770S Intel Core I7 3770K Intel Core I7 3635Qm Intel Core I7 3632Qm Intel Core I7 3630Qm Intel Core I7 3555Le Intel Core I7 3540M Intel Core I7 2760Qm Intel Core I7 2720Qm Intel Core I7 2655Le Intel Core I7 2649M Intel Core I7 2617M Intel Core I7 2610Ue Intel Core I7 720Qm Intel Core I7 610E Intel Core I7 875K Intel Core I7 870S Intel Core I7 660Ue Intel Core I7 660Lm Intel Core I7 620Lm Intel Core I7 620Le Intel Core I7 2960Xm Intel Core I7 920Xm Intel Core I7 3840Qm Intel Core I7 3720Qm Intel Core I7 3689Y Intel Core I7 3612Qm Intel Core I7 3612Qe Intel Core I7 3517Ue Intel Core I7 3517U Intel Core I7 2700K Intel Core I7 2677M Intel Core I7 2635Qm Intel Core I7 2630Qm Intel Core I7 2600 Intel Core I7 920 Intel Core I7 960 Intel Core I7 950 Intel Core I7 940 Intel Core I7 840Qm Intel Core I7 740Qm Intel Core I7 640Lm Intel Core I7 620Um Intel Core I7 2600K Intel Core I7 980 Intel Core I7 970 Intel Core I7 870 Intel Core I7 860S Intel Core I7 640Um Intel Core I7 640M Intel Core I7 7700Hq Intel Core I7 7700 Intel Core I7 7Y75 Intel Core I7 5775C Intel Core I7 5650U Intel Core I7 8700 Intel Core I7 8700K Intel Core I7 7920Hq Intel Core I7 7820Hq Intel Core I7 7660U Intel Core I7 7600U Intel Core I7 7567U Intel Core I7 5750Hq Intel Core I7 5700Eq Intel Core I7 5550U Intel Core I7 5500U Intel Core I7 4910Mq Intel Core I7 4950Hq Intel Core I7 4870Hq Intel Core I7 4700Ec Intel Core I7 4710Mq Intel Core I7 4712Hq Intel Core I7 4800Mq Intel Core I7 4810Mq Intel Core I7 4702Ec Intel Core I7 4702Hq Intel Core I7 4722Hq Intel Core I7 4750Hq Intel Core I7 4770R Intel Core I7 4770S Intel Core I7 4600M Intel Core I7 4600U Intel Core I7 4558U Intel Core I7 4578U Intel Core I7 8550U Intel Core I7 8650U Intel Core I7 7700K Intel Core I7 7700T Intel Core I7 5950Hq Intel Core I7 5850Hq Intel Core I7 5850Eq Intel Core I7 5600U Intel Core I7 5557U Intel Core I7 4900Mq Intel Core I7 4850Hq Intel Core I7 4860Hq Intel Core I7 4702Mq Intel Core I7 4710Hq Intel Core I7 4760Hq Intel Core I7 4770Hq Intel Core I7 4770T Intel Core I7 4770Te Intel Core I7 4610M Intel Core I7 4610Y Intel Core I7 4790K Intel Core I7 4770K Intel Core I7 4771 Intel Core I7 4785T Intel Core I7 4790 Intel Core I7 4650U Intel Core I7 4500U Intel Core I7 7820Hk Intel Core I7 7820Eq Intel Core I7 7560U Intel Core I7 7500U Intel Core I7 5700Hq Intel Core I7 5775R Intel Core I7 4960Hq Intel Core I7 4980Hq Intel Core I7 4700Eq Intel Core I7 4700Hq Intel Core I7 4700Mq Intel Core I7 4712Mq Intel Core I7 4720Hq Intel Core I7 4765T Intel Core I7 4770 Intel Core I7 4790S Intel Core I7 4790T Intel Core I7 4510U Intel Core I7 4550U Intel Xeon X3430 Intel Xeon L3426 Intel Xeon X5560 Intel Xeon Lc5518 Intel Xeon L5530 Intel Xeon L5520 Intel Xeon E5506 Intel Xeon E5504 Intel Xeon X5675 Intel Xeon X5672 Intel Xeon L5638 Intel Xeon L5630 Intel Xeon E5607 Intel Xeon E5606 Intel Xeon X7542 Intel Xeon L7555 Intel Xeon L3406 Intel Xeon W3690 Intel Xeon X5550 Intel Xeon Ec5549 Intel Xeon L5518 Intel Xeon L5508 Intel Xeon E5503 Intel Xeon E5502 Intel Xeon X5670 Intel Xeon X5667 Intel Xeon L5618 Intel Xeon L5609 Intel Xeon E5649 Intel Xeon E5603 Intel Xeon X6550 Intel Xeon L7545 Intel Xeon E7540 Intel Xeon X3450 Intel Xeon X3440 Intel Xeon X5570 Intel Xeon Lc5528 Intel Xeon W5580 Intel Xeon Ec5509 Intel Xeon E5520 Intel Xeon E5507 Intel Xeon X5680 Intel Xeon X5677 Intel Xeon X5647 Intel Xeon L5640 Intel Xeon E5630 Intel Xeon E5620 Intel Xeon X7560 Intel Xeon X7550 Intel Xeon X3480 Intel Xeon X3470 Intel Xeon X3460 Intel Xeon W3680 Intel Xeon W3670 Intel Xeon W5590 Intel Xeon Ec5539 Intel Xeon L5506 Intel Xeon E5540 Intel Xeon E5530 Intel Xeon X5690 Intel Xeon X5687 Intel Xeon X5660 Intel Xeon X5650 Intel Xeon E5645 Intel Xeon E5640 Intel Xeon E6540 Intel Xeon E6510 Intel Xeon E7530 Intel Xeon E7520 Intel Xeon E3 1505L V6 - Intel Xeon E3 1501L V6 - Intel Xeon E3 1501M V6 - Intel Xeon E3 1230 V6 - Intel Xeon E3 1225 V6 - Intel Xeon E3 1558L_V5 Intel Xeon E3 1545M_V5 Intel Xeon E3 1585_V5 Intel Xeon E3 1535M_V6 Intel Xeon E3 1505M_V6 Intel Xeon E3 1575M_V5 Intel Xeon E3 1565L_V5 Intel Xeon E3 1535M_V5 Intel Xeon E3 1515M_V5 Intel Xeon E3 1585L_V5 Intel Xeon E3 1578L_V5 Intel Xeon E3 1285 V6 - Intel Xeon E3 1280 V6 - Intel Xeon E3 1220 V6 - Intel Xeon E3 1245 V6 - Intel Xeon E3 1240 V6 - Intel Xeon E3 1280 V5 - Intel Xeon E3 1275 V5 - Intel Xeon E3 1270 V5 - Intel Xeon E3 1230 V5 - Intel Xeon E3 1225 V5 - Intel Xeon E3 1286L V3 - Intel Xeon E3 1286 V3 - Intel Xeon E3 1270 V3 - Intel Xeon E3 1268L V3 - Intel Xeon E3 1271 V3 - Intel Xeon E3 1240 V3 - Intel Xeon E3 1231 V3 - Intel Xeon E3 1290 V2 - Intel Xeon E3 1280 V2 - Intel Xeon E3 1220 V2 - Intel Xeon E3 12201 V2 - Intel Xeon E3 1260L - Intel Xeon E3 1245 - Intel Xeon E3 1125C - Intel Xeon E 1105C - Intel Xeon E3 1245 V5 - Intel Xeon E3 1240L V5 - Intel Xeon E3 1285 V4 - Intel Xeon E3 1278L V4 - Intel Xeon E3 1281 V3 - Intel Xeon E3 1280 V3 - Intel Xeon E3 1246 V3 - Intel Xeon E3 1245 V3 - Intel Xeon E3 1226 V3 - Intel Xeon E3 1225 V3 - Intel Xeon E3 1265L V2 - Intel Xeon E3 1245 V2 - Intel Xeon E3 1290 - Intel Xeon E3 1280 - Intel Xeon E3 1230 - Intel Xeon E3 1225 - Intel Xeon E5 4660_V4 Intel Xeon E5 4655_V4 Intel Xeon E5 4650_V4 Intel Xeon E5 2699R_V4 Intel Xeon E5 2699_V4 Intel Xeon E5 2683_V4 Intel Xeon E5 2680_V4 Intel Xeon E5 2699_V3 Intel Xeon E5 2698_V3 Intel Xeon E5 4648_V3 Intel Xeon E5 2695_V3 Intel Xeon E5 4610_V3 Intel Xeon E5 2683_V3 Intel Xeon E5 4620_V2 Intel Xeon E5 4627_V2 Intel Xeon E5 4657L_V2 Intel Xeon E5 2690_V2 Intel Xeon E5 2695_V2 Intel Xeon E5 4610 Intel Xeon E5 4620 Intel Xeon E5 4650 Intel Xeon E5 4669_V4 Intel Xeon E5 4667_V4 Intel Xeon E5 4610_V4 Intel Xeon E5 2699A_V4 Intel Xeon E5 2690_V4 Intel Xeon E5 2687W_V4 Intel Xeon E5 2650L_V4 Intel Xeon E5 4660_V3 Intel Xeon E5 4650_V3 Intel Xeon E5 2687W_V3 Intel Xeon E5 4620_V3 Intel Xeon E5 2658_V3 Intel Xeon E5 4640_V4 Intel Xeon E5 4628L_V4 Intel Xeon E5 2698_V4 Intel Xeon E5 2697_V4 Intel Xeon E5 2667_V4 Intel Xeon E5 2660_V4 Intel Xeon E5 4669_V3 Intel Xeon E5 4655_V3 Intel Xeon E5 4640_V3 Intel Xeon E5 2680_V3 Intel Xeon E5 2670_V3 Intel Xeon E5 4640_V2 Intel Xeon E5 2658_V2 Intel Xeon E5 2660_V2 Intel Xeon E5 2697_V2 Intel Xeon E5 4640 Intel Xeon E5 4650L Intel Xeon E5 4603_V2 Intel Xeon E5 4624L_V2 Intel Xeon E5 4650_V2 Intel Xeon E5 2680_V2 Intel Xeon E5 2687W_V2 Intel Xeon E5 4607 Intel Xeon E5 2665 Intel Xeon E5 2667 Intel Xeon E5 2687W Intel Xeon E5 2690 Intel Xeon E5 2670 Intel Xeon E5 2680 Intel Xeon E5 4627_V4 Intel Xeon E5 4620_V4 Intel Xeon E5 2697A_V4 Intel Xeon E5 2695_V4 Intel Xeon E5 2658_V4 Intel Xeon E5 4667_V3 Intel Xeon E5 2697_V3 Intel Xeon E5 2690_V3 Intel Xeon E5 4627_V3 Intel Xeon E5 2667_V3 Intel Xeon E5 2660_V3 Intel Xeon E5 2658A_V3 Intel Xeon E5 4607_V2 Intel Xeon E5 4610_V2 Intel Xeon E5 2667_V2 Intel Xeon E5 2670_V2 Intel Xeon E5 4603 Intel Xeon E5 4617 Intel Xeon E5 2658 Intel Xeon E5 2660 Intel Xeon E5 2640 V4 - Intel Xeon E5 2637 V4 - Intel Xeon E5 2609 V4 - Intel Xeon E5 2608L V4 - Intel Xeon E5 1428L V3 - Intel Xeon E5 1630 V3 - Intel Xeon E5 2650 V3 - Intel Xeon E5 2648L V3 - Intel Xeon E5 2623 V3 - Intel Xeon E5 2620 V3 - Intel Xeon E5 2603 V2 - Intel Xeon E5 1428L V2 - Intel Xeon E5 2618L V2 - Intel Xeon E5 2430 V2 - Intel Xeon E5 2637 V2 - Intel Xeon E5 2640 V2 - Intel Xeon E5 2650 V2 - Intel Xeon E5 2650L V2 - Intel Xeon E5 1620 - Intel Xeon E5 2428L - Intel Xeon E5 2630L - Intel Xeon E5 2643 - Intel Xeon E3 1268L V5 - Intel Xeon E3 1260L V5 - Intel Xeon E3 1220 V5 - Intel Xeon E3 1285L V4 - Intel Xeon E3 1285L V3 - Intel Xeon E3 1285 V3 - Intel Xeon E3 1275 V3 - Intel Xeon E3 1265L V3 - Intel Xeon E3 1230L V3 - Intel Xeon E3 1230 V3 - Intel Xeon E3 1275 V2 - Intel Xeon E3 1270 V2 - Intel Xeon E3 1125C V2 - Intel Xeon E3 1105C V2 - Intel Xeon E3 1240 - Intel Xeon E3 1235 - Intel Xeon E5 2648L V4 - Intel Xeon E5 2643 V4 - Intel Xeon E5 2620 V4 - Intel Xeon E5 2618L V4 - Intel Xeon E5 1630 V4 - Intel Xeon E5 1620 V4 - Intel Xeon E5 2418L V3 - Intel Xeon E5 1660 V3 - Intel Xeon E3 1275 V6 - Intel Xeon E3 1270 V6 - Intel Xeon E3 1505M V5 - Intel Xeon E3 1505L V5 - Intel Xeon E3 1240 V5 - Intel Xeon E3 1235L V5 - Intel Xeon E3 1265L V4 - Intel Xeon E3 1258L V4 - Intel Xeon E3 1276 V3 - Intel Xeon E3 1275L V3 - Intel Xeon E3 1241 V3 - Intel Xeon E3 1240L V3 - Intel Xeon E3 1220L V3 - Intel Xeon E3 1220 V3 - Intel Xeon E3 1240 V2 - Intel Xeon E3 1230 V2 - Intel Xeon E3 1225 V2 - Intel Xeon E3 1275 - Intel Xeon E3 1270 - Intel Xeon E3 12201 - Intel Xeon E3 1220 - Intel Xeon E5 2630 V4 - Intel Xeon E5 2630L V4 - Intel Xeon E5 2603 V4 - Intel Xeon E5 1680 V4 - Intel Xeon E5 2438L V3 - Intel Xeon E5 2408L V3 - Intel Xeon E5 1680 V3 - Intel Xeon E5 2643 V3 - Intel Xeon E5 2640 V3 - Intel Xeon E5 2618L V3 - Intel Xeon E5 2609 V3 - Intel Xeon E5 1620 V2 - Intel Xeon E5 2407 V2 - Intel Xeon E5 2609 V2 - Intel Xeon E5 1660 V2 - Intel Xeon E5 2420 V2 - Intel Xeon E5 2630 V2 - Intel Xeon E5 2448L V2 - Intel Xeon E5 2450 V2 - Intel Xeon E5 2603 - Intel Xeon E5 1428L - Intel Xeon E5 2418L - Intel Xeon E5 2430 - Intel Xeon E5 2650L V3 - Intel Xeon E5 2630 V3 - Intel Xeon E5 2628L V3 - Intel Xeon E5 2403 V2 - Intel Xeon E5 1650 V2 - Intel Xeon E5 2418L V2 - Intel Xeon E5 2628L V2 - Intel Xeon E5 2440 V2 - Intel Xeon E5 2648L V2 - Intel Xeon E5 2470 V2 - Intel Xeon E5 2407 - Intel Xeon E5 2609 - Intel Xeon E5 2620 - Intel Xeon E5 1650 - Intel Xeon E5 2630 - Intel Xeon E5 2440 - Intel Xeon E5 2640 - Intel Xeon E5 2450L - Intel Xeon E5 2470 - Intel Xeon E7 8860 Intel Xeon E7 8850 Intel Xeon E7 4807 Intel Xeon E7 2870 Intel Xeon E7 8893_V4 Intel Xeon E7 8891_V4 Intel Xeon E7 4830_V4 Intel Xeon E7 4820_V4 Intel Xeon E7 8867_V3 Intel Xeon E7 8860_V3 Intel Xeon E7 8870_V2 Intel Xeon E7 8880_V2 Intel Xeon E7 4870_V2 Intel Xeon E7 4860_V2 Intel Xeon E7 2850_V2 Intel Xeon E7 4870 Intel Xeon E7 4860 Intel Xeon E7 2830 Intel Xeon E7 2820 Intel Xeon E7 8870_V4 Intel Xeon E7 8867_V4 Intel Xeon E7 8891_V3 Intel Xeon E7 8890_V3 Intel Xeon E7 8880L_V3 Intel Xeon E7 4820_V3 Intel Xeon E7 4809_V3 Intel Xeon E7 8891_V2 Intel Xeon E7 8893_V2 Intel Xeon E7 4809_V2 Intel Xeon E7 2890_V2 Intel Xeon E7 8837 Intel Xeon E7 8830 Intel Xeon E7 2860 Intel Xeon E7 2850 Intel Xeon E7 8890_V4 Intel Xeon E7 8880_V4 Intel Xeon E7 4809_V4 Intel Xeon E7 8893_V3 Intel Xeon E7 4850_V3 Intel Xeon E7 4830_V3 Intel Xeon E7 8880L_V2 Intel Xeon E7 8890_V2 Intel Xeon E7 4850_V2 Intel Xeon E7 4830_V2 Intel Xeon E7 4820_V2 Intel Xeon E7 8870 Intel Xeon E7 8867L Intel Xeon E7 4850 Intel Xeon E7 4830 Intel Xeon E7 4820 Intel Xeon E7 2803 Intel Xeon E7 8894_V4 Intel Xeon E7 8860_V4 Intel Xeon E7 4850_V4 Intel Xeon E7 8880_V3 Intel Xeon E7 8870_V3 Intel Xeon E7 8850_V2 Intel Xeon E7 8857_V2 Intel Xeon E7 4890_V2 Intel Xeon E7 4880_V2 Intel Xeon E7 2880_V2 Intel Xeon E7 2870_V2 Intel Xeon Bronze 3106 - Intel Xeon Silver 4110 Intel Xeon Silver 4109T Intel Xeon Silver 4116 Intel Xeon Silver 4114T Intel Xeon Silver 4116T Intel Xeon Silver 4108 Intel Xeon Silver 4114 Intel Xeon Silver 4112 Intel Xeon Gold 6146 Intel Xeon Gold 6144 Intel Xeon Gold 6138 Intel Xeon Gold 6136 Intel Xeon Gold 6128 Intel Xeon Gold 6126T Intel Xeon Gold 5118 Intel Xeon Gold 5115 Intel Xeon Gold 6152 Intel Xeon Gold 6150 Intel Xeon Gold 6140M Intel Xeon Gold 6140 Intel Xeon Gold 6132 Intel Xeon Gold 6130T Intel Xeon Gold 5122 Intel Xeon Gold 5120T Intel Xeon Gold 6154 Intel Xeon Gold 6142M Intel Xeon Gold 6142F Intel Xeon Gold 6142 Intel Xeon Gold 6134M Intel Xeon Gold 6134 Intel Xeon Gold 6126F Intel Xeon Gold 6126 Intel Xeon Gold 6148F Intel Xeon Gold 6148 Intel Xeon Gold 6138T Intel Xeon Gold 6138F Intel Xeon Gold 6130F Intel Xeon Gold 6130 Intel Xeon Gold 5120 Intel Xeon Gold 5119T Intel Xeon Platinum 8180 Intel Xeon Platinum 8164 Intel Xeon Platinum 8160T Intel Xeon Platinum 8176 Intel Xeon Platinum 8170M Intel Xeon Platinum 8160 Intel Xeon Platinum 8158 Intel Xeon Platinum 8176M Intel Xeon Platinum 8176F Intel Xeon Platinum 8160M Intel Xeon Platinum 8160F Intel Xeon Platinum 8170 Intel Xeon Platinum 8168 Intel Xeon Platinum 8156 Intel Xeon Platinum 8153 Intel Xeon PHI 7290F Intel Xeon PHI 7290 Intel Xeon PHI 7285 Intel Xeon PHI 7295 Intel Xeon PHI 7230F Intel Xeon PHI 7230 Intel Xeon PHI 7250F Intel Xeon PHI 7250 Intel Xeon PHI 7210F Intel Xeon PHI 7210 Intel Xeon PHI 7235 Intel Core M5 6Y57 Intel Core M5 6Y54 Intel Core M3 6Y30 Intel Core M3 7Y32 Intel Core M3 7Y30 Intel Xeon E5 2448L - Intel Xeon E5 2650 - Intel Xeon E5 2650L - Intel Core M 5Y71 Intel Core M 5Y70 Intel Core M 5Y10C Intel Core M 5Y10A Intel Core M 5Y10 Intel Core M 5Y51 Intel Core M 5Y31 Intel Xeon E5 2648L - Intel Xeon Bronze 3104 - Intel Xeon E5 2650 V4 - Intel Xeon E5 2628L V4 - Intel Xeon E5 2623 V4 - Intel Xeon E5 1660 V4 - Intel Xeon E5 1650 V4 - Intel Xeon E5 2428L V3 - Intel Xeon E5 1620 V3 - Intel Xeon E5 1650 V3 - Intel Xeon E5 2637 V3 - Intel Xeon E5 2630L V3 - Intel Xeon E5 2608L V3 - Intel Xeon E5 2603 V3 - Intel Xeon E5 2620 V2 - Intel Xeon E5 2428L V2 - Intel Xeon E5 2430L V2 - Intel Xeon E5 2630L V2 - Intel Xeon E5 2643 V2 - Intel Xeon E5 2450L V2 - Intel Xeon E5 2403 - Intel Xeon E5 2420 - Intel Xeon E5 1660 - Intel Xeon E5 2430L - Intel Xeon E5 2637 - Intel Xeon E5 2450 - Intel Core M7 6Y75	1058
Hardware	Arm ARM Cortex A 75	1

Common Weakness Enumeration (CWE)

CWE-200 - Information Exposure

Common Attack Pattern Enumeration and Classification (CAPEC)

Subverting Environment Variable Values
The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
Footprinting
An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
Exploiting Trust in Client (aka Make the Client Invisible)
An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
Browser Fingerprinting
An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
Session Credential Falsification through Prediction
This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

Nessus

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_NT_MS18_JAN_4056891.NASL
description	The remote Windows host is missing security update 4056891 or 4057144. It is, therefore, affected by multiple vulnerabilities : - An vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) - An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0744) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0758, CVE-2018-0769, CVE-2018-0770, CVE-2018-0776, CVE-2018-0777, CVE-2018-0781) - An elevation of privilege vulnerability exists in the way that the Windows Kernel API enforces permissions. An attacker who successfully exploited the vulnerability could impersonate processes, interject cross-process communication, or interrupt system functionality. (CVE-2018-0748, CVE-2018-0751, CVE-2018-0752) - An elevation of privilege vulnerability exists when Microsoft Edge does not properly enforce cross-domain policies, which could allow an attacker to access information from one domain and inject it into another domain. (CVE-2018-0803) - An information disclosure vulnerability exists in Windows Adobe Type Manager Font Driver (ATMFD.dll) when it fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could potentially read data that was not intended to be disclosed. Note that this vulnerability would not allow an attacker to execute code or to elevate their user rights directly, but it could be used to obtain information that could be used to try to further compromise the affected system. (CVE-2018-0754) - A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0762, CVE-2018-0772) - An information disclosure vulnerability exists when Microsoft Edge PDF Reader improperly handles objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0766) - An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory in Microsoft Edge. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0767, CVE-2018-0780) - An elevation of privilege vulnerability exists in the Microsoft Server Message Block (SMB) Server when an attacker with valid credentials attempts to open a specially crafted file over the SMB protocol on the same machine. An attacker who successfully exploited this vulnerability could bypass certain security checks in the operating system. (CVE-2018-0749) - A denial of service vulnerability exists in the way that Windows handles objects in memory. An attacker who successfully exploited the vulnerability could cause a target system to stop responding. Note that the denial of service condition would not allow an attacker to execute code or to elevate user privileges. However, the denial of service condition could prevent authorized users from using system resources. The security update addresses the vulnerability by correcting how Windows handles objects in memory. (CVE-2018-0753) - An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. (CVE-2018-0745, CVE-2018-0746, CVE-2018-0747) - An elevation of privilege vulnerability exists due to an integer overflow in Windows Subsystem for Linux. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. (CVE-2018-0743)
last seen	2020-06-01
modified	2020-06-02
plugin id	105549
published	2018-01-04
reporter	This script is Copyright (C) 2018 Tenable Network Security, Inc.
source	https://www.tenable.com/plugins/nessus/105549
title	KB4056891: Windows 10 Version 1703 January 2018 Security Update (Meltdown)(Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0609-1.NASL
description	This update for xen fixes several issues. These security issues were fixed : - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via side effects of speculative execution, aka
last seen	2020-06-01
modified	2020-06-02
plugin id	107144
published	2018-03-06
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/107144
title	SUSE SLES12 Security Update : xen (SUSE-SU-2018:0609-1) (Meltdown) (Spectre)

NASL family	OracleVM Local Security Checks
NASL id	ORACLEVM_OVMSA-2018-0224.NASL
description	The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0224 for details.
last seen	2020-06-01
modified	2020-06-02
plugin id	110110
published	2018-05-25
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/110110
title	OracleVM 3.3 : xen (OVMSA-2018-0224) (Meltdown) (Spectre)

NASL family	Ubuntu Local Security Checks
NASL id	UBUNTU_USN-3541-1.NASL
description	Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. This update provides mitigations for the i386 (CVE-2017-5753 only), amd64, ppc64el, and s390x architectures. (CVE-2017-5715, CVE-2017-5753) USN-3523-1 mitigated CVE-2017-5754 (Meltdown) for the amd64 architecture in Ubuntu 17.10. This update provides the corresponding mitigations for the ppc64el architecture. Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5754). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	106270
published	2018-01-23
reporter	Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106270
title	Ubuntu 17.10 : linux vulnerabilities (USN-3541-1) (Meltdown) (Spectre)

NASL family	Ubuntu Local Security Checks
NASL id	UBUNTU_USN-3523-2.NASL
description	USN-3523-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5754) Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel did not properly check the relationship between pointer values and the BPF stack. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-17863) Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel improperly performed sign extension in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16995) Alexei Starovoitov discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel contained a branch-pruning logic issue around unreachable code. A local attacker could use this to cause a denial of service. (CVE-2017-17862) Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel mishandled pointer data values in some situations. A local attacker could use this to to expose sensitive information (kernel memory). (CVE-2017-17864). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	105747
published	2018-01-11
reporter	Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105747
title	Ubuntu 16.04 LTS : linux-hwe, linux-azure, linux-gcp, linux-oem vulnerabilities (USN-3523-2) (Meltdown)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0011-1.NASL
description	The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes. This update adds mitigations for various side channel attacks against modern CPUs that could disclose content of otherwise unreadable memory (bnc#1068032). - CVE-2017-5753: Local attackers on systems with modern CPUs featuring deep instruction pipelining could use attacker controllable speculative execution over code patterns in the Linux Kernel to leak content from otherwise not readable memory in the same address space, allowing retrieval of passwords, cryptographic keys and other secrets. This problem is mitigated by adding speculative fencing on affected code paths throughout the Linux kernel. This issue is addressed for the x86_64, the IBM Power and IBM zSeries architecture. - CVE-2017-5715: Local attackers on systems with modern CPUs featuring branch prediction could use mispredicted branches to speculatively execute code patterns that in turn could be made to leak other non-readable content in the same address space, an attack similar to CVE-2017-5753. This problem is mitigated by disabling predictive branches, depending on CPU architecture either by firmware updates and/or fixes in the user-kernel privilege boundaries. This is done with help of Linux Kernel fixes on the Intel/AMD x86_64 and IBM zSeries architectures. On x86_64, this requires also updates of the CPU microcode packages, delivered in separate updates. For IBM Power and zSeries the required firmware updates are supplied over regular channels by IBM. As this feature can have a performance impact, it can be disabled using the
last seen	2020-06-01
modified	2020-06-02
plugin id	105575
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105575
title	SUSE SLES11 Security Update : kernel (SUSE-SU-2018:0011-1) (Meltdown) (Spectre)

NASL family	Oracle Linux Local Security Checks
NASL id	ORACLELINUX_ELSA-2018-4011.NASL
description	Description of changes: [4.1.12-112.14.11.el7uek] - x86/pti/efi: broken conversion from efi to kernel page table (Pavel Tatashin) [Orabug: 27363926] [Orabug: 27352353] {CVE-2017-5754} - x86/spec: Always set IBRS to guest value on VMENTER and host on VMEXIT (redux) (Konrad Rzeszutek Wilk) [Orabug: 27369994] - x86/IBRS: Make sure we restore MSR_IA32_SPEC_CTRL to a valid value (Boris Ostrovsky) [Orabug: 27362581] - x86/IBRS/IBPB: Set sysctl_ibrs/ibpb_enabled properly (Boris Ostrovsky) [Orabug: 27363792] - x86/spec_ctrl: Add missing
last seen	2020-06-01
modified	2020-06-02
plugin id	106040
published	2018-01-15
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106040
title	Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4011) (Meltdown) (Spectre)

