Improper Input Validation The advisory has been revoked - it doesn't affect any version of package xen (opens in a new tab)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-644159
- published23 Nov 2012
- disclosed23 Nov 2012
Introduced: 23 Nov 2012
CVE-2012-3495 (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 physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2012-3495
- https://security-tracker.debian.org/tracker/CVE-2012-3495
- 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/msg00001.html
- http://support.citrix.com/article/CTX134708
- http://wiki.xen.org/wiki/Security_Announcements#XSA-13_hypercall_physdev_get_free_pirq_vulnerability
- http://xenbits.xen.org/hg/xen-4.1-testing.hg/rev/6779ddca8593
- 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/msg00017.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/2012/09/05/6
- http://secunia.com/advisories/51413
- http://secunia.com/advisories/55082
- http://www.securityfocus.com/bid/55406
- http://www.securitytracker.com/id?1027480