Vulnerabilities > CVE-2016-8669 - Divide By Zero vulnerability in multiple products
Attack vector
LOCAL Attack complexity
LOW Privileges required
HIGH Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
The serial_update_parameters function in hw/char/serial.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Nessus
NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201611-11.NASL description The remote host is affected by the vulnerability described in GLSA-201611-11 (QEMU: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in QEMU. Please review the CVE identifiers referenced below for details. Impact : A privileged user /process within a guest QEMU environment can cause a Denial of Service condition against the QEMU guest process or the host. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 95018 published 2016-11-21 reporter This script is Copyright (C) 2016-2017 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/95018 title GLSA-201611-11 : QEMU: Multiple vulnerabilities NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-2936-1.NASL description This update for qemu fixes the following issues : - Patch queue updated from https://gitlab.suse.de/virtualization/qemu.git SLE12 - Change package post script udevadm trigger calls to be device specific (bsc#1002116) - Address various security/stability issues - Fix OOB access in xlnx.xpx-ethernetlite emulation (CVE-2016-7161 bsc#1001151) - Fix OOB access in VMware SVGA emulation (CVE-2016-7170 bsc#998516) - Fix DOS in Vmware pv scsi interface (CVE-2016-7421 bsc#999661) - Fix DOS in ColdFire Fast Ethernet Controller emulation (CVE-2016-7908 bsc#1002550) - Fix DOS in USB xHCI emulation (CVE-2016-8576 bsc#1003878) - Fix DOS in virtio-9pfs (CVE-2016-8578 bsc#1003894) - Fix DOS in virtio-9pfs (CVE-2016-9105 bsc#1007494) - Fix DOS in virtio-9pfs (CVE-2016-8577 bsc#1003893) - Plug data leak in virtio-9pfs interface (CVE-2016-9103 bsc#1007454) - Fix DOS in virtio-9pfs interface (CVE-2016-9102 bsc#1007450) - Fix DOS in virtio-9pfs (CVE-2016-9106 bsc#1007495) - Fix DOS in 16550A UART emulation (CVE-2016-8669 bsc#1004707) - Fix DOS in PC-Net II emulation (CVE-2016-7909 bsc#1002557) - Fix DOS in PRO100 emulation (CVE-2016-9101 bsc#1007391) - Fix DOS in RTL8139 emulation (CVE-2016-8910 bsc#1006538) - Fix DOS in Intel HDA controller emulation (CVE-2016-8909 bsc#1006536) - Fix DOS in virtio-9pfs (CVE-2016-9104 bsc#1007493) - Fix DOS in JAZZ RC4030 emulation (CVE-2016-8667 bsc#1004702) 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 95396 published 2016-11-29 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95396 title SUSE SLES12 Security Update : qemu (SUSE-SU-2016:2936-1) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-679.NASL description Multiple vulnerabilities have been found in qemu-kvm : CVE-2016-8576 qemu-kvm built with the USB xHCI controller emulation support is vulnerable to an infinite loop issue. It could occur while processing USB command ring in last seen 2020-03-17 modified 2016-10-26 plugin id 94258 published 2016-10-26 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/94258 title Debian DLA-679-1 : qemu-kvm security update NASL family Huawei Local Security Checks NASL id EULEROS_SA-2020-1430.NASL description According to the versions of the qemu-kvm packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - In libslirp 4.1.0, as used in QEMU 4.2.0, tcp_subr.c misuses snprintf return values, leading to a buffer overflow in later code.(CVE-2020-8608) - This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.(CVE-2019-11135) - tcp_emu in tcp_subr.c in libslirp 4.1.0, as used in QEMU 4.2.0, mismanages memory, as demonstrated by IRC DCC commands in EMU_IRC. This can cause a heap-based buffer overflow or other out-of-bounds access which can lead to a DoS or potential execute arbitrary code.(CVE-2020-7039) - ip_reass in ip_input.c in libslirp 4.0.0 has a heap-based buffer overflow via a large packet because it mishandles a case involving the first fragment.(CVE-2019-14378) - Integer overflow in the VNC display driver in QEMU before 2.1.0 allows attachers to cause a denial of service (process crash) via a CLIENT_CUT_TEXT message, which triggers an infinite loop.(CVE-2015-5239) - Buffer overflow in the send_control_msg function in hw/char/virtio-serial-bus.c in QEMU before 2.4.0 allows guest users to cause a denial of service (QEMU process crash) via a crafted virtio control message.(CVE-2015-5745) - The ne2000_receive function in hw/net/ne2000.c in QEMU before 2.4.0.1 allows attackers to cause a denial of service (infinite loop and instance crash) or possibly execute arbitrary code via vectors related to receiving packets.(CVE-2015-5278) - The process_tx_desc function in hw/net/e1000.c in QEMU before 2.4.0.1 does not properly process transmit descriptor data when sending a network packet, which allows attackers to cause a denial of service (infinite loop and guest crash) via unspecified vectors.(CVE-2015-6815) - Heap-based buffer overflow in the ne2000_receive function in hw/net/ne2000.c in QEMU before 2.4.0.1 allows guest OS users to cause a denial of service (instance crash) or possibly execute arbitrary code via vectors related to receiving packets.(CVE-2015-5279) - Heap-based buffer overflow in the .receive callback of xlnx.xps-ethernetlite in QEMU (aka Quick Emulator) allows attackers to execute arbitrary code on the QEMU host via a large ethlite packet.(CVE-2016-7161) - hw/net/vmxnet3.c in QEMU 2.0.0-rc0, 1.7.1, and earlier allows local guest users to cause a denial of service or possibly execute arbitrary code via vectors related to (1) RX or (2) TX queue numbers or (3) interrupt indices. NOTE: some of these details are obtained from third party information.(CVE-2013-4544) - The slirp_smb function in net/slirp.c in QEMU 2.3.0 and earlier creates temporary files with predictable names, which allows local users to cause a denial of service (instantiation failure) by creating /tmp/qemu-smb.*-* files before the program.(CVE-2015-4037) - hw/ide/core.c in QEMU does not properly restrict the commands accepted by an ATAPI device, which allows guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands, as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive, which triggers a divide-by-zero error and instance crash.(CVE-2015-6855) - hw/virtio/virtio.c in the Virtual Network Device (virtio-net) support in QEMU, when big or mergeable receive buffers are not supported, allows remote attackers to cause a denial of service (guest network consumption) via a flood of jumbo frames on the (1) tuntap or (2) macvtap interface.(CVE-2015-7295) - The MSI-X MMIO support in hw/pci/msix.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by leveraging failure to define the .write method.(CVE-2015-7549) - The eepro100 emulator in QEMU qemu-kvm blank allows local guest users to cause a denial of service (application crash and infinite loop) via vectors involving the command block list.(CVE-2015-8345) - Qemu, when built with VNC display driver support, allows remote attackers to cause a denial of service (arithmetic exception and application crash) via crafted SetPixelFormat messages from a client.(CVE-2015-8504) - The ehci_process_itd function in hw/usb/hcd-ehci.c in QEMU allows local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via a circular isochronous transfer descriptor (iTD) list.(CVE-2015-8558) - Memory leak in net/vmxnet3.c in QEMU allows remote attackers to cause a denial of service (memory consumption).(CVE-2015-8567) - Memory leak in QEMU, when built with a VMWARE VMXNET3 paravirtual NIC emulator support, allows local guest users to cause a denial of service (host memory consumption) by trying to activate the vmxnet3 device repeatedly.(CVE-2015-8568) - Stack-based buffer overflow in the megasas_ctrl_get_info function in QEMU, when built with SCSI MegaRAID SAS HBA emulation support, allows local guest users to cause a denial of service (QEMU instance crash) via a crafted SCSI controller CTRL_GET_INFO command.(CVE-2015-8613) - Use-after-free vulnerability in hw/ide/ahci.c in QEMU, when built with IDE AHCI Emulation support, allows guest OS users to cause a denial of service (instance crash) or possibly execute arbitrary code via an invalid AHCI Native Command Queuing (NCQ) AIO command.(CVE-2016-1568) - QEMU (aka Quick Emulator) built with the USB EHCI emulation support is vulnerable to a null pointer dereference flaw. It could occur when an application attempts to write to EHCI capabilities registers. A privileged user inside quest could use this flaw to crash the QEMU process instance resulting in DoS.(CVE-2016-2198) - The ohci_bus_start function in the USB OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors related to multiple eof_timers.(CVE-2016-2391) - The is_rndis function in the USB Net device emulator (hw/usb/dev-network.c) in QEMU before 2.5.1 does not properly validate USB configuration descriptor objects, which allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors involving a remote NDIS control message packet.