NASL family	F5 Networks Local Security Checks
NASL id	F5_BIGIP_SOL91229003.NASL
description	The following three side-channel attacks were publicly disclosed on January 3, 2018 : CVE-2017-5715 Spectre-BTB (previously known as Spectre Variant 2) Branch target injection Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis. CVE-2017-5753 Spectre-PHT (previously known as Spectre Variant 1) Bounds checking bypass Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis. CVE-2017-5754 Meltdown-US (previously known as Meltdown) Rogue data cache load Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache. Impact F5 continues to investigate the impact of the Spectre and Meltdown vulnerabilities on our products. F5 is focused onproviding patched releases as soon as we have fully tested and verified fixes. F5 will update this article with the most current information as soon as it is confirmed. BIG-IP First and foremost, there is no exposure on BIG-IP products by way ofthe data plane. All exposure is limited to the control plane (also known as the management plane). Furthermore, on the control plane, the vulnerabilities are exploitable only by four authorized, authenticated account roles: Administrator, Resource Administrator, Manager, and iRules Manager. You must be authorized to access the system in one of these roles to even attempt to exploit the vulnerabilities. All three vulnerabilities require an attacker who can provideand runbinary code of their choosing on the BIG-IP platform. These conditions severely restrict the exposure risk of BIG-IP products. For single-tenancy products, such as astandalone BIG-IP appliance, the risk is limited to a local, authorized user using one of the vulnerabilities to read information from memory that they would not normally be able to access, exceeding their privileges. Effectively, the risk in a single-tenancy situation is that a user may be able to access kernel-space memory, instead of being limited to their own user-space. For multi-tenancy environments, such as cloud, VE, and Virtual Clustered Multiprocessing (vCMP), the same local risk applies as with single-tenancy environments local kernel memory access. Additionally, the risk of attacks across guests exists, or attacks against the hypervisor/host. In cloud and VE environments, preventing these new attacks falls on the hypervisor/host platform, outside the scope of F5
last seen	2020-06-01
modified	2020-06-02
plugin id	118702
published	2018-11-02
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/118702
title	F5 Networks BIG-IP : Side-channel processor vulnerabilities (K91229003) (Meltdown) (Spectre)

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_NT_MS18_APR_4093112.NASL
description	The remote Windows host is missing security update 4093112. It is, therefore, affected by multiple vulnerabilities : - An vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) - An elevation of privilege vulnerability exists when Windows improperly handles objects in memory and incorrectly maps kernel memory. (CVE-2018-1009) - A security feature bypass exists when Device Guard incorrectly validates an untrusted file. An attacker who successfully exploited this vulnerability could make an unsigned file appear to be signed. Because Device Guard relies on the signature to determine the file is non- malicious, Device Guard could then allow a malicious file to execute. In an attack scenario, an attacker could make an untrusted file appear to be a trusted file. The update addresses the vulnerability by correcting how Device Guard handles untrusted files. (CVE-2018-0966, CVE-2018-1035) - A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0979, CVE-2018-0980, CVE-2018-0990, CVE-2018-0993, CVE-2018-0994, CVE-2018-0995, CVE-2018-1019) - A denial of service vulnerability exists in the way that Windows SNMP Service handles malformed SNMP traps. An attacker who successfully exploited the vulnerability could cause a target system to stop responding. Note that the denial of service condition would not allow an attacker to execute code or to elevate user privileges. However, the denial of service condition could prevent authorized users from using system resources. The security update addresses the vulnerability by correcting how Windows SNMP Service processes SNMP traps. (CVE-2018-0967) - An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2018-0960) - An elevation of privilege vulnerability exists in Windows Adobe Type Manager Font Driver (ATMFD.dll) when it fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code and take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-1008) - An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory in Internet Explorer. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0987) - A buffer overflow vulnerability exists in the Microsoft JET Database Engine that could allow remote code execution on an affected system. An attacker who successfully exploited this vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. (CVE-2018-1003) - An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. (CVE-2018-0963) - A denial of service vulnerability exists in Remote Desktop Protocol (RDP) when an attacker connects to the target system using RDP and sends specially crafted requests. An attacker who successfully exploited this vulnerability could cause the RDP service on the target system to stop responding. (CVE-2018-0976) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0988, CVE-2018-0996, CVE-2018-1001) - A security feature bypass vulnerability exists when Active Directory incorrectly applies Network Isolation settings. (CVE-2018-0890) - A remote code execution vulnerability exists when the Windows font library improperly handles specially crafted embedded fonts. An attacker who successfully exploited the vulnerability could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-1010, CVE-2018-1012, CVE-2018-1013, CVE-2018-1015, CVE-2018-1016) - A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0870, CVE-2018-0991, CVE-2018-0997, CVE-2018-1018, CVE-2018-1020) - An information disclosure vulnerability exists when Microsoft Edge PDF Reader improperly handles objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0998) - An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. (CVE-2018-0968, CVE-2018-0969, CVE-2018-0970, CVE-2018-0971, CVE-2018-0972, CVE-2018-0973, CVE-2018-0974, CVE-2018-0975) - An information disclosure vulnerability exists when Microsoft Edge improperly handles objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0892) - An information disclosure vulnerability exists when Windows Hyper-V on a host operating system fails to properly validate input from an authenticated user on a guest operating system. (CVE-2018-0957, CVE-2018-0964) - A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory. The vulnerability could corrupt memory in a way that could allow an attacker to execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-1023) - A denial of service vulnerability exists in the way that Windows handles objects in memory. An attacker who successfully exploited the vulnerability could cause a target system to stop responding. Note that the denial of service condition would not allow an attacker to execute code or to elevate user privileges. However, the denial of service condition could prevent authorized users from using system resources. The security update addresses the vulnerability by correcting how Windows handles objects in memory. (CVE-2018-8116) - A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-1004) - An information disclosure vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could provide an attacker with information to further compromise the user
last seen	2020-06-01
modified	2020-06-02
plugin id	108964
published	2018-04-10
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108964
title	KB4093112: Windows 10 Version 1709 and Windows Server Version 1709 April 2018 Security Update (Meltdown)(Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0512.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * hw: cpu: speculative execution branch target injection (s390-only) (CVE-2017-5715, Important) * hw: cpu: speculative execution bounds-check bypass (s390 and powerpc) (CVE-2017-5753, Important) * hw: cpu: speculative execution permission faults handling (powerpc-only) (CVE-2017-5754) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fixes : * If a fibre channel (FC) switch was powered down and then powered on again, the SCSI device driver stopped permanently the SCSI device
last seen	2020-05-19
modified	2018-03-14
plugin id	108329
published	2018-03-14
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108329
title	RHEL 6 : kernel (RHSA-2018:0512) (Meltdown) (Spectre)

NASL family	Huawei Local Security Checks
NASL id	EULEROS_SA-2018-1236.NASL
description	According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - The recent speculative execution CVEs address three potential attacks across a wide variety of architectures and hardware platforms. - Note: This issue is present in hardware and cannot be fully fixed via software update. The nature of these vulnerabilities and their fixes introduces the possibility of reduced performance on patched systems. The performance impact depends on the hardware and the applications in place. - The first two variants abuse speculative execution to perform bounds-check bypass (CVE-2017-5753), or by utilizing branch target injection (CVE-2017-5715) to cause kernel code at an address under attacker control to execute speculatively. Collectively these are known as
last seen	2020-03-19
modified	2018-09-18
plugin id	117545
published	2018-09-18
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/117545
title	EulerOS Virtualization 2.5.0 : kernel (EulerOS-SA-2018-1236)

NASL family	Windows
NASL id	NVIDIA_WIN_CVE_2017_5753.NASL
description	The NVIDIA GPU display driver software on the remote host is missing a security update. It is, therefore, affected by multiple vulnerabilities.
last seen	2020-06-01
modified	2020-06-02
plugin id	105777
published	2018-01-12
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105777
title	NVIDIA Windows GPU Display Driver 384.x / 385.x / 386.x < 386.07 / 390.x < 390.65 Multiple Vulnerabilities (Meltdown)(Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0045.NASL
description	An update for rhvm-appliance is now available for RHEV 4.X, RHEV-H, and Agents for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The RHV-M Virtual Appliance automates the process of installing and configuring the Red Hat Virtualization Manager. The appliance is available to download as an OVA file from the Customer Portal. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105676
published	2018-01-09
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105676
title	RHEL 7 : rhvm-appliance (RHSA-2018:0045) (Meltdown) (Spectre)

NASL family	PhotonOS Local Security Checks
NASL id	PHOTONOS_PHSA-2018-1_0-0097_LINUX.NASL
description	An update of the linux package has been released.
last seen	2020-06-01
modified	2020-06-02
plugin id	121797
published	2019-02-07
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/121797
title	Photon OS 1.0: Linux PHSA-2018-1.0-0097

NASL family	Oracle Linux Local Security Checks
NASL id	ORACLELINUX_ELSA-2018-1319.NASL
description	From Red Hat Security Advisory 2018:1319 : An update for kernel is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * hw: cpu: speculative execution permission faults handling (CVE-2017-5754, x86 32-bit) * Kernel: error in exception handling leads to DoS (CVE-2018-8897) * kernel: nfsd: Incorrect handling of long RPC replies (CVE-2017-7645) * kernel: Use-after-free vulnerability in DCCP socket (CVE-2017-8824) * kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166) * kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/ netfilter/xt_TCPMSS.c (CVE-2017-18017) * kernel: Stack information leak in the EFS element (CVE-2017-1000410) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Google Project Zero for reporting CVE-2017-5754; Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting CVE-2018-8897; Mohamed Ghannam for reporting CVE-2017-8824; and Armis Labs for reporting CVE-2017-1000410. Bug Fix(es) : These updated kernel packages include also numerous bug fixes. Space precludes documenting all of these bug fixes in this advisory. See the bug fix descriptions in the related Knowledge Article: https://access.redhat.com/ articles/3431591
last seen	2020-06-01
modified	2020-06-02
plugin id	109629
published	2018-05-09
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109629
title	Oracle Linux 6 : kernel (ELSA-2018-1319) (Meltdown)

NASL family	OracleVM Local Security Checks
NASL id	ORACLEVM_OVMSA-2018-0017.NASL
description	The remote OracleVM system is missing necessary patches to address critical security updates : - drivers/char/mem.c: deny access in open operation when securelevel is set (Ethan Zhao) [Orabug: 27234850] [Orabug: 27234850] - hugetlb: fix nr_pmds accounting with shared page tables (Kirill A. Shutemov) [Orabug: 26988581] - x86/IBRS: Drop unnecessary WRITE_ONCE (Boris Ostrovsky) [Orabug: 27416198] - x86/IBRS: Don
last seen	2020-06-01
modified	2020-06-02
plugin id	106706
published	2018-02-09
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106706
title	OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0017) (Meltdown)

NASL family	MacOS X Local Security Checks
NASL id	MACOS_10_13_2.NASL
description	The remote host is running a version of Mac OS X that is 10.13.x prior to 10.13.2. It is, therefore, affected by multiple vulnerabilities in the following components : - apache - curl - Directory Utility - IOAcceleratorFamily - IOKit - Intel Graphics Driver - Kernel - Mail - Mail Drafts - OpenSSL - Screen Sharing Server Note that successful exploitation of the most serious issues can result in arbitrary code execution.
last seen	2020-06-01
modified	2020-06-02
plugin id	105080
published	2017-12-07
reporter	This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105080
title	macOS 10.13.x < 10.13.2 Multiple Vulnerabilities (Meltdown)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0040-1.NASL
description	The SUSE Linux Enterprise 11 SP3 LTSS kernel was updated to receive various security and bugfixes. This update adds mitigations for various side channel attacks against modern CPUs that could disclose content of otherwise unreadable memory (bnc#1068032). - CVE-2017-5753: Local attackers on systems with modern CPUs featuring deep instruction pipelining could use attacker controllable speculative execution over code patterns in the Linux Kernel to leak content from otherwise not readable memory in the same address space, allowing retrieval of passwords, cryptographic keys and other secrets. This problem is mitigated by adding speculative fencing on affected code paths throughout the Linux kernel. - CVE-2017-5715: Local attackers on systems with modern CPUs featuring branch prediction could use mispredicted branches to speculatively execute code patterns that in turn could be made to leak other non-readable content in the same address space, an attack similar to CVE-2017-5753. This problem is mitigated by disabling predictive branches, depending on CPU architecture either by firmware updates and/or fixes in the user-kernel privilege boundaries. Please contact your CPU / hardware vendor for potential microcode or BIOS updates needed for this fix. As this feature can have a performance impact, it can be disabled using the
last seen	2020-06-05
modified	2018-01-09
plugin id	105685
published	2018-01-09
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105685
title	SUSE SLES11 Security Update : kernel (SUSE-SU-2018:0040-1) (BlueBorne) (KRACK) (Meltdown) (Spectre)

NASL family	NewStart CGSL Local Security Checks
NASL id	NEWSTART_CGSL_NS-SA-2019-0143_KERNEL.NASL
description	The remote NewStart CGSL host, running version MAIN 4.05, has kernel packages installed that are affected by multiple vulnerabilities: - A flaw was found in the Linux kernel
last seen	2020-03-18
modified	2019-08-12
plugin id	127408
published	2019-08-12
reporter	This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/127408
title	NewStart CGSL MAIN 4.05 : kernel Multiple Vulnerabilities (NS-SA-2019-0143)

NASL family	Huawei Local Security Checks
NASL id	EULEROS_SA-2018-1002.NASL
description	According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - The recent speculative execution CVEs address three potential attacks across a wide variety of architectures and hardware platforms. - Note: This issue is present in hardware and cannot be fully fixed via software update. The nature of these vulnerabilities and their fixes introduces the possibility of reduced performance on patched systems. The performance impact depends on the hardware and the applications in place. - The first two variants abuse speculative execution to perform bounds-check bypass (CVE-2017-5753), or by utilizing branch target injection (CVE-2017-5715) to cause kernel code at an address under attacker control to execute speculatively. Collectively these are known as
last seen	2020-05-06
modified	2018-01-09
plugin id	105655
published	2018-01-09
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105655
title	EulerOS 2.0 SP1 : kernel (EulerOS-SA-2018-1002)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-3230-1.NASL
description	This update for xen fixes several issues. These security issues were fixed : CVE-2018-8897: Prevent mishandling of debug exceptions on x86 (XSA-260, bsc#1090820) Handle HPET timers in IO-APIC mode correctly to prevent malicious or buggy HVM guests from causing a hypervisor crash or potentially privilege escalation/information leaks (XSA-261, bsc#1090822) Prevent unbounded loop, induced by qemu allowing an attacker to permanently keep a physical CPU core busy (XSA-262, bsc#1090823) CVE-2018-10472: x86 HVM guest OS users (in certain configurations) were able to read arbitrary dom0 files via QMP live insertion of a CDROM, in conjunction with specifying the target file as the backing file of a snapshot (bsc#1089152). CVE-2018-10471: x86 PV guest OS users were able to cause a denial of service (out-of-bounds zero write and hypervisor crash) via unexpected INT 80 processing, because of an incorrect fix for CVE-2017-5754 (bsc#1089635). The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	118304
published	2018-10-22
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/118304
title	SUSE SLES12 Security Update : xen (SUSE-SU-2018:3230-1) (Meltdown)

NASL family	Scientific Linux Local Security Checks
NASL id	SL_20180313_KERNEL_ON_SL6_X.NASL
description	Security Fix(es) : - hw: cpu: speculative execution branch target injection (s390-only) (CVE-2017-5715, Important) - hw: cpu: speculative execution bounds-check bypass (s390 and powerpc) (CVE-2017-5753, Important) - hw: cpu: speculative execution permission faults handling (powerpc-only) (CVE-2017-5754) Bug Fixes : - If a fibre channel (FC) switch was powered down and then powered on again, the SCSI device driver stopped permanently the SCSI device
last seen	2020-03-18
modified	2018-03-15
plugin id	108364
published	2018-03-15
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108364
title	Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20180313) (Meltdown) (Spectre)

NASL family	Ubuntu Local Security Checks
NASL id	UBUNTU_USN-3516-1.NASL
description	It was discovered that speculative execution performed by modern CPUs could leak information through a timing side-channel attack, and that this could be exploited in web browser JavaScript engines. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to obtain sensitive information from other domains, bypassing same-origin restrictions. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	105649
published	2018-01-08
reporter	Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105649
title	Ubuntu 14.04 LTS / 16.04 LTS / 17.04 / 17.10 : firefox vulnerabilities (USN-3516-1) (Meltdown) (Spectre)

NASL family	Ubuntu Local Security Checks
NASL id	UBUNTU_USN-3522-1.NASL
description	Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	105724
published	2018-01-10
reporter	Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105724
title	Ubuntu 16.04 LTS : linux, linux-aws, linux-euclid, linux-kvm vulnerability (USN-3522-1) (Meltdown)

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_NT_MS18_JAN_4056890.NASL
description	The remote Windows host is missing security update 4056890 or 4057142. It is, therefore, affected by multiple vulnerabilities : - An vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) - An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0744) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0758, CVE-2018-0769, CVE-2018-0770, CVE-2018-0776, CVE-2018-0777, CVE-2018-0781) - An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. (CVE-2018-0746, CVE-2018-0747) - An elevation of privilege vulnerability exists when Microsoft Edge does not properly enforce cross-domain policies, which could allow an attacker to access information from one domain and inject it into another domain. (CVE-2018-0803) - An information disclosure vulnerability exists in Windows Adobe Type Manager Font Driver (ATMFD.dll) when it fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could potentially read data that was not intended to be disclosed. Note that this vulnerability would not allow an attacker to execute code or to elevate their user rights directly, but it could be used to obtain information that could be used to try to further compromise the affected system. (CVE-2018-0754) - A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0762, CVE-2018-0772) - An information disclosure vulnerability exists when Microsoft Edge PDF Reader improperly handles objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0766) - An elevation of privilege vulnerability exists in the way that the Windows Kernel API enforces permissions. An attacker who successfully exploited the vulnerability could impersonate processes, interject cross-process communication, or interrupt system functionality. (CVE-2018-0748, CVE-2018-0751, CVE-2018-0752) - An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory in Microsoft Edge. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0767, CVE-2018-0780) - An elevation of privilege vulnerability exists in the Microsoft Server Message Block (SMB) Server when an attacker with valid credentials attempts to open a specially crafted file over the SMB protocol on the same machine. An attacker who successfully exploited this vulnerability could bypass certain security checks in the operating system. (CVE-2018-0749) - A denial of service vulnerability exists in the way that Windows handles objects in memory. An attacker who successfully exploited the vulnerability could cause a target system to stop responding. Note that the denial of service condition would not allow an attacker to execute code or to elevate user privileges. However, the denial of service condition could prevent authorized users from using system resources. The security update addresses the vulnerability by correcting how Windows handles objects in memory. (CVE-2018-0753)
last seen	2020-06-01
modified	2020-06-02
plugin id	105548
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105548
title	KB4056890: Windows 10 Version 1607 and Windows Server 2016 January 2018 Security Update (Meltdown)(Spectre)

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_NT_MS18_MAR_4088877.NASL
description	The remote Windows host is missing security update 4088880 or cumulative update 4088877. It is, therefore, affected by multiple vulnerabilities : - An vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) - An information disclosure vulnerability exists when Windows Remote Assistance incorrectly processes XML External Entities (XXE). An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0878) - An information disclosure vulnerability exists when Internet Explorer improperly handles objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0929) - A remote code execution vulnerability exists when Windows Shell does not properly validate file copy destinations. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. (CVE-2018-0883) - An elevation of privilege vulnerability exists in Windows when the Microsoft Video Control mishandles objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in system mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0881) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0889, CVE-2018-0935) - An information disclosure vulnerability exists when the Windows kernel improperly initializes objects in memory. (CVE-2018-0811, CVE-2018-0813, CVE-2018-0814) - A denial of service vulnerability exists when Microsoft Hyper-V Network Switch on a host server fails to properly validate input from a privileged user on a guest operating system. An attacker who successfully exploited the vulnerability could cause the host server to crash. (CVE-2018-0885) - A remote code execution vulnerability exists in the Credential Security Support Provider protocol (CredSSP). An attacker who successfully exploited this vulnerability could relay user credentials and use them to execute code on the target system. CredSSP is an authentication provider which processes authentication requests for other applications; any application which depends on CredSSP for authentication may be vulnerable to this type of attack. As an example of how an attacker would exploit this vulnerability against Remote Desktop Protocol, the attacker would need to run a specially crafted application and perform a man-in-the-middle attack against a Remote Desktop Protocol session. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. The security update addresses the vulnerability by correcting how Credential Security Support Provider protocol (CredSSP) validates requests during the authentication process. To be fully protected against this vulnerability users must enable Group Policy settings on their systems and update their Remote Desktop clients. The Group Policy settings are disabled by default to prevent connectivity problems and users must follow the instructions documented HERE to be fully protected. (CVE-2018-0886) - An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. (CVE-2018-0894, CVE-2018-0895, CVE-2018-0896, CVE-2018-0897, CVE-2018-0898, CVE-2018-0899, CVE-2018-0900, CVE-2018-0901, CVE-2018-0904) - An elevation of privilege vulnerability exists in the Windows Installer when the Windows Installer fails to properly sanitize input leading to an insecure library loading behavior. A locally authenticated attacker could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. The security update addresses the vulnerability by correcting the input sanitization error to preclude unintended elevation. (CVE-2018-0868) - An elevation of privilege vulnerability exists in the way that the Windows Graphics Device Interface (GDI) handles objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0816, CVE-2018-0817) - An information disclosure vulnerability exists when affected Microsoft browsers improperly handle objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2018-0927) - An information disclosure vulnerability exists when Windows Hyper-V on a host operating system fails to properly validate input from an authenticated user on a guest operating system. (CVE-2018-0888) - An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory in Microsoft browsers. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0891)
last seen	2020-06-01
modified	2020-06-02
plugin id	108292
published	2018-03-13
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108292
title	KB4088880: Windows Server 2012 March 2018 Security Update (Meltdown)(Spectre)

NASL family	SuSE Local Security Checks
NASL id	OPENSUSE-2018-599.NASL
description	This update for xen to version 4.10.1 fixes several issues (bsc#1027519). These security issues were fixed : - CVE-2018-3639: Prevent attackers with local user access from extracting information via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4 (bsc#1092631). - CVE-2017-5753,CVE-2017-5715,CVE-2017-5754: Improved Spectre v2 mitigations (bsc#1074562). This non-security issue was fixed : - Always call qemus xen-save-devices-state in suspend/resume to fix migration with qcow2 images (bsc#1079730)
last seen	2020-06-05
modified	2018-06-11
plugin id	110438
published	2018-06-11
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/110438
title	openSUSE Security Update : xen (openSUSE-2018-599) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-1349.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6.4 Advanced Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. [Updated 10 May 2018] The references to CVE-2017-5754 x86 (32-bit) mitigation were removed because Red Hat Enterprise Linux 6.4 Advanced Update Support does not include support for x86 32-bit architecture. Consequently, impact rating of this erratum was changed from Important to Moderate. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * Kernel: error in exception handling leads to DoS (CVE-2018-8897) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting this issue. Bug Fix(es) : * The kernel build requirements have been updated to the GNU Compiler Collection (GCC) compiler version that has the support for Retpolines. The Retpolines mechanism is a software construct that leverages specific knowledge of the underlying hardware to mitigate the branch target injection, also known as Spectre variant 2 vulnerability described in CVE-2017-5715. (BZ#1554251)
last seen	2020-06-01
modified	2020-06-02
plugin id	109639
published	2018-05-09
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109639
title	RHEL 6 : kernel (RHSA-2018:1349)

NASL family	Huawei Local Security Checks
NASL id	EULEROS_SA-2019-1638.NASL
description	According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - The recent speculative execution CVEs address three potential attacks across a wide variety of architectures and hardware platforms. - Note: This issue is present in hardware and cannot be fully fixed via software update. The nature of these vulnerabilities and their fixes introduces the possibility of reduced performance on patched systems. The performance impact depends on the hardware and the applications in place. - The first two variants abuse speculative execution to perform bounds-check bypass (CVE-2017-5753), or by utilizing branch target injection (CVE-2017-5715) to cause kernel code at an address under attacker control to execute speculatively. Collectively these are known as
last seen	2020-03-19
modified	2019-06-07
plugin id	125753
published	2019-06-07
reporter	This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/125753
title	EulerOS Virtualization 2.5.1 : kernel (EulerOS-SA-2019-1638)

NASL family	Huawei Local Security Checks
NASL id	EULEROS_SA-2019-1637.NASL
description	According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - The recent speculative execution CVEs address three potential attacks across a wide variety of architectures and hardware platforms. - Note: This issue is present in hardware and cannot be fully fixed via software update. The nature of these vulnerabilities and their fixes introduces the possibility of reduced performance on patched systems. The performance impact depends on the hardware and the applications in place. - The first two variants abuse speculative execution to perform bounds-check bypass (CVE-2017-5753), or by utilizing branch target injection (CVE-2017-5715) to cause kernel code at an address under attacker control to execute speculatively. Collectively these are known as
last seen	2020-03-19
modified	2019-06-07
plugin id	125752
published	2019-06-07
reporter	This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/125752
title	EulerOS Virtualization 2.5.2 : kernel (EulerOS-SA-2019-1637)

NASL family	AIX Local Security Checks
NASL id	AIX_IJ03030.NASL
description	Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis.
last seen	2020-06-01
modified	2020-06-02
plugin id	106311
published	2018-01-25
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106311
title	AIX 6.1 TL 9 : spectre_meltdown (IJ03030) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-1319.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * hw: cpu: speculative execution permission faults handling (CVE-2017-5754, x86 32-bit) * Kernel: error in exception handling leads to DoS (CVE-2018-8897) * kernel: nfsd: Incorrect handling of long RPC replies (CVE-2017-7645) * kernel: Use-after-free vulnerability in DCCP socket (CVE-2017-8824) * kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166) * kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/ netfilter/xt_TCPMSS.c (CVE-2017-18017) * kernel: Stack information leak in the EFS element (CVE-2017-1000410) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Google Project Zero for reporting CVE-2017-5754; Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting CVE-2018-8897; Mohamed Ghannam for reporting CVE-2017-8824; and Armis Labs for reporting CVE-2017-1000410. Bug Fix(es) : These updated kernel packages include also numerous bug fixes. Space precludes documenting all of these bug fixes in this advisory. See the bug fix descriptions in the related Knowledge Article: https://access.redhat.com/ articles/3431591
last seen	2020-06-01
modified	2020-06-02
plugin id	109634
published	2018-05-09
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109634
title	RHEL 6 : kernel (RHSA-2018:1319) (Meltdown)

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_NT_MS18_FEB_4074592.NASL
description	The remote Windows host is missing security update 4074592. It is, therefore, affected by multiple vulnerabilities : - An vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0866) - A security feature bypass vulnerability exists in Windows Scripting Host which could allow an attacker to bypass Device Guard. An attacker who successfully exploited this vulnerability could circumvent a User Mode Code Integrity (UMCI) policy on the machine. (CVE-2018-0827) - An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2018-0757, CVE-2018-0829, CVE-2018-0830) - An information disclosure vulnerability exists when Microsoft Edge improperly handles objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0763, CVE-2018-0839) - An information disclosure vulnerability exists when VBScript improperly discloses the contents of its memory, which could provide an attacker with information to further compromise the users computer or data. (CVE-2018-0847) - A remote code execution vulnerability exists in StructuredQuery when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0825) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0834, CVE-2018-0835, CVE-2018-0836, CVE-2018-0837, CVE-2018-0838, CVE-2018-0856, CVE-2018-0857, CVE-2018-0859, CVE-2018-0860, CVE-2018-0861) - An elevation of privilege vulnerability exists when NTFS improperly handles objects. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2018-0822) - An elevation of privilege vulnerability exists when AppContainer improperly implements constrained impersonation. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2018-0821) - A remote code execution vulnerability exists when Windows improperly handles objects in memory. An attacker who successfully exploited these vulnerabilities could take control of an affected system. (CVE-2018-0842) - An elevation of privilege vulnerability exists when the Windows Common Log File System (CLFS) driver improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2018-0844, CVE-2018-0846) - An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. (CVE-2018-0832) - An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0809) - An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. (CVE-2018-0742, CVE-2018-0756, CVE-2018-0820, CVE-2018-0831) - A security feature bypass vulnerability exists when Microsoft Edge improperly handles requests of different origins. The vulnerability allows Microsoft Edge to bypass Same-Origin Policy (SOP) restrictions, and to allow requests that should otherwise be ignored. An attacker who successfully exploited the vulnerability could force the browser to send data that would otherwise be restricted. (CVE-2018-0771) - A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0840) - An elevation of privilege vulnerability exists when Storage Services improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2018-0826)
last seen	2020-06-01
modified	2020-06-02
plugin id	106798
published	2018-02-13
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106798
title	KB4074592: Windows 10 Version 1703 February 2018 Security Update (Meltdown)(Spectre)

