Vulnerabilities > CVE-2017-8904 - Unspecified vulnerability in XEN 4.8.0/4.8.1
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
Xen through 4.8.x mishandles the "contains segment descriptors" property during GNTTABOP_transfer (aka guest transfer) operations, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-214.
Nessus
NASL family Fedora Local Security Checks NASL id FEDORA_2017-5AE70AC6A5.NASL description xen: various flaws (#1447345) x86: 64bit PV guest breakout via pagetable use-after-mode-change [XSA-213] grant transfer allows PV guest to elevate privileges [XSA-214] 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 2017-05-16 plugin id 100189 published 2017-05-16 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/100189 title Fedora 25 : xen (2017-5ae70ac6a5) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2017-0116.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : - BUILDINFO: xen commit=74b662e79bc874fe8ad8a93d2891e6569c380004 - BUILDINFO: QEMU upstream commit=8bff6989bd0bafcc0ddf859c23ce6a2ff21a80ff - BUILDINFO: QEMU traditional commit=346fdd7edd73f8287d0d0a2bab9c67b71bc6b8ba - BUILDINFO: IPXE commit=9a93db3f0947484e30e753bbd61a10b17336e20e - BUILDINFO: SeaBIOS commit=7d9cbe613694924921ed1a6f8947d711c5832eee - gnttab: __gnttab_unmap_common_complete is all-or-nothing (Jan Beulich) [Orabug: 26288614] - gnttab: correct logic to get page references during map requests (George Dunlap) [Orabug: 26288614] - gnttab: never create host mapping unless asked to (Jan Beulich) - gnttab: Fix handling of dev_bus_addr during unmap (George Dunlap) - x86/shadow: Hold references for the duration of emulated writes (Andrew Cooper) [Orabug: 26288568] - x86/mm: disallow page stealing from HVM domains (Jan Beulich) - guest_physmap_remove_page needs its return value checked (Jan Beulich) [Orabug: 26288602] - xen/memory: Fix return value handing of guest_remove_page (Andrew Cooper) [Orabug: 26288602] - evtchn: avoid NULL derefs (Jan Beulich) [Orabug: 26288583] - gnttab: correct maptrack table accesses (Jan Beulich) [Orabug: 26288557] - gnttab: Avoid potential double-put of maptrack entry (George Dunlap) - gnttab: fix unmap pin accounting race (Jan Beulich) [Orabug: 26288557] - IOMMU: handle IOMMU mapping and unmapping failures (Quan Xu) [Orabug: 26288557] - xen/disk: don last seen 2020-06-01 modified 2020-06-02 plugin id 101195 published 2017-07-03 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/101195 title OracleVM 3.4 : xen (OVMSA-2017-0116) NASL family Fedora Local Security Checks NASL id FEDORA_2017-77CA39D254.NASL description xen: various flaws (#1447345) x86: 64bit PV guest breakout via pagetable use-after-mode-change [XSA-213] grant transfer allows PV guest to elevate privileges [XSA-214] 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 2017-07-17 plugin id 101659 published 2017-07-17 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/101659 title Fedora 26 : xen (2017-77ca39d254) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2017-0153.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2017-0153 for details. last seen 2020-06-01 modified 2020-06-02 plugin id 103830 published 2017-10-13 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/103830 title OracleVM 3.4 : xen (OVMSA-2017-0153) NASL family Fedora Local Security Checks NASL id FEDORA_2017-C9D71F0860.NASL description xen: various flaws (#1447345) x86: 64bit PV guest breakout via pagetable use-after-mode-change [XSA-213] grant transfer allows PV guest to elevate privileges [XSA-214] possible memory corruption via failsafe callback [XSA-215] 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 2017-05-16 plugin id 100198 published 2017-05-16 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/100198 title Fedora 24 : xen (2017-c9d71f0860) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2017-0142.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2017-0142 for details. last seen 2020-06-01 modified 2020-06-02 plugin id 102835 published 2017-08-30 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/102835 title OracleVM 3.4 : xen (OVMSA-2017-0142) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201705-11.NASL description The remote host is affected by the vulnerability described in GLSA-201705-11 (Xen: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Xen. Please review the CVE identifiers and Xen Security Advisory referenced below for details. Impact : A local attacker could potentially execute arbitrary code with privileges of Xen (QEMU) process on the host, gain privileges on the host system, or cause a Denial of Service condition. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 100443 published 2017-05-26 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/100443 title GLSA-201705-11 : Xen: Multiple vulnerabilities NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2018-0248.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0248 for details. last seen 2020-06-01 modified 2020-06-02 plugin id 111992 published 2018-08-20 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/111992 title OracleVM 3.4 : xen (OVMSA-2018-0248) (Bunker Buster) (Foreshadow) (Meltdown) (POODLE) (Spectre) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-964.NASL description Multiple vulnerabilities have been discovered in the Xen hypervisor. The Common Vulnerabilities and Exposures project identifies the following problems : CVE-2016-9932 (XSA-200) CMPXCHG8B emulation allows local HVM guest OS users to obtain sensitive information from host stack memory. CVE-2017-7995 Description Xen checks access permissions to MMIO ranges only after accessing them, allowing host PCI device space memory reads. CVE-2017-8903 (XSA-213) Xen mishandles page tables after an IRET hypercall which can lead to arbitrary code execution on the host OS. The vulnerability is only exposed to 64-bit PV guests. CVE-2017-8904 (XSA-214) Xen mishandles the last seen 2020-03-17 modified 2017-06-02 plugin id 100575 published 2017-06-02 reporter This script is Copyright (C) 2017-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/100575 title Debian DLA-964-1 : xen security update
References
- http://www.securityfocus.com/bid/98428
- http://www.securityfocus.com/bid/98428
- http://www.securitytracker.com/id/1038387
- http://www.securitytracker.com/id/1038387
- https://blog.xenproject.org/2017/05/02/updates-on-xsa-213-xsa-214-and-xsa-215/
- https://blog.xenproject.org/2017/05/02/updates-on-xsa-213-xsa-214-and-xsa-215/
- https://security.gentoo.org/glsa/201705-11
- https://security.gentoo.org/glsa/201705-11
- https://xenbits.xen.org/xsa/advisory-214.html
- https://xenbits.xen.org/xsa/advisory-214.html