(CVE-2016-2392) - Multiple integer overflows in the USB Net device emulator (hw/usb/dev-network.c) in QEMU before 2.5.1 allow local guest OS administrators to cause a denial of service (QEMU process crash) or obtain sensitive host memory information via a remote NDIS control message packet that is mishandled in the (1) rndis_query_response, (2) rndis_set_response, or (3) usb_net_handle_dataout function.(CVE-2016-2538) - The ne2000_receive function in the NE2000 NIC emulation support (hw/net/ne2000.c) in QEMU before 2.5.1 allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via crafted values for the PSTART and PSTOP registers, involving ring buffer control.(CVE-2016-2841) - QEMU, when built with the Pseudo Random Number Generator (PRNG) back-end support, allows local guest OS users to cause a denial of service (process crash) via an entropy request, which triggers arbitrary stack based allocation and memory corruption.(CVE-2016-2858) - Buffer overflow in the stellaris_enet_receive function in hw/net/stellaris_enet.c in QEMU, when the Stellaris ethernet controller is configured to accept large packets, allows remote attackers to cause a denial of service (QEMU crash) via a large packet.(CVE-2016-4001) - Buffer overflow in the mipsnet_receive function in hw/net/mipsnet.c in QEMU, when the guest NIC is configured to accept large packets, allows remote attackers to cause a denial of service (memory corruption and QEMU crash) or possibly execute arbitrary code via a packet larger than 1514 bytes.(CVE-2016-4002) - The ehci_advance_state function in hw/usb/hcd-ehci.c in QEMU allows local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via a circular split isochronous transfer descriptor (siTD) list, a related issue to CVE-2015-8558.(CVE-2016-4037) - The vmsvga_fifo_run function in hw/display/vmware_vga.c in QEMU allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a VGA command.(CVE-2016-4453) - The vmsvga_fifo_read_raw function in hw/display/vmware_vga.c in QEMU allows local guest OS administrators to obtain sensitive host memory information or cause a denial of service (QEMU process crash) by changing FIFO registers and issuing a VGA command, which triggers an out-of-bounds read.(CVE-2016-4454) - The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a zero length for the current fragment length.(CVE-2016-6834) - The vmxnet_tx_pkt_parse_headers function in hw/net/vmxnet_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (buffer over-read) by leveraging failure to check IP header length.(CVE-2016-6835) - The vmxnet3_complete_packet function in hw/net/vmxnet3.c in QEMU (aka Quick Emulator) allows local guest OS administrators to obtain sensitive host memory information by leveraging failure to initialize the txcq_descr object.(CVE-2016-6836) - Integer overflow in the net_tx_pkt_init function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (QEMU process crash) via the maximum fragmentation count, which triggers an unchecked multiplication and NULL pointer dereference.(CVE-2016-6888) - Directory traversal vulnerability in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local guest OS administrators to access host files outside the export path via a .. (dot dot) in an unspecified string.(CVE-2016-7116) - The pvscsi_ring_pop_req_descr function in hw/scsi/vmw_pvscsi.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit process IO loop to the ring size.(CVE-2016-7421) - The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator) does not properly limit the buffer descriptor count when transmitting packets, which allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags.(CVE-2016-7908) - The pcnet_rdra_addr function in hw/net/pcnet.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0.(CVE-2016-7909) - The xhci_ring_fetch function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit the number of link Transfer Request Blocks (TRB) to process.(CVE-2016-8576) - The serial_update_parameters function in hw/char/serial.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base.(CVE-2016-8669) - The intel_hda_xfer function in hw/audio/intel-hda.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via an entry with the same value for buffer length and pointer position.(CVE-2016-8909) - The rtl8139_cplus_transmit function in hw/net/rtl8139.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) by leveraging failure to limit the ring descriptor count.(CVE-2016-8910) - Memory leak in the v9fs_xattrcreate function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (memory consumption and QEMU process crash) via a large number of Txattrcreate messages with the same fid number.(CVE-2016-9102) - The v9fs_xattrcreate function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local guest OS administrators to obtain sensitive host heap memory information by reading xattribute values before writing to them.(CVE-2016-9103) - Multiple integer overflows in the (1) v9fs_xattr_read and (2) v9fs_xattr_write functions in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allow local guest OS administrators to cause a denial of service (QEMU process crash) via a crafted offset, which triggers an out-of-bounds access.(CVE-2016-9104) - Memory leak in the v9fs_link function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (memory consumption) via vectors involving a reference to the source fid object.(CVE-2016-9105) - Memory leak in the v9fs_write function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (memory consumption) by leveraging failure to free an IO vector.(CVE-2016-9106) - Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a last seen 2020-05-06 modified 2020-04-15 plugin id 135559 published 2020-04-15 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/135559 title EulerOS 2.0 SP3 : qemu-kvm (EulerOS-SA-2020-1430) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-678.NASL description Multiple vulnerabilities have been found in QEMU : CVE-2016-8576 Quick Emulator (Qemu) built with the USB xHCI controller emulation support is vulnerable to an infinite loop issue. It could occur while processing USB command ring in last seen 2020-03-17 modified 2016-10-26 plugin id 94257 published 2016-10-26 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/94257 title Debian DLA-678-1 : qemu security update NASL family SuSE Local Security Checks NASL id OPENSUSE-2017-5.NASL description This updates xen to version 4.4.4_06 to fix the following issues : - An unprivileged user in a guest could gain guest could escalate privilege to that of the guest kernel, if it had could invoke the instruction emulator. Only 64-bit x86 HVM guest were affected. Linux guest have not been vulnerable. (boo#1016340, CVE-2016-10013) - An unprivileged user in a 64 bit x86 guest could gain information from the host, crash the host or gain privilege of the host (boo#1009107, CVE-2016-9383) - An unprivileged guest process could (unintentionally or maliciously) obtain or ocorrupt sensitive information of other programs in the same guest. Only x86 HVM guests have been affected. The attacker needs to be able to trigger the Xen instruction emulator. (boo#1000106, CVE-2016-7777) - A guest on x86 systems could read small parts of hypervisor stack data (boo#1012651, CVE-2016-9932) - A malicious guest kernel could hang or crash the host system (boo#1014298, CVE-2016-10024) - A malicious guest administrator could escalate their privilege to that of the host. Only affects x86 HVM guests using qemu older version 1.6.0 or using the qemu-xen-traditional. (boo#1011652, CVE-2016-9637) - An unprivileged guest user could escalate privilege to that of the guest administrator on x86 HVM guests, especially on Intel CPUs (boo#1009100, CVE-2016-9386) - An unprivileged guest user could escalate privilege to that of the guest administrator (on AMD CPUs) or crash the system (on Intel CPUs) on 32-bit x86 HVM guests. Only guest operating systems that allowed a new task to start in VM86 mode were affected. (boo#1009103, CVE-2016-9382) - A malicious guest administrator could crash the host on x86 PV guests only (boo#1009104, CVE-2016-9385) - A malicious guest administrator could get privilege of the host emulator process on x86 HVM guests. (boo#1009109, CVE-2016-9381) - A vulnerability in pygrub allowed a malicious guest administrator to obtain the contents of sensitive host files, or even delete those files (boo#1009111, CVE-2016-9379, CVE-2016-9380) - A privileged guest user could cause an infinite loop in the RTL8139 ethernet emulation to consume CPU cycles on the host, causing a DoS situation (boo#1007157, CVE-2016-8910) - A privileged guest user could cause an infinite loop in the intel-hda sound emulation to consume CPU cycles on the host, causing a DoS situation (boo#1007160, CVE-2016-8909) - A privileged guest user could cause a crash of the emulator process on the host by exploiting a divide by zero vulnerability of the JAZZ RC4030 chipset emulation (boo#1005004 CVE-2016-8667) - A privileged guest user could cause a crash of the emulator process on the host by exploiting a divide by zero issue of the 16550A UART emulation (boo#1005005, CVE-2016-8669) - A privileged guest user could cause an infinite loop in the USB xHCI emulation, causing a DoS situation on the host (boo#1004016, CVE-2016-8576) - A privileged guest user could cause an infinite loop in the ColdFire Fash Ethernet Controller emulation, causing a DoS