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_NT_MS18_FEB_4074591.NASL
description	The remote Windows host is missing security update 4074591. It is, therefore, affected by multiple vulnerabilities : - An vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0866) - An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2018-0757, CVE-2018-0829, CVE-2018-0830) - An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. (CVE-2018-0742, CVE-2018-0756, CVE-2018-0820) - An information disclosure vulnerability exists when VBScript improperly discloses the contents of its memory, which could provide an attacker with information to further compromise the users computer or data. (CVE-2018-0847) - A remote code execution vulnerability exists in StructuredQuery when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0825) - An elevation of privilege vulnerability exists when Storage Services improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2018-0826) - An elevation of privilege vulnerability exists when NTFS improperly handles objects. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2018-0822) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0834, CVE-2018-0835, CVE-2018-0837, CVE-2018-0838, CVE-2018-0857, CVE-2018-0859, CVE-2018-0860) - An elevation of privilege vulnerability exists when AppContainer improperly implements constrained impersonation. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2018-0821) - A remote code execution vulnerability exists when Windows improperly handles objects in memory. An attacker who successfully exploited these vulnerabilities could take control of an affected system. (CVE-2018-0842) - A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0840) - An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. (CVE-2018-0832) - An elevation of privilege vulnerability exists when the Windows Common Log File System (CLFS) driver improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2018-0844, CVE-2018-0846)
last seen	2020-06-01
modified	2020-06-02
plugin id	106797
published	2018-02-13
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106797
title	KB4074591: Windows 10 Version 1511 February 2018 Security Update (Meltdown)(Spectre)

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_NT_MS18_JAN_4056888.NASL
description	The remote Windows host is missing security update 4056888 or 4075200. It is, therefore, affected by multiple vulnerabilities : - An vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) - An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0744) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0758, CVE-2018-0769, CVE-2018-0770, CVE-2018-0776, CVE-2018-0777, CVE-2018-0781) - An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. (CVE-2018-0746, CVE-2018-0747) - An elevation of privilege vulnerability exists when Microsoft Edge does not properly enforce cross-domain policies, which could allow an attacker to access information from one domain and inject it into another domain. (CVE-2018-0803) - An information disclosure vulnerability exists in Windows Adobe Type Manager Font Driver (ATMFD.dll) when it fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could potentially read data that was not intended to be disclosed. Note that this vulnerability would not allow an attacker to execute code or to elevate their user rights directly, but it could be used to obtain information that could be used to try to further compromise the affected system. (CVE-2018-0754) - A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0762, CVE-2018-0772) - An information disclosure vulnerability exists when Microsoft Edge PDF Reader improperly handles objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0766) - An elevation of privilege vulnerability exists in the way that the Windows Kernel API enforces permissions. An attacker who successfully exploited the vulnerability could impersonate processes, interject cross-process communication, or interrupt system functionality. (CVE-2018-0748, CVE-2018-0751, CVE-2018-0752) - An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory in Microsoft Edge. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0767, CVE-2018-0780) - An elevation of privilege vulnerability exists in the Microsoft Server Message Block (SMB) Server when an attacker with valid credentials attempts to open a specially crafted file over the SMB protocol on the same machine. An attacker who successfully exploited this vulnerability could bypass certain security checks in the operating system. (CVE-2018-0749) - A denial of service vulnerability exists in the way that Windows handles objects in memory. An attacker who successfully exploited the vulnerability could cause a target system to stop responding. Note that the denial of service condition would not allow an attacker to execute code or to elevate user privileges. However, the denial of service condition could prevent authorized users from using system resources. The security update addresses the vulnerability by correcting how Windows handles objects in memory. (CVE-2018-0753)
last seen	2020-06-01
modified	2020-06-02
plugin id	105547
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105547
title	KB4056888: Windows 10 Version 1511 January 2018 Security Update (Meltdown)(Spectre)

NASL family	Misc.
NASL id	CITRIX_XENSERVER_CTX231390.NASL
description	The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities.
last seen	2020-06-01
modified	2020-06-02
plugin id	105617
published	2018-01-05
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105617
title	Citrix XenServer Multiple Vulnerabilities (CTX231390) (Meltdown)(Spectre)

NASL family	PhotonOS Local Security Checks
NASL id	PHOTONOS_PHSA-2018-1_0-0097.NASL
description	An update of [linux] packages for PhotonOS has been released. This kernel update fixes vulnerability [CVE-2017-5754](https://web.nvd.nist .gov/view/vuln/detail?vulnId=CVE-2017-5754) which is commonly known as Meltdown vulnerability.
last seen	2019-02-21
modified	2019-02-07
plugin id	111909
published	2018-08-17
reporter	Tenable
source	https://www.tenable.com/plugins/index.php?view=single&id=111909
title	Photon OS 1.0: Linux PHSA-2018-1.0-0097 (deprecated)

NASL family	Ubuntu Local Security Checks
NASL id	UBUNTU_USN-3524-1.NASL
description	Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	105727
published	2018-01-10
reporter	Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105727
title	Ubuntu 14.04 LTS : linux vulnerability (USN-3524-1) (Meltdown)

NASL family	Ubuntu Local Security Checks
NASL id	UBUNTU_USN-3597-1.NASL
description	USNS 3541-1 and 3523-1 provided mitigations for Spectre and Meltdown (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) for the i386, amd64, and ppc64el architectures in Ubuntu 17.10. This update provides the corresponding mitigations for the arm64 architecture. Original advisory details : Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5754) Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5715, CVE-2017-5753). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	108371
published	2018-03-15
reporter	Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108371
title	Ubuntu 17.10 : linux, linux-raspi2 vulnerabilities (USN-3597-1) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0017.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6.6 Advanced Update Support and Red Hat Enterprise Linux 6.6 Telco Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update mitigations for x86-64 architecture are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105533
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105533
title	RHEL 6 : kernel (RHSA-2018:0017) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0016.NASL
description	An update for kernel-rt is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update mitigations for x86-64 architecture are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105532
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105532
title	RHEL 7 : kernel-rt (RHSA-2018:0016) (Meltdown) (Spectre)

NASL family	NewStart CGSL Local Security Checks
NASL id	NEWSTART_CGSL_NS-SA-2019-0007_KERNEL.NASL
description	The remote NewStart CGSL host, running version MAIN 5.04, has kernel packages installed that are affected by multiple vulnerabilities: - It was found that the timer functionality in the Linux kernel ALSA subsystem is prone to a race condition between read and ioctl system call handlers, resulting in an uninitialized memory disclosure to user space. A local user could use this flaw to read information belonging to other users. (CVE-2017-1000380) - An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely- defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	127152
published	2019-08-12
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/127152
title	NewStart CGSL MAIN 5.04 : kernel Multiple Vulnerabilities (NS-SA-2019-0007)

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_NT_MS18_FEB_4074590.NASL
description	The remote Windows host is missing security update 4074590. It is, therefore, affected by multiple vulnerabilities : - An vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0866) - An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2018-0757, CVE-2018-0829, CVE-2018-0830) - A remote code execution vulnerability exists when Windows improperly handles objects in memory. An attacker who successfully exploited these vulnerabilities could take control of an affected system. (CVE-2018-0842) - A remote code execution vulnerability exists in StructuredQuery when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0825) - An elevation of privilege vulnerability exists when Storage Services improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2018-0826) - An elevation of privilege vulnerability exists when NTFS improperly handles objects. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2018-0822) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0834, CVE-2018-0835, CVE-2018-0837, CVE-2018-0838, CVE-2018-0857, CVE-2018-0859, CVE-2018-0860, CVE-2018-0861) - An elevation of privilege vulnerability exists when AppContainer improperly implements constrained impersonation. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2018-0821) - An elevation of privilege vulnerability exists in Microsoft Windows when the MultiPoint management account password is improperly secured. An attacker who successfully exploited this vulnerability could run arbitrary code with elevated privileges. (CVE-2018-0828) - A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0840) - An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. (CVE-2018-0832) - An information disclosure vulnerability exists when VBScript improperly discloses the contents of its memory, which could provide an attacker with information to further compromise the users computer or data. (CVE-2018-0847) - An elevation of privilege vulnerability exists when the Windows Common Log File System (CLFS) driver improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2018-0844, CVE-2018-0846) - A security feature bypass vulnerability exists when Microsoft Edge improperly handles requests of different origins. The vulnerability allows Microsoft Edge to bypass Same-Origin Policy (SOP) restrictions, and to allow requests that should otherwise be ignored. An attacker who successfully exploited the vulnerability could force the browser to send data that would otherwise be restricted. (CVE-2018-0771) - An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. (CVE-2018-0742, CVE-2018-0756, CVE-2018-0820, CVE-2018-0831)
last seen	2020-06-01
modified	2020-06-02
plugin id	106796
published	2018-02-13
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106796
title	KB4074590: Windows 10 Version 1607 and Windows Server 2016 February 2018 Security Update (Meltdown)(Spectre)

NASL family	OracleVM Local Security Checks
NASL id	ORACLEVM_OVMSA-2018-0029.NASL
description	The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0029 for details.
last seen	2020-06-01
modified	2020-06-02
plugin id	108864
published	2018-04-06
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108864
title	OracleVM 3.2 : xen (OVMSA-2018-0029) (Meltdown) (Spectre)

NASL family	Oracle Linux Local Security Checks
NASL id	ORACLELINUX_ELSA-2018-4025.NASL
description	Description of changes: [4.1.12-112.14.14.el7uek] - drivers/char/mem.c: deny access in open operation when securelevel is set (Ethan Zhao) [Orabug: 27234850] [Orabug: 27234850] - hugetlb: fix nr_pmds accounting with shared page tables (Kirill A. Shutemov) [Orabug: 26988581] - x86/IBRS: Drop unnecessary WRITE_ONCE (Boris Ostrovsky) [Orabug: 27416198] - x86/IBRS: Don
last seen	2020-06-01
modified	2020-06-02
plugin id	106670
published	2018-02-08
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106670
title	Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4025) (Meltdown)

NASL family	Debian Local Security Checks
NASL id	DEBIAN_DSA-4120.NASL
description	Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. - CVE-2017-5715 Multiple researchers have discovered a vulnerability in various processors supporting speculative execution, enabling an attacker controlling an unprivileged process to read memory from arbitrary addresses, including from the kernel and all other processes running on the system. This specific attack has been named Spectre variant 2 (branch target injection) and is mitigated in the Linux kernel for the Intel x86-64 architecture by using the
last seen	2020-06-01
modified	2020-06-02
plugin id	106955
published	2018-02-23
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106955
title	Debian DSA-4120-1 : linux - security update (Meltdown) (Spectre)

NASL family	Amazon Linux Local Security Checks
NASL id	AL2_ALAS-2018-939.NASL
description	An updated kernel release for Amazon Linux has been made available which prevents speculative execution of indirect branches within the kernel. This release incorporates latest stable open source Linux security improvements to address CVE-2017-5715 within the kernel and builds upon previously incorporated Kernel Page Table Isolation (KPTI) that addressed CVE-2017-5754 . Customers must upgrade to the latest Amazon Linux kernel or AMI to effectively mitigate the impact of both CVE-2017-5754 and CVE-2017-5715 on MMU privilege separation (kernel mode vs. user mode) within their instance. Customers with existing Amazon Linux AMI instances should run the following command to ensure they receive the updated package :
last seen	2020-06-01
modified	2020-06-02
plugin id	109119
published	2018-04-18
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109119
title	Amazon Linux 2 : kernel (ALAS-2018-939) (Meltdown) (Spectre)

NASL family	CentOS Local Security Checks
NASL id	CENTOS_RHSA-2018-1319.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * hw: cpu: speculative execution permission faults handling (CVE-2017-5754, x86 32-bit) * Kernel: error in exception handling leads to DoS (CVE-2018-8897) * kernel: nfsd: Incorrect handling of long RPC replies (CVE-2017-7645) * kernel: Use-after-free vulnerability in DCCP socket (CVE-2017-8824) * kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166) * kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/ netfilter/xt_TCPMSS.c (CVE-2017-18017) * kernel: Stack information leak in the EFS element (CVE-2017-1000410) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Google Project Zero for reporting CVE-2017-5754; Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting CVE-2018-8897; Mohamed Ghannam for reporting CVE-2017-8824; and Armis Labs for reporting CVE-2017-1000410. Bug Fix(es) : These updated kernel packages include also numerous bug fixes. Space precludes documenting all of these bug fixes in this advisory. See the bug fix descriptions in the related Knowledge Article: https://access.redhat.com/ articles/3431591
last seen	2020-06-01
modified	2020-06-02
plugin id	109655
published	2018-05-10
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109655
title	CentOS 6 : kernel (CESA-2018:1319) (Meltdown)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2019-1046.NASL
description	An update for rhvm-setup-plugins is now available for Red Hat Virtualization Engine 4.3. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The rhvm-setup-plugins package adds functionality exclusive only to Red Hat Virtualization Manager, and is not available for the upstream ovirt-engine. It includes the configuration of the Red Hat Support plugin, copying downstream-only artifacts to the ISO domain, and links to the knowledgebase and other support material. Security Fix(es) : * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5754 relies on the fact that, on impacted microprocessors, during speculative execution of instruction permission faults, exception generation triggered by a faulting access is suppressed until the retirement of the whole instruction block. In a combination with the fact that memory accesses may populate the cache even when the block is being dropped and never committed (executed), an unprivileged local attacker could use this flaw to read privileged (kernel space) memory by conducting targeted cache side-channel attacks. Note: CVE-2017-5754 affects Intel x86-64 microprocessors. AMD x86-64 microprocessors are not affected by this issue. (CVE-2017-5754) Bug Fix(es) : * [CVE-2017-5754] Variant3: POWER {qemu-kvm-rhev} Add machine type variants (BZ#1559948) * add POWER 9 to the 4.2 cluster level (BZ#1574494)
last seen	2020-06-01
modified	2020-06-02
plugin id	124839
published	2019-05-13
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/124839
title	RHEL 7 : Virtualization Manager (RHSA-2019:1046) (Spectre)

NASL family	CentOS Local Security Checks
NASL id	CENTOS_RHSA-2018-0512.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * hw: cpu: speculative execution branch target injection (s390-only) (CVE-2017-5715, Important) * hw: cpu: speculative execution bounds-check bypass (s390 and powerpc) (CVE-2017-5753, Important) * hw: cpu: speculative execution permission faults handling (powerpc-only) (CVE-2017-5754) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fixes : * If a fibre channel (FC) switch was powered down and then powered on again, the SCSI device driver stopped permanently the SCSI device
last seen	2020-06-01
modified	2020-06-02
plugin id	108341
published	2018-03-15
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108341
title	CentOS 6 : kernel (CESA-2018:0512) (Meltdown) (Spectre)

NASL family	Huawei Local Security Checks
NASL id	EULEROS_SA-2019-1514.NASL
description	According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - The function hso_get_config_data in drivers/net/usb/hso.c in the Linux kernel through 4.19.8 reads if_num from the USB device (as a u8) and uses it to index a small array, resulting in an object out-of-bounds (OOB) read that potentially allows arbitrary read in the kernel address space.(CVE-2018-19985) - An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5754 relies on the fact that, on impacted microprocessors, during speculative execution of instruction permission faults, exception generation triggered by a faulting access is suppressed until the retirement of the whole instruction block. In a combination with the fact that memory accesses may populate the cache even when the block is being dropped and never committed (executed), an unprivileged local attacker could use this flaw to read privileged (kernel space) memory by conducting targeted cache side-channel attacks. Note: CVE-2017-5754 affects Intel x86-64 microprocessors. AMD x86-64 microprocessors are not affected by this issue.(CVE-2017-5754) - A non-privileged user is able to mount a fuse filesystem on RHEL 6 or 7 and crash a system if an application punches a hole in a file that does not end aligned to a page boundary.(CVE-2017-15121) - A flaw was found in the Linux kernel when attempting to
last seen	2020-06-01
modified	2020-06-02
plugin id	124835
published	2019-05-13
reporter	This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/124835
title	EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1514)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-1603-1.NASL
description	This update for xen fixes several issues. These security issues were fixed : - CVE-2018-3639: Prevent attackers with local user access from extracting information via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4 (bsc#1092631). - CVE-2017-5753,CVE-2017-5715,CVE-2017-5754: Improved Spectre v2 mitigations (bsc#1074562). bsc#1027519 Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	110444
published	2018-06-11
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/110444
title	SUSE SLES11 Security Update : xen (SUSE-SU-2018:1603-1) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-1699-2.NASL
description	This update for xen fixes several issues. This feature was added : Added support for qemu monitor command These security issues were fixed: CVE-2018-3639: Prevent attackers with local user access from extracting information via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4 (bsc#1092631). CVE-2017-5753,CVE-2017-5715,CVE-2017-5754: Improved Spectre v2 mitigations (bsc#1074562). The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	118266
published	2018-10-22
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/118266
title	SUSE SLES12 Security Update : xen (SUSE-SU-2018:1699-2) (Meltdown) (Spectre)

NASL family	Oracle Linux Local Security Checks
NASL id	ORACLELINUX_ELSA-2018-0008.NASL
description	From Red Hat Security Advisory 2018:0008 : An update for kernel is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. [Updated 23rd January 2019] The text has been updated to correct the list of architectures addressed by the CVE-2017-5753 mitigation. No changes have been made to the packages. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update, mitigations for x86 (CVE-2017-5753) and x86-64 (CVE-2017-5753, CVE-2017-5715, and CVE-2017-5754) architectures are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105599
published	2018-01-05
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105599
title	Oracle Linux 6 : kernel (ELSA-2018-0008) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0069-1.NASL
description	The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes. This update is only provided as a fix update for IBM Z platform. - CVE-2017-5753 /
last seen	2020-06-01
modified	2020-06-02
plugin id	105765
published	2018-01-12
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105765
title	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:0069-1) (Meltdown) (Spectre)

NASL family	Misc.
NASL id	RANCHEROS_1_1_3.NASL
description	The remote host is running a version of RancherOS that is prior to v1.1.3, hence is vulnerable to local privilege-escalation vulnerability. An attacker can exploit this issue to cause a denial-of-service condition. Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache.
last seen	2020-06-01
modified	2020-06-02
plugin id	132250
published	2019-12-19
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/132250
title	Security Updates for RancherOS Information Disclosure Vulnerability

NASL family	PhotonOS Local Security Checks
NASL id	PHOTONOS_PHSA-2018-2_0-0010.NASL
description	An update of [linux] packages for PhotonOS has been released. This kernel update fixes vulnerability CVE-2017-5754 which is commonly known as Meltdown vulnerability.
last seen	2019-02-21
modified	2019-02-07
plugin id	111280
published	2018-07-24
reporter	Tenable
source	https://www.tenable.com/plugins/index.php?view=single&id=111280
title	Photon OS 2.0 : linux (PhotonOS-PHSA-2018-2.0-0010) (Meltdown) (deprecated)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-1351.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6.6 Advanced Update Support and Red Hat Enterprise Linux 6.6 Telco Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. [Updated 10 May 2018] The references to CVE-2017-5754 x86 (32-bit) mitigation were removed because Red Hat Enterprise Linux 6.6 Advanced Update Support and Red Hat Enterprise Linux 6.6 Telco Extended Update Support do not include support for x86 32-bit architecture. Consequently, impact rating of this erratum was changed from Important to Moderate. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * Kernel: error in exception handling leads to DoS (CVE-2018-8897) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting this issue. Bug Fix(es) : * If an NFSv3 client mounted a subdirectory of an exported file system, a directory entry to the mount hosting the export was incorrectly held even after clearing the cache. Consequently, attempts to unmount the subdirectory with the umount command failed with the EBUSY error. With this update, the underlying source code has been fixed, and the unmount operation now succeeds as expected in the described situation. (BZ#1538588) * The kernel build requirements have been updated to the GNU Compiler Collection (GCC) compiler version that has the support for Retpolines. The Retpolines mechanism is a software construct that leverages specific knowledge of the underlying hardware to mitigate the branch target injection, also known as Spectre variant 2 vulnerability described in CVE-2017-5715. (BZ#1554254)
last seen	2020-06-01
modified	2020-06-02
plugin id	109641
published	2018-05-09
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109641
title	RHEL 6 : kernel (RHSA-2018:1351)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-2528-1.NASL
description	This update for xen fixes the following issues: These security issue were fixed : - CVE-2018-3646: Systems with microprocessors utilizing speculative execution and address translations may have allowed unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access with guest OS privilege via a terminal page fault and a side-channel analysis (bsc#1091107, bsc#1027519). - CVE-2018-12617: An integer overflow that could cause a segmentation fault in qmp_guest_file_read() with g_malloc() in qemu-guest-agent was fixed (bsc#1098744) - CVE-2018-3665: System software utilizing Lazy FP state restore technique on systems using Intel Core-based microprocessors may potentially allow a local process to infer data from another process through a speculative execution side channel. (bsc#1095242) - CVE-2018-3639: Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4. (bsc#1092631) - CVE-2017-5715: Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis. (bsc#1074562) - CVE-2017-5753: Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis. (bsc#1074562) - CVE-2017-5754: Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache. (bsc#1074562) - CVE-2018-12891: Certain PV MMU operations may take a long time to process. For that reason Xen explicitly checks for the need to preempt the current vCPU at certain points. A few rarely taken code paths did bypass such checks. By suitably enforcing the conditions through its own page table contents, a malicious guest may cause such bypasses to be used for an unbounded number of iterations. A malicious or buggy PV guest may cause a Denial of Service (DoS) affecting the entire host. Specifically, it may prevent use of a physical CPU for an indeterminate period of time. (bsc#1097521) - CVE-2018-12893: One of the fixes in XSA-260 added some safety checks to help prevent Xen livelocking with debug exceptions. Unfortunately, due to an oversight, at least one of these safety checks can be triggered by a guest. A malicious PV guest can crash Xen, leading to a Denial of Service. Only x86 PV guests can exploit the vulnerability. x86 HVM and PVH guests cannot exploit the vulnerability. An attacker needs to be able to control hardware debugging facilities to exploit the vulnerability, but such permissions are typically available to unprivileged users. (bsc#1097522) - CVE-2018-11806: m_cat in slirp/mbuf.c in Qemu has a heap-based buffer overflow via incoming fragmented datagrams. (bsc#1096224) - CVE-2018-10982: An issue was discovered in Xen allowed x86 HVM guest OS users to cause a denial of service (unexpectedly high interrupt number, array overrun, and hypervisor crash) or possibly gain hypervisor privileges by setting up an HPET timer to deliver interrupts in IO-APIC mode, aka vHPET interrupt injection. (bsc#1090822) - CVE-2018-10981: An issue was discovered in Xen that allowed x86 HVM guest OS users to cause a denial of service (host OS infinite loop) in situations where a QEMU device model attempts to make invalid transitions between states of a request. (bsc#1090823) Following bugs were fixed : - After updating to kernel 3.0.101-0.47.106.32-xen system crashes in check_bugs() (bsc#1097206) - bsc#1079730 - in xen-kmp, unplug emulated devices after migration This is required since xen-4.10 and/or qemu-2.10 because the state of unplug is not propagated from one dom0 to another. Without this unplug qemu
last seen	2020-06-01
modified	2020-06-02
plugin id	112147
published	2018-08-28
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/112147
title	SUSE SLES11 Security Update : xen (SUSE-SU-2018:2528-1) (Foreshadow) (Meltdown) (Spectre)

NASL family	AIX Local Security Checks
NASL id	AIX_IJ03035.NASL
description	Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis.
last seen	2020-06-01
modified	2020-06-02
plugin id	106315
published	2018-01-25
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106315
title	AIX 7.2 TL 1 : spectre_meltdown (IJ03035) (Meltdown) (Spectre)

NASL family	Ubuntu Local Security Checks
NASL id	UBUNTU_USN-3541-2.NASL
description	USN-3541-1 addressed vulnerabilities in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. This update provides mitigations for the i386 (CVE-2017-5753 only), amd64, ppc64el, and s390x architectures. (CVE-2017-5715, CVE-2017-5753) USN-3523-2 mitigated CVE-2017-5754 (Meltdown) for the amd64 architecture in the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. This update provides the corresponding mitigations for the ppc64el architecture. Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5754). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	106271
published	2018-01-23
reporter	Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106271
title	Ubuntu 16.04 LTS : linux-hwe, linux-azure, linux-gcp, linux-oem vulnerabilities (USN-3541-2) (Meltdown) (Spectre)

NASL family	Oracle Linux Local Security Checks
NASL id	ORACLELINUX_ELSA-2018-1062.NASL
description	From Red Hat Security Advisory 2018:1062 : An update for kernel is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * hw: cpu: speculative execution permission faults handling (CVE-2017-5754, Important, KVM for Power) * kernel: Buffer overflow in firewire driver via crafted incoming packets (CVE-2016-8633, Important) * kernel: Use-after-free vulnerability in DCCP socket (CVE-2017-8824, Important) * Kernel: kvm: nVMX: L2 guest could access hardware(L0) CR8 register (CVE-2017-12154, Important) * kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166, Important) * kernel: media: use-after-free in [tuner-xc2028] media driver (CVE-2016-7913, Moderate) * kernel: drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl() (CVE-2017-7294, Moderate) * kernel: Incorrect type conversion for size during dma allocation (CVE-2017-9725, Moderate) * kernel: memory leak when merging buffers in SCSI IO vectors (CVE-2017-12190, Moderate) * kernel: vfs: BUG in truncate_inode_pages_range() and fuse client (CVE-2017-15121, Moderate) * kernel: Use-after-free in userfaultfd_event_wait_completion function in userfaultfd.c (CVE-2017-15126, Moderate) * kernel: net: double-free and memory corruption in get_net_ns_by_id() (CVE-2017-15129, Moderate) * kernel: Use-after-free in snd_seq_ioctl_create_port() (CVE-2017-15265, Moderate) * kernel: Missing capabilities check in net/netfilter/nfnetlink_cthelper.c allows for unprivileged access to systemwide nfnl_cthelper_list structure (CVE-2017-17448, Moderate) * kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity (CVE-2017-17449, Moderate) * kernel: Unallocated memory access by malicious USB device via bNumInterfaces overflow (CVE-2017-17558, Moderate) * kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/ netfilter/xt_TCPMSS.c (CVE-2017-18017, Moderate) * kernel: Race condition in drivers/md/dm.c:dm_get_from_kobject() allows local users to cause a denial of service (CVE-2017-18203, Moderate) * kernel: kvm: Reachable BUG() on out-of-bounds guest IRQ (CVE-2017-1000252, Moderate) * Kernel: KVM: DoS via write flood to I/O port 0x80 (CVE-2017-1000407, Moderate) * kernel: Stack information leak in the EFS element (CVE-2017-1000410, Moderate) * kernel: Kernel address information leak in drivers/acpi/ sbshc.c:acpi_smbus_hc_add() function potentially allowing KASLR bypass (CVE-2018-5750, Moderate) * kernel: Race condition in sound system can lead to denial of service (CVE-2018-1000004, Moderate) * kernel: multiple Low security impact security issues (CVE-2016-3672, CVE-2017-14140, CVE-2017-15116, CVE-2017-15127, CVE-2018-6927, Low) Red Hat would like to thank Eyal Itkin for reporting CVE-2016-8633; Google Project Zero for reporting CVE-2017-5754; Mohamed Ghannam for reporting CVE-2017-8824; Jim Mattson (Google.com) for reporting CVE-2017-12154; Vitaly Mayatskih for reporting CVE-2017-12190; Andrea Arcangeli (Engineering) for reporting CVE-2017-15126; Kirill Tkhai for reporting CVE-2017-15129; Jan H. Schonherr (Amazon) for reporting CVE-2017-1000252; and Armis Labs for reporting CVE-2017-1000410. The CVE-2017-15121 issue was discovered by Miklos Szeredi (Red Hat) and the CVE-2017-15116 issue was discovered by ChunYu Wang (Red Hat). For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.5 Release Notes linked from the References section.
last seen	2020-06-01
modified	2020-06-02
plugin id	109113
published	2018-04-18
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109113
title	Oracle Linux 7 : kernel (ELSA-2018-1062)

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_NT_MS18_JAN_4056897.NASL
description	The remote Windows host is missing security update 4056897 or cumulative update 4056894. It is, therefore, affected by multiple vulnerabilities : - An vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) - An elevation of privilege vulnerability exists in Windows Adobe Type Manager Font Driver (ATMFD.dll) when it fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code and take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0788) - An information disclosure vulnerability exists in Windows Adobe Type Manager Font Driver (ATMFD.dll) when it fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could potentially read data that was not intended to be disclosed. Note that this vulnerability would not allow an attacker to execute code or to elevate their user rights directly, but it could be used to obtain information that could be used to try to further compromise the affected system. (CVE-2018-0754) - A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0762, CVE-2018-0772) - An information disclosure vulnerability exists in the way that the Color Management Module (ICM32.dll) handles objects in memory. This vulnerability allows an attacker to retrieve information to bypass usermode ASLR (Address Space Layout Randomization) on a targeted system. By itself, the information disclosure does not allow arbitrary code execution; however, it could allow arbitrary code to be run if the attacker uses it in combination with another vulnerability. (CVE-2018-0741) - An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. (CVE-2018-0747) - An elevation of privilege vulnerability exists in the Microsoft Server Message Block (SMB) Server when an attacker with valid credentials attempts to open a specially crafted file over the SMB protocol on the same machine. An attacker who successfully exploited this vulnerability could bypass certain security checks in the operating system. (CVE-2018-0749) - An elevation of privilege vulnerability exists in the way that the Windows Kernel API enforces permissions. An attacker who successfully exploited the vulnerability could impersonate processes, interject cross-process communication, or interrupt system functionality. (CVE-2018-0748) - A Win32k information disclosure vulnerability exists when the Windows GDI component improperly discloses kernel memory addresses. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0750)
last seen	2020-06-01
modified	2020-06-02
plugin id	105552
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105552
title	KB4056897: Windows 7 and Windows Server 2008 R2 January 2018 Security Update (Meltdown)(Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0678-1.NASL
description	This update for xen fixes several issues. These security issues were fixed : - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via side effects of speculative execution, aka
last seen	2020-06-01
modified	2020-06-02
plugin id	108369
published	2018-03-15
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108369
title	SUSE SLES11 Security Update : xen (SUSE-SU-2018:0678-1) (Meltdown) (Spectre)

