CVE-2012-3494

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Summary

CVECVE-2012-3494
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2012-11-23 20:55:03 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v2.0 2.1 from [email protected]

AV:L/AC:L/Au:N/C:N/I:N/A:P

Problem Types: CWE-264 | n/a

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:L/AC:L/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Citrix Xenserver All - All All
Application Citrix Xenserver All - All All
Operating System Xen Xen 4.0.0 - All All
Operating System Xen Xen 4.0.0 - All All
Operating System Xen Xen 4.1.0 - All All
Operating System Xen Xen 4.1.0 - All All
Operating System Xen Xen 4.2.0 - All All
Operating System Xen Xen 4.2.0 - All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Security Advisory SA50530 - Citrix XenServer Denial of Service and Privilege Escalation Vulnerabilities - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Vendor Advisory
[security-announce] SUSE-SU-2012:1132-1: important: Security update for af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
[security-announce] SUSE-SU-2012:1162-1: important: Security update for af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
851139 – (CVE-2012-3494) CVE-2012-3494 kernel: xen: hypercall set_debugreg vulnerability af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com
[security-announce] SUSE-SU-2012:1129-1: important: Security update for af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
Xen 'set_debugreg' CVE-2012-3494 Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
Gentoo Linux Documentation -- Xen: Multiple vulnerabilities af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org
Security Advisory SA50472 - Xen Multiple Denial of Service and Privilege Escalation Vulnerabilities - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Vendor Advisory
[security-announce] openSUSE-SU-2012:1572-1: important: XEN: security an af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
[security-announce] SUSE-SU-2012:1135-1: important: Security update for af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
Xen set_debugreg() Hypercall Lets Local Guest Operating Systems Cause Denial of Service Conditions on the Host Operating System - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
[security-announce] openSUSE-SU-2012:1573-1: important: XEN: security an af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
Citrix XenServer Multiple Security Updates af854a3a-2127-422b-91ae-364da2661108 support.citrix.com Patch, Vendor Advisory
osvdb.org/85197 af854a3a-2127-422b-91ae-364da2661108 osvdb.org
[security-announce] openSUSE-SU-2012:1172-1: important: Security Update af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
IBM X-Force Exchange af854a3a-2127-422b-91ae-364da2661108 exchange.xforce.ibmcloud.com
Security Advisory SA51413 - SUSE update for xen - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com
[security-announce] SUSE-SU-2012:1133-1: important: Security update for af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
[security-announce] openSUSE-SU-2012:1174-1: important: Security Update af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
Debian -- Security Information -- DSA-2544-1 xen af854a3a-2127-422b-91ae-364da2661108 www.debian.org
Security Announcements - Xen af854a3a-2127-422b-91ae-364da2661108 wiki.xen.org
oss-security - Xen Security Advisory 12 (CVE-2012-3494) - hypercall set_debugreg vulnerability af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
Security Advisory SA55082 - Gentoo update for xen - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com
Xen: Multiple vulnerabilities (GLSA 201604-03) — Gentoo Security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org
[Xen-announce] Xen Security Advisory 12 (CVE-2012-3494) - hypercall set_debugreg vulnerability af854a3a-2127-422b-91ae-364da2661108 lists.xen.org
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