situation on the host (boo#1003030, CVE-2016-7908) - A privileged guest user could cause an infinite loop in the AMD PC-Net II emulation, causing a DoS situation on the host (boo#1003032, CVE-2016-7909) - Cause a reload of clvm in the block-dmmd script to avoid a blocking lvchange call (boo#1002496) - Also unplug SCSI disks in qemu-xen-traditional for upstream unplug protocol. Before a single SCSI storage devices added to HVM guests could appear multiple times in the guest. (boo#953518) - Fix a kernel panic / black screen when trying to boot a XEN kernel on some UEFI firmwares (boo#1000195) last seen 2020-06-05 modified 2017-01-03 plugin id 96253 published 2017-01-03 reporter This script is Copyright (C) 2017-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/96253 title openSUSE Security Update : xen (openSUSE-2017-5) NASL family SuSE Local Security Checks NASL id OPENSUSE-2016-1451.NASL description This update for qemu fixes the following issues : - Patch queue updated from https://gitlab.suse.de/virtualization/qemu.git SLE12-SP1 - Change package post script udevadm trigger calls to be device specific (bsc#1002116) - Address various security/stability issues - Fix OOB access in xlnx.xpx-ethernetlite emulation (CVE-2016-7161 bsc#1001151) - Fix OOB access in VMware SVGA emulation (CVE-2016-7170 bsc#998516) - Fix DOS in USB xHCI emulation (CVE-2016-7466 bsc#1000345) - Fix DOS in Vmware pv scsi interface (CVE-2016-7421 bsc#999661) - Fix DOS in ColdFire Fast Ethernet Controller emulation (CVE-2016-7908 bsc#1002550) - Fix DOS in USB xHCI emulation (CVE-2016-8576 bsc#1003878) - Fix DOS in virtio-9pfs (CVE-2016-8578 bsc#1003894) - Fix DOS in virtio-9pfs (CVE-2016-9105 bsc#1007494) - Fix DOS in virtio-9pfs (CVE-2016-8577 bsc#1003893) - Plug data leak in virtio-9pfs interface (CVE-2016-9103 bsc#1007454) - Fix DOS in virtio-9pfs interface (CVE-2016-9102 bsc#1007450) - Fix DOS in virtio-9pfs (CVE-2016-9106 bsc#1007495) - Fix DOS in 16550A UART emulation (CVE-2016-8669 bsc#1004707) - Fix DOS in PC-Net II emulation (CVE-2016-7909 bsc#1002557) - Fix DOS in PRO100 emulation (CVE-2016-9101 bsc#1007391) - Fix DOS in RTL8139 emulation (CVE-2016-8910 bsc#1006538) - Fix DOS in Intel HDA controller emulation (CVE-2016-8909 bsc#1006536) - Fix DOS in virtio-9pfs (CVE-2016-9104 bsc#1007493) - Fix DOS in JAZZ RC4030 emulation (CVE-2016-8667 bsc#1004702) - Fix case of disk corruption with migration due to improper internal state tracking (bsc#996524) This update was imported from the SUSE:SLE-12-SP1:Update update project. last seen 2020-06-05 modified 2016-12-13 plugin id 95757 published 2016-12-13 reporter This script is Copyright (C) 2016-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/95757 title openSUSE Security Update : qemu (openSUSE-2016-1451) NASL family Fedora Local Security Checks NASL id FEDORA_2017-12394E2CC7.NASL description - CVE-2016-6836: vmxnet: Information leakage in vmxnet3_complete_packet (bz #1366370) - CVE-2016-7909: pcnet: Infinite loop in pcnet_rdra_addr (bz #1381196) - CVE-2016-7994: virtio-gpu: memory leak in resource_create_2d (bz #1382667) - CVE-2016-8577: 9pfs: host memory leakage in v9fs_read (bz #1383286) - CVE-2016-8578: 9pfs: potential NULL dereferencein 9pfs routines (bz #1383292) - CVE-2016-8668: OOB buffer access in rocker switch emulation (bz #1384898) - CVE-2016-8669: divide by zero error in serial_update_parameters (bz #1384911) - CVE-2016-8910: rtl8139: infinite loop while transmit in C+ mode (bz #1388047) - CVE-2016-8909: intel-hda: infinite loop in dma buffer stream (bz #1388053) - Infinite loop vulnerability in a9_gtimer_update (bz #1388300) - CVE-2016-9101: eepro100: memory leakage at device unplug (bz #1389539) - CVE-2016-9103: 9pfs: information leakage via xattr (bz #1389643) - CVE-2016-9102: 9pfs: memory leakage when creating extended attribute (bz #1389551) - CVE-2016-9104: 9pfs: integer overflow leading to OOB access (bz #1389687) - CVE-2016-9105: 9pfs: memory leakage in v9fs_link (bz #1389704) - CVE-2016-9106: 9pfs: memory leakage in v9fs_write (bz #1389713) - CVE-2016-9381: xen: incautious about shared ring processing (bz #1397385) - CVE-2016-9921: Divide by zero vulnerability in cirrus_do_copy (bz #1399054) - CVE-2016-9776: infinite loop while receiving data in mcf_fec_receive (bz #1400830) - CVE-2016-9845: information leakage in virgl_cmd_get_capset_info (bz #1402247) - CVE-2016-9846: virtio-gpu: memory leakage while updating cursor data (bz #1402258) - CVE-2016-9907: usbredir: memory leakage when destroying redirector (bz #1402266) - CVE-2016-9911: usb: ehci: memory leakage in ehci_init_transfer (bz #1402273) - CVE-2016-9913: 9pfs: memory leakage via proxy/handle callbacks (bz #1402277) - CVE-2016-10028: virtio-gpu-3d: OOB access while reading virgl capabilities (bz #1406368) - CVE-2016-9908: virtio-gpu: information leakage in virgl_cmd_get_capset (bz #1402263) - CVE-2016-9912: virtio-gpu: memory leakage when destroying gpu resource (bz #1402285) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2017-01-26 plugin id 96782 published 2017-01-26 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/96782 title Fedora 24 : 2:qemu (2017-12394e2cc7) NASL family SuSE Local Security Checks NASL id OPENSUSE-2017-4.NASL description This updates xen to version 4.5.5 to fix the following issues : - An unprivileged user in a guest could gain guest could escalate privilege to that of the guest kernel, if it had could invoke the instruction emulator. Only 64-bit x86 HVM guest were affected. Linux guest have not been vulnerable. (boo#1016340, CVE-2016-10013) - An unprivileged user in a 64 bit x86 guest could gain information from the host, crash the host or gain privilege of the host (boo#1009107, CVE-2016-9383) - An unprivileged guest process could (unintentionally or maliciously) obtain or ocorrupt sensitive information of other programs in the same guest. Only x86 HVM guests have been affected. The attacker needs to be able to trigger the Xen instruction emulator. (boo#1000106, CVE-2016-7777) - A guest on x86 systems could read small parts of hypervisor stack data (boo#1012651, CVE-2016-9932) - A malicious guest kernel could hang or crash the host system (boo#1014298, CVE-2016-10024) - The epro100 emulated network device caused a memory leak in the host when unplugged in the guest. A privileged user in the guest could use this to cause a DoS on the host or potentially crash the guest process on the host (boo#1013668, CVE-2016-9101) - The ColdFire Fast Ethernet Controller was vulnerable to an infinite loop that could be trigged by a privileged user in the guest, leading to DoS (boo#1013657, CVE-2016-9776) - A malicious guest administrator could escalate their privilege to that of the host. Only affects x86 HVM guests using qemu older version 1.6.0 or using the qemu-xen-traditional. (boo#1011652, CVE-2016-9637) - An unprivileged guest user could escalate privilege to that of the guest administrator on x86 HVM guests, especially on Intel CPUs (boo#1009100, CVE-2016-9386) - An unprivileged guest user could escalate privilege to that of the guest administrator (on AMD CPUs) or crash the system (on Intel CPUs) on 32-bit x86 HVM guests. Only guest operating systems that allowed a new task to start in VM86 mode were affected. (boo#1009103, CVE-2016-9382) - A malicious guest administrator could crash the host on x86 PV guests only (boo#1009104, CVE-2016-9385) - An unprivileged guest user was able to crash the guest. (boo#1009108, CVE-2016-9377, CVE-2016-9378) - A malicious guest administrator could get privilege of the host emulator process on x86 HVM guests. (boo#1009109, CVE-2016-9381) - A vulnerability in pygrub allowed a malicious guest administrator to obtain the contents of sensitive host files, or even delete those files (boo#1009111, CVE-2016-9379, CVE-2016-9380) - A privileged guest user could cause an infinite loop in the RTL8139 ethernet emulation to consume CPU cycles on the host, causing a DoS situation (boo#1007157, CVE-2016-8910) - A privileged guest user could cause an infinite loop in the intel-hda sound emulation to consume CPU cycles on the host, causing a DoS situation (boo#1007160, CVE-2016-8909) - A privileged guest user could cause a crash of the emulator process on the host by exploiting a divide by zero vulnerability of the JAZZ RC4030 chipset emulation (boo#1005004 CVE-2016-8667) - A privileged guest user could cause a crash of the emulator process on the host by exploiting a divide by zero issue of the 16550A UART emulation (boo#1005005, CVE-2016-8669) - A privileged guest user could cause a memory leak in the USB EHCI emulation, causing a DoS situation on the host (boo#1003870, CVE-2016-7995) - A privileged guest user could cause an infinite loop in the USB xHCI emulation, causing a DoS situation on the host (boo#1004016, CVE-2016-8576) - A privileged guest user could cause an infinite loop in the ColdFire Fash Ethernet Controller emulation, causing a DoS situation on the host (boo#1003030, CVE-2016-7908) - A privileged guest user could cause an infinite loop in the AMD PC-Net II emulation, causing a DoS situation on the host (boo#1003032, CVE-2016-7909) - Cause a reload of clvm in the block-dmmd script to avoid a blocking lvchange call (boo#1002496) last