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_NT_MS18_JAN_4056892.NASL
description	The remote Windows host is missing security update 4056892 or 4073291. It is, therefore, affected by multiple vulnerabilities : - An vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) - An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0744) - An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory in Microsoft Edge. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0767, CVE-2018-0780, CVE-2018-0800) - An elevation of privilege vulnerability exists when Microsoft Edge does not properly enforce cross-domain policies, which could allow an attacker to access information from one domain and inject it into another domain. (CVE-2018-0803) - An information disclosure vulnerability exists in Windows Adobe Type Manager Font Driver (ATMFD.dll) when it fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could potentially read data that was not intended to be disclosed. Note that this vulnerability would not allow an attacker to execute code or to elevate their user rights directly, but it could be used to obtain information that could be used to try to further compromise the affected system. (CVE-2018-0754) - A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0762, CVE-2018-0772) - An information disclosure vulnerability exists when Microsoft Edge PDF Reader improperly handles objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0766) - An elevation of privilege vulnerability exists in the way that the Windows Kernel API enforces permissions. An attacker who successfully exploited the vulnerability could impersonate processes, interject cross-process communication, or interrupt system functionality. (CVE-2018-0748, CVE-2018-0751, CVE-2018-0752) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0758, CVE-2018-0768, CVE-2018-0769, CVE-2018-0770, CVE-2018-0773, CVE-2018-0774, CVE-2018-0775, CVE-2018-0776, CVE-2018-0777, CVE-2018-0778, CVE-2018-0781) - An elevation of privilege vulnerability exists in the Microsoft Server Message Block (SMB) Server when an attacker with valid credentials attempts to open a specially crafted file over the SMB protocol on the same machine. An attacker who successfully exploited this vulnerability could bypass certain security checks in the operating system. (CVE-2018-0749) - A denial of service vulnerability exists in the way that Windows handles objects in memory. An attacker who successfully exploited the vulnerability could cause a target system to stop responding. Note that the denial of service condition would not allow an attacker to execute code or to elevate user privileges. However, the denial of service condition could prevent authorized users from using system resources. The security update addresses the vulnerability by correcting how Windows handles objects in memory. (CVE-2018-0753) - An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. (CVE-2018-0745, CVE-2018-0746, CVE-2018-0747) - An elevation of privilege vulnerability exists due to an integer overflow in Windows Subsystem for Linux. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. (CVE-2018-0743)
last seen	2020-06-01
modified	2020-06-02
plugin id	105550
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105550
title	KB4056892: Windows 10 Version 1709 and Windows Server Version 1709 January 2018 Security Update (Meltdown)(Spectre)

NASL family	OracleVM Local Security Checks
NASL id	ORACLEVM_OVMSA-2018-0010.NASL
description	The remote OracleVM system is missing necessary patches to address critical security updates : - x86/pti/efi: broken conversion from efi to kernel page table (Pavel Tatashin) [Orabug: 27363926] [Orabug: 27352353] (CVE-2017-5754) - x86/spec: Always set IBRS to guest value on VMENTER and host on VMEXIT (redux) (Konrad Rzeszutek Wilk) [Orabug: 27369994] - x86/IBRS: Make sure we restore MSR_IA32_SPEC_CTRL to a valid value (Boris Ostrovsky) [Orabug: 27362581] - x86/IBRS/IBPB: Set sysctl_ibrs/ibpb_enabled properly (Boris Ostrovsky) [Orabug: 27363792] - x86/spec_ctrl: Add missing
last seen	2020-06-01
modified	2020-06-02
plugin id	106120
published	2018-01-18
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106120
title	OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0010) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-1346.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6.7 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * hw: cpu: speculative execution permission faults handling (CVE-2017-5754, x86 32-bit) * Kernel: error in exception handling leads to DoS (CVE-2018-8897) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Google Project Zero for reporting CVE-2017-5754 and Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting CVE-2018-8897. Bug Fix(es) : * The kernel build requirements have been updated to the GNU Compiler Collection (GCC) compiler version that has the support for Retpolines. The Retpolines mechanism is a software construct that leverages specific knowledge of the underlying hardware to mitigate the branch target injection, also known as Spectre variant 2 vulnerability described in CVE-2017-5715. (BZ#1554253)
last seen	2020-06-01
modified	2020-06-02
plugin id	109636
published	2018-05-09
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109636
title	RHEL 6 : kernel (RHSA-2018:1346) (Meltdown)

NASL family	OracleVM Local Security Checks
NASL id	ORACLEVM_OVMSA-2018-0008.NASL
description	The remote OracleVM system is missing necessary patches to address critical security updates : - x86/ia32: save and clear registers on syscall. (Jamie Iles) [Orabug: 27355759] (CVE-2017-5754) - x86/IBRS: Save current status of MSR_IA32_SPEC_CTRL (Boris Ostrovsky) - pti: Rename X86_FEATURE_KAISER to X86_FEATURE_PTI (Pavel Tatashin) [Orabug: 27352353] (CVE-2017-5754) - usb/core: usb_alloc_dev: fix setting of ->portnum (Nicolai Stange) - x86/spec_ctrl: Add missing IBRS_DISABLE (Konrad Rzeszutek Wilk) - Make use of ibrs_inuse consistent. (Jun Nakajima) - x86/kvm: Set IBRS on VMEXIT if guest disabled it. (Konrad Rzeszutek Wilk) - Re-introduce clearing of r12-15, rbp, rbx (Kris Van Hees) [Orabug: 27352353] (CVE-2017-5754) - x86: more ibrs/pti fixes (Pavel Tatashin) [Orabug: 27352353] (CVE-2017-5754) - x86/spec: Actually do the check for in_use on ENABLE_IBRS (Konrad Rzeszutek Wilk) (CVE-2017-5715) - kvm: svm: Expose the CPUID.0x80000008 ebx flag. (Konrad Rzeszutek Wilk) (CVE-2017-5715) - x86/spec_ctrl: Provide the sysfs version of the ibrs_enabled (Konrad Rzeszutek Wilk) (CVE-2017-5715) - x86: Use better #define for FEATURE_ENABLE_IBRS and 0 (Konrad Rzeszutek Wilk) (CVE-2017-5715) - x86: Instead of 0x2, 0x4, and 0x1 use #defines. (Konrad Rzeszutek Wilk) (CVE-2017-5715) - kpti: Disable when running under Xen PV (Konrad Rzeszutek Wilk) [Orabug: 27352353] (CVE-2017-5754) - x86: Don
last seen	2020-06-01
modified	2020-06-02
plugin id	105762
published	2018-01-12
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105762
title	OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0008) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0011.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6.7 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. [Updated 23rd January 2019] The text has been updated to correct the list of architectures addressed by the CVE-2017-5753 mitigation. No changes have been made to the packages. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update, mitigations for x86 (CVE-2017-5753) and x86-64 (CVE-2017-5753, CVE-2017-5715, and CVE-2017-5754) architectures are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105527
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105527
title	RHEL 6 : kernel (RHSA-2018:0011) (Meltdown) (Spectre)

NASL family	Oracle Linux Local Security Checks
NASL id	ORACLELINUX_ELSA-2018-4109.NASL
description	The remote Oracle Linux host is missing a security update for the Unbreakable Enterprise kernel package(s).
last seen	2020-06-01
modified	2020-06-02
plugin id	109829
published	2018-05-16
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109829
title	Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4109) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0638-1.NASL
description	This update for xen fixes several issues. This new feature was included : - add script and sysv service to watch for vcpu online/offline events in a HVM domU These security issues were fixed : - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via side effects of speculative execution, aka
last seen	2020-06-01
modified	2020-06-02
plugin id	107254
published	2018-03-09
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/107254
title	SUSE SLES11 Security Update : xen (SUSE-SU-2018:0638-1) (Meltdown) (Spectre)

NASL family	AIX Local Security Checks
NASL id	AIX_IJ03034.NASL
description	Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis.
last seen	2020-06-01
modified	2020-06-02
plugin id	106314
published	2018-01-25
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106314
title	AIX 7.2 TL 0 : spectre_meltdown (IJ03034) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-1181-1.NASL
description	This update for xen fixes several issues. These security issues were fixed : - CVE-2018-8897: Prevent mishandling of debug exceptions on x86 (XSA-260, bsc#1090820) - Handle HPET timers in IO-APIC mode correctly to prevent malicious or buggy HVM guests from causing a hypervisor crash or potentially privilege escalation/information leaks (XSA-261, bsc#1090822) - Prevent unbounded loop, induced by qemu allowing an attacker to permanently keep a physical CPU core busy (XSA-262, bsc#1090823) - CVE-2018-10472: x86 HVM guest OS users (in certain configurations) were able to read arbitrary dom0 files via QMP live insertion of a CDROM, in conjunction with specifying the target file as the backing file of a snapshot (bsc#1089152). - CVE-2018-10471: x86 PV guest OS users were able to cause a denial of service (out-of-bounds zero write and hypervisor crash) via unexpected INT 80 processing, because of an incorrect fix for CVE-2017-5754 (bsc#1089635). - CVE-2018-7550: The load_multiboot function allowed local guest OS users to execute arbitrary code on the host via a mh_load_end_addr value greater than mh_bss_end_addr, which triggers an out-of-bounds read or write memory access (bsc#1083292). The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	109676
published	2018-05-10
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109676
title	SUSE SLES11 Security Update : xen (SUSE-SU-2018:1181-1) (Meltdown)

NASL family	AIX Local Security Checks
NASL id	AIX_IJ03029.NASL
description	Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis.
last seen	2020-06-01
modified	2020-06-02
plugin id	106310
published	2018-01-25
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106310
title	AIX 5.3 TL 12 : spectre_meltdown (IJ03029) (Meltdown) (Spectre)

NASL family	Ubuntu Local Security Checks
NASL id	UBUNTU_USN-3540-1.NASL
description	Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. This update provides mitigations for the i386 (CVE-2017-5753 only), amd64, ppc64el, and s390x architectures. (CVE-2017-5715, CVE-2017-5753) USN-3522-1 mitigated CVE-2017-5754 (Meltdown) for the amd64 architecture in Ubuntu 16.04 LTS. This update provides the corresponding mitigations for the ppc64el architecture. Original advisory details : Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5754). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	106268
published	2018-01-23
reporter	Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106268
title	Ubuntu 16.04 LTS : linux, linux-aws, linux-euclid vulnerabilities (USN-3540-1) (Meltdown) (Spectre)

NASL family	Oracle Linux Local Security Checks
NASL id	ORACLELINUX_ELSA-2018-4006.NASL
description	Description of changes: [4.1.12-112.14.10.el7uek] - x86/ia32: save and clear registers on syscall. (Jamie Iles) [Orabug: 27355759] {CVE-2017-5754} - x86/IBRS: Save current status of MSR_IA32_SPEC_CTRL (Boris Ostrovsky) [Orabug: 27355887] - pti: Rename X86_FEATURE_KAISER to X86_FEATURE_PTI (Pavel Tatashin) [Orabug: 27352353] {CVE-2017-5754} - usb/core: usb_alloc_dev(): fix setting of ->portnum (Nicolai Stange) [Orabug: 27356522] - x86/spec_ctrl: Add missing IBRS_DISABLE (Konrad Rzeszutek Wilk) - Make use of ibrs_inuse consistent. (Jun Nakajima) [4.1.12-112.14.8.el7uek] - x86/kvm: Set IBRS on VMEXIT if guest disabled it. (Konrad Rzeszutek Wilk) [4.1.12-112.14.7.el7uek] - Re-introduce clearing of r12-15, rbp, rbx (Kris Van Hees) [Orabug: 27352353] {CVE-2017-5754} - x86: more ibrs/pti fixes (Pavel Tatashin) [Orabug: 27352353] {CVE-2017-5754} - x86/spec: Actually do the check for in_use on ENABLE_IBRS (Konrad Rzeszutek Wilk) {CVE-2017-5715} - kvm: svm: Expose the CPUID.0x80000008 ebx flag. (Konrad Rzeszutek Wilk) {CVE-2017-5715} - x86/spec_ctrl: Provide the sysfs version of the ibrs_enabled (Konrad Rzeszutek Wilk) {CVE-2017-5715} - x86: Use better #define for FEATURE_ENABLE_IBRS and 0 (Konrad Rzeszutek Wilk) {CVE-2017-5715} - x86: Instead of 0x2, 0x4, and 0x1 use #defines. (Konrad Rzeszutek Wilk) {CVE-2017-5715} - kpti: Disable when running under Xen PV (Konrad Rzeszutek Wilk) [Orabug: 27352353] {CVE-2017-5754} - x86: Don
last seen	2020-06-01
modified	2020-06-02
plugin id	105760
published	2018-01-12
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105760
title	Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4006) (Meltdown) (Spectre)

NASL family	Oracle Linux Local Security Checks
NASL id	ORACLELINUX_ELSA-2018-4020.NASL
description	Description of changes: [2.6.39-400.298.2.el6uek] - x86: Use PRED_CMD MSR when ibpb is enabled (Konrad Rzeszutek Wilk) [Orabug: 27369777] {CVE-2017-5715} {CVE-2017-5753} - x86/spec: Don
last seen	2020-06-01
modified	2020-06-02
plugin id	106328
published	2018-01-25
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106328
title	Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2018-4020) (Meltdown) (Spectre)

NASL family	CentOS Local Security Checks
NASL id	CENTOS_RHSA-2018-1062.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * hw: cpu: speculative execution permission faults handling (CVE-2017-5754, Important, KVM for Power) * kernel: Buffer overflow in firewire driver via crafted incoming packets (CVE-2016-8633, Important) * kernel: Use-after-free vulnerability in DCCP socket (CVE-2017-8824, Important) * Kernel: kvm: nVMX: L2 guest could access hardware(L0) CR8 register (CVE-2017-12154, Important) * kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166, Important) * kernel: media: use-after-free in [tuner-xc2028] media driver (CVE-2016-7913, Moderate) * kernel: drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl() (CVE-2017-7294, Moderate) * kernel: Incorrect type conversion for size during dma allocation (CVE-2017-9725, Moderate) * kernel: memory leak when merging buffers in SCSI IO vectors (CVE-2017-12190, Moderate) * kernel: vfs: BUG in truncate_inode_pages_range() and fuse client (CVE-2017-15121, Moderate) * kernel: Use-after-free in userfaultfd_event_wait_completion function in userfaultfd.c (CVE-2017-15126, Moderate) * kernel: net: double-free and memory corruption in get_net_ns_by_id() (CVE-2017-15129, Moderate) * kernel: Use-after-free in snd_seq_ioctl_create_port() (CVE-2017-15265, Moderate) * kernel: Missing capabilities check in net/netfilter/nfnetlink_cthelper.c allows for unprivileged access to systemwide nfnl_cthelper_list structure (CVE-2017-17448, Moderate) * kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity (CVE-2017-17449, Moderate) * kernel: Unallocated memory access by malicious USB device via bNumInterfaces overflow (CVE-2017-17558, Moderate) * kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/ netfilter/xt_TCPMSS.c (CVE-2017-18017, Moderate) * kernel: Race condition in drivers/md/dm.c:dm_get_from_kobject() allows local users to cause a denial of service (CVE-2017-18203, Moderate) * kernel: kvm: Reachable BUG() on out-of-bounds guest IRQ (CVE-2017-1000252, Moderate) * Kernel: KVM: DoS via write flood to I/O port 0x80 (CVE-2017-1000407, Moderate) * kernel: Stack information leak in the EFS element (CVE-2017-1000410, Moderate) * kernel: Kernel address information leak in drivers/acpi/ sbshc.c:acpi_smbus_hc_add() function potentially allowing KASLR bypass (CVE-2018-5750, Moderate) * kernel: Race condition in sound system can lead to denial of service (CVE-2018-1000004, Moderate) * kernel: multiple Low security impact security issues (CVE-2016-3672, CVE-2017-14140, CVE-2017-15116, CVE-2017-15127, CVE-2018-6927, Low) Red Hat would like to thank Eyal Itkin for reporting CVE-2016-8633; Google Project Zero for reporting CVE-2017-5754; Mohamed Ghannam for reporting CVE-2017-8824; Jim Mattson (Google.com) for reporting CVE-2017-12154; Vitaly Mayatskih for reporting CVE-2017-12190; Andrea Arcangeli (Engineering) for reporting CVE-2017-15126; Kirill Tkhai for reporting CVE-2017-15129; Jan H. Schonherr (Amazon) for reporting CVE-2017-1000252; and Armis Labs for reporting CVE-2017-1000410. The CVE-2017-15121 issue was discovered by Miklos Szeredi (Red Hat) and the CVE-2017-15116 issue was discovered by ChunYu Wang (Red Hat). For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.5 Release Notes linked from the References section.
last seen	2020-06-01
modified	2020-06-02
plugin id	109380
published	2018-04-27
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109380
title	CentOS 7 : kernel (CESA-2018:1062)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0010.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 7.2 Advanced Update Support, Red Hat Enterprise Linux 7.2 Telco Extended Update Support, and Red Hat Enterprise Linux 7.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update mitigations for x86-64 architecture are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105526
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105526
title	RHEL 7 : kernel (RHSA-2018:0010) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0044.NASL
description	An update for redhat-virtualization-host is now available for RHEV 3.X Hypervisor and Agents for RHEL-7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The ovirt-node-ng packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host
last seen	2020-06-01
modified	2020-06-02
plugin id	105675
published	2018-01-09
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105675
title	RHEL 7 : redhat-virtualization-host (RHSA-2018:0044) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0496.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6.7 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * hw: cpu: speculative execution branch target injection (s390-only) (CVE-2017-5715, Important) * hw: cpu: speculative execution bounds-check bypass (s390 and powerpc) (CVE-2017-5753, Important) * hw: cpu: speculative execution permission faults handling (powerpc-only) (CVE-2017-5754) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es) : * If an NFSv3 client mounted a subdirectory of an exported file system, a directory entry to the mount hosting the export was incorrectly held even after clearing the cache. Consequently, attempts to unmount the subdirectory with the umount command failed with the EBUSY error. With this update, the underlying source code has been fixed, and the unmount operation now succeeds as expected in the described situation. (BZ#1538587) * The Return Trampoline (Retpoline) mechanism mitigates the branch target injection, also known as the Spectre variant 2 vulnerability. With this update, Retpoline has been implemented into the Red Hat Enterprise Linux kernel. (BZ#1543023)
last seen	2020-06-01
modified	2020-06-02
plugin id	108326
published	2018-03-14
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108326
title	RHEL 6 : kernel (RHSA-2018:0496) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	OPENSUSE-2018-169.NASL
description	This update for xen fixes several issues. These security issues were fixed : - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via side effects of speculative execution, aka
last seen	2020-06-05
modified	2018-02-16
plugin id	106864
published	2018-02-16
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106864
title	openSUSE Security Update : xen (openSUSE-2018-169) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-1658-1.NASL
description	This update for xen fixes several issues. These security issues were fixed : - CVE-2018-3639: Prevent attackers with local user access from extracting information via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4 (bsc#1092631). - CVE-2017-5753,CVE-2017-5715,CVE-2017-5754: Improved Spectre v2 mitigations (bsc#1074562). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	110509
published	2018-06-13
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/110509
title	SUSE SLES12 Security Update : xen (SUSE-SU-2018:1658-1) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	OPENSUSE-2019-418.NASL
description	This update for xen to version 4.10.1 fixes several issues (bsc#1027519). These security issues were fixed : - CVE-2018-3639: Prevent attackers with local user access from extracting information via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4 (bsc#1092631). - CVE-2017-5753,CVE-2017-5715,CVE-2017-5754: Improved Spectre v2 mitigations (bsc#1074562). This non-security issue was fixed : - Always call qemus xen-save-devices-state in suspend/resume to fix migration with qcow2 images (bsc#1079730)
last seen	2020-06-01
modified	2020-06-02
plugin id	123180
published	2019-03-27
reporter	This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/123180
title	openSUSE Security Update : xen (openSUSE-2019-418) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-1699-1.NASL
description	This update for xen fixes several issues. This feature was added : - Added support for qemu monitor command These security issues were fixed : - CVE-2018-3639: Prevent attackers with local user access from extracting information via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4 (bsc#1092631). - CVE-2017-5753,CVE-2017-5715,CVE-2017-5754: Improved Spectre v2 mitigations (bsc#1074562). The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	110596
published	2018-06-18
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/110596
title	SUSE SLES12 Security Update : xen (SUSE-SU-2018:1699-1) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0555-1.NASL
description	The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes. The following security bugs were fixed : - CVE-2017-5715: Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis (bnc#1068032). The previous fix using CPU Microcode has been complemented by building the Linux Kernel with return trampolines aka
last seen	2020-06-01
modified	2020-06-02
plugin id	107055
published	2018-02-28
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/107055
title	SUSE SLES11 Security Update : kernel (SUSE-SU-2018:0555-1) (Meltdown) (Spectre)

NASL family	OracleVM Local Security Checks
NASL id	ORACLEVM_OVMSA-2018-0218.NASL
description	The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0218 for details.
last seen	2020-06-01
modified	2020-06-02
plugin id	109987
published	2018-05-23
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109987
title	OracleVM 3.4 : xen (OVMSA-2018-0218) (Meltdown) (Spectre)

NASL family	OracleVM Local Security Checks
NASL id	ORACLEVM_OVMSA-2018-0016.NASL
description	The remote OracleVM system is missing necessary patches to address critical security updates : - x86: Add another set of MSR accessor functions (Borislav Petkov) [Orabug: 27444923] (CVE-2017-5753) - userns: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] (CVE-2017-5753) - udf: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] (CVE-2017-5753) - fs: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] (CVE-2017-5753) - qla2xxx: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] (CVE-2017-5753) - p54: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] (CVE-2017-5753) - carl9170: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] (CVE-2017-5753) - uvcvideo: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] (CVE-2017-5753) - locking/barriers: introduce new observable speculation barrier (Elena Reshetova) [Orabug: 27444923] (CVE-2017-5753) - x86/cpu/AMD: Remove now unused definition of MFENCE_RDTSC feature (Elena Reshetova) [Orabug: 27444923] (CVE-2017-5753) - x86/cpu/AMD: Make the LFENCE instruction serialized (Elena Reshetova) [Orabug: 27444923] (CVE-2017-5753) - x86/rsb: add comment specifying why we skip STUFF_RSB (Ankur Arora) [Orabug: 27451658] (CVE-2017-5715) - x86/rsb: make STUFF_RSB jmp labels more robust (Ankur Arora) [Orabug: 27451658] (CVE-2017-5715) - x86/spec: Also print IBRS if IBPB is disabled. (Konrad Rzeszutek Wilk) (CVE-2017-5715) - x86/spectre: Drop the warning about ibrs being obsolete. (Konrad Rzeszutek Wilk) (CVE-2017-5715) - Add set_ibrs_disabled and set_ibpb_disabled (Konrad Rzeszutek Wilk) [Orabug: 27376697] (CVE-2017-5715) - x86/spec: Don
last seen	2020-06-01
modified	2020-06-02
plugin id	106524
published	2018-01-31
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106524
title	OracleVM 3.3 : Unbreakable / etc (OVMSA-2018-0016) (Meltdown) (Spectre)

NASL family	Oracle Linux Local Security Checks
NASL id	ORACLELINUX_ELSA-2018-4022.NASL
description	Description of changes: kernel-uek [3.8.13-118.20.2.el7uek] - x86: Add another set of MSR accessor functions (Borislav Petkov) [Orabug: 27444923] {CVE-2017-5753} - userns: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753} - udf: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753} - fs: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753} - qla2xxx: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753} - p54: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753} - carl9170: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753} - uvcvideo: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753} - locking/barriers: introduce new observable speculation barrier (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753} - x86/cpu/AMD: Remove now unused definition of MFENCE_RDTSC feature (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753} - x86/cpu/AMD: Make the LFENCE instruction serialized (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753} - x86/rsb: add comment specifying why we skip STUFF_RSB (Ankur Arora) [Orabug: 27451658] {CVE-2017-5715} - x86/rsb: make STUFF_RSB jmp labels more robust (Ankur Arora) [Orabug: 27451658] {CVE-2017-5715} - x86/spec: Also print IBRS if IBPB is disabled. (Konrad Rzeszutek Wilk) {CVE-2017-5715} - x86/spectre: Drop the warning about ibrs being obsolete. (Konrad Rzeszutek Wilk) {CVE-2017-5715} - Add set_ibrs_disabled and set_ibpb_disabled (Konrad Rzeszutek Wilk) [Orabug: 27376697] {CVE-2017-5715} - x86/spec: Don
last seen	2020-06-01
modified	2020-06-02
plugin id	106468
published	2018-01-30
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106468
title	Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4022) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0008.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. [Updated 23rd January 2019] The text has been updated to correct the list of architectures addressed by the CVE-2017-5753 mitigation. No changes have been made to the packages. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update, mitigations for x86 (CVE-2017-5753) and x86-64 (CVE-2017-5753, CVE-2017-5715, and CVE-2017-5754) architectures are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105524
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105524
title	RHEL 6 : kernel (RHSA-2018:0008) (Meltdown) (Spectre)

NASL family	Ubuntu Local Security Checks
NASL id	UBUNTU_USN-3522-4.NASL
description	USN-3522-2 fixed a vulnerability in the Linux Hardware Enablement kernel for Ubuntu 14.04 LTS to address Meltdown (CVE-2017-5754). Unfortunately, that update introduced a regression where a few systems failed to boot successfully. This update fixes the problem. We apologize for the inconvenience. Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	105746
published	2018-01-11
reporter	Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105746
title	Ubuntu 14.04 LTS : linux-lts-xenial regression (USN-3522-4) (Meltdown)

NASL family	OracleVM Local Security Checks
NASL id	ORACLEVM_OVMSA-2018-0035.NASL
description	The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0035 for details.
last seen	2020-06-01
modified	2020-06-02
plugin id	109158
published	2018-04-19
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109158
title	OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0035) (Dirty COW) (Meltdown) (Spectre)

NASL family	Scientific Linux Local Security Checks
NASL id	SL_20180103_KERNEL_ON_SL7_X.NASL
description	Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. The performance impact of these patches may vary considerably based on workload and hardware configuration. In this update mitigations for x86-64 architecture are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-03-18
modified	2018-01-04
plugin id	105535
published	2018-01-04
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105535
title	Scientific Linux Security Update : kernel on SL7.x x86_64 (20180103) (Meltdown) (Spectre)

NASL family	OracleVM Local Security Checks
NASL id	ORACLEVM_OVMSA-2018-0015.NASL
description	The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0015 for details.
last seen	2020-06-01
modified	2020-06-02
plugin id	106469
published	2018-01-30
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106469
title	OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0015) (BlueBorne) (Meltdown) (Spectre) (Stack Clash)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0151.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update initial mitigations for IBM Power (PowerPC) and IBM zSeries (S390) architectures are provided. * Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	106330
published	2018-01-25
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106330
title	RHEL 7 : kernel (RHSA-2018:0151) (Meltdown) (Spectre)

NASL family	Oracle Linux Local Security Checks
NASL id	ORACLELINUX_ELSA-2018-4071.NASL
description	The remote Oracle Linux host is missing a security update for the Unbreakable Enterprise kernel package(s).
last seen	2020-06-01
modified	2020-06-02
plugin id	109156
published	2018-04-19
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109156
title	Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4071) (Dirty COW) (Meltdown) (Spectre)

NASL family	Misc.
NASL id	VMWARE_VCENTER_VMSA-2018-0007.NASL
description	The version of VMware vCenter Server installed on the remote host is 6.5.x prior to 6.5u1f. It is, therefore, affected by multiple vulnerabilities. See advisory for details.
last seen	2020-06-01
modified	2020-06-02
plugin id	106950
published	2018-02-22
reporter	This script is Copyright (C) 2018 Tenable Network Security, Inc.
source	https://www.tenable.com/plugins/nessus/106950
title	VMware vCenter Server 6.5.x < 6.5u1f Multiple Vulnerabilities (VMSA-2018-0007) (Spectre-1) (Meltdown)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0022.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6.5 Advanced Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update mitigations for x86-64 architecture are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105563
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105563
title	RHEL 6 : kernel (RHSA-2018:0022) (Meltdown) (Spectre)

