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Last updated: 4/17/2014

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Vulnerability Summary for CVE-2012-0217

Original release date: 06/12/2012
Last revised: 10/10/2013
Source: US-CERT/NIST

Overview

The x86-64 kernel system-call functionality in Xen 4.1.2 and earlier, as used in Citrix XenServer 6.0.2 and earlier and other products; Oracle Solaris 11 and earlier; illumos before r13724; Joyent SmartOS before 20120614T184600Z; FreeBSD before 9.0-RELEASE-p3; NetBSD 6.0 Beta and earlier; Microsoft Windows Server 2008 R2 and R2 SP1 and Windows 7 Gold and SP1; and possibly other operating systems, when running on an Intel processor, incorrectly uses the sysret path in cases where a certain address is not a canonical address, which allows local users to gain privileges via a crafted application. NOTE: because this issue is due to incorrect use of the Intel specification, it should have been split into separate identifiers; however, there was some value in preserving the original mapping of the multi-codebase coordinated-disclosure effort to a single identifier.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 7.2 (HIGH) (AV:L/AC:L/AU:N/C:C/I:C/A:C) (legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
Per: http://technet.microsoft.com/en-us/security/bulletin/ms12-042 'This vulnerability only affects Intel x64-based versions of Windows 7 and Windows Server 2008 R2. Systems with AMD or ARM-based CPUs are not affected by this vulnerability.'

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External Source: NETBSD
Name: NetBSD-SA2012-003
External Source: FREEBSD
Name: FreeBSD-SA-12:04
External Source: MLIST
Name: [xen-announce] 20120612 Xen Security Advisory 7 (CVE-2012-0217) - PV privilege escalation
External Source: OVAL
Name: oval:org.mitre.oval:def:15596
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=813428
External Source: CONFIRM
Name: http://wiki.smartos.org/display/DOC/SmartOS+Change+Log#SmartOSChangeLog-June14%2C2012
External Source: CONFIRM
Name: http://blog.xen.org/index.php/2012/06/13/the-intel-sysret-privilege-escalation/
External Source: SECUNIA
Name: 55082
External Source: MANDRIVA
Name: MDVSA-2013:150
External Source: CONFIRM
Name: http://www.oracle.com/technetwork/topics/security/cpuoct2012-1515893.html
US-CERT Vulnerability Note: CERT
Name: TA12-164A
External Source: GENTOO
Name: GLSA-201309-24
External Source: CONFIRM
Name: http://support.citrix.com/article/CTX133161
External Source: CONFIRM
Name: http://blog.illumos.org/2012/06/14/illumos-vulnerability-patched/
External Source: MLIST
Name: [xen-devel] 20120619 Security vulnerability process, and CVE-2012-0217
External Source: CONFIRM
Name: http://smartos.org/2012/06/15/smartos-news-3/
External Source: DEBIAN
Name: DSA-2501
External Source: CONFIRM
Name: https://www.illumos.org/issues/2873
External Source: DEBIAN
Name: DSA-2508
US-CERT Vulnerability Note: CERT-VN
Name: VU#649219
External Source: MS
Name: MS12-042
Type: Advisory; Patch Information

Technical Details

Vulnerability Type (View All)