seen 2020-06-05 modified 2017-01-03 plugin id 96252 published 2017-01-03 reporter This script is Copyright (C) 2017-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/96252 title openSUSE Security Update : xen (openSUSE-2017-4) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-1497.NASL description Several vulnerabilities were found in qemu, a fast processor emulator : CVE-2015-8666 Heap-based buffer overflow in QEMU when built with the Q35-chipset-based PC system emulator CVE-2016-2198 NULL pointer dereference in ehci_caps_write in the USB EHCI support that may result in denial of service CVE-2016-6833 Use after free while writing in the vmxnet3 device that could be used to cause a denial of service CVE-2016-6835 Buffer overflow in vmxnet_tx_pkt_parse_headers() in vmxnet3 device that could result in denial of service CVE-2016-8576 Infinite loop vulnerability in xhci_ring_fetch in the USB xHCI support CVE-2016-8667 / CVE-2016-8669 Divide by zero errors in set_next_tick in the JAZZ RC4030 chipset emulator, and in serial_update_parameters of some serial devices, that could result in denial of service CVE-2016-9602 Improper link following with VirtFS CVE-2016-9603 Heap buffer overflow via vnc connection in the Cirrus CLGD 54xx VGA emulator support CVE-2016-9776 Infinite loop while receiving data in the ColdFire Fast Ethernet Controller emulator CVE-2016-9907 Memory leakage in the USB redirector usb-guest support CVE-2016-9911 Memory leakage in ehci_init_transfer in the USB EHCI support CVE-2016-9914 / CVE-2016-9915 / CVE-2016-9916 Plan 9 File System (9pfs): add missing cleanup operation in FileOperations, in the handle backend and in the proxy backend driver CVE-2016-9921 / CVE-2016-9922 Divide by zero in cirrus_do_copy in the Cirrus CLGD 54xx VGA Emulator support CVE-2016-10155 Memory leak in hw/watchdog/wdt_i6300esb.c allowing local guest OS privileged users to cause a denial of service via a large number of device unplug operations. CVE-2017-2615 / CVE-2017-2620 / CVE-2017-18030 / CVE-2018-5683 / CVE-2017-7718 Out-of-bounds access issues in the Cirrus CLGD 54xx VGA emulator support, that could result in denial of service CVE-2017-5525 / CVE-2017-5526 Memory leakage issues in the ac97 and es1370 device emulation CVE-2017-5579 Most memory leakage in the 16550A UART emulation CVE-2017-5667 Out-of-bounds access during multi block SDMA transfer in the SDHCI emulation support. CVE-2017-5715 Mitigations against the Spectre v2 vulnerability. For more information please refer to https://www.qemu.org/2018/01/04/spectre/ CVE-2017-5856 Memory leak in the MegaRAID SAS 8708EM2 Host Bus Adapter emulation support CVE-2017-5973 / CVE-2017-5987 / CVE-2017-6505 Infinite loop issues in the USB xHCI, in the transfer mode register of the SDHCI protocol, and the USB ohci_service_ed_list CVE-2017-7377 9pfs: host memory leakage via v9fs_create CVE-2017-7493 Improper access control issues in the host directory sharing via 9pfs support. CVE-2017-7980 Heap-based buffer overflow in the Cirrus VGA device that could allow local guest OS users to execute arbitrary code or cause a denial of service CVE-2017-8086 9pfs: host memory leakage via v9pfs_list_xattr CVE-2017-8112 Infinite loop in the VMWare PVSCSI emulation CVE-2017-8309 / CVE-2017-8379 Host memory leakage issues via the audio capture buffer and the keyboard input event handlers CVE-2017-9330 Infinite loop due to incorrect return value in USB OHCI that may result in denial of service CVE-2017-9373 / CVE-2017-9374 Host memory leakage during hot unplug in IDE AHCI and USB emulated devices that could result in denial of service CVE-2017-9503 NULL pointer dereference while processing megasas command CVE-2017-10806 Stack buffer overflow in USB redirector CVE-2017-10911 Xen disk may leak stack data via response ring CVE-2017-11434 Out-of-bounds read while parsing Slirp/DHCP options CVE-2017-14167 Out-of-bounds access while processing multiboot headers that could result in the execution of arbitrary code CVE-2017-15038 9pfs: information disclosure when reading extended attributes CVE-2017-15289 Out-of-bounds write access issue in the Cirrus graphic adaptor that could result in denial of service CVE-2017-16845 Information leak in the PS/2 mouse and keyboard emulation support that could be exploited during instance migration CVE-2017-18043 Integer overflow in the macro ROUND_UP (n, d) that could result in denial of service CVE-2018-7550 Incorrect handling of memory during multiboot that could may result in execution of arbitrary code For Debian 8 last seen 2020-06-01 modified 2020-06-02 plugin id 117351 published 2018-09-07 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/117351 title Debian DLA-1497-1 : qemu security update (Spectre) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2017-2392.NASL description An update for qemu-kvm-rhev is now available for RHEV 4.X RHEV-H 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. KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. The following packages have been upgraded to a later upstream version: qemu-kvm-rhev (2.9.0). (BZ#1387372, BZ#1387600, BZ#1400962) Security Fix(es) : * A stack-based buffer overflow flaw was found in the Quick Emulator (QEMU) built with the Network Block Device (NBD) client support. The flaw could occur while processing server last seen 2020-06-01 modified 2020-06-02 plugin id 102158 published 2017-08-03 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/102158 title RHEL 7 : qemu-kvm-rhev (RHSA-2017:2392) NASL family Fedora Local Security Checks NASL id FEDORA_2017-B953D4D3A4.NASL description - CVE-2016-6836: vmxnet: Information leakage in vmxnet3_complete_packet (bz #1366370) - CVE-2016-7909: pcnet: Infinite loop in pcnet_rdra_addr (bz #1381196) - CVE-2016-7994: virtio-gpu: memory leak in resource_create_2d (bz #1382667) - CVE-2016-8577: 9pfs: host memory leakage in v9fs_read (bz #1383286) - CVE-2016-8578: 9pfs: potential NULL dereferencein 9pfs routines (bz #1383292) - CVE-2016-8668: OOB buffer access in rocker switch emulation (bz #1384898) - CVE-2016-8669: divide by zero error in serial_update_parameters (bz #1384911) - CVE-2016-8909: intel-hda: infinite loop in dma buffer stream (bz #1388053) - Infinite loop vulnerability in a9_gtimer_update (bz #1388300) - CVE-2016-9101: eepro100: memory leakage at device unplug (bz #1389539) - CVE-2016-9103: 9pfs: information leakage via xattr (bz #1389643) - CVE-2016-9102: 9pfs: memory leakage when creating extended attribute (bz #1389551) - CVE-2016-9104: 9pfs: integer overflow leading to OOB access (bz #1389687) - CVE-2016-9105: 9pfs: memory leakage in v9fs_link (bz #1389704) - CVE-2016-9106: 9pfs: memory leakage in v9fs_write (bz #1389713) - CVE-2016-9381: xen: incautious about shared ring processing (bz #1397385) - CVE-2016-9921: Divide by zero vulnerability in cirrus_do_copy (bz #1399054) - CVE-2016-9776: infinite loop while receiving data in mcf_fec_receive (bz #1400830) - CVE-2016-9845: information leakage in virgl_cmd_get_capset_info (bz #1402247) - CVE-2016-9846: virtio-gpu: memory leakage while updating cursor data (bz #1402258) - CVE-2016-9907: usbredir: memory leakage when destroying redirector (bz #1402266) - CVE-2016-9911: usb: ehci: memory leakage in ehci_init_transfer (bz #1402273) - CVE-2016-9913: 9pfs: memory leakage via proxy/handle callbacks (bz #1402277) - CVE-2016-10028: virtio-gpu-3d: OOB access while reading virgl capabilities (bz #1406368) - CVE-2016-9908: virtio-gpu: information leakage in virgl_cmd_get_capset (bz #1402263) - CVE-2016-9912: virtio-gpu: memory leakage when destroying gpu resource (bz #1402285) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2017-01-23 plugin id 96677 published 2017-01-23 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/96677 title Fedora 25 : 2:qemu (2017-b953d4d3a4) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-3067-1.NASL description xen was updated to version 4.7.1 to fix 17 security issues. These security issues were fixed : - CVE-2016-9637: ioport array overflow allowing a malicious guest administrator can escalate their privilege to that of the host (bsc#1011652). - CVE-2016-9386: x86 null segments were not always treated as unusable allowing an unprivileged guest user program to elevate its privilege to that of the guest operating system. Exploit of this vulnerability is easy on Intel and more complicated on AMD (bsc#1009100). - CVE-2016-9382: x86 task switch to VM86 mode was mis-handled, allowing a unprivileged guest process to escalate its privilege to that of the guest operating system on AMD hardware. On Intel hardware a malicious unprivileged guest process can crash the guest (bsc#1009103). - CVE-2016-9385: x86 segment base write emulation lacked canonical address checks, allowing a malicious guest administrator to crash the host (bsc#1009104). - CVE-2016-9384: Guest 32-bit ELF symbol table load leaking host data to unprivileged guest users (bsc#1009105). - CVE-2016-9383: The x86 64-bit bit test instruction emulation was broken, allowing a guest to modify arbitrary memory leading to arbitray code execution (bsc#1009107). - CVE-2016-9377: x86 software interrupt injection was mis-handled, allowing an unprivileged guest user to crash the guest (bsc#1009108). - CVE-2016-9378: x86 software interrupt injection was mis-handled, allowing an unprivileged guest user to crash the guest (bsc#1009108) - CVE-2016-9381: Improper processing of shared rings allowing guest administrators take over the qemu process, elevating their privilege to that of the qemu process (bsc#1009109). - CVE-2016-9379: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111). - CVE-2016-9380: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111). - CVE-2016-7777: Xen did not properly honor CR0.TS and CR0.EM, which allowed local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it (bsc#1000106). - CVE-2016-8910: The rtl8139_cplus_transmit function in hw/net/rtl8139.