NASL family	AIX Local Security Checks
NASL id	AIX_IJ03032.NASL
description	Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis.
last seen	2020-06-01
modified	2020-06-02
plugin id	106312
published	2018-01-25
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106312
title	AIX 7.1 TL 4 : spectre_meltdown (IJ03032) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0171-1.NASL
description	The SUSE Linux Enterprise 11 SP3 LTSS kernel was updated to receive various security and bugfixes. This update is only provided as a fix update for IBM Z platform. - CVE-2017-5753 /
last seen	2020-06-01
modified	2020-06-02
plugin id	106260
published	2018-01-23
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106260
title	SUSE SLES11 Security Update : kernel (SUSE-SU-2018:0171-1) (Meltdown) (Spectre)

NASL family	Ubuntu Local Security Checks
NASL id	UBUNTU_USN-3540-2.NASL
description	USN-3540-1 addressed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. This update provides mitigations for the i386 (CVE-2017-5753 only), amd64, ppc64el, and s390x architectures. (CVE-2017-5715, CVE-2017-5753) USN-3522-2 mitigated CVE-2017-5754 (Meltdown) for the amd64 architecture in the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. This update provides the corresponding mitigations for the ppc64el architecture. Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5754). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	106269
published	2018-01-23
reporter	Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106269
title	Ubuntu 14.04 LTS : linux-lts-xenial, linux-aws vulnerabilities (USN-3540-2) (Meltdown) (Spectre)

NASL family	OracleVM Local Security Checks
NASL id	ORACLEVM_OVMSA-2018-0006.NASL
description	The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0006 for details.
last seen	2020-06-01
modified	2020-06-02
plugin id	105718
published	2018-01-10
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105718
title	OracleVM 3.4 : xen (OVMSA-2018-0006) (Meltdown) (Spectre)

NASL family	CentOS Local Security Checks
NASL id	CENTOS_RHSA-2018-0151.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update initial mitigations for IBM Power (PowerPC) and IBM zSeries (S390) architectures are provided. * Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	106353
published	2018-01-26
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106353
title	CentOS 7 : kernel (CESA-2018:0151) (Meltdown) (Spectre)

NASL family	Scientific Linux Local Security Checks
NASL id	SL_20180103_KERNEL_ON_SL6_X.NASL
description	Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. The performance impact of these patches may vary considerably based on workload and hardware configuration. In this update mitigations for x86-64 architecture are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-03-18
modified	2018-01-04
plugin id	105534
published	2018-01-04
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105534
title	Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20180103) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0219-1.NASL
description	This update for webkit2gtk3 fixes the following issues: Update to version 2.18.5 : + Disable SharedArrayBuffers from Web API. + Reduce the precision of
last seen	2020-06-01
modified	2020-06-02
plugin id	106370
published	2018-01-26
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106370
title	SUSE SLED12 / SLES12 Security Update : webkit2gtk3 (SUSE-SU-2018:0219-1) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0182.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 7.3 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update initial mitigations for IBM Power (PowerPC) and IBM zSeries (S390) architectures are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	106335
published	2018-01-25
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106335
title	RHEL 7 : kernel (RHSA-2018:0182) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0047.NASL
description	An update for redhat-virtualization-host is now available for RHEV 4.X, RHEV-H, and Agents for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The ovirt-node-ng packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host
last seen	2020-06-01
modified	2020-06-02
plugin id	105678
published	2018-01-09
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105678
title	RHEL 7 : redhat-virtualization-host (RHSA-2018:0047) (Meltdown) (Spectre)

NASL family	Oracle Linux Local Security Checks
NASL id	ORACLELINUX_ELSA-2018-4110.NASL
description	The remote Oracle Linux host is missing a security update for the Unbreakable Enterprise kernel package(s).
last seen	2020-06-01
modified	2020-06-02
plugin id	109881
published	2018-05-17
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109881
title	Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2018-4110) (Meltdown) (Spectre)

NASL family	MacOS X Local Security Checks
NASL id	MACOSX_SECUPD2018-001.NASL
description	The remote host is running Mac OS X 10.11.6 or Mac OS X 10.12.6 and is missing a security update. It is therefore, affected by multiple vulnerabilities affecting the following components : - Audio - curl - IOHIDFamily - Kernel - LinkPresentation - QuartzCore - Sandbox - Security - WebKit - Wi-Fi
last seen	2020-06-01
modified	2020-06-02
plugin id	106297
published	2018-01-24
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106297
title	macOS and Mac OS X Multiple Vulnerabilities (Security Update 2018-001) (Meltdown)

NASL family	OracleVM Local Security Checks
NASL id	ORACLEVM_OVMSA-2018-0248.NASL
description	The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0248 for details.
last seen	2020-06-01
modified	2020-06-02
plugin id	111992
published	2018-08-20
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/111992
title	OracleVM 3.4 : xen (OVMSA-2018-0248) (Bunker Buster) (Foreshadow) (Meltdown) (POODLE) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-1374.NASL
description	An update for kernel-alt is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel-alt packages provide the Linux kernel version 4.x. Security Fix(es) : * kernel: ptrace() incorrect error handling leads to corruption and DoS (CVE-2018-1000199) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Andy Lutomirski for reporting this issue. Bug Fix(es) : * Previously, the nfs_commit_inode() function did not respect the FLUSH_SYNC argument and exited even if there were already the in-flight COMMIT requests. As a consequence, the mmap() system call occasionally returned the EBUSY error on NFS, and CPU soft lockups occurred during a writeback on NFS. This update fixes nfs_commit_inode() to respect FLUSH_SYNC. As a result, mmap() does not return EBUSY, and the CPU soft lockups no longer occur during NFS writebacks. (BZ#1559869) * Recent IBM z Systems hardware contains an extension to the time-of-day clock that ensures it will be operational after the year 2042 by avoiding an overflow that would happen without it. However, the KVM hypervisor was previously unable to handle the extension correctly, which lead to guests freezing if their kernel supported the time-of-day clock extension. This update adds support for the extension to the KVM hypervisor, and KVM guests which support it no longer freeze. (BZ#1559871) * This update provides the ability to disable the
last seen	2020-06-01
modified	2020-06-02
plugin id	109831
published	2018-05-16
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109831
title	RHEL 7 : kernel-alt (RHSA-2018:1374)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0113-1.NASL
description	The SUSE Linux Enterprise 12 SP3 kernel was updated to receive various security and bugfixes. This update is only provided as a fix update for IBM Z platform. - CVE-2017-5753 /
last seen	2020-06-01
modified	2020-06-02
plugin id	106127
published	2018-01-18
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106127
title	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:0113-1) (Meltdown) (Spectre)

NASL family	Scientific Linux Local Security Checks
NASL id	SL_20180410_KERNEL_ON_SL7_X.NASL
description	Security Fix(es) : - hw: cpu: speculative execution permission faults handling (CVE-2017-5754, Important, KVM for Power) - kernel: Buffer overflow in firewire driver via crafted incoming packets (CVE-2016-8633, Important) - kernel: Use-after-free vulnerability in DCCP socket (CVE-2017-8824, Important) - Kernel: kvm: nVMX: L2 guest could access hardware(L0) CR8 register (CVE-2017-12154, Important) - kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166, Important) - kernel: media: use-after-free in [tuner-xc2028] media driver (CVE-2016-7913, Moderate) - kernel: drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl() (CVE-2017-7294, Moderate) - kernel: Incorrect type conversion for size during dma allocation (CVE-2017-9725, Moderate) - kernel: memory leak when merging buffers in SCSI IO vectors (CVE-2017-12190, Moderate) - kernel: vfs: BUG in truncate_inode_pages_range() and fuse client (CVE-2017-15121, Moderate) - kernel: Use-after-free in userfaultfd_event_wait_completion function in userfaultfd.c (CVE-2017-15126, Moderate) - kernel: net: double-free and memory corruption in get_net_ns_by_id() (CVE-2017-15129, Moderate) - kernel: Use-after-free in snd_seq_ioctl_create_port() (CVE-2017-15265, Moderate) - kernel: Missing capabilities check in net/netfilter/nfnetlink_cthelper.c allows for unprivileged access to systemwide nfnl_cthelper_list structure (CVE-2017-17448, Moderate) - kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity (CVE-2017-17449, Moderate) - kernel: Unallocated memory access by malicious USB device via bNumInterfaces overflow (CVE-2017-17558, Moderate) - kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c (CVE-2017-18017, Moderate) - kernel: Race condition in drivers/md/dm.c:dm_get_from_kobject() allows local users to cause a denial of service (CVE-2017-18203, Moderate) - kernel: kvm: Reachable BUG() on out-of-bounds guest IRQ (CVE-2017-1000252, Moderate) - Kernel: KVM: DoS via write flood to I/O port 0x80 (CVE-2017-1000407, Moderate) - kernel: Stack information leak in the EFS element (CVE-2017-1000410, Moderate) - kernel: Kernel address information leak in drivers/acpi/sbshc.c:acpi_smbus_hc_add() function potentially allowing KASLR bypass (CVE-2018-5750, Moderate) - kernel: Race condition in sound system can lead to denial of service (CVE-2018-1000004, Moderate) - kernel: multiple Low security impact security issues (CVE-2016-3672, CVE-2017-14140, CVE-2017-15116, CVE-2017-15127, CVE-2018-6927, Low) Additional Changes :
last seen	2020-03-18
modified	2018-05-01
plugin id	109449
published	2018-05-01
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109449
title	Scientific Linux Security Update : kernel on SL7.x x86_64 (20180410) (Meltdown)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0009.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 7.3 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update mitigations for x86-64 architecture are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105525
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105525
title	RHEL 7 : kernel (RHSA-2018:0009) (Meltdown) (Spectre)

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_NT_MS18_JAN_4056893.NASL
description	The remote Windows host is missing security update 4056893 or 4075199. It is, therefore, affected by multiple vulnerabilities : - An vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) - An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0744) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0758, CVE-2018-0769, CVE-2018-0770, CVE-2018-0776, CVE-2018-0777) - An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. (CVE-2018-0746, CVE-2018-0747) - An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory in Microsoft Edge. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0780) - An elevation of privilege vulnerability exists when Microsoft Edge does not properly enforce cross-domain policies, which could allow an attacker to access information from one domain and inject it into another domain. (CVE-2018-0803) - An information disclosure vulnerability exists in Windows Adobe Type Manager Font Driver (ATMFD.dll) when it fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could potentially read data that was not intended to be disclosed. Note that this vulnerability would not allow an attacker to execute code or to elevate their user rights directly, but it could be used to obtain information that could be used to try to further compromise the affected system. (CVE-2018-0754) - A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0762, CVE-2018-0772) - An information disclosure vulnerability exists when Microsoft Edge PDF Reader improperly handles objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0766) - An elevation of privilege vulnerability exists in the way that the Windows Kernel API enforces permissions. An attacker who successfully exploited the vulnerability could impersonate processes, interject cross-process communication, or interrupt system functionality. (CVE-2018-0748, CVE-2018-0751, CVE-2018-0752) - An elevation of privilege vulnerability exists in the Microsoft Server Message Block (SMB) Server when an attacker with valid credentials attempts to open a specially crafted file over the SMB protocol on the same machine. An attacker who successfully exploited this vulnerability could bypass certain security checks in the operating system. (CVE-2018-0749) - A denial of service vulnerability exists in the way that Windows handles objects in memory. An attacker who successfully exploited the vulnerability could cause a target system to stop responding. Note that the denial of service condition would not allow an attacker to execute code or to elevate user privileges. However, the denial of service condition could prevent authorized users from using system resources. The security update addresses the vulnerability by correcting how Windows handles objects in memory. (CVE-2018-0753)
last seen	2020-06-01
modified	2020-06-02
plugin id	105551
published	2018-01-04
reporter	This script is Copyright (C) 2018 Tenable Network Security, Inc.
source	https://www.tenable.com/plugins/nessus/105551
title	KB4056893: Windows 10 LTSB January 2018 Security Update (Meltdown)(Spectre)

NASL family	Scientific Linux Local Security Checks
NASL id	SL_20180508_KERNEL_ON_SL6_X.NASL
description	Security Fix(es) : - hw: cpu: speculative execution permission faults handling (CVE-2017-5754) - Kernel: error in exception handling leads to DoS (CVE-2018-8897) - kernel: nfsd: Incorrect handling of long RPC replies (CVE-2017-7645) - kernel: Use-after-free vulnerability in DCCP socket (CVE-2017-8824) - kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166) - kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c (CVE-2017-18017) - kernel: Stack information leak in the EFS element (CVE-2017-1000410)
last seen	2020-03-18
modified	2018-05-09
plugin id	109643
published	2018-05-09
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109643
title	Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20180508) (Meltdown)

NASL family	AIX Local Security Checks
NASL id	AIX_IJ03033.NASL
description	Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis.
last seen	2020-06-01
modified	2020-06-02
plugin id	106313
published	2018-01-25
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106313
title	AIX 7.1 TL 5 : spectre_meltdown (IJ03033) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-1129.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 7.3 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5754 relies on the fact that, on impacted microprocessors, during speculative execution of instruction permission faults, exception generation triggered by a faulting access is suppressed until the retirement of the whole instruction block. In a combination with the fact that memory accesses may populate the cache even when the block is being dropped and never committed (executed), an unprivileged local attacker could use this flaw to read privileged (kernel space) memory by conducting targeted cache side-channel attacks. (CVE-2017-5754, Important, KVM for Power) Red Hat would like to thank Google Project Zero for reporting this issue. Bug Fix(es) : These updated kernel packages include also numerous bug fixes. Space precludes documenting all of these bug fixes in this advisory. See the bug fix descriptions in the related Knowledge Article: https://access.redhat.com/articles/3413511
last seen	2020-06-01
modified	2020-06-02
plugin id	109115
published	2018-04-18
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109115
title	RHEL 7 : kernel (RHSA-2018:1129) (Meltdown) (Spectre)

NASL family	Oracle Linux Local Security Checks
NASL id	ORACLELINUX_ELSA-2018-0007.NASL
description	From Red Hat Security Advisory 2018:0007 : An update for kernel is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update mitigations for x86-64 architecture are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105598
published	2018-01-05
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105598
title	Oracle Linux 7 : kernel (ELSA-2018-0007) (Meltdown) (Spectre)

NASL family	CentOS Local Security Checks
NASL id	CENTOS_RHSA-2018-0007.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update mitigations for x86-64 architecture are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105588
published	2018-01-05
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105588
title	CentOS 7 : kernel (CESA-2018:0007) (Meltdown) (Spectre)

NASL family	Firewalls
NASL id	PFSENSE_SA-18_03.NASL
description	According to its self-reported version number, the remote pfSense install is a version prior to 2.4.3 It is, therefore, affected by multiple vulnerabilities as stated in the referenced vendor advisories.
last seen	2020-06-01
modified	2020-06-02
plugin id	109038
published	2018-04-13
reporter	This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109038
title	pfSense < 2.4.3 Multiple Vulnerabilities (SA-18_01 / SA-18_02 / SA-18_03) (Meltdown) (Spectre)

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_NT_MS18_MAR_4088876.NASL
description	The remote Windows host is missing security update 4088879 or cumulative update 4088876. It is, therefore, affected by multiple vulnerabilities : - An vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) - An information disclosure vulnerability exists when Windows Remote Assistance incorrectly processes XML External Entities (XXE). An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0878) - An information disclosure vulnerability exists when Internet Explorer improperly handles objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0929) - A remote code execution vulnerability exists when Windows Shell does not properly validate file copy destinations. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. (CVE-2018-0883) - An elevation of privilege vulnerability exists in Windows when the Microsoft Video Control mishandles objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in system mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0881) - An information disclosure vulnerability exists when affected Microsoft browsers improperly handle objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2018-0927, CVE-2018-0932) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0889, CVE-2018-0935) - An elevation of privilege vulnerability exists when Internet Explorer fails a check, allowing sandbox escape. An attacker who successfully exploited the vulnerability could use the sandbox escape to elevate privileges on an affected system. This vulnerability by itself does not allow arbitrary code execution; however, it could allow arbitrary code to be run if the attacker uses it in combination with another vulnerability (such as a remote code execution vulnerability or another elevation of privilege vulnerability) that is capable of leveraging the elevated privileges when code execution is attempted. The update addresses the vulnerability by correcting how Internet Explorer handles zone and integrity settings. (CVE-2018-0942) - An information disclosure vulnerability exists when the Windows kernel improperly initializes objects in memory. (CVE-2018-0811, CVE-2018-0813, CVE-2018-0814) - A denial of service vulnerability exists when Microsoft Hyper-V Network Switch on a host server fails to properly validate input from a privileged user on a guest operating system. An attacker who successfully exploited the vulnerability could cause the host server to crash. (CVE-2018-0885) - A remote code execution vulnerability exists in the Credential Security Support Provider protocol (CredSSP). An attacker who successfully exploited this vulnerability could relay user credentials and use them to execute code on the target system. CredSSP is an authentication provider which processes authentication requests for other applications; any application which depends on CredSSP for authentication may be vulnerable to this type of attack. As an example of how an attacker would exploit this vulnerability against Remote Desktop Protocol, the attacker would need to run a specially crafted application and perform a man-in-the-middle attack against a Remote Desktop Protocol session. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. The security update addresses the vulnerability by correcting how Credential Security Support Provider protocol (CredSSP) validates requests during the authentication process. To be fully protected against this vulnerability users must enable Group Policy settings on their systems and update their Remote Desktop clients. The Group Policy settings are disabled by default to prevent connectivity problems and users must follow the instructions documented HERE to be fully protected. (CVE-2018-0886) - An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. (CVE-2018-0894, CVE-2018-0895, CVE-2018-0896, CVE-2018-0897, CVE-2018-0898, CVE-2018-0899, CVE-2018-0900, CVE-2018-0901, CVE-2018-0904) - An elevation of privilege vulnerability exists in the Windows Installer when the Windows Installer fails to properly sanitize input leading to an insecure library loading behavior. A locally authenticated attacker could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. The security update addresses the vulnerability by correcting the input sanitization error to preclude unintended elevation. (CVE-2018-0868) - An elevation of privilege vulnerability exists in the way that the Windows Graphics Device Interface (GDI) handles objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0816, CVE-2018-0817) - An information disclosure vulnerability exists when Windows Hyper-V on a host operating system fails to properly validate input from an authenticated user on a guest operating system. (CVE-2018-0888) - An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory in Microsoft browsers. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0891)
last seen	2020-06-01
modified	2020-06-02
plugin id	108291
published	2018-03-13
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108291
title	KB4088879: Windows 8.1 and Windows Server 2012 R2 March 2018 Security Update (Meltdown)(Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0601-1.NASL
description	This update for xen fixes several issues. These security issues were fixed : - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via side effects of speculative execution, aka
last seen	2020-06-01
modified	2020-06-02
plugin id	107140
published	2018-03-06
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/107140
title	SUSE SLES12 Security Update : xen (SUSE-SU-2018:0601-1) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0438-1.NASL
description	This update for xen fixes several issues. These security issues were fixed : - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via side effects of speculative execution, aka
last seen	2020-06-01
modified	2020-06-02
plugin id	106834
published	2018-02-15
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106834
title	SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2018:0438-1) (Meltdown) (Spectre)

NASL family	OracleVM Local Security Checks
NASL id	ORACLEVM_OVMSA-2018-0020.NASL
description	The remote OracleVM system is missing necessary patches to address critical security updates : - BUILDINFO: OVMF commit=173bf5c847e3ca8b42c11796ce048d8e2e916ff8 - BUILDINFO: xen commit=9ccc143584e12027a8db854d19ce8a120d22cfac - BUILDINFO: QEMU upstream commit=8bff6989bd0bafcc0ddf859c23ce6a2ff21a80ff - BUILDINFO: QEMU traditional commit=346fdd7edd73f8287d0d0a2bab9c67b71bc6b8ba - BUILDINFO: IPXE commit=9a93db3f0947484e30e753bbd61a10b17336e20e - BUILDINFO: SeaBIOS commit=7d9cbe613694924921ed1a6f8947d711c5832eee - gnttab: don
last seen	2020-06-01
modified	2020-06-02
plugin id	107129
published	2018-03-05
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/107129
title	OracleVM 3.4 : xen (OVMSA-2018-0020) (Meltdown) (Spectre)

NASL family	Ubuntu Local Security Checks
NASL id	UBUNTU_USN-3522-2.NASL
description	USN-3522-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5754). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	105725
published	2018-01-10
reporter	Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105725
title	Ubuntu 14.04 LTS : linux-lts-xenial, linux-aws vulnerability (USN-3522-2) (Meltdown)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-1177-1.NASL
description	This update for xen fixes several issues. These security issues were fixed : - CVE-2018-8897: Prevent mishandling of debug exceptions on x86 (XSA-260, bsc#1090820) - Handle HPET timers in IO-APIC mode correctly to prevent malicious or buggy HVM guests from causing a hypervisor crash or potentially privilege escalation/information leaks (XSA-261, bsc#1090822) - Prevent unbounded loop, induced by qemu allowing an attacker to permanently keep a physical CPU core busy (XSA-262, bsc#1090823) - CVE-2018-10472: x86 HVM guest OS users (in certain configurations) were able to read arbitrary dom0 files via QMP live insertion of a CDROM, in conjunction with specifying the target file as the backing file of a snapshot (bsc#1089152). - CVE-2018-10471: x86 PV guest OS users were able to cause a denial of service (out-of-bounds zero write and hypervisor crash) via unexpected INT 80 processing, because of an incorrect fix for CVE-2017-5754 (bsc#1089635). - CVE-2018-7550: The load_multiboot function allowed local guest OS users to execute arbitrary code on the host via a mh_load_end_addr value greater than mh_bss_end_addr, which triggers an out-of-bounds read or write memory access (bsc#1083292). The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	109672
published	2018-05-10
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109672
title	SUSE SLES12 Security Update : xen (SUSE-SU-2018:1177-1) (Meltdown)

NASL family	Scientific Linux Local Security Checks
NASL id	SL_20180125_KERNEL_ON_SL7_X.NASL
description	Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. * Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-03-18
modified	2018-01-25
plugin id	106340
published	2018-01-25
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106340
title	Scientific Linux Security Update : kernel on SL7.x x86_64 (20180125) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-1062.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * hw: cpu: speculative execution permission faults handling (CVE-2017-5754, Important, KVM for Power) * kernel: Buffer overflow in firewire driver via crafted incoming packets (CVE-2016-8633, Important) * kernel: Use-after-free vulnerability in DCCP socket (CVE-2017-8824, Important) * Kernel: kvm: nVMX: L2 guest could access hardware(L0) CR8 register (CVE-2017-12154, Important) * kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166, Important) * kernel: media: use-after-free in [tuner-xc2028] media driver (CVE-2016-7913, Moderate) * kernel: drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl() (CVE-2017-7294, Moderate) * kernel: Incorrect type conversion for size during dma allocation (CVE-2017-9725, Moderate) * kernel: memory leak when merging buffers in SCSI IO vectors (CVE-2017-12190, Moderate) * kernel: vfs: BUG in truncate_inode_pages_range() and fuse client (CVE-2017-15121, Moderate) * kernel: Use-after-free in userfaultfd_event_wait_completion function in userfaultfd.c (CVE-2017-15126, Moderate) * kernel: net: double-free and memory corruption in get_net_ns_by_id() (CVE-2017-15129, Moderate) * kernel: Use-after-free in snd_seq_ioctl_create_port() (CVE-2017-15265, Moderate) * kernel: Missing capabilities check in net/netfilter/nfnetlink_cthelper.c allows for unprivileged access to systemwide nfnl_cthelper_list structure (CVE-2017-17448, Moderate) * kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity (CVE-2017-17449, Moderate) * kernel: Unallocated memory access by malicious USB device via bNumInterfaces overflow (CVE-2017-17558, Moderate) * kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/ netfilter/xt_TCPMSS.c (CVE-2017-18017, Moderate) * kernel: Race condition in drivers/md/dm.c:dm_get_from_kobject() allows local users to cause a denial of service (CVE-2017-18203, Moderate) * kernel: kvm: Reachable BUG() on out-of-bounds guest IRQ (CVE-2017-1000252, Moderate) * Kernel: KVM: DoS via write flood to I/O port 0x80 (CVE-2017-1000407, Moderate) * kernel: Stack information leak in the EFS element (CVE-2017-1000410, Moderate) * kernel: Kernel address information leak in drivers/acpi/ sbshc.c:acpi_smbus_hc_add() function potentially allowing KASLR bypass (CVE-2018-5750, Moderate) * kernel: Race condition in sound system can lead to denial of service (CVE-2018-1000004, Moderate) * kernel: multiple Low security impact security issues (CVE-2016-3672, CVE-2017-14140, CVE-2017-15116, CVE-2017-15127, CVE-2018-6927, Low) Red Hat would like to thank Eyal Itkin for reporting CVE-2016-8633; Google Project Zero for reporting CVE-2017-5754; Mohamed Ghannam for reporting CVE-2017-8824; Jim Mattson (Google.com) for reporting CVE-2017-12154; Vitaly Mayatskih for reporting CVE-2017-12190; Andrea Arcangeli (Engineering) for reporting CVE-2017-15126; Kirill Tkhai for reporting CVE-2017-15129; Jan H. Schonherr (Amazon) for reporting CVE-2017-1000252; and Armis Labs for reporting CVE-2017-1000410. The CVE-2017-15121 issue was discovered by Miklos Szeredi (Red Hat) and the CVE-2017-15116 issue was discovered by ChunYu Wang (Red Hat). For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.5 Release Notes linked from the References section.
last seen	2020-06-01
modified	2020-06-02
plugin id	108997
published	2018-04-11
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108997
title	RHEL 7 : kernel (RHSA-2018:1062)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0046.NASL
description	An update for rhev-hypervisor7 is now available for RHEV 3.X Hypervisor and Agents for Red Hat Enterprise Linux 6 and RHEV 3.X Hypervisor and Agents for Red Hat Enterprise Linux 7 ELS. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The rhev-hypervisor7 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes everything necessary to run and manage virtual machines: A subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105677
published	2018-01-09
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105677
title	RHEL 6 / 7 : rhev-hypervisor7 (RHSA-2018:0046) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0114-1.NASL
description	The SUSE Linux Enterprise 12 SP1 LTSS kernel was updated to receive various security and bugfixes. This update is only provided as a fix update for IBM Z platform. - CVE-2017-5753 /
last seen	2020-06-01
modified	2020-06-02
plugin id	106094
published	2018-01-17
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106094
title	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:0114-1) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0020.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6.2 Advanced Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update mitigations for x86-64 architecture are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105562
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105562
title	RHEL 6 : kernel (RHSA-2018:0020) (Meltdown) (Spectre)

NASL family	Oracle Linux Local Security Checks
NASL id	ORACLELINUX_ELSA-2018-0512.NASL
description	From Red Hat Security Advisory 2018:0512 : An update for kernel is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * hw: cpu: speculative execution branch target injection (s390-only) (CVE-2017-5715, Important) * hw: cpu: speculative execution bounds-check bypass (s390 and powerpc) (CVE-2017-5753, Important) * hw: cpu: speculative execution permission faults handling (powerpc-only) (CVE-2017-5754) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fixes : * If a fibre channel (FC) switch was powered down and then powered on again, the SCSI device driver stopped permanently the SCSI device
last seen	2020-06-01
modified	2020-06-02
plugin id	108358
published	2018-03-15
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108358
title	Oracle Linux 6 : kernel (ELSA-2018-0512) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0292.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 5 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update mitigations for IBM zSeries (S390) and x86-64 architectures are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	107058
published	2018-02-28
reporter	This script is Copyright (C) 2018-2019 Tenable Network Security, Inc.
source	https://www.tenable.com/plugins/nessus/107058
title	RHEL 5 : kernel (RHSA-2018:0292) (Meltdown) (Spectre)

NASL family	OracleVM Local Security Checks
NASL id	ORACLEVM_OVMSA-2018-0021.NASL
description	The remote OracleVM system is missing necessary patches to address critical security updates : - BUILDINFO: xen commit=b2a6db11ced11291a472bc1bda20ce329eda4d66 - BUILDINFO: QEMU upstream commit=8bff6989bd0bafcc0ddf859c23ce6a2ff21a80ff - BUILDINFO: QEMU traditional commit=346fdd7edd73f8287d0d0a2bab9c67b71bc6b8ba - BUILDINFO: IPXE commit=9a93db3f0947484e30e753bbd61a10b17336e20e - BUILDINFO: SeaBIOS commit=7d9cbe613694924921ed1a6f8947d711c5832eee - gnttab: don
last seen	2020-06-01
modified	2020-06-02
plugin id	107130
published	2018-03-05
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/107130
title	OracleVM 3.4 : xen (OVMSA-2018-0021) (Meltdown) (Spectre)

NASL family	Slackware Local Security Checks
NASL id	SLACKWARE_SSA_2018-016-01.NASL
description	New kernel packages are available for Slackware 14.0 and 14.2 to fix security issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	106051
published	2018-01-16
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106051
title	Slackware 14.0 / 14.2 / current : kernel (SSA:2018-016-01) (Meltdown) (Spectre)

