Access Restriction Bypass The advisory has been revoked - it doesn't affect any version of package xen (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1210-XEN-644165
- published23 Nov 2012
- disclosed23 Nov 2012
Introduced: 23 Nov 2012
CVE-2012-3494 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:12.10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Ubuntu.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2012-3494
- http://www.debian.org/security/2012/dsa-2544
- https://security-tracker.debian.org/tracker/CVE-2012-3494
- http://security.gentoo.org/glsa/glsa-201309-24.xml
- https://security.gentoo.org/glsa/201604-03
- http://lists.xen.org/archives/html/xen-announce/2012-09/msg00000.html
- http://osvdb.org/85197
- http://support.citrix.com/article/CTX134708
- http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
- http://www.openwall.com/lists/oss-security/2012/09/05/5
- https://bugzilla.redhat.com/show_bug.cgi?id=851139
- http://secunia.com/advisories/50472
- http://secunia.com/advisories/50530
- http://secunia.com/advisories/51413
- http://secunia.com/advisories/55082
- http://www.securityfocus.com/bid/55400
- http://www.securitytracker.com/id?1027479
- https://exchange.xforce.ibmcloud.com/vulnerabilities/78265