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) by leveraging failure to limit the ring descriptor count (bsc#1007157). - CVE-2016-8667: The rc4030_write function in hw/dma/rc4030.c in allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via a large interval timer reload value (bsc#1005004). - CVE-2016-8669: The serial_update_parameters function in hw/char/serial.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base (bsc#1005005). - CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec.c did not properly limit the buffer descriptor count when transmitting packets, which allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags (bsc#1003030). - CVE-2016-7909: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1003032). 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 95709 published 2016-12-12 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95709 title SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2016:3067-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-3273-1.NASL description This update for xen fixes several issues. These security issues were fixed : - CVE-2016-9637: ioport array overflow allowing a malicious guest administrator can escalate their privilege to that of the host (bsc#1011652) - CVE-2016-9386: x86 null segments were not always treated as unusable allowing an unprivileged guest user program to elevate its privilege to that of the guest operating system. Exploit of this vulnerability is easy on Intel and more complicated on AMD (bsc#1009100) - CVE-2016-9382: x86 task switch to VM86 mode was mis-handled, allowing a unprivileged guest process to escalate its privilege to that of the guest operating system on AMD hardware. On Intel hardware a malicious unprivileged guest process can crash the guest (bsc#1009103) - CVE-2016-9383: The x86 64-bit bit test instruction emulation was broken, allowing a guest to modify arbitrary memory leading to arbitray code execution (bsc#1009107) - CVE-2016-9381: Improper processing of shared rings allowing guest administrators take over the qemu process, elevating their privilege to that of the qemu process (bsc#1009109) - CVE-2016-9380: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111) - CVE-2016-9379: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111) - CVE-2016-7777: Xen did not properly honor CR0.TS and CR0.EM, which allowed local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it (bsc#1000106) - CVE-2016-8910: The rtl8139_cplus_transmit function in hw/net/rtl8139.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) by leveraging failure to limit the ring descriptor count (bsc#1007157) - CVE-2016-8909: The intel_hda_xfer function in hw/audio/intel-hda.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via an entry with the same value for buffer length and pointer position (bsc#1007160) - CVE-2016-8667: The rc4030_write function in hw/dma/rc4030.c in allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via a large interval timer reload value (bsc#1005004) - CVE-2016-8669: The serial_update_parameters function in hw/char/serial.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base (bsc#1005005) - CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec.c did not properly limit the buffer descriptor count when transmitting packets, which allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags (bsc#1003030) - CVE-2016-7909: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1003032) 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 96150 published 2016-12-27 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/96150 title SUSE SLES11 Security Update : xen (SUSE-SU-2016:3273-1) NASL family Fedora Local Security Checks NASL id FEDORA_2016-7B6FBFF620.NASL description several qemu security fixes Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2016-11-21 plugin id 95006 published 2016-11-21 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95006 title Fedora 25 : xen (2016-7b6fbff620) NASL family Fedora Local Security Checks NASL id FEDORA_2016-0D1A8EE35B.NASL description several qemu security fixes Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2016-11-10 plugin id 94656 published 2016-11-10 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/94656 title Fedora 24 : xen (2016-0d1a8ee35b) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-2431.NASL description According to the versions of the qemu-kvm packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a last seen 2020-05-08 modified 2019-12-04 plugin id 131585 published 2019-12-04 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/131585 title EulerOS 2.0 SP2 : qemu-kvm (EulerOS-SA-2019-2431) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-3174-1.NASL description This update for xen fixes several issues. These security issues were fixed : - CVE-2016-9637: ioport array overflow allowing a malicious guest administrator can escalate their privilege to that of the host (bsc#1011652) - CVE-2016-9386: x86 null segments were not always treated as unusable allowing an unprivileged guest user program to elevate its privilege to that of the guest operating system. Exploit of this vulnerability is easy on Intel and more complicated on AMD (bsc#1009100) - CVE-2016-9382: x86 task switch to VM86 mode was mis-handled, allowing a unprivileged guest process to escalate its privilege to that of the guest operating system on AMD hardware. On Intel hardware a malicious unprivileged guest process can crash the guest (bsc#1009103) - CVE-2016-9385: x86 segment base write emulation lacked canonical address checks, allowing a malicious guest administrator to crash the host (bsc#1009104) - CVE-2016-9383: The x86 64-bit bit test instruction emulation was broken, allowing a guest to modify arbitrary memory leading to arbitray code execution (bsc#1009107) - CVE-2016-9381: Improper processing of shared rings allowing guest administrators take over the qemu process, elevating their privilege to that of the qemu process (bsc#1009109) - CVE-2016-9380: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111) - CVE-2016-9379: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111) - CVE-2016-7777: Xen did not properly honor CR0.TS and CR0.EM, which allowed local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it (bsc#1000106) - CVE-2016-8910: The rtl8139_cplus_transmit function in hw/net/rtl8139.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) by leveraging failure to limit the ring descriptor count (bsc#1007157) - CVE-2016-8909: The intel_hda_xfer function in hw/audio/intel-hda.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via an entry with the same value for buffer length and pointer position (bsc#1007160) - CVE-2016-8667: The rc4030_write function in hw/dma/rc4030.c in allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via a large interval timer reload value (bsc#1005004) - CVE-2016-8669: The serial_update_parameters function in hw/char/serial.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base (bsc#1005005) - CVE-2016-8576: The xhci_ring_fetch function in hw/usb/hcd-xhci.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit the number of link Transfer Request Blocks (TRB) to process (bsc#1004016) - CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec.c did not properly limit the buffer descriptor count when transmitting packets, which allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags (bsc#1003030) - CVE-2016-7909: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1003032) 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 96032 published 2016-12-20 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/96032 title SUSE SLES11 Security Update : xen (SUSE-SU-2016:3174-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-3083-1.NASL description This update for xen to version 4.5.5 fixes several issues. These security issues were fixed : - CVE-2016-9637: ioport array overflow allowing a malicious guest administrator can escalate their privilege to that of the host (bsc#1011652) - CVE-2016-9386: x86 null segments were not always treated as unusable allowing an unprivileged guest user program to elevate its privilege to that of the guest operating system. Exploit of this vulnerability is easy on Intel and more complicated on AMD (bsc#1009100) - CVE-2016-9382: x86 task switch to VM86 mode was mis-handled, allowing a unprivileged guest process to escalate its privilege to that of the guest operating system on AMD hardware. On Intel hardware a malicious unprivileged guest process can crash the guest (bsc#1009103) - CVE-2016-9385: x86 segment base write emulation lacked canonical address checks, allowing a malicious guest administrator to crash the host (bsc#1009104) - CVE-2016-9383: The x86 64-bit bit test instruction emulation was broken, allowing a guest to modify arbitrary memory leading to arbitray code execution (bsc#1009107) - CVE-2016-9378: x86 software interrupt injection was mis-handled, allowing an unprivileged guest user to crash the guest (bsc#1009108) - CVE-2016-9377: x86 software interrupt injection was mis-handled, allowing an unprivileged guest user to crash the guest (bsc#1009108) - CVE-2016-9381: Improper processing of shared rings allowing guest administrators take over the qemu process, elevating their privilege to that of the qemu process (bsc#1009109) - CVE-2016-9380: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111) - CVE-2016-9379: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111) - CVE-2016-7777: Xen did not properly honor CR0.TS and CR0.EM, which allowed local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it (bsc#1000106) - CVE-2016-8910: The rtl8139_cplus_transmit function in hw/net/rtl8139.