NASL family	Amazon Linux Local Security Checks
NASL id	ALA_ALAS-2018-939.NASL
description	An updated kernel release for Amazon Linux has been made available which prevents speculative execution of indirect branches within the kernel. This release incorporates latest stable open source Linux security improvements to address CVE-2017-5715 within the kernel and builds upon previously incorporated Kernel Page Table Isolation (KPTI) that addressed CVE-2017-5754 . Customers must upgrade to the latest Amazon Linux kernel or AMI to effectively mitigate the impact of both CVE-2017-5754 and CVE-2017-5715 on MMU privilege separation (kernel mode vs. user mode) within their instance. Customers with existing Amazon Linux AMI instances should run the following command to ensure they receive the updated package :
last seen	2020-06-01
modified	2020-06-02
plugin id	105517
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105517
title	Amazon Linux AMI : kernel (ALAS-2018-939) (Meltdown) (Spectre)

NASL family	Ubuntu Local Security Checks
NASL id	UBUNTU_USN-3522-3.NASL
description	USN-3522-1 fixed a vulnerability in the Linux kernel to address Meltdown (CVE-2017-5754). Unfortunately, that update introduced a regression where a few systems failed to boot successfully. This update fixes the problem. We apologize for the inconvenience. Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	105745
published	2018-01-11
reporter	Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105745
title	Ubuntu 16.04 LTS : linux regression (USN-3522-3) (Meltdown)

NASL family	Virtuozzo Local Security Checks
NASL id	VIRTUOZZO_VZA-2018-029.NASL
description	According to the versions of the parallels-server-bm-release / vzkernel / etc packages installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities : - An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5754 relies on the fact that, on impacted microprocessors, during speculative execution of instruction permission faults, exception generation triggered by a faulting access is suppressed until the retirement of the whole instruction block. In a combination with the fact that memory accesses may populate the cache even when the block is being dropped and never committed (executed), an unprivileged local attacker could use this flaw to read privileged (kernel space) memory by conducting targeted cache side-channel attacks. NOTE: This update fixes the 32-bit compatibility layer on x86-64 processors, i.e. when 32-bit containers are executed on 64-bit processors. - A bug in the 32-bit compatibility layer of the ioctl handling code of the v4l2 video driver in the Linux kernel has been found. A memory protection mechanism ensuring that user-provided buffers always point to a userspace memory were disabled, allowing destination address to be in a kernel space. This flaw could be exploited by an attacker to overwrite a kernel memory from an unprivileged userspace process, leading to privilege escalation. - The KEYS subsystem in the Linux kernel omitted an access-control check when writing a key to the current task
last seen	2020-06-01
modified	2020-06-02
plugin id	109801
published	2018-05-15
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109801
title	Virtuozzo 6 : parallels-server-bm-release / vzkernel / etc (VZA-2018-029)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0012-1.NASL
description	The SUSE Linux Enterprise 12 SP2 kernel was updated to receive various security and bugfixes. This update adds mitigations for various side channel attacks against modern CPUs that could disclose content of otherwise unreadable memory (bnc#1068032). - CVE-2017-5753 /
last seen	2020-06-01
modified	2020-06-02
plugin id	105576
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105576
title	SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:0012-1) (Meltdown) (Spectre)

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_NT_MS18_MAR_4088875.NASL
description	The remote Windows host is missing security update 4088878 or cumulative update 4088875. It is, therefore, affected by multiple vulnerabilities : - An vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis. Note: this patch applies to only 32-bit Windows 7 systems. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) - An information disclosure vulnerability exists when Windows Remote Assistance incorrectly processes XML External Entities (XXE). An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0878) - An information disclosure vulnerability exists when Internet Explorer improperly handles objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0929) - A remote code execution vulnerability exists when Windows Shell does not properly validate file copy destinations. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. (CVE-2018-0883) - An elevation of privilege vulnerability exists in Windows when the Microsoft Video Control mishandles objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in system mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0881) - An information disclosure vulnerability exists when affected Microsoft browsers improperly handle objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2018-0927, CVE-2018-0932) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0889, CVE-2018-0935) - An elevation of privilege vulnerability exists when Internet Explorer fails a check, allowing sandbox escape. An attacker who successfully exploited the vulnerability could use the sandbox escape to elevate privileges on an affected system. This vulnerability by itself does not allow arbitrary code execution; however, it could allow arbitrary code to be run if the attacker uses it in combination with another vulnerability (such as a remote code execution vulnerability or another elevation of privilege vulnerability) that is capable of leveraging the elevated privileges when code execution is attempted. The update addresses the vulnerability by correcting how Internet Explorer handles zone and integrity settings. (CVE-2018-0942) - An information disclosure vulnerability exists when the Windows kernel improperly initializes objects in memory. (CVE-2018-0811, CVE-2018-0813, CVE-2018-0814) - A denial of service vulnerability exists when Microsoft Hyper-V Network Switch on a host server fails to properly validate input from a privileged user on a guest operating system. An attacker who successfully exploited the vulnerability could cause the host server to crash. (CVE-2018-0885) - An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. (CVE-2018-0894, CVE-2018-0895, CVE-2018-0896, CVE-2018-0897, CVE-2018-0898, CVE-2018-0899, CVE-2018-0900, CVE-2018-0901, CVE-2018-0904) - An elevation of privilege vulnerability exists in the Windows Installer when the Windows Installer fails to properly sanitize input leading to an insecure library loading behavior. A locally authenticated attacker could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. The security update addresses the vulnerability by correcting the input sanitization error to preclude unintended elevation. (CVE-2018-0868) - A remote code execution vulnerability exists in the Credential Security Support Provider protocol (CredSSP). An attacker who successfully exploited this vulnerability could relay user credentials and use them to execute code on the target system. CredSSP is an authentication provider which processes authentication requests for other applications; any application which depends on CredSSP for authentication may be vulnerable to this type of attack. As an example of how an attacker would exploit this vulnerability against Remote Desktop Protocol, the attacker would need to run a specially crafted application and perform a man-in-the-middle attack against a Remote Desktop Protocol session. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. The security update addresses the vulnerability by correcting how Credential Security Support Provider protocol (CredSSP) validates requests during the authentication process. To be fully protected against this vulnerability users must enable Group Policy settings on their systems and update their Remote Desktop clients. The Group Policy settings are disabled by default to prevent connectivity problems and users must follow the instructions documented HERE to be fully protected. (CVE-2018-0886) - An elevation of privilege vulnerability exists in the way that the Windows Graphics Device Interface (GDI) handles objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0815, CVE-2018-0816, CVE-2018-0817) - An information disclosure vulnerability exists when Windows Hyper-V on a host operating system fails to properly validate input from an authenticated user on a guest operating system. (CVE-2018-0888) - An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory in Microsoft browsers. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2018-0891)
last seen	2020-06-01
modified	2020-06-02
plugin id	108290
published	2018-03-13
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108290
title	KB4088878: Windows 7 and Windows Server 2008 R2 March 2018 Security Update (Meltdown)(Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-1350.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6.5 Advanced Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. [Updated 10 May 2018] The references to CVE-2017-5754 x86 (32-bit) mitigation were removed because Red Hat Enterprise Linux 6.5 Advanced Update Support does not include support for x86 32-bit architecture. Consequently, impact rating of this erratum was changed from Important to Moderate. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * Kernel: error in exception handling leads to DoS (CVE-2018-8897) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting this issue. Bug Fix(es) : * The kernel build requirements have been updated to the GNU Compiler Collection (GCC) compiler version that has the support for Retpolines. The Retpolines mechanism is a software construct that leverages specific knowledge of the underlying hardware to mitigate the branch target injection, also known as Spectre variant 2 vulnerability described in CVE-2017-5715. (BZ#1554256)
last seen	2020-06-01
modified	2020-06-02
plugin id	109640
published	2018-05-09
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109640
title	RHEL 6 : kernel (RHSA-2018:1350)

NASL family	Ubuntu Local Security Checks
NASL id	UBUNTU_USN-3597-2.NASL
description	USN-3597-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. USNS 3541-2 and 3523-2 provided mitigations for Spectre and Meltdown (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) for the i386, amd64, and ppc64el architectures for Ubuntu 16.04 LTS. This update provides the corresponding mitigations for the arm64 architecture. Original advisory details : Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5754) Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5715, CVE-2017-5753). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	108372
published	2018-03-15
reporter	Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108372
title	Ubuntu 16.04 LTS : linux-hwe vulnerabilities (USN-3597-2) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0131-1.NASL
description	The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes. This update is only provided as a fix update for IBM Z platform. - CVE-2017-5753 /
last seen	2020-06-01
modified	2020-06-02
plugin id	106185
published	2018-01-19
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106185
title	SUSE SLES11 Security Update : kernel (SUSE-SU-2018:0131-1) (Meltdown) (Spectre)

NASL family	Virtuozzo Local Security Checks
NASL id	VIRTUOZZO_VZA-2018-003.NASL
description	According to the versions of the crit / criu / criu-devel / ksm-vz / libcompel / etc packages installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities : - CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105657
published	2018-01-09
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105657
title	Virtuozzo 7 : crit / criu / criu-devel / ksm-vz / libcompel / etc (VZA-2018-003)

NASL family	Debian Local Security Checks
NASL id	DEBIAN_DLA-1232.NASL
description	Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. CVE-2017-5754 Multiple researchers have discovered a vulnerability in Intel processors, enabling an attacker controlling an unprivileged process to read memory from arbitrary addresses, including from the kernel and all other processes running on the system. This specific attack has been named Meltdown and is addressed in the Linux kernel for the Intel x86-64 architecture by a patch set named Kernel Page Table Isolation, enforcing a near complete separation of the kernel and userspace address maps and preventing the attack. This solution might have a performance impact, and can be disabled at boot time by passing `pti=off
last seen	2020-03-17
modified	2018-01-08
plugin id	105622
published	2018-01-08
reporter	This script is Copyright (C) 2018-2020 Tenable Network Security, Inc.
source	https://www.tenable.com/plugins/nessus/105622
title	Debian DLA-1232-1 : linux security update (Meltdown)

NASL family	SuSE Local Security Checks
NASL id	OPENSUSE-2018-454.NASL
description	This update for xen to version 4.9.2 fixes several issues. This feature was added : - Added script, udev rule and systemd service to watch for vcpu online/offline events in a HVM domU. They are triggered via
last seen	2020-06-05
modified	2018-05-14
plugin id	109751
published	2018-05-14
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109751
title	openSUSE Security Update : xen (openSUSE-2018-454) (Meltdown)

NASL family	PhotonOS Local Security Checks
NASL id	PHOTONOS_PHSA-2018-2_0-0010_LINUX.NASL
description	An update of the linux package has been released.
last seen	2020-06-01
modified	2020-06-02
plugin id	121906
published	2019-02-07
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/121906
title	Photon OS 2.0: Linux PHSA-2018-2.0-0010

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0909-1.NASL
description	This update for xen fixes the following issues: Update to Xen 4.7.5 bug fix only release (bsc#1027519) Security issues fixed : - CVE-2018-7540: Fixed DoS via non-preemptable L3/L4 pagetable freeing (XSA-252) (bsc#1080635) - CVE-2018-7541: A grant table v2 -> v1 transition may crash Xen (XSA-255) (bsc#1080662) - CVE-2017-5753,CVE-2017-5715,CVE-2017-5754 Fixed information leaks via side effects of speculative execution (XSA-254). Includes Spectre v2 mitigation. (bsc#1074562) - Preserve xen-syms from xen-dbg.gz to allow processing vmcores with crash(1) (bsc#1087251) - Xen HVM: Fixed unchecked MSR access error (bsc#1072834) - Add script, udev rule and systemd service to watch for vcpu online/offline events in a HVM domU They are triggered via xl vcpu-set domU N (fate#324965) - Make sure tools and tools-domU require libs from the very same build Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	109001
published	2018-04-11
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109001
title	SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2018:0909-1) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	OPENSUSE-2018-3.NASL
description	The openSUSE Leap 42.2 kernel was updated to 4.4.104 to receive various security and bugfixes. This update adds mitigations for various side channel attacks against modern CPUs that could disclose content of otherwise unreadable memory (bnc#1068032). - CVE-2017-5753 /
last seen	2020-06-05
modified	2018-01-08
plugin id	105636
published	2018-01-08
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105636
title	openSUSE Security Update : the Linux Kernel (openSUSE-2018-3) (Meltdown) (Spectre)

NASL family	Ubuntu Local Security Checks
NASL id	UBUNTU_USN-3523-1.NASL
description	Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5754) Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel did not properly check the relationship between pointer values and the BPF stack. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-17863) Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel improperly performed sign extension in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16995) Alexei Starovoitov discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel contained a branch-pruning logic issue around unreachable code. A local attacker could use this to cause a denial of service. (CVE-2017-17862) Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel mishandled pointer data values in some situations. A local attacker could use this to to expose sensitive information (kernel memory). (CVE-2017-17864). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	105726
published	2018-01-10
reporter	Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105726
title	Ubuntu 17.10 : linux vulnerabilities (USN-3523-1) (Meltdown)

NASL family	AIX Local Security Checks
NASL id	AIX_IJ03036.NASL
description	Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis.
last seen	2020-06-01
modified	2020-06-02
plugin id	106316
published	2018-01-25
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106316
title	AIX 7.2 TL 2 : spectre_meltdown (IJ03036) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0031-1.NASL
description	The SUSE Linux Enterprise 12 SP1 LTSS kernel was updated to receive various security and bugfixes. This update adds mitigations for various side channel attacks against modern CPUs that could disclose content of otherwise unreadable memory (bnc#1068032). - CVE-2017-5753 /
last seen	2020-06-01
modified	2020-06-02
plugin id	105647
published	2018-01-08
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105647
title	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:0031-1) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-1202-1.NASL
description	This update for xen fixes several issues. These security issues were fixed : - CVE-2018-8897: Prevent mishandling of debug exceptions on x86 (XSA-260, bsc#1090820) - Handle HPET timers in IO-APIC mode correctly to prevent malicious or buggy HVM guests from causing a hypervisor crash or potentially privilege escalation/information leaks (XSA-261, bsc#1090822) - Prevent unbounded loop, induced by qemu allowing an attacker to permanently keep a physical CPU core busy (XSA-262, bsc#1090823) - CVE-2018-10472: x86 HVM guest OS users (in certain configurations) were able to read arbitrary dom0 files via QMP live insertion of a CDROM, in conjunction with specifying the target file as the backing file of a snapshot (bsc#1089152). - CVE-2018-10471: x86 PV guest OS users were able to cause a denial of service (out-of-bounds zero write and hypervisor crash) via unexpected INT 80 processing, because of an incorrect fix for CVE-2017-5754 (bsc#1089635). - CVE-2018-7550: The load_multiboot function allowed local guest OS users to execute arbitrary code on the host via a mh_load_end_addr value greater than mh_bss_end_addr, which triggers an out-of-bounds read or write memory access (bsc#1083292). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	109721
published	2018-05-11
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109721
title	SUSE SLES12 Security Update : xen (SUSE-SU-2018:1202-1) (Meltdown)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-1184-1.NASL
description	This update for xen to version 4.9.2 fixes several issues. This feature was added : - Added script, udev rule and systemd service to watch for vcpu online/offline events in a HVM domU. They are triggered via
last seen	2020-06-01
modified	2020-06-02
plugin id	109677
published	2018-05-10
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109677
title	SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2018:1184-1) (Meltdown)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0018.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6.4 Advanced Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update mitigations for x86-64 architecture are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105561
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105561
title	RHEL 6 : kernel (RHSA-2018:0018) (Meltdown) (Spectre)

NASL family	Misc.
NASL id	XEN_SERVER_XSA-254.NASL
description	According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by multiple vulnerabilities. Note that Nessus has checked the changeset versions based on the xen.git change log. Nessus did not check guest hardware configurations or if patches were applied manually to the source code before a recompile and reinstall.
last seen	2020-06-01
modified	2020-06-02
plugin id	106902
published	2018-02-20
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106902
title	Xen Multiple Vulnerabilities (Spectre) (Meltdown) (XSA-254)

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_NT_MS18_FEB_4074596.NASL
description	The remote Windows host is missing security update 4074596. It is, therefore, affected by multiple vulnerabilities : - An vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0866) - An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2018-0757, CVE-2018-0829, CVE-2018-0830) - An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. (CVE-2018-0742, CVE-2018-0756, CVE-2018-0820) - An information disclosure vulnerability exists when VBScript improperly discloses the contents of its memory, which could provide an attacker with information to further compromise the users computer or data. (CVE-2018-0847) - A remote code execution vulnerability exists in StructuredQuery when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0825) - An elevation of privilege vulnerability exists when NTFS improperly handles objects. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2018-0822) - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0834, CVE-2018-0835, CVE-2018-0837, CVE-2018-0838, CVE-2018-0857, CVE-2018-0859, CVE-2018-0860) - An elevation of privilege vulnerability exists when AppContainer improperly implements constrained impersonation. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2018-0821) - A remote code execution vulnerability exists when Windows improperly handles objects in memory. An attacker who successfully exploited these vulnerabilities could take control of an affected system. (CVE-2018-0842) - A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0840) - An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. (CVE-2018-0832) - An elevation of privilege vulnerability exists when the Windows Common Log File System (CLFS) driver improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2018-0844, CVE-2018-0846)
last seen	2020-06-01
modified	2020-06-02
plugin id	106801
published	2018-02-13
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106801
title	KB4074596: Windows 10 February 2018 Security Update (Meltdown)(Spectre)

NASL family	Misc.
NASL id	NVIDIA_UNIX_CVE_2017_5753.NASL
description	The NVIDIA GPU display driver software on the remote host is missing a security update. It is, therefore, affected by multiple vulnerabilities.
last seen	2020-06-01
modified	2020-06-02
plugin id	105776
published	2018-01-12
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105776
title	NVIDIA Linux GPU Display Driver 384.x < 384.111 / 390.x < 390.12 Multiple Vulnerabilities (Meltdown)(Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0472-1.NASL
description	This update for xen fixes several issues. These security issues were fixed : - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via side effects of speculative execution, aka
last seen	2020-06-01
modified	2020-06-02
plugin id	106901
published	2018-02-20
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106901
title	SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2018:0472-1) (Meltdown) (Spectre)

NASL family	Debian Local Security Checks
NASL id	DEBIAN_DSA-4082.NASL
description	Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. - CVE-2017-5754 Multiple researchers have discovered a vulnerability in Intel processors, enabling an attacker controlling an unprivileged process to read memory from arbitrary addresses, including from the kernel and all other processes running on the system. This specific attack has been named Meltdown and is addressed in the Linux kernel for the Intel x86-64 architecture by a patch set named Kernel Page Table Isolation, enforcing a near complete separation of the kernel and userspace address maps and preventing the attack. This solution might have a performance impact, and can be disabled at boot time by passing pti=off to the kernel command line. - CVE-2017-8824 Mohamed Ghannam discovered that the DCCP implementation did not correctly manage resources when a socket is disconnected and reconnected, potentially leading to a use-after-free. A local user could use this for denial of service (crash or data corruption) or possibly for privilege escalation. On systems that do not already have the dccp module loaded, this can be mitigated by disabling it:echo >> /etc/modprobe.d/disable-dccp.conf install dccp false - CVE-2017-15868 Al Viro found that the Bluebooth Network Encapsulation Protocol (BNEP) implementation did not validate the type of the second socket passed to the BNEPCONNADD ioctl(), which could lead to memory corruption. A local user with the CAP_NET_ADMIN capability can use this for denial of service (crash or data corruption) or possibly for privilege escalation. - CVE-2017-16538 Andrey Konovalov reported that the dvb-usb-lmedm04 media driver did not correctly handle some error conditions during initialisation. A physically present user with a specially designed USB device can use this to cause a denial of service (crash). - CVE-2017-16939 Mohamed Ghannam reported (through Beyond Security
last seen	2020-06-01
modified	2020-06-02
plugin id	105704
published	2018-01-10
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105704
title	Debian DSA-4082-1 : linux - security update (Meltdown)

NASL family	SuSE Local Security Checks
NASL id	OPENSUSE-2018-118.NASL
description	This update for webkit2gtk3 fixes the following issues : Update to version 2.18.5 : + Disable SharedArrayBuffers from Web API. + Reduce the precision of
last seen	2020-06-05
modified	2018-02-01
plugin id	106549
published	2018-02-01
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106549
title	openSUSE Security Update : webkit2gtk3 (openSUSE-2018-118) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0654.NASL
description	An update for kernel-alt is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel-alt packages provide the Linux kernel version 4.x. The following packages have been upgraded to a later upstream version: kernel-alt (4.14.0). (BZ#1492717) Security Fix(es) : * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	108942
published	2018-04-10
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108942
title	RHEL 7 : kernel-alt (RHSA-2018:0654)

NASL family	NewStart CGSL Local Security Checks
NASL id	NEWSTART_CGSL_NS-SA-2019-0049_KERNEL-RT.NASL
description	The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has kernel-rt packages installed that are affected by multiple vulnerabilities: - A buffer overflow vulnerability due to a lack of input filtering of incoming fragmented datagrams was found in the IP-over-1394 driver [firewire-net] in a fragment handling code in the Linux kernel. The vulnerability exists since firewire supported IPv4, i.e. since version 2.6.31 (year 2009) till version v4.9-rc4. A maliciously formed fragment with a respectively large datagram offset would cause a memcpy() past the datagram buffer, which would cause a system panic or possible arbitrary code execution. The flaw requires [firewire-net] module to be loaded and is remotely exploitable from connected firewire devices, but not over a local network. (CVE-2016-8633) - The Linux Kernel imposes a size restriction on the arguments and environmental strings passed through RLIMIT_STACK/RLIMIT_INFINITY, but does not take the argument and environment pointers into account, which allows attackers to bypass this limitation. (CVE-2017-1000365) - A bug in the 32-bit compatibility layer of the ioctl handling code of the v4l2 video driver in the Linux kernel has been found. A memory protection mechanism ensuring that user-provided buffers always point to a userspace memory were disabled, allowing destination address to be in a kernel space. This flaw could be exploited by an attacker to overwrite a kernel memory from an unprivileged userspace process, leading to privilege escalation. (CVE-2017-13166) - The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel doesn
last seen	2020-06-01
modified	2020-06-02
plugin id	127233
published	2019-08-12
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/127233
title	NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel-rt Multiple Vulnerabilities (NS-SA-2019-0049)

NASL family	CentOS Local Security Checks
NASL id	CENTOS_RHSA-2018-0008.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. [Updated 23rd January 2019] The text has been updated to correct the list of architectures addressed by the CVE-2017-5753 mitigation. No changes have been made to the packages. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update, mitigations for x86 (CVE-2017-5753) and x86-64 (CVE-2017-5753, CVE-2017-5715, and CVE-2017-5754) architectures are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105589
published	2018-01-05
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105589
title	CentOS 6 : kernel (CESA-2018:0008) (Meltdown) (Spectre)

NASL family	OracleVM Local Security Checks
NASL id	ORACLEVM_OVMSA-2018-0005.NASL
description	The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0005 for details.
last seen	2020-06-01
modified	2020-06-02
plugin id	105717
published	2018-01-10
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105717
title	OracleVM 3.4 : xen (OVMSA-2018-0005) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-1216-1.NASL
description	This update for xen fixes several issues. These security issues were fixed : - CVE-2018-8897: Prevent mishandling of debug exceptions on x86 (XSA-260, bsc#1090820) - Handle HPET timers in IO-APIC mode correctly to prevent malicious or buggy HVM guests from causing a hypervisor crash or potentially privilege escalation/information leaks (XSA-261, bsc#1090822) - Prevent unbounded loop, induced by qemu allowing an attacker to permanently keep a physical CPU core busy (XSA-262, bsc#1090823) - CVE-2018-10472: x86 HVM guest OS users (in certain configurations) were able to read arbitrary dom0 files via QMP live insertion of a CDROM, in conjunction with specifying the target file as the backing file of a snapshot (bsc#1089152). - CVE-2018-10471: x86 PV guest OS users were able to cause a denial of service (out-of-bounds zero write and hypervisor crash) via unexpected INT 80 processing, because of an incorrect fix for CVE-2017-5754 (bsc#1089635). The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	109756
published	2018-05-14
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109756
title	SUSE SLES12 Security Update : xen (SUSE-SU-2018:1216-1) (Meltdown)

NASL family	Gentoo Local Security Checks
NASL id	GENTOO_GLSA-201810-06.NASL
description	The remote host is affected by the vulnerability described in GLSA-201810-06 (Xen: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Xen. Please review the referenced CVE identifiers for details. Impact : A local attacker could cause a Denial of Service condition or disclose sensitive information. Workaround : There is no known workaround at this time.
last seen	2020-06-01
modified	2020-06-02
plugin id	118506
published	2018-10-31
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/118506
title	GLSA-201810-06 : Xen: Multiple vulnerabilities (Foreshadow) (Meltdown) (Spectre)

NASL family	FreeBSD Local Security Checks
NASL id	FREEBSD_PKG_74DAA370279711E895ECA4BADB2F4699.NASL
description	A number of issues relating to speculative execution were found last year and publicly announced January 3rd. Two of these, known as Meltdown and Spectre V2, are addressed here. CVE-2017-5754 (Meltdown) - ------------------------ This issue relies on an affected CPU speculatively executing instructions beyond a faulting instruction. When this happens, changes to architectural state are not committed, but observable changes may be left in micro- architectural state (for example, cache). This may be used to infer privileged data. CVE-2017-5715 (Spectre V2) - -------------------------- Spectre V2 uses branch target injection to speculatively execute kernel code at an address under the control of an attacker. Impact : An attacker may be able to read secret data from the kernel or from a process when executing untrusted code (for example, in a web browser).
last seen	2020-06-01
modified	2020-06-02
plugin id	108352
published	2018-03-15
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/108352
title	FreeBSD : FreeBSD -- Speculative Execution Vulnerabilities (74daa370-2797-11e8-95ec-a4badb2f4699) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	OPENSUSE-2018-2.NASL
description	The openSUSE Leap 42.3 kernel was updated to 4.4.104 to receive various security and bugfixes. This update adds mitigations for various side channel attacks against modern CPUs that could disclose content of otherwise unreadable memory (bnc#1068032). - CVE-2017-5753 /
last seen	2020-06-05
modified	2018-01-05
plugin id	105597
published	2018-01-05
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105597
title	openSUSE Security Update : the Linux Kernel (openSUSE-2018-2) (Meltdown) (Spectre)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0010-1.NASL
description	The SUSE Linux Enterprise 12 SP3 kernel was updated to receive various security and bugfixes. This update adds mitigations for various side channel attacks against modern CPUs that could disclose content of otherwise unreadable memory (bnc#1068032). - CVE-2017-5753 /
last seen	2020-06-01
modified	2020-06-02
plugin id	105574
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105574
title	SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:0010-1) (Meltdown) (Spectre)

NASL family	Huawei Local Security Checks
NASL id	EULEROS_SA-2019-1539.NASL
description	According to the versions of the kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions past bounds check. The flaw relies on the presence of a precisely-defined instruction sequence in the privileged code and the fact that memory writes occur to an address which depends on the untrusted value. Such writes cause an update into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	124992
published	2019-05-14
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/124992
title	EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1539)

NASL family	Ubuntu Local Security Checks
NASL id	UBUNTU_USN-3583-1.NASL
description	It was discovered that an out-of-bounds write vulnerability existed in the Flash-Friendly File System (f2fs) in the Linux kernel. An attacker could construct a malicious file system that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-0750) It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-0861) It was discovered that the KVM implementation in the Linux kernel allowed passthrough of the diagnostic I/O port 0x80. An attacker in a guest VM could use this to cause a denial of service (system crash) in the host OS. (CVE-2017-1000407) Bo Zhang discovered that the netlink wireless configuration interface in the Linux kernel did not properly validate attributes when handling certain requests. A local attacker with the CAP_NET_ADMIN could use this to cause a denial of service (system crash). (CVE-2017-12153) Vitaly Mayatskikh discovered that the SCSI subsystem in the Linux kernel did not properly track reference counts when merging buffers. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2017-12190) It was discovered that the key management subsystem in the Linux kernel did not properly restrict key reads on negatively instantiated keys. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-12192) It was discovered that an integer overflow existed in the sysfs interface for the QLogic 24xx+ series SCSI driver in the Linux kernel. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2017-14051) Otto Ebeling discovered that the memory manager in the Linux kernel did not properly check the effective UID in some situations. A local attacker could use this to expose sensitive information. (CVE-2017-14140) It was discovered that the ATI Radeon framebuffer driver in the Linux kernel did not properly initialize a data structure returned to user space. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2017-14156) ChunYu Wang discovered that the iSCSI transport implementation in the Linux kernel did not properly validate data structures. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-14489) James Patrick-Evans discovered a race condition in the LEGO USB Infrared Tower driver in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15102) ChunYu Wang discovered that a use-after-free vulnerability existed in the SCTP protocol implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code, (CVE-2017-15115) It was discovered that the key management subsystem in the Linux kernel did not properly handle NULL payloads with non-zero length values. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-15274) It was discovered that the Bluebooth Network Encapsulation Protocol (BNEP) implementation in the Linux kernel did not validate the type of socket passed in the BNEPCONNADD ioctl(). A local attacker with the CAP_NET_ADMIN privilege could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15868) Andrey Konovalov discovered a use-after-free vulnerability in the USB serial console driver in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16525) It was discovered that the netfilter passive OS fingerprinting (xt_osf) module did not properly perform access control checks. A local attacker could improperly modify the systemwide OS fingerprint list. (CVE-2017-17450) It was discovered that the HMAC implementation did not validate the state of the underlying cryptographic hash algorithm. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-17806) Denys Fedoryshchenko discovered a use-after-free vulnerability in the netfilter xt_TCPMSS filter of the Linux kernel. A remote attacker could use this to cause a denial of service (system crash). (CVE-2017-18017) Gareth Evans discovered that the shm IPC subsystem in the Linux kernel did not properly restrict mapping page zero. A local privileged attacker could use this to execute arbitrary code. (CVE-2017-5669) It was discovered that an integer overflow vulnerability existing in the IPv6 implementation in the Linux kernel. A local attacker could use this to cause a denial of service (infinite loop). (CVE-2017-7542) Tommi Rantala and Brad Spengler discovered that the memory manager in the Linux kernel did not properly enforce the CONFIG_STRICT_DEVMEM protection mechanism. A local attacker with access to /dev/mem could use this to expose sensitive information or possibly execute arbitrary code. (CVE-2017-7889) Mohamed Ghannam discovered a use-after-free vulnerability in the DCCP protocol implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-8824) Mohamed Ghannam discovered a NULL pointer dereference in the RDS (Reliable Datagram Sockets) protocol implementation of the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-5333) Fan Long Fei discovered that a race condition existed in loop block device implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-5344) USN-3524-1 mitigated CVE-2017-5754 (Meltdown) for the amd64 architecture in Ubuntu 14.04 LTS. This update provides the corresponding mitigations for the ppc64el architecture. Original advisory details : Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5754). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	107003
published	2018-02-26
reporter	Ubuntu Security Notice (C) 2018-2020 Canonical, Inc. / NASL script (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/107003
title	Ubuntu 14.04 LTS : linux vulnerabilities (USN-3583-1) (Meltdown)

