Race Condition Affecting xen package, versions <4.8.1-1+deb9u3
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-DEBIAN9-XEN-367038
- published24 Aug 2017
- disclosed24 Aug 2017
Introduced: 24 Aug 2017
CVE-2017-12136 (opens in a new tab)How to fix?
Upgrade Debian:9 xen to version 4.8.1-1+deb9u3 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Debian.
See How to fix? for Debian:9 relevant fixed versions and status.
Race condition in the grant table code in Xen 4.6.x through 4.9.x allows local guest OS administrators to cause a denial of service (free list corruption and host crash) or gain privileges on the host via vectors involving maptrack free list handling.
References
- https://security-tracker.debian.org/tracker/CVE-2017-12136
- https://support.citrix.com/article/CTX225941
- http://xenbits.xen.org/xsa/advisory-228.html
- http://www.debian.org/security/2017/dsa-3969
- https://security.gentoo.org/glsa/201801-14
- http://www.openwall.com/lists/oss-security/2017/08/15/3
- https://bugzilla.redhat.com/show_bug.cgi?id=1477651
- http://www.securityfocus.com/bid/100346
- http://www.securitytracker.com/id/1039175
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-12136