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) by leveraging failure to limit the ring descriptor count (bsc#1007157) - CVE-2016-8909: The intel_hda_xfer function in hw/audio/intel-hda.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via an entry with the same value for buffer length and pointer position (bsc#1007160). - CVE-2016-8667: The rc4030_write function in hw/dma/rc4030.c in allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via a large interval timer reload value (bsc#1005004) - CVE-2016-8669: The serial_update_parameters function in hw/char/serial.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base (bsc#1005005) - CVE-2016-7995: A memory leak in ehci_process_itd allowed a privileged user inside guest to DoS the host (bsc#1003870). - CVE-2016-8576: The xhci_ring_fetch function in hw/usb/hcd-xhci.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit the number of link Transfer Request Blocks (TRB) to process (bsc#1004016). - CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec.c did not properly limit the buffer descriptor count when transmitting packets, which allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags (bsc#1003030) - CVE-2016-7909: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1003032) 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 95761 published 2016-12-13 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95761 title SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2016:3083-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-2879-1.NASL description This update for qemu to version 2.6.2 fixes the several issues. These security issues were fixed : - CVE-2016-7161: Heap-based buffer overflow in the .receive callback of xlnx.xps-ethernetlite in QEMU (aka Quick Emulator) allowed attackers to execute arbitrary code on the QEMU host via a large ethlite packet (bsc#1001151). - CVE-2016-7170: OOB stack memory access when processing svga command (bsc#998516). - CVE-2016-7466: xhci memory leakage during device unplug (bsc#1000345). - CVE-2016-7422: NULL pointer dereference in virtqueu_map_desc (bsc#1000346). - CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec.c did not properly limit the buffer descriptor count when transmitting packets, which allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags (bsc#1002550). - CVE-2016-7995: Memory leak in ehci_process_itd (bsc#1003612). - CVE-2016-8576: The xhci_ring_fetch function in hw/usb/hcd-xhci.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit the number of link Transfer Request Blocks (TRB) to process (bsc#1003878). - CVE-2016-8578: The v9fs_iov_vunmarshal function in fsdev/9p-iov-marshal.c allowed local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) by sending an empty string parameter to a 9P operation (bsc#1003894). - CVE-2016-9105: Memory leakage in v9fs_link (bsc#1007494). - CVE-2016-8577: Memory leak in the v9fs_read function in hw/9pfs/9p.c allowed local guest OS administrators to cause a denial of service (memory consumption) via vectors related to an I/O read operation (bsc#1003893). - CVE-2016-9106: Memory leakage in v9fs_write (bsc#1007495). - CVE-2016-8669: The serial_update_parameters function in hw/char/serial.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base (bsc#1004707). - CVE-2016-7909: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1002557). - CVE-2016-9101: eepro100 memory leakage whern unplugging a device (bsc#1007391). - CVE-2016-8668: The rocker_io_writel function in hw/net/rocker/rocker.c allowed local guest OS administrators to cause a denial of service (out-of-bounds read and QEMU process crash) by leveraging failure to limit DMA buffer size (bsc#1004706). - CVE-2016-8910: The rtl8139_cplus_transmit function in hw/net/rtl8139.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) by leveraging failure to limit the ring descriptor count (bsc#1006538). - CVE-2016-8909: The intel_hda_xfer function in hw/audio/intel-hda.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via an entry with the same value for buffer length and pointer position (bsc#1006536). - CVE-2016-7994: Memory leak in virtio_gpu_resource_create_2d (bsc#1003613). - CVE-2016-9104: Integer overflow leading to OOB access in 9pfs (bsc#1007493). - CVE-2016-8667: The rc4030_write function in hw/dma/rc4030.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via a large interval timer reload value (bsc#1004702). - CVE-2016-7907: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1002549). 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 95283 published 2016-11-23 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95283 title SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2016:2879-1) NASL family SuSE Local Security Checks NASL id OPENSUSE-2016-1504.NASL description This update for qemu to version 2.6.2 fixes the several issues. These security issues were fixed : - CVE-2016-7161: Heap-based buffer overflow in the .receive callback of xlnx.xps-ethernetlite in QEMU (aka Quick Emulator) allowed attackers to execute arbitrary code on the QEMU host via a large ethlite packet (bsc#1001151). - CVE-2016-7170: OOB stack memory access when processing svga command (bsc#998516). - CVE-2016-7466: xhci memory leakage during device unplug (bsc#1000345). - CVE-2016-7422: NULL pointer dereference in virtqueu_map_desc (bsc#1000346). - CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec.c did not properly limit the buffer descriptor count when transmitting packets, which allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags (bsc#1002550). - CVE-2016-7995: Memory leak in ehci_process_itd (bsc#1003612). - CVE-2016-8576: The xhci_ring_fetch function in hw/usb/hcd-xhci.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit the number of link Transfer Request Blocks (TRB) to process (bsc#1003878). - CVE-2016-8578: The v9fs_iov_vunmarshal function in fsdev/9p-iov-marshal.c allowed local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) by sending an empty string parameter to a 9P operation (bsc#1003894). - CVE-2016-9105: Memory leakage in v9fs_link (bsc#1007494). - CVE-2016-8577: Memory leak in the v9fs_read function in hw/9pfs/9p.c allowed local guest OS administrators to cause a denial of service (memory consumption) via vectors related to an I/O read operation (bsc#1003893). - CVE-2016-9106: Memory leakage in v9fs_write (bsc#1007495). - CVE-2016-8669: The serial_update_parameters function in hw/char/serial.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base (bsc#1004707). - CVE-2016-7909: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1002557). - CVE-2016-9101: eepro100 memory leakage whern unplugging a device (bsc#1007391). - CVE-2016-8668: The rocker_io_writel function in hw/net/rocker/rocker.c allowed local guest OS administrators to cause a denial of service (out-of-bounds read and QEMU process crash) by leveraging failure to limit DMA buffer size (bsc#1004706). - CVE-2016-8910: The rtl8139_cplus_transmit function in hw/net/rtl8139.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) by leveraging failure to limit the ring descriptor count (bsc#1006538). - CVE-2016-8909: The intel_hda_xfer function in hw/audio/intel-hda.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via an entry with the same value for buffer length and pointer position (bsc#1006536). - CVE-2016-7994: Memory leak in virtio_gpu_resource_create_2d (bsc#1003613). - CVE-2016-9104: Integer overflow leading to OOB access in 9pfs (bsc#1007493). - CVE-2016-8667: The rc4030_write function in hw/dma/rc4030.