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_NT_MS18_JAN_4056898.NASL
description	The remote Windows host is missing security update 4056898 or cumulative update 4056895. It is, therefore, affected by multiple vulnerabilities : - An vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis. (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) - An elevation of privilege vulnerability exists in Windows Adobe Type Manager Font Driver (ATMFD.dll) when it fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code and take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0788) - An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0744) - An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. (CVE-2018-0746, CVE-2018-0747) - An information disclosure vulnerability exists in Windows Adobe Type Manager Font Driver (ATMFD.dll) when it fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could potentially read data that was not intended to be disclosed. Note that this vulnerability would not allow an attacker to execute code or to elevate their user rights directly, but it could be used to obtain information that could be used to try to further compromise the affected system. (CVE-2018-0754) - A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2018-0762, CVE-2018-0772) - An elevation of privilege vulnerability exists in the way that the Windows Kernel API enforces permissions. An attacker who successfully exploited the vulnerability could impersonate processes, interject cross-process communication, or interrupt system functionality. (CVE-2018-0748, CVE-2018-0751, CVE-2018-0752) - An elevation of privilege vulnerability exists in the Microsoft Server Message Block (SMB) Server when an attacker with valid credentials attempts to open a specially crafted file over the SMB protocol on the same machine. An attacker who successfully exploited this vulnerability could bypass certain security checks in the operating system. (CVE-2018-0749) - A denial of service vulnerability exists in the way that Windows handles objects in memory. An attacker who successfully exploited the vulnerability could cause a target system to stop responding. Note that the denial of service condition would not allow an attacker to execute code or to elevate user privileges. However, the denial of service condition could prevent authorized users from using system resources. The security update addresses the vulnerability by correcting how Windows handles objects in memory. (CVE-2018-0753)
last seen	2020-06-01
modified	2020-06-02
plugin id	105553
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105553
title	KB4056898: Windows 8.1 and Windows Server 2012 R2 January 2018 Security Update (Meltdown)(Spectre)

NASL family	Misc.
NASL id	CITRIX_XENSERVER_CTX234679.NASL
description	The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities.
last seen	2020-06-01
modified	2020-06-02
plugin id	109725
published	2018-05-11
reporter	This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109725
title	Citrix XenServer Multiple Vulnerabilities (CTX234679)

NASL family	Huawei Local Security Checks
NASL id	EULEROS_SA-2019-2274.NASL
description	According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - The kernel package contains the Linux kernel (vmlinuz), the core of any Linux operating system. The kernel handles the basic functions of the operating system: memory allocation, process allocation, device input and output, etc.Security Fix(es):Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache.(CVE-2017-5754)The ip6gre_err function in net/ipv6/ip6_gre.c in the Linux kernel allows remote attackers to have unspecified impact via vectors involving GRE flags in an IPv6 packet, which trigger an out-of-bounds access.(CVE-2017-5897)The vmw_surface_define_ioctl function in drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux kernel through 4.10.5 does not check for a zero value of certain levels data, which allows local users to cause a denial of service (ZERO_SIZE_PTR dereference, and GPF and possibly panic) via a crafted ioctl call for a /dev/dri/renderD* device.(CVE-2017-7261)The KEYS subsystem in the Linux kernel before 4.10.13 allows local users to cause a denial of service (memory consumption) via a series of KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring calls.(CVE-2017-7472)A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.(CVE-2017-7518)The kill_something_info function in kernel/signal.c in the Linux kernel before 4.13, when an unspecified architecture and compiler is used, might allow local users to cause a denial of service via an INT_MIN argument.(CVE-2018-10124)The xfs_bmap_extents_to_btree function in fs/xfs/libxfs/xfs_bmap.c in the Linux kernel through 4.16.3 allows local users to cause a denial of service (xfs_bmapi_write NULL pointer dereference) via a crafted xfs image.(CVE-2018-10323)The Linux kernel before version 4.11 is vulnerable to a NULL pointer dereference in fs/cifs/cifsencrypt.c:setup_ntlmv2_rsp() that allows an attacker controlling a CIFS server to kernel panic a client that has this server mounted, because an empty TargetInfo field in an NTLMSSP setup negotiation response is mishandled during session recovery.(CVE-2018-1066)The do_get_mempolicy function in mm/mempolicy.c in the Linux kernel before 4.12.9 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted system calls.(CVE-2018-10675)An issue was discovered in fs/xfs/libxfs/xfs_attr_leaf.c in the Linux kernel through 4.17.3. An OOPS may occur for a corrupted xfs image after xfs_da_shrink_inode() is called with a NULL bp.(CVE-2018-13094)An issue was discovered in fs/xfs/xfs_super.c in the Linux kernel before 4.18. A use after free exists, related to xfs_fs_fill_super failure.(CVE-2018-20976)Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a speculative buffer overflow and side-channel analysis.(CVE-2018-3693)In the function sbusfb_ioctl_helper() in drivers/video/fbdev/sbuslib.c in the Linux kernel through 4.15, an integer signedness error allows arbitrary information leakage for the FBIOPUTCMAP_SPARC and FBIOGETCMAP_SPARC commands.(CVE-2018-6412)Race condition in the store_int_with_restart() function in arch/x86/kernel/cpu/mcheck/mce.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (panic) by leveraging root access to write to the check_interval file in a /sys/devices/system/machinecheck/machinecheck directory. NOTE: a third party has indicated that this report is not security relevant.(CVE-2018-7995)In the hidp_process_report in bluetooth, there is an integer overflow. This could lead to an out of bounds write with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android Versions: Android kernel Android ID: A-65853588 References: Upstream kernel.(CVE-2018-9363)In nfc_llcp_build_sdreq_tlv of llcp_commands.c, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel. Android ID: A-73083945.(CVE-2018-9518)A vulnerability was found in Linux kernel
last seen	2020-05-08
modified	2019-11-08
plugin id	130736
published	2019-11-08
reporter	This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/130736
title	EulerOS 2.0 SP3 : kernel (EulerOS-SA-2019-2274)

NASL family	Oracle Linux Local Security Checks
NASL id	ORACLELINUX_ELSA-2018-0151.NASL
description	From Red Hat Security Advisory 2018:0151 : An update for kernel is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update initial mitigations for IBM Power (PowerPC) and IBM zSeries (S390) architectures are provided. * Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	106364
published	2018-01-26
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106364
title	Oracle Linux 7 : kernel (ELSA-2018-0151) (Meltdown) (Spectre)

NASL family	Windows : Microsoft Bulletins
NASL id	SMB_ADV180002_MSSQL.NASL
description	The remote Microsoft SQL Server is missing a security update. It is, therefore, affected by a vulnerability exists within microprocessors utilizing speculative execution and indirect branch prediction, which may allow an attacker with local user access to disclose information via a side-channel analysis.
last seen	2020-06-01
modified	2020-06-02
plugin id	105613
published	2018-01-05
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105613
title	ADV180002: Microsoft SQL Server January 2018 Security Update (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0007.NASL
description	An update for kernel is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update mitigations for x86-64 architecture are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105523
published	2018-01-04
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105523
title	RHEL 7 : kernel (RHSA-2018:0007) (Meltdown) (Spectre)

NASL family	Red Hat Local Security Checks
NASL id	REDHAT-RHSA-2018-0021.NASL
description	An update for kernel-rt is now available for Red Hat Enterprise MRG 2. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es) : An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update mitigations for x86-64 architecture are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105672
published	2018-01-09
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105672
title	RHEL 6 : MRG (RHSA-2018:0021) (Meltdown) (Spectre)

NASL family	Virtuozzo Local Security Checks
NASL id	VIRTUOZZO_VZA-2018-002.NASL
description	According to the versions of the parallels-server-bm-release / vzkernel / etc packages installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities : - CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	105619
published	2018-01-08
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105619
title	Virtuozzo 6 : parallels-server-bm-release / vzkernel / etc (VZA-2018-002)

NASL family	Virtuozzo Local Security Checks
NASL id	VIRTUOZZO_VZA-2018-006.NASL
description	According to the versions of the cpupools / cpupools-features / etc packages installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities : - CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor
last seen	2020-06-01
modified	2020-06-02
plugin id	106587
published	2018-02-05
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106587
title	Virtuozzo 6 : cpupools / cpupools-features / etc (VZA-2018-006)

NASL family	Huawei Local Security Checks
NASL id	EULEROS_SA-2018-1001.NASL
description	According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - The recent speculative execution CVEs address three potential attacks across a wide variety of architectures and hardware platforms. - Note: This issue is present in hardware and cannot be fully fixed via software update. The nature of these vulnerabilities and their fixes introduces the possibility of reduced performance on patched systems. The performance impact depends on the hardware and the applications in place. - The first two variants abuse speculative execution to perform bounds-check bypass (CVE-2017-5753), or by utilizing branch target injection (CVE-2017-5715) to cause kernel code at an address under attacker control to execute speculatively. Collectively these are known as
last seen	2020-05-06
modified	2018-01-08
plugin id	105618
published	2018-01-08
reporter	This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105618
title	EulerOS 2.0 SP2 : kernel (EulerOS-SA-2018-1001)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-1203-1.NASL
description	This update for xen fixes several issues. These security issues were fixed : - CVE-2018-8897: Prevent mishandling of debug exceptions on x86 (XSA-260, bsc#1090820) - Handle HPET timers in IO-APIC mode correctly to prevent malicious or buggy HVM guests from causing a hypervisor crash or potentially privilege escalation/information leaks (XSA-261, bsc#1090822) - Prevent unbounded loop, induced by qemu allowing an attacker to permanently keep a physical CPU core busy (XSA-262, bsc#1090823) - CVE-2018-10472: x86 HVM guest OS users (in certain configurations) were able to read arbitrary dom0 files via QMP live insertion of a CDROM, in conjunction with specifying the target file as the backing file of a snapshot (bsc#1089152). - CVE-2018-10471: x86 PV guest OS users were able to cause a denial of service (out-of-bounds zero write and hypervisor crash) via unexpected INT 80 processing, because of an incorrect fix for CVE-2017-5754 (bsc#1089635). - CVE-2018-7550: The load_multiboot function allowed local guest OS users to execute arbitrary code on the host via a mh_load_end_addr value greater than mh_bss_end_addr, which triggers an out-of-bounds read or write memory access (bsc#1083292). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen	2020-06-01
modified	2020-06-02
plugin id	109722
published	2018-05-11
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/109722
title	SUSE SLES11 Security Update : xen (SUSE-SU-2018:1203-1) (Meltdown)

NASL family	SuSE Local Security Checks
NASL id	SUSE_SU-2018-0115-1.NASL
description	The SUSE Linux Enterprise 12 GA LTSS kernel was updated to receive various security and bugfixes. This update adds mitigations for various side channel attacks against modern CPUs that could disclose content of otherwise unreadable memory (bnc#1068032). - CVE-2017-5753 /
last seen	2020-06-01
modified	2020-06-02
plugin id	106095
published	2018-01-17
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/106095
title	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:0115-1) (Meltdown) (Spectre)

NASL family	Debian Local Security Checks
NASL id	DEBIAN_DSA-4078.NASL
description	Multiple researchers have discovered a vulnerability in Intel processors, enabling an attacker controlling an unprivileged process to read memory from arbitrary addresses, including from the kernel and all other processes running on the system. This specific attack has been named Meltdown and is addressed in the Linux kernel for the Intel x86-64 architecture by a patch set named Kernel Page Table Isolation, enforcing a near complete separation of the kernel and userspace address maps and preventing the attack. This solution might have a performance impact, and can be disabled at boot time by passing pti=off to the kernel command line. We also identified a regression for ancient userspaces using the vsyscall interface, for example chroot and containers using (e)glibc 2.13 and older, including those based on Debian 7 or RHEL/CentOS 6. This regression will be fixed in a later update. The other vulnerabilities (named Spectre) published at the same time are not addressed in this update and will be fixed in a later update.
last seen	2020-06-01
modified	2020-06-02
plugin id	105595
published	2018-01-05
reporter	This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/105595
title	Debian DSA-4078-1 : linux - security update (Meltdown)

