Access Restriction Bypass The advisory has been revoked - it doesn't affect any version of package xen (opens in a new tab)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-644353
- published3 Dec 2012
- disclosed3 Dec 2012
Introduced: 3 Dec 2012
CVE-2012-3432 (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 handle_mmio function in arch/x86/hvm/io.c in the MMIO operations emulator for Xen 3.3 and 4.x, when running an HVM guest, does not properly reset certain state information between emulation cycles, which allows local guest OS users to cause a denial of service (guest OS crash) via unspecified operations on MMIO regions.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2012-3432
- http://www.debian.org/security/2012/dsa-2531
- https://security-tracker.debian.org/tracker/CVE-2012-3432
- http://security.gentoo.org/glsa/glsa-201309-24.xml
- http://lists.xen.org/archives/html/xen-devel/2012-07/msg01649.html
- http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00024.html
- http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00025.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html
- http://secunia.com/advisories/55082
- http://www.securityfocus.com/bid/54691