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via a large interval timer reload value (bsc#1004702). - CVE-2016-7907: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1002549). These non-security issues were fixed : - Change kvm-supported.txt to be per-architecture documentation, stored in the package documentation directory of each per-arch package (bsc#1005353). - Update support doc to include current ARM64 (AArch64) support stance (bsc#1005374). - Fix migration failure when snapshot also has been done (bsc#1008148). - Change package post script udevadm trigger calls to be device specific (bsc#1002116). - Add qmp-commands.txt documentation file back in. It was inadvertently dropped. - Add an x86 cpu option (l3-cache) to specify that an L3 cache is present and another option (cpuid-0xb) to enable the cpuid 0xb leaf (bsc#1007769). This update was imported from the SUSE:SLE-12-SP2:Update update project. last seen 2020-06-05 modified 2016-12-27 plugin id 96129 published 2016-12-27 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/96129 title openSUSE Security Update : qemu (openSUSE-2016-1504) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3261-1.NASL description Zhenhao Hong discovered that QEMU incorrectly handled the Virtio GPU device. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-10028, CVE-2016-10029) Li Qiang discovered that QEMU incorrectly handled the 6300esb watchdog. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2016-10155) Li Qiang discovered that QEMU incorrectly handled the i.MX Fast Ethernet Controller. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7907) It was discovered that QEMU incorrectly handled the JAZZ RC4030 device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2016-8667) It was discovered that QEMU incorrectly handled the 16550A UART device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2016-8669) It was discovered that QEMU incorrectly handled the shared rings when used with Xen. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. (CVE-2016-9381) Jann Horn discovered that QEMU incorrectly handled VirtFS directory sharing. A privileged attacker inside the guest could use this issue to access files on the host file system outside of the shared directory and possibly escalate their privileges. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2016-9602) Gerd Hoffmann discovered that QEMU incorrectly handled the Cirrus VGA device when being used with a VNC connection. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2016-9603) It was discovered that QEMU incorrectly handled the ColdFire Fast Ethernet Controller. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2016-9776) Li Qiang discovered that QEMU incorrectly handled the Virtio GPU device. An attacker inside the guest could use this issue to cause QEMU to leak contents of host memory. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-9845, CVE-2016-9908) Li Qiang discovered that QEMU incorrectly handled the Virtio GPU device. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-9846, CVE-2016-9912, CVE-2017-5552, CVE-2017-5578, CVE-2017-5857) Li Qiang discovered that QEMU incorrectly handled the USB redirector. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-9907) Li Qiang discovered that QEMU incorrectly handled USB EHCI emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2016-9911) Li Qiang discovered that QEMU incorrectly handled VirtFS directory sharing. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2016-9913, CVE-2016-9914, CVE-2016-9915, CVE-2016-9916) Qinghao Tang, Li Qiang, and Jiangxin discovered that QEMU incorrectly handled the Cirrus VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2016-9921, CVE-2016-9922) Wjjzhang and Li Qiang discovered that QEMU incorrectly handled the Cirrus VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2017-2615) It was discovered that QEMU incorrectly handled the Cirrus VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2017-2620) It was discovered that QEMU incorrectly handled VNC connections. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-2633) Li Qiang discovered that QEMU incorrectly handled the ac97 audio device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-5525) Li Qiang discovered that QEMU incorrectly handled the es1370 audio device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-5526) Li Qiang discovered that QEMU incorrectly handled the 16550A UART device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-5579) Jiang Xin discovered that QEMU incorrectly handled SDHCI device emulation. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2017-5667) Li Qiang discovered that QEMU incorrectly handled the MegaRAID SAS device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-5856) Li Qiang discovered that QEMU incorrectly handled the CCID Card device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-5898) Li Qiang discovered that QEMU incorrectly handled USB xHCI controller emulation. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-5973) Jiang Xin and Wjjzhang discovered that QEMU incorrectly handled SDHCI device emulation. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-5987) Li Qiang discovered that QEMU incorrectly handled USB OHCI controller emulation. A privileged attacker inside the guest could use this issue to cause QEMU to hang, resulting in a denial of service. (CVE-2017-6505). 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 99581 published 2017-04-21 reporter Ubuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/99581 title Ubuntu 14.04 LTS / 16.04 LTS / 16.10 : qemu vulnerabilities (USN-3261-1) NASL family Fedora Local Security Checks NASL id FEDORA_2016-DA6B1D277B.NASL description several qemu security fixes Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2016-11-11 plugin id 94690 published 2016-11-11 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/94690 title Fedora 23 : xen (2016-da6b1d277b) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-2988-1.NASL description This update for qemu fixes the following issues : - Patch queue updated from https://gitlab.suse.de/virtualization/qemu.git SLE12-SP1 - Change package post script udevadm trigger calls to be device specific (bsc#1002116) - Address various security/stability issues - Fix OOB access in xlnx.xpx-ethernetlite emulation (CVE-2016-7161 bsc#1001151) - Fix OOB access in VMware SVGA emulation (CVE-2016-7170 bsc#998516) - Fix DOS in USB xHCI emulation (CVE-2016-7466 bsc#1000345) - Fix DOS in Vmware pv scsi interface (CVE-2016-7421 bsc#999661) - Fix DOS in ColdFire Fast Ethernet Controller emulation (CVE-2016-7908 bsc#1002550) - Fix DOS in USB xHCI emulation (CVE-2016-8576 bsc#1003878) - Fix DOS in virtio-9pfs (CVE-2016-8578 bsc#1003894) - Fix DOS in virtio-9pfs (CVE-2016-9105 bsc#1007494) - Fix DOS in virtio-9pfs (CVE-2016-8577 bsc#1003893) - Plug data leak in virtio-9pfs interface (CVE-2016-9103 bsc#1007454) - Fix DOS in virtio-9pfs interface (CVE-2016-9102 bsc#1007450) - Fix DOS in virtio-9pfs (CVE-2016-9106 bsc#1007495) - Fix DOS in 16550A UART emulation (CVE-2016-8669 bsc#1004707) - Fix DOS in PC-Net II emulation (CVE-2016-7909 bsc#1002557) - Fix DOS in PRO100 emulation (CVE-2016-9101 bsc#1007391) - Fix DOS in RTL8139 emulation (CVE-2016-8910 bsc#1006538) - Fix DOS in Intel HDA controller emulation (CVE-2016-8909 bsc#1006536) - Fix DOS in virtio-9pfs (CVE-2016-9104 bsc#1007493) - Fix DOS in JAZZ RC4030 emulation (CVE-2016-8667 bsc#1004702) - Fix case of disk corruption with migration due to improper internal state tracking (bsc#996524) 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 95537 published 2016-12-05 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95537 title SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2016:2988-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-2902-1.NASL description This update for kvm fixes the following issues : - Address various security/stability issues - Fix OOB access in xlnx.xpx-ethernetlite emulation (CVE-2016-7161 bsc#1001151) - Fix OOB access in VMware SVGA emulation (CVE-2016-7170 bsc#998516) - Fix DOS in ColdFire Fast Ethernet Controller emulation (CVE-2016-7908 bsc#1002550) - Fix DOS in USB xHCI emulation (CVE-2016-8576 bsc#1003878) - Fix DOS in virtio-9pfs (CVE-2016-8578 bsc#1003894) - Fix DOS in virtio-9pfs (CVE-2016-9105 bsc#1007494) - Fix DOS in virtio-9pfs (CVE-2016-8577 bsc#1003893) - Plug data leak in virtio-9pfs interface (CVE-2016-9103 bsc#1007454) - Fix DOS in virtio-9pfs interface (CVE-2016-9102 bsc#1007450) - Fix DOS in virtio-9pfs (CVE-2016-9106 bsc#1007495) - Fix DOS in 16550A UART emulation (CVE-2016-8669 bsc#1004707) - Fix DOS in PC-Net II emulation (CVE-2016-7909 bsc#1002557) - Fix DOS in PRO100 emulation (CVE-2016-9101 bsc#1007391) - Fix DOS in RTL8139 emulation (CVE-2016-8910 bsc#1006538) - Fix DOS in Intel HDA controller emulation (CVE-2016-8909 bsc#1006536) - Fix DOS in virtio-9pfs (CVE-2016-9104 bsc#1007493) - Fix DOS in JAZZ RC4030 emulation (CVE-2016-8667 bsc#1004702) - Patch queue updated from https://gitlab.suse.de/virtualization/qemu.git SLE11-SP4 - Remove semi-contradictory and now determined erroneous statement in kvm-supported.txt regarding not running ntp in kvm guest when kvm-clock is used. It is now recommended to use ntp in guest in this case. 