Redhat

advisories

rhsa

id	RHSA-2018:0292

Seebug

bulletinFamily	exploit
description	We have discovered that CPU data cache timing can be abused to efficiently leak information out of mis-speculated execution, leading to (at worst) arbitrary virtual memory read vulnerabilities across local security boundaries in various contexts. Variants of this issue are known to affect many modern processors, including certain processors by Intel, AMD and ARM. For a few Intel and AMD CPU models, we have exploits that work against real software. We reported this issue to Intel, AMD and ARM on 2017-06-01 [1]. So far, there are three known variants of the issue: * Variant 1: bounds check bypass (CVE-2017-5753) * Variant 2: branch target injection (CVE-2017-5715) * Variant 3: rogue data cache load (CVE-2017-5754) Before the issues described here were publicly disclosed, Daniel Gruss, Moritz Lipp, Yuval Yarom, Paul Kocher, Daniel Genkin, Michael Schwarz, Mike Hamburg, Stefan Mangard, Thomas Prescher and Werner Haas also reported them; their [writeups/blogposts/paper drafts] are at: * [Spectre](https://spectreattack.com/spectre.pdf) (variants 1 and 2) * [Meltdown](https://meltdownattack.com/meltdown.pdf) (variant 3) During the course of our research, we developed the following proofs of concept (PoCs): 1. A PoC that demonstrates the basic principles behind variant 1 in userspace on the tested Intel Haswell Xeon CPU, the AMD FX CPU, the AMD PRO CPU and an ARM Cortex A57 [2]. This PoC only tests for the ability to read data inside mis-speculated execution within the same process, without crossing any privilege boundaries. 2. A PoC for variant 1 that, when running with normal user privileges under a modern Linux kernel with a distro-standard config, can perform arbitrary reads in a 4GiB range [3] in kernel virtual memory on the Intel Haswell Xeon CPU. If the kernel's BPF JIT is enabled (non-default configuration), it also works on the AMD PRO CPU. On the Intel Haswell Xeon CPU, kernel virtual memory can be read at a rate of around 2000 bytes per second after around 4 seconds of startup time. [4] 3. A PoC for variant 2 that, when running with root privileges inside a KVM guest created using virt-manager on the Intel Haswell Xeon CPU, with a specific (now outdated) version of Debian's distro kernel [5] running on the host, can read host kernel memory at a rate of around 1500 bytes/second, with room for optimization. Before the attack can be performed, some initialization has to be performed that takes roughly between 10 and 30 minutes for a machine with 64GiB of RAM; the needed time should scale roughly linearly with the amount of host RAM. (If 2MB hugepages are available to the guest, the initialization should be much faster, but that hasn't been tested.) 4. A PoC for variant 3 that, when running with normal user privileges, can read kernel memory on the Intel Haswell Xeon CPU under some precondition. We believe that this precondition is that the targeted kernel memory is present in the L1D cache. For interesting resources around this topic, look down into the "Literature" section. A warning regarding explanations about processor internals in this blogpost: This blogpost contains a lot of speculation about hardware internals based on observed behavior, which might not necessarily correspond to what processors are actually doing. We have some ideas on possible mitigations and provided some of those ideas to the processor vendors; however, we believe that the processor vendors are in a much better position than we are to design and evaluate mitigations, and we expect them to be the source of authoritative guidance. The PoC code and the writeups that we sent to the CPU vendors will be made available at a later date. ### Tested Processors * Intel(R) Xeon(R) CPU E5-1650 v3 @ 3.50GHz (called "Intel Haswell Xeon CPU" in the rest of this document) * AMD FX(tm)-8320 Eight-Core Processor (called "AMD FX CPU" in the rest of this document) * AMD PRO A8-9600 R7, 10 COMPUTE CORES 4C+6G (called "AMD PRO CPU" in the rest of this document) * An ARM Cortex A57 core of a Google Nexus 5x phone [6] (called "ARM Cortex A57" in the rest of this document) ### Glossary retire: An instruction retires when its results, e.g. register writes and memory writes, are committed and made visible to the rest of the system. Instructions can be executed out of order, but must always retire in order. logical processor core: A logical processor core is what the operating system sees as a processor core. With hyperthreading enabled, the number of logical cores is a multiple of the number of physical cores. cached/uncached data: In this blogpost, "uncached" data is data that is only present in main memory, not in any of the cache levels of the CPU. Loading uncached data will typically take over 100 cycles of CPU time. speculative execution: A processor can execute past a branch without knowing whether it will be taken or where its target is, therefore executing instructions before it is known whether they should be executed. If this speculation turns out to have been incorrect, the CPU can discard the resulting state without architectural effects and continue execution on the correct execution path. Instructions do not retire before it is known that they are on the correct execution path. mis-speculation window: The time window during which the CPU speculatively executes the wrong code and has not yet detected that mis-speculation has occurred. ### Variant 1: Bounds check bypass This section explains the common theory behind all three variants and the theory behind our PoC for variant 1 that, when running in userspace under a Debian distro kernel, can perform arbitrary reads in a 4GiB region of kernel memory in at least the following configurations: * Intel Haswell Xeon CPU, eBPF JIT is off (default state) * Intel Haswell Xeon CPU, eBPF JIT is on (non-default state) * AMD PRO CPU, eBPF JIT is on (non-default state) The state of the eBPF JIT can be toggled using the net.core.bpf_jit_enable sysctl. ### Theoretical explanation The Intel [Optimization Reference Manual](https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-optimization-manual.pdf) says the following regarding Sandy Bridge (and later microarchitectural revisions) in section 2.3.2.3 ("Branch Prediction"): Branch prediction predicts the branch target and enables the processor to begin executing instructions long before the branch true execution path is known. In section 2.3.5.2 ("L1 DCache"): Loads can: [...] * Be carried out speculatively, before preceding branches are resolved. * Take cache misses out of order and in an overlapped manner. Intel's Software Developer's Manual [7] states in Volume 3A, section 11.7 ("Implicit Caching (Pentium 4, Intel Xeon, and P6 family processors"): Implicit caching occurs when a memory element is made potentially cacheable, although the element may never have been accessed in the normal von Neumann sequence. Implicit caching occurs on the P6 and more recent processor families due to aggressive prefetching, branch prediction, and TLB miss handling. Implicit caching is an extension of the behavior of existing Intel386, Intel486, and Pentium processor systems, since software running on these processor families also has not been able to deterministically predict the behavior of instruction prefetch. Consider the code sample below. If `arr1->length` is uncached, the processor can speculatively load data from `arr1->data[untrusted_offset_from_caller]`. This is an out-of-bounds read. That should not matter because the processor will effectively roll back the execution state when the branch has executed; none of the speculatively executed instructions will retire (e.g. cause registers etc. to be affected). ``` struct array { unsigned long length; unsigned char data[]; }; struct array arr1 = ...; unsigned long untrusted_offset_from_caller = ...; if (untrusted_offset_from_caller < arr1->length) { unsigned char value = arr1->data[untrusted_offset_from_caller]; ... } ``` However, in the following code sample, there's an issue. If `arr1->length`, `arr2->data[0x200]` and `arr2->data[0x300]` are not cached, but all other accessed data is, and the branch conditions are predicted as true, the processor can do the following speculatively before `arr1->length` has been loaded and the execution is re-steered: load value = `arr1->data[untrusted_offset_from_caller]` * start a load from a data-dependent offset in `arr2->data`, loading the corresponding cache line into the L1 cache ``` struct array { unsigned long length; unsigned char data[]; }; struct array arr1 = ...; / small array / struct array arr2 = ...; /* array of size 0x400 / / >0x400 (OUT OF BOUNDS!) / unsigned long untrusted_offset_from_caller = ...; if (untrusted_offset_from_caller < arr1->length) { unsigned char value = arr1->data[untrusted_offset_from_caller]; unsigned long index2 = ((value&1)0x100)+0x200; if (index2 < arr2->length) { unsigned char value2 = arr2->data[index2]; } } ``` After the execution has been returned to the non-speculative path because the processor has noticed that `untrusted_offset_from_caller` is bigger than `arr1->length`, the cache line containing `arr2->data[index2]` stays in the L1 cache. By measuring the time required to load `arr2->data[0x200]` and `arr2->data[0x300]`, an attacker can then determine whether the value of index2 during speculative execution was 0x200 or 0x300 - which discloses whether `arr1->data[untrusted_offset_from_caller]`&1 is 0 or 1. To be able to actually use this behavior for an attack, an attacker needs to be able to cause the execution of such a vulnerable code pattern in the targeted context with an out-of-bounds index. For this, the vulnerable code pattern must either be present in existing code, or there must be an interpreter or JIT engine that can be used to generate the vulnerable code pattern. So far, we have not actually identified any existing, exploitable instances of the vulnerable code pattern; the PoC for leaking kernel memory using variant 1 uses the eBPF interpreter or the eBPF JIT engine, which are built into the kernel and accessible to normal users. A minor variant of this could be to instead use an out-of-bounds read to a function pointer to gain control of execution in the mis-speculated path. We did not investigate this variant further. ### Attacking the kernel This section describes in more detail how variant 1 can be used to leak Linux kernel memory using the eBPF bytecode interpreter and JIT engine. While there are many interesting potential targets for variant 1 attacks, we chose to attack the Linux in-kernel eBPF JIT/interpreter because it provides more control to the attacker than most other JITs. The Linux kernel supports eBPF since version 3.18. Unprivileged userspace code can supply bytecode to the kernel that is verified by the kernel and then: * either interpreted by an in-kernel bytecode interpreter * or translated to native machine code that also runs in kernel context using a JIT engine (which translates individual bytecode instructions without performing any further optimizations) Execution of the bytecode can be triggered by attaching the eBPF bytecode to a socket as a filter and then sending data through the other end of the socket. Whether the JIT engine is enabled depends on a run-time configuration setting - but at least on the tested Intel processor, the attack works independent of that setting. Unlike classic BPF, eBPF has data types like data arrays and function pointer arrays into which eBPF bytecode can index. Therefore, it is possible to create the code pattern described above in the kernel using eBPF bytecode. eBPF's data arrays are less efficient than its function pointer arrays, so the attack will use the latter where possible. Both machines on which this was tested have no SMAP, and the PoC relies on that (but it shouldn't be a precondition in principle). Additionally, at least on the Intel machine on which this was tested, bouncing modified cache lines between cores is slow, apparently because the MESI protocol is used for cache coherence [8]. Changing the reference counter of an eBPF array on one physical CPU core causes the cache line containing the reference counter to be bounced over to that CPU core, making reads of the reference counter on all other CPU cores slow until the changed reference counter has been written back to memory. Because the length and the reference counter of an eBPF array are stored in the same cache line, this also means that changing the reference counter on one physical CPU core causes reads of the eBPF array's length to be slow on other physical CPU cores (intentional false sharing). The attack uses two eBPF programs. The first one tail-calls through a page-aligned eBPF function pointer array prog_map at a configurable index. In simplified terms, this program is used to determine the address of prog_map by guessing the offset from prog_map to a userspace address and tail-calling through prog_map at the guessed offsets. To cause the branch prediction to predict that the offset is below the length of prog_map, tail calls to an in-bounds index are performed in between. To increase the mis-speculation window, the cache line containing the length of prog_map is bounced to another core. To test whether an offset guess was successful, it can be tested whether the userspace address has been loaded into the cache. Because such straightforward brute-force guessing of the address would be slow, the following optimization is used: 215 adjacent userspace memory mappings [9], each consisting of 24 pages, are created at the userspace address user_mapping_area, covering a total area of 231 bytes. Each mapping maps the same physical pages, and all mappings are present in the pagetables. ![](https://images.seebug.org/1515056154332) This permits the attack to be carried out in steps of 2^31 bytes. For each step, after causing an out-of-bounds access through prog_map, only one cache line each from the first 2^4 pages of user_mapping_area have to be tested for cached memory. Because the L3 cache is physically indexed, any access to a virtual address mapping a physical page will cause all other virtual addresses mapping the same physical page to become cached as well. When this attack finds a hit—a cached memory location—the upper 33 bits of the kernel address are known (because they can be derived from the address guess at which the hit occurred), and the low 16 bits of the address are also known (from the offset inside user_mapping_area at which the hit was found). The remaining part of the address of user_mapping_area is the middle. ![](https://images.seebug.org/1515056196730) The remaining bits in the middle can be determined by bisecting the remaining address space: Map two physical pages to adjacent ranges of virtual addresses, each virtual address range the size of half of the remaining search space, then determine the remaining address bit-wise. At this point, a second eBPF program can be used to actually leak data. In pseudocode, this program looks as follows: ``` uint64_t bitmask = <runtime-configurable>; uint64_t bitshift_selector = <runtime-configurable>; uint64_t prog_array_base_offset = <runtime-configurable>; uint64_t secret_data_offset = <runtime-configurable>; // index will be bounds-checked by the runtime, // but the bounds check will be bypassed speculatively uint64_t secret_data = bpf_map_read(array=victim_array, index=secret_data_offset); // select a single bit, move it to a specific position, and add the base offset uint64_t progmap_index = (((secret_data & bitmask) >> bitshift_selector) << 7) + prog_array_base_offset; bpf_tail_call(prog_map, progmap_index); ``` This program reads 8-byte-aligned 64-bit values from an eBPF data array "victim_map" at a runtime-configurable offset and bitmasks and bit-shifts the value so that one bit is mapped to one of two values that are 27 bytes apart (sufficient to not land in the same or adjacent cache lines when used as an array index). Finally it adds a 64-bit offset, then uses the resulting value as an offset into prog_map for a tail call. This program can then be used to leak memory by repeatedly calling the eBPF program with an out-of-bounds offset into victim_map that specifies the data to leak and an out-of-bounds offset into prog_map that causes prog_map + offset to point to a userspace memory area. Misleading the branch prediction and bouncing the cache lines works the same way as for the first eBPF program, except that now, the cache line holding the length of victim_map must also be bounced to another core. ### Variant 2: Branch target injection This section describes the theory behind our PoC for variant 2 that, when running with root privileges inside a KVM guest created using virt-manager on the Intel Haswell Xeon CPU, with a specific version of Debian's distro kernel running on the host, can read host kernel memory at a rate of around 1500 bytes/second. #### Basics Prior research (see the Literature section at the end) has shown that it is possible for code in separate security contexts to influence each other's branch prediction. So far, this has only been used to infer information about where code is located (in other words, to create interference from the victim to the attacker); however, the basic hypothesis of this attack variant is that it can also be used to redirect execution of code in the victim context (in other words, to create interference from the attacker to the victim; the other way around). ![](https://images.seebug.org/1515056233946) The basic idea for the attack is to target victim code that contains an indirect branch whose target address is loaded from memory and flush the cache line containing the target address out to main memory. Then, when the CPU reaches the indirect branch, it won't know the true destination of the jump, and it won't be able to calculate the true destination until it has finished loading the cache line back into the CPU, which takes a few hundred cycles. Therefore, there is a time window of typically over 100 cycles in which the CPU will speculatively execute instructions based on branch prediction. #### Haswell branch prediction internals Some of the internals of the branch prediction implemented by Intel's processors have already been published; however, getting this attack to work properly required significant further experimentation to determine additional details. This section focuses on the branch prediction internals that were experimentally derived from the Intel Haswell Xeon CPU. Haswell seems to have multiple branch prediction mechanisms that work very differently: * A generic branch predictor that can only store one target per source address; used for all kinds of jumps, like absolute jumps, relative jumps and so on. * A specialized indirect call predictor that can store multiple targets per source address; used for indirect calls. * (There is also a specialized return predictor, according to Intel's optimization manual, but we haven't analyzed that in detail yet. If this predictor could be used to reliably dump out some of the call stack through which a VM was entered, that would be very interesting.) #### Generic predictor The generic branch predictor, as documented in prior research, only uses the lower 31 bits of the address of the last byte of the source instruction for its prediction. If, for example, a branch target buffer (BTB) entry exists for a jump from 0x4141.0004.1000 to 0x4141.0004.5123, the generic predictor will also use it to predict a jump from 0x4242.0004.1000. When the higher bits of the source address differ like this, the higher bits of the predicted destination change together with it—in this case, the predicted destination address will be 0x4242.0004.5123—so apparently this predictor doesn't store the full, absolute destination address. Before the lower 31 bits of the source address are used to look up a BTB entry, they are folded together using XOR. Specifically, the following bits are folded together: ![](https://images.seebug.org/1515056301551) In other words, if a source address is XORed with both numbers in a row of this table, the branch predictor will not be able to distinguish the resulting address from the original source address when performing a lookup. For example, the branch predictor is able to distinguish source addresses 0x100.0000 and 0x180.0000, and it can also distinguish source addresses 0x100.0000 and 0x180.8000, but it can't distinguish source addresses 0x100.0000 and 0x140.2000 or source addresses 0x100.0000 and 0x180.4000. In the following, this will be referred to as aliased source addresses. When an aliased source address is used, the branch predictor will still predict the same target as for the unaliased source address. This indicates that the branch predictor stores a truncated absolute destination address, but that hasn't been verified. Based on observed maximum forward and backward jump distances for different source addresses, the low 32-bit half of the target address could be stored as an absolute 32-bit value with an additional bit that specifies whether the jump from source to target crosses a 232 boundary; if the jump crosses such a boundary, bit 31 of the source address determines whether the high half of the instruction pointer should increment or decrement. #### Indirect call predictor The inputs of the BTB lookup for this mechanism seem to be: * The low 12 bits of the address of the source instruction (we are not sure whether it's the address of the first or the last byte) or a subset of them. * The branch history buffer state. If the indirect call predictor can't resolve a branch, it is resolved by the generic predictor instead. Intel's optimization manual hints at this behavior: "Indirect Calls and Jumps. These may either be predicted as having a monotonic target or as having targets that vary in accordance with recent program behavior." The branch history buffer (BHB) stores information about the last 29 taken branches - basically a fingerprint of recent control flow - and is used to allow better prediction of indirect calls that can have multiple targets. The update function of the BHB works as follows (in pseudocode; src is the address of the last byte of the source instruction, dst is the destination address): ``` void bhb_update(uint58_t bhb_state, unsigned long src, unsigned long dst) { bhb_state <<= 2; bhb_state ^= (dst & 0x3f); bhb_state ^= (src & 0xc0) >> 6; bhb_state ^= (src & 0xc00) >> (10 - 2); bhb_state ^= (src & 0xc000) >> (14 - 4); bhb_state ^= (src & 0x30) << (6 - 4); bhb_state ^= (src & 0x300) << (8 - 8); bhb_state ^= (src & 0x3000) >> (12 - 10); bhb_state ^= (src & 0x30000) >> (16 - 12); bhb_state ^= (src & 0xc0000) >> (18 - 14); } ``` Some of the bits of the BHB state seem to be folded together further using XOR when used for a BTB access, but the precise folding function hasn't been understood yet. The BHB is interesting for two reasons. First, knowledge about its approximate behavior is required in order to be able to accurately cause collisions in the indirect call predictor. But it also permits dumping out the BHB state at any repeatable program state at which the attacker can execute code - for example, when attacking a hypervisor, directly after a hypercall. The dumped BHB state can then be used to fingerprint the hypervisor or, if the attacker has access to the hypervisor binary, to determine the low 20 bits of the hypervisor load address (in the case of KVM: the low 20 bits of the load address of kvm-intel.ko). #### Reverse-Engineering Branch Predictor Internals This subsection describes how we reverse-engineered the internals of the Haswell branch predictor. Some of this is written down from memory, since we didn't keep a detailed record of what we were doing. We initially attempted to perform BTB injections into the kernel using the generic predictor, using the knowledge from prior research that the generic predictor only looks at the lower half of the source address and that only a partial target address is stored. This kind of worked - however, the injection success rate was very low, below 1%. (This is the method we used in our preliminary PoCs for method 2 against modified hypervisors running on Haswell.) We decided to write a userspace test case to be able to more easily test branch predictor behavior in different situations. Based on the assumption that branch predictor state is shared between hyperthreads [10], we wrote a program of which two instances are each pinned to one of the two logical processors running on a specific physical core, where one instance attempts to perform branch injections while the other measures how often branch injections are successful. Both instances were executed with ASLR disabled and had the same code at the same addresses. The injecting process performed indirect calls to a function that accesses a (per-process) test variable; the measuring process performed indirect calls to a function that tests, based on timing, whether the per-process test variable is cached, and then evicts it using CLFLUSH. Both indirect calls were performed through the same callsite. Before each indirect call, the function pointer stored in memory was flushed out to main memory using CLFLUSH to widen the speculation time window. Additionally, because of the reference to "recent program behavior" in Intel's optimization manual, a bunch of conditional branches that are always taken were inserted in front of the indirect call. In this test, the injection success rate was above 99%, giving us a base setup for future experiments. ![](https://images.seebug.org/1515056368577) We then tried to figure out the details of the prediction scheme. We assumed that the prediction scheme uses a global branch history buffer of some kind. To determine the duration for which branch information stays in the history buffer, a conditional branch that is only taken in one of the two program instances was inserted in front of the series of always-taken conditional jumps, then the number of always-taken conditional jumps (N) was varied. The result was that for N=25, the processor was able to distinguish the branches (misprediction rate under 1%), but for N=26, it failed to do so (misprediction rate over 99%). Therefore, the branch history buffer had to be able to store information about at least the last 26 branches. The code in one of the two program instances was then moved around in memory. This revealed that only the lower 20 bits of the source and target addresses have an influence on the branch history buffer. Testing with different types of branches in the two program instances revealed that static jumps, taken conditional jumps, calls and returns influence the branch history buffer the same way; non-taken conditional jumps don't influence it; the address of the last byte of the source instruction is the one that counts; IRETQ doesn't influence the history buffer state (which is useful for testing because it permits creating program flow that is invisible to the history buffer). Moving the last conditional branch before the indirect call around in memory multiple times revealed that the branch history buffer contents can be used to distinguish many different locations of that last conditional branch instruction. This suggests that the history buffer doesn't store a list of small history values; instead, it seems to be a larger buffer in which history data is mixed together. However, a history buffer needs to "forget" about past branches after a certain number of new branches have been taken in order to be useful for branch prediction. Therefore, when new data is mixed into the history buffer, this can not cause information in bits that are already present in the history buffer to propagate downwards - and given that, upwards combination of information probably wouldn't be very useful either. Given that branch prediction also must be very fast, we concluded that it is likely that the update function of the history buffer left-shifts the old history buffer, then XORs in the new state (see diagram). ![](https://images.seebug.org/1515056391971) If this assumption is correct, then the history buffer contains a lot of information about the most recent branches, but only contains as many bits of information as are shifted per history buffer update about the last branch about which it contains any data. Therefore, we tested whether flipping different bits in the source and target addresses of a jump followed by 32 always-taken jumps with static source and target allows the branch prediction to disambiguate an indirect call. [11] With 32 static jumps in between, no bit flips seemed to have an influence, so we decreased the number of static jumps until a difference was observable. The result with 28 always-taken jumps in between was that bits 0x1 and 0x2 of the target and bits 0x40 and 0x80 of the source had such an influence; but flipping both 0x1 in the target and 0x40 in the source or 0x2 in the target and 0x80 in the source did not permit disambiguation. This shows that the per-insertion shift of the history buffer is 2 bits and shows which data is stored in the least significant bits of the history buffer. We then repeated this with decreased amounts of fixed jumps after the bit-flipped jump to determine which information is stored in the remaining bits. #### Reading host memory from a KVM guest Locating the host kernel Our PoC locates the host kernel in several steps. The information that is determined and necessary for the next steps of the attack consists of: lower 20 bits of the address of kvm-intel.ko * full address of kvm.ko * full address of vmlinux Looking back, this is unnecessarily complicated, but it nicely demonstrates the various techniques an attacker can use. A simpler way would be to first determine the address of vmlinux, then bisect the addresses of kvm.ko and kvm-intel.ko. In the first step, the address of kvm-intel.ko is leaked. For this purpose, the branch history buffer state after guest entry is dumped out. Then, for every possible value of bits 12..19 of the load address of kvm-intel.ko, the expected lowest 16 bits of the history buffer are computed based on the load address guess and the known offsets of the last 8 branches before guest entry, and the results are compared against the lowest 16 bits of the leaked history buffer state. The branch history buffer state is leaked in steps of 2 bits by measuring misprediction rates of an indirect call with two targets. One way the indirect call is reached is from a vmcall instruction followed by a series of N branches whose relevant source and target address bits are all zeroes. The second way the indirect call is reached is from a series of controlled branches in userspace that can be used to write arbitrary values into the branch history buffer. Misprediction rates are measured as in the section "Reverse-Engineering Branch Predictor Internals", using one call target that loads a cache line and another one that checks whether the same cache line has been loaded. ![](https://images.seebug.org/1515056430572) With N=29, mispredictions will occur at a high rate if the controlled branch history buffer value is zero because all history buffer state from the hypercall has been erased. With N=28, mispredictions will occur if the controlled branch history buffer value is one of `0<<(282), 1<<(282), 2<<(282), 3<<(282)` - by testing all four possibilities, it can be detected which one is right. Then, for decreasing values of N, the four possibilities are `{0\|1\|2\|3}<<(282) \| (history_buffer_for(N+1) >> 2)`. By repeating this for decreasing values for N, the branch history buffer value for N=0 can be determined. ![](https://images.seebug.org/1515056469539) At this point, the low 20 bits of kvm-intel.ko are known; the next step is to roughly locate kvm.ko. For this, the generic branch predictor is used, using data inserted into the BTB by an indirect call from kvm.ko to kvm-intel.ko that happens on every hypercall; this means that the source address of the indirect call has to be leaked out of the BTB. kvm.ko will probably be located somewhere in the range from 0xffffffffc0000000 to 0xffffffffc4000000, with page alignment (0x1000). This means that the first four entries in the table in the section "Generic Predictor" apply; there will be 2^4-1=15 aliasing addresses for the correct one. But that is also an advantage: It cuts down the search space from 0x4000 to 0x4000/2^4=1024. To find the right address for the source or one of its aliasing addresses, code that loads data through a specific register is placed at all possible call targets (the leaked low 20 bits of kvm-intel.ko plus the in-module offset of the call target plus a multiple of 2^20) and indirect calls are placed at all possible call sources. Then, alternatingly, hypercalls are performed and indirect calls are performed through the different possible non-aliasing call sources, with randomized history buffer state that prevents the specialized prediction from working. After this step, there are 2^16 remaining possibilities for the load address of kvm.ko. Next, the load address of vmlinux can be determined in a similar way, using an indirect call from vmlinux to kvm.ko. Luckily, none of the bits which are randomized in the load address of vmlinux are folded together, so unlike when locating kvm.ko, the result will directly be unique. vmlinux has an alignment of 2MiB and a randomization range of 1GiB, so there are still only 512 possible addresses. Because (as far as we know) a simple hypercall won't actually cause indirect calls from vmlinux to kvm.ko, we instead use port I/O from the status register of an emulated serial port, which is present in the default configuration of a virtual machine created with virt-manager. The only remaining piece of information is which one of the 16 aliasing load addresses of kvm.ko is actually correct. Because the source address of an indirect call to kvm.ko is known, this can be solved using bisection: Place code at the various possible targets that, depending on which instance of the code is speculatively executed, loads one of two cache lines, and measure which one of the cache lines gets loaded. #### Identifying cache sets The PoC assumes that the VM does not have access to hugepages.To discover eviction sets for all L3 cache sets with a specific alignment relative to a 4KiB page boundary, the PoC first allocates 25600 pages of memory. Then, in a loop, it selects random subsets of all remaining unsorted pages such that the expected number of sets for which an eviction set is contained in the subset is 1, reduces each subset down to an eviction set by repeatedly accessing its cache lines and testing whether the cache lines are always cached (in which case they're probably not part of an eviction set) and attempts to use the new eviction set to evict all remaining unsorted cache lines to determine whether they are in the same cache set [12]. #### Locating the host-virtual address of a guest page Because this attack uses a FLUSH+RELOAD approach for leaking data, it needs to know the host-kernel-virtual address of one guest page. Alternative approaches such as PRIME+PROBE should work without that requirement. The basic idea for this step of the attack is to use a branch target injection attack against the hypervisor to load an attacker-controlled address and test whether that caused the guest-owned page to be loaded. For this, a gadget that simply loads from the memory location specified by R8 can be used - R8-R11 still contain guest-controlled values when the first indirect call after a guest exit is reached on this kernel build. We expected that an attacker would need to either know which eviction set has to be used at this point or brute-force it simultaneously; however, experimentally, using random eviction sets works, too. Our theory is that the observed behavior is actually the result of L1D and L2 evictions, which might be sufficient to permit a few instructions worth of speculative execution. The host kernel maps (nearly?) all physical memory in the physmap area, including memory assigned to KVM guests. However, the location of the physmap is randomized (with a 1GiB alignment), in an area of size 128PiB. Therefore, directly bruteforcing the host-virtual address of a guest page would take a long time. It is not necessarily impossible; as a ballpark estimate, it should be possible within a day or so, maybe less, assuming 12000 successful injections per second and 30 guest pages that are tested in parallel; but not as impressive as doing it in a few minutes. To optimize this, the problem can be split up: First, brute-force the physical address using a gadget that can load from physical addresses, then brute-force the base address of the physmap region. Because the physical address can usually be assumed to be far below 128PiB, it can be brute-forced more efficiently, and brute-forcing the base address of the physmap region afterwards is also easier because then address guesses with 1GiB alignment can be used. To brute-force the physical address, the following gadget can be used: ``` ffffffff810a9def: 4c 89 c0 mov rax,r8 ffffffff810a9df2: 4d 63 f9 movsxd r15,r9d ffffffff810a9df5: 4e 8b 04 fd c0 b3 a6 mov r8,QWORD PTR [r158-0x7e594c40] ffffffff810a9dfc: 81 ffffffff810a9dfd: 4a 8d 3c 00 lea rdi,[rax+r81] ffffffff810a9e01: 4d 8b a4 00 f8 00 00 mov r12,QWORD PTR [r8+rax1+0xf8] ffffffff810a9e08: 00 ``` This gadget permits loading an 8-byte-aligned value from the area around the kernel text section by setting R9 appropriately, which in particular permits loading page_offset_base, the start address of the physmap. Then, the value that was originally in R8 - the physical address guess minus 0xf8 - is added to the result of the previous load, 0xfa is added to it, and the result is dereferenced. #### Cache set selection To select the correct L3 eviction set, the attack from the following section is essentially executed with different eviction sets until it works. #### Leaking data At this point, it would normally be necessary to locate gadgets in the host kernel code that can be used to actually leak data by reading from an attacker-controlled location, shifting and masking the result appropriately and then using the result of that as offset to an attacker-controlled address for a load. But piecing gadgets together and figuring out which ones work in a speculation context seems annoying. So instead, we decided to use the eBPF interpreter, which is built into the host kernel - while there is no legitimate way to invoke it from inside a VM, the presence of the code in the host kernel's text section is sufficient to make it usable for the attack, just like with ordinary ROP gadgets. The eBPF interpreter entry point has the following function signature: ``` static unsigned int __bpf_prog_run(void ctx, const struct bpf_insn insn) ``` The second parameter is a pointer to an array of statically pre-verified eBPF instructions to be executed - which means that `__bpf_prog_run()` will not perform any type checks or bounds checks. The first parameter is simply stored as part of the initial emulated register state, so its value doesn't matter. The eBPF interpreter provides, among other things: * multiple emulated 64-bit registers * 64-bit immediate writes to emulated registers * memory reads from addresses stored in emulated registers * bitwise operations (including bit shifts) and arithmetic operations To call the interpreter entry point, a gadget that gives RSI and RIP control given R8-R11 control and controlled data at a known memory location is necessary. The following gadget provides this functionality: ``` ffffffff81514edd: 4c 89 ce mov rsi,r9 ffffffff81514ee0: 41 ff 90 b0 00 00 00 call QWORD PTR [r8+0xb0] ``` Now, by pointing R8 and R9 at the mapping of a guest-owned page in the physmap, it is possible to speculatively execute arbitrary unvalidated eBPF bytecode in the host kernel. Then, relatively straightforward bytecode can be used to leak data into the cache. ### Variant 3: Rogue data cache load Basically, read Anders Fogh's blogpost: https://cyber.wtf/2017/07/28/negative-result-reading-kernel-memory-from-user-mode/ In summary, an attack using this variant of the issue attempts to read kernel memory from userspace without misdirecting the control flow of kernel code. This works by using the code pattern that was used for the previous variants, but in userspace. The underlying idea is that the permission check for accessing an address might not be on the critical path for reading data from memory to a register, where the permission check could have significant performance impact. Instead, the memory read could make the result of the read available to following instructions immediately and only perform the permission check asynchronously, setting a flag in the reorder buffer that causes an exception to be raised if the permission check fails. We do have a few additions to make to Anders Fogh's blogpost: ``` "Imagine the following instruction executed in usermode mov rax,[somekernelmodeaddress] It will cause an interrupt when retired, [...]" ``` It is also possible to already execute that instruction behind a high-latency mispredicted branch to avoid taking a page fault. This might also widen the speculation window by increasing the delay between the read from a kernel address and delivery of the associated exception. "First, I call a syscall that touches this memory. Second, I use the prefetcht0 instruction to improve my odds of having the address loaded in L1." When we used prefetch instructions after doing a syscall, the attack stopped working for us, and we have no clue why. Perhaps the CPU somehow stores whether access was denied on the last access and prevents the attack from working if that is the case? "Fortunately I did not get a slow read suggesting that Intel null’s the result when the access is not allowed." That (read from kernel address returns all-zeroes) seems to happen for memory that is not sufficiently cached but for which pagetable entries are present, at least after repeated read attempts. For unmapped memory, the kernel address read does not return a result at all. #### Ideas for further research We believe that our research provides many remaining research topics that we have not yet investigated, and we encourage other public researchers to look into these. This section contains an even higher amount of speculation than the rest of this blogpost - it contains untested ideas that might well be useless. #### Leaking without data cache timing It would be interesting to explore whether there are microarchitectural attacks other than measuring data cache timing that can be used for exfiltrating data out of speculative execution. #### Other microarchitectures Our research was relatively Haswell-centric so far. It would be interesting to see details e.g. on how the branch prediction of other modern processors works and how well it can be attacked. #### Other JIT engines We developed a successful variant 1 attack against the JIT engine built into the Linux kernel. It would be interesting to see whether attacks against more advanced JIT engines with less control over the system are also practical - in particular, JavaScript engines. #### More efficient scanning for host-virtual addresses and cache sets In variant 2, while scanning for the host-virtual address of a guest-owned page, it might make sense to attempt to determine its L3 cache set first. This could be done by performing L3 evictions using an eviction pattern through the physmap, then testing whether the eviction affected the guest-owned page. The same might work for cache sets - use an L1D+L2 eviction set to evict the function pointer in the host kernel context, use a gadget in the kernel to evict an L3 set using physical addresses, then use that to identify which cache sets guest lines belong to until a guest-owned eviction set has been constructed. Dumping the complete BTB state Given that the generic BTB seems to only be able to distinguish 231-8 or fewer source addresses, it seems feasible to dump out the complete BTB state generated by e.g. a hypercall in a timeframe around the order of a few hours. (Scan for jump sources, then for every discovered jump source, bisect the jump target.) This could potentially be used to identify the locations of functions in the host kernel even if the host kernel is custom-built. The source address aliasing would reduce the usefulness somewhat, but because target addresses don't suffer from that, it might be possible to correlate (source,target) pairs from machines with different KASLR offsets and reduce the number of candidate addresses based on KASLR being additive while aliasing is bitwise. This could then potentially allow an attacker to make guesses about the host kernel version or the compiler used to build it based on jump offsets or distances between functions. #### Variant 2: Leaking with more efficient gadgets If sufficiently efficient gadgets are used for variant 2, it might not be necessary to evict host kernel function pointers from the L3 cache at all; it might be sufficient to only evict them from L1D and L2. #### Various speedups In particular the variant 2 PoC is still a bit slow. This is probably partly because: * It only leaks one bit at a time; leaking more bits at a time should be doable. * It heavily uses IRETQ for hiding control flow from the processor. It would be interesting to see what data leak rate can be achieved using variant 2. #### Leaking or injection through the return predictor If the return predictor also doesn't lose its state on a privilege level change, it might be useful for either locating the host kernel from inside a VM (in which case bisection could be used to very quickly discover the full address of the host kernel) or injecting return targets (in particular if the return address is stored in a cache line that can be flushed out by the attacker and isn't reloaded before the return instruction). However, we have not performed any experiments with the return predictor that yielded conclusive results so far. #### Leaking data out of the indirect call predictor We have attempted to leak target information out of the indirect call predictor, but haven't been able to make it work. ### Vendor statements The following statement were provided to us regarding this issue from the vendors to whom Project Zero disclosed this vulnerability: ### Intel No current statement provided at this time. ### AMD AMD provided the following link: http://www.amd.com/en/corporate/speculative-execution ### ARM Arm recognises that the speculation functionality of many modern high-performance processors, despite working as intended, can be used in conjunction with the timing of cache operations to leak some information as described in this blog. Correspondingly, Arm has developed software mitigations that we recommend be deployed. Specific details regarding the affected processors and mitigations can be found at this website: https://developer.arm.com/support/security-update Arm has included a detailed technical whitepaper as well as links to information from some of Arm’s architecture partners regarding their specific implementations and mitigations. ### Literature Note that some of these documents - in particular Intel's documentation - change over time, so quotes from and references to it may not reflect the latest version of Intel's documentation. * https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-optimization-manual.pdf: Intel's optimization manual has many interesting pieces of optimization advice that hint at relevant microarchitectural behavior; for example: * "Placing data immediately following an indirect branch can cause a performance problem. If the data consists of all zeros, it looks like a long stream of ADDs to memory destinations and this can cause resource conflicts and slow down branch recovery. Also, data immediately following indirect branches may appear as branches to the branch predication [sic] hardware, which can branch off to execute other data pages. This can lead to subsequent self-modifying code problems." * "Loads can:[...]Be carried out speculatively, before preceding branches are resolved." * "Software should avoid writing to a code page in the same 1-KByte subpage that is being executed or fetching code in the same 2-KByte subpage of that is being written. In addition, sharing a page containing directly or speculatively executed code with another processor as a data page can trigger an SMC condition that causes the entire pipeline of the machine and the trace cache to be cleared. This is due to the self-modifying code condition." * "if mapped as WB or WT, there is a potential for speculative processor reads to bring the data into the caches" * "Failure to map the region as WC may allow the line to be speculatively read into the processor caches (via the wrong path of a mispredicted branch)." * https://software.intel.com/en-us/articles/intel-sdm: Intel's Software Developer Manuals * http://www.agner.org/optimize/microarchitecture.pdf: Agner Fog's documentation of reverse-engineered processor behavior and relevant theory was very helpful for this research. * http://www.cs.binghamton.edu/~dima/micro16.pdf and https://github.com/felixwilhelm/mario_baslr: Prior research by Dmitry Evtyushkin, Dmitry Ponomarev and Nael Abu-Ghazaleh on abusing branch target buffer behavior to leak addresses that we used as a starting point for analyzing the branch prediction of Haswell processors. Felix Wilhelm's research based on this provided the basic idea behind variant 2. * https://arxiv.org/pdf/1507.06955.pdf: The rowhammer.js research by Daniel Gruss, Clémentine Maurice and Stefan Mangard contains information about L3 cache eviction patterns that we reused in the KVM PoC to evict a function pointer. * https://xania.org/201602/bpu-part-one: Matt Godbolt blogged about reverse-engineering the structure of the branch predictor on Intel processors. * https://www.sophia.re/thesis.pdf: Sophia D'Antoine wrote a thesis that shows that opcode scheduling can theoretically be used to transmit data between hyperthreads. * https://gruss.cc/files/kaiser.pdf: Daniel Gruss, Moritz Lipp, Michael Schwarz, Richard Fellner, Clémentine Maurice, and Stefan Mangard wrote a paper on mitigating microarchitectural issues caused by pagetable sharing between userspace and the kernel. * https://www.jilp.org/: This journal contains many articles on branch prediction. * http://blog.stuffedcow.net/2013/01/ivb-cache-replacement/: This blogpost by Henry Wong investigates the L3 cache replacement policy used by Intel's Ivy Bridge architecture. ### References * [1] This initial report did not contain any information about variant 3. We had discussed whether direct reads from kernel memory could work, but thought that it was unlikely. We later tested and reported variant 3 prior to the publication of Anders Fogh's work at https://cyber.wtf/2017/07/28/negative-result-reading-kernel-memory-from-user-mode/. * [2] The precise model names are listed in the section "Tested Processors". The code for reproducing this is in the writeup_files.tar archive in our bugtracker, in the folders userland_test_x86 and userland_test_aarch64. * [3] The attacker-controlled offset used to perform an out-of-bounds access on an array by this PoC is a 32-bit value, limiting the accessible addresses to a 4GiB window in the kernel heap area. * [4] This PoC won't work on CPUs with SMAP support; however, that is not a fundamental limitation. * [5] linux-image-4.9.0-3-amd64 at version 4.9.30-2+deb9u2 (available at http://snapshot.debian.org/archive/debian/20170701T224614Z/pool/main/l/linux/linux-image-4.9.0-3-amd64_4.9.30-2%2Bdeb9u2_amd64.deb, sha256 5f950b26aa7746d75ecb8508cc7dab19b3381c9451ee044cd2edfd6f5efff1f8, signed via Release.gpg, Release, Packages.xz); that was the current distro kernel version when I set up the machine. It is very unlikely that the PoC works with other kernel versions without changes; it contains a number of hardcoded addresses/offsets. * [6] The phone was running an Android build from May 2017. * [7] https://software.intel.com/en-us/articles/intel-sdm * [8] https://software.intel.com/en-us/articles/avoiding-and-identifying-false-sharing-among-threads, section "background" * [9] More than 215 mappings would be more efficient, but the kernel places a hard cap of 216 on the number of VMAs that a process can have. * [10] Intel's optimization manual states that "In the first implementation of HT Technology, the physical execution resources are shared and the architecture state is duplicated for each logical processor", so it would be plausible for predictor state to be shared. While predictor state could be tagged by logical core, that would likely reduce performance for multithreaded processes, so it doesn't seem likely. * [11] In case the history buffer was a bit bigger than we had measured, we added some margin - in particular because we had seen slightly different history buffer lengths in different experiments, and because 26 isn't a very round number. * [12] The basic idea comes from http://palms.ee.princeton.edu/system/files/SP_vfinal.pdf, section IV, although the authors of that paper still used hugepages.
id	SSV:97059
last seen	2018-01-04
modified	2018-01-04
published	2018-01-04
reporter	Root
source	https://www.seebug.org/vuldb/ssvid-97059
title	Reading privileged memory with a side-channel (Meltdown & Spectre)

The Hacker News

id	THN:71C19B8F2C6EDB0AFDA5AA0280A20C00
last seen	2018-07-11
modified	2018-07-11
published	2018-07-11
reporter	The Hacker News
source	https://thehackernews.com/2018/07/intel-spectre-vulnerability.html
title	Two New Spectre-Class CPU Flaws Discovered—Intel Pays $100K Bounty

id	THN:C4C9BC61AD42FB9F46B30ECA56F71393
last seen	2018-05-22
modified	2018-05-22
published	2018-05-22
reporter	Swati Khandelwal
source	https://thehackernews.com/2018/05/fourth-critical-spectre-cpu-flaw.html
title	New Spectre (Variant 4) CPU Flaw Discovered—Intel, ARM, AMD Affected

id	THN:788E9312DDA39D9A09855DF379A0FD4D
last seen	2018-01-27
modified	2018-01-04
published	2018-01-03
reporter	Mohit Kumar
source	https://thehackernews.com/2018/01/meltdown-spectre-vulnerability.html
title	Meltdown and Spectre CPU Flaws Affect Intel, ARM, AMD Processors

id	THN:58CFE19533148E77597FE0AC59963145
last seen	2018-01-27
modified	2018-01-05
published	2018-01-04
reporter	Swati Khandelwal
source	https://thehackernews.com/2018/01/meltdown-spectre-patches.html
title	[Guide] How to Protect Your Devices Against Meltdown and Spectre Attacks

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

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