Improper Input Validation Affecting xen package, versions <4.6.0-1ubuntu4.3
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-UBUNTU1604-XEN-366491
- published23 Jan 2017
- disclosed23 Jan 2017
Introduced: 23 Jan 2017
CVE-2016-9385 (opens in a new tab)How to fix?
Upgrade Ubuntu:16.04 xen to version 4.6.0-1ubuntu4.3 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 Ubuntu.
See How to fix? for Ubuntu:16.04 relevant fixed versions and status.
The x86 segment base write emulation functionality in Xen 4.4.x through 4.7.x allows local x86 PV guest OS administrators to cause a denial of service (host crash) by leveraging lack of canonical address checks.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-9385
- https://security-tracker.debian.org/tracker/CVE-2016-9385
- https://security.gentoo.org/glsa/201612-56
- https://support.citrix.com/article/CTX218775
- http://xenbits.xen.org/xsa/advisory-193.html
- http://www.securityfocus.com/bid/94472
- http://www.securitytracker.com/id/1037342