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Overview

Vulnerability Score 2.1 2.1
CVE Id CVE-2012-3494
Last Modified 05 May 2014 01:12:42
Published 23 Nov 2012 03:55:03
Confidentiality Impact NONE NONE
Integrity Impact NONE NONE
Availability Impact PARTIAL PARTIAL
Access Vector LOCAL
Access Complexity LOW
Authentication NONE

CVE-2012-3494

Summary

The set_debugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when running on x86-64 systems, allows local OS guest users to cause a denial of service (host crash) by writing to the reserved bits of the DR7 debug control register.

Vulnerable Systems

Operating System

  • Xen 4.0.0

  • Xen 4.1.0

  • Xen 4.2.0

Application

  • Citrix Xenserver 6.0.2


References

MISC - https://bugzilla.redhat.com/show_bug.cgi?id=851139

XF - xen-setdebugreg-dos(78265)

SECTRACK - 1027479

BID - 55400

MLIST - [oss-security] 20120905 Xen Security Advisory 12 (CVE-2012-3494) - hypercall set_debugreg vulnerability

DEBIAN - DSA-2544

MISC - http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability

CONFIRM - http://support.citrix.com/article/CTX134708

SECUNIA - 50530

SECUNIA - 50472

OSVDB - 85197

MLIST - [Xen-announce] 20120905 Xen Security Advisory 12 (CVE-2012-3494) - hypercall set_debugreg vulnerability

SUSE - openSUSE-SU-2012:1174

SUSE - openSUSE-SU-2012:1172

SUSE - openSUSE-SU-2012:1572

SUSE - SUSE-SU-2012:1162

SUSE - SUSE-SU-2012:1135

SUSE - SUSE-SU-2012:1133

SUSE - SUSE-SU-2012:1132

SUSE - SUSE-SU-2012:1129

SECUNIA - 51413

GENTOO - GLSA-201309-24

SECUNIA - 55082

SUSE - openSUSE-SU-2012:1573

Related Patches

Novell SUSE 2012:6748 xen-201209 security update for SLE 11 SP2 i586

Novell SUSE 2012:6748 xen-201209 security update for SLE 11 SP2 x86_64

Novell SUSE 2012:8268 xen-201209 security update for SLE 10 SP4 i586

Novell SUSE 2012:8268 xen-201209 security update for SLE 10 SP4 x86_64


Last Updated: 27 May 2016 10:57:38