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 95316 published 2016-11-25 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95316 title SUSE SLES11 Security Update : kvm (SUSE-SU-2016:2902-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-3156-1.NASL description This update for xen fixes several issues. These security issues were fixed : - CVE-2016-9637: ioport array overflow allowing a malicious guest administrator can escalate their privilege to that of the host (bsc#1011652) - CVE-2016-9386: x86 null segments were not always treated as unusable allowing an unprivileged guest user program to elevate its privilege to that of the guest operating system. Exploit of this vulnerability is easy on Intel and more complicated on AMD (bsc#1009100) - CVE-2016-9382: x86 task switch to VM86 mode was mis-handled, allowing a unprivileged guest process to escalate its privilege to that of the guest operating system on AMD hardware. On Intel hardware a malicious unprivileged guest process can crash the guest (bsc#1009103) - CVE-2016-9385: x86 segment base write emulation lacked canonical address checks, allowing a malicious guest administrator to crash the host (bsc#1009104) - CVE-2016-9383: The x86 64-bit bit test instruction emulation was broken, allowing a guest to modify arbitrary memory leading to arbitray code execution (bsc#1009107) - CVE-2016-9381: Improper processing of shared rings allowing guest administrators take over the qemu process, elevating their privilege to that of the qemu process (bsc#1009109) - CVE-2016-9380: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111) - CVE-2016-9379: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111) - CVE-2016-7777: Xen did not properly honor CR0.TS and CR0.EM, which allowed local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it (bsc#1000106) - CVE-2016-8910: The rtl8139_cplus_transmit function in hw/net/rtl8139.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) by leveraging failure to limit the ring descriptor count (bsc#1007157) - CVE-2016-8909: The intel_hda_xfer function in hw/audio/intel-hda.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via an entry with the same value for buffer length and pointer position (bsc#1007160) - CVE-2016-8667: The rc4030_write function in hw/dma/rc4030.c in allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via a large interval timer reload value (bsc#1005004) - CVE-2016-8669: The serial_update_parameters function in hw/char/serial.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base (bsc#1005005) - CVE-2016-8576: The xhci_ring_fetch function in hw/usb/hcd-xhci.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit the number of link Transfer Request Blocks (TRB) to process (bsc#1004016) - CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec.c did not properly limit the buffer descriptor count when transmitting packets, which allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags (bsc#1003030) - CVE-2016-7909: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1003032) 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 95822 published 2016-12-14 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95822 title SUSE SLES12 Security Update : xen (SUSE-SU-2016:3156-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-3044-1.NASL description xen was updated to fix several security issues. These security issues were fixed : - CVE-2016-9637: ioport array overflow allowing a malicious guest administrator can escalate their privilege to that of the host (bsc#1011652). - CVE-2016-9386: x86 null segments were not always treated as unusable allowing an unprivileged guest user program to elevate its privilege to that of the guest operating system. Exploit of this vulnerability is easy on Intel and more complicated on AMD (bsc#1009100) - CVE-2016-9382: x86 task switch to VM86 mode was mis-handled, allowing a unprivileged guest process to escalate its privilege to that of the guest operating system on AMD hardware. On Intel hardware a malicious unprivileged guest process can crash the guest (bsc#1009103) - CVE-2016-9383: The x86 64-bit bit test instruction emulation was broken, allowing a guest to modify arbitrary memory leading to arbitray code execution (bsc#1009107) - CVE-2016-9381: Improper processing of shared rings allowing guest administrators take over the qemu process, elevating their privilege to that of the qemu process (bsc#1009109) - CVE-2016-9380: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111) - CVE-2016-9379: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111) - CVE-2016-7777: Xen did not properly honor CR0.TS and CR0.EM, which allowed local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it (bsc#1000106) - CVE-2016-8910: The rtl8139_cplus_transmit function in hw/net/rtl8139.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) by leveraging failure to limit the ring descriptor count (bsc#1007157) - CVE-2016-8667: The rc4030_write function in hw/dma/rc4030.c in allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via a large interval timer reload value (bsc#1005004) - CVE-2016-8669: The serial_update_parameters function in hw/char/serial.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base (bsc#1005005) - CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec.c did not properly limit the buffer descriptor count when transmitting packets, which allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags (bsc#1003030) - CVE-2016-7909: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1003032) - CVE-2016-6351: The esp_do_dma function in hw/scsi/esp.c, when built with ESP/NCR53C9x controller emulation support, allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the host via vectors involving DMA read into ESP command buffer (bsc#990843) 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 95624 published 2016-12-08 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95624 title SUSE SLES11 Security Update : xen (SUSE-SU-2016:3044-1) NASL family SuSE Local Security Checks NASL id OPENSUSE-2016-1477.NASL description xen was updated to version 4.7.1 to fix 17 security issues. These security issues were fixed : - CVE-2016-9637: ioport array overflow allowing a malicious guest administrator can escalate their privilege to that of the host (bsc#1011652). - CVE-2016-9386: x86 null segments were not always treated as unusable allowing an unprivileged guest user program to elevate its privilege to that of the guest operating system. Exploit of this vulnerability is easy on Intel and more complicated on AMD (bsc#1009100). - CVE-2016-9382: x86 task switch to VM86 mode was mis-handled, allowing a unprivileged guest process to escalate its privilege to that of the guest operating system on AMD hardware. On Intel hardware a malicious unprivileged guest process can crash the guest (bsc#1009103). - CVE-2016-9385: x86 segment base write emulation lacked canonical address checks, allowing a malicious guest administrator to crash the host (bsc#1009104). - CVE-2016-9384: Guest 32-bit ELF symbol table load leaking host data to unprivileged guest users (bsc#1009105). - CVE-2016-9383: The x86 64-bit bit test instruction emulation was broken, allowing a guest to modify arbitrary memory leading to arbitray code execution (bsc#1009107). - CVE-2016-9377: x86 software interrupt injection was mis-handled, allowing an unprivileged guest user to crash the guest (bsc#1009108). - CVE-2016-9378: x86 software interrupt injection was mis-handled, allowing an unprivileged guest user to crash the guest (bsc#1009108) - CVE-2016-9381: Improper processing of shared rings allowing guest administrators take over the qemu process, elevating their privilege to that of the qemu process (bsc#1009109). - CVE-2016-9379: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111). - CVE-2016-9380: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111). - CVE-2016-7777: Xen did not properly honor CR0.TS and CR0.EM, which allowed local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it (bsc#1000106). - CVE-2016-8910: The rtl8139_cplus_transmit function in hw/net/rtl8139.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) by leveraging failure to limit the ring descriptor count (bsc#1007157). - CVE-2016-8667: The rc4030_write function in hw/dma/rc4030.c in allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via a large interval timer reload value (bsc#1005004). - CVE-2016-8669: The serial_update_parameters function in hw/char/serial.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base (bsc#1005005). - CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec.c did not properly limit the buffer descriptor count when transmitting packets, which allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags (bsc#1003030). - CVE-2016-7909: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1003032). These non-security issues were fixed : - bsc#1004981: Xen RPM didn last seen 2020-06-05 modified 2016-12-16 plugin id 95910 published 2016-12-16 reporter This script is Copyright (C) 2016-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/95910 title openSUSE Security Update : xen (openSUSE-2016-1477)
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References
- http://www.openwall.com/lists/oss-security/2016/10/15/5
- http://www.openwall.com/lists/oss-security/2016/10/14/9
- http://www.securityfocus.com/bid/93563
- http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
- https://security.gentoo.org/glsa/201611-11
- https://access.redhat.com/errata/RHSA-2017:2408
- https://access.redhat.com/errata/RHSA-2017:2392
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=3592fe0c919cf27a81d8e9f9b4f269553418bb01