Access Restriction Bypass Affecting xen package, versions <4.6.0-1ubuntu4.1
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-367297
- published19 Apr 2016
- disclosed19 Apr 2016
Introduced: 19 Apr 2016
CVE-2016-3960 (opens in a new tab)How to fix?
Upgrade Ubuntu:16.04 xen to version 4.6.0-1ubuntu4.1 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.
Integer overflow in the x86 shadow pagetable code in Xen allows local guest OS users to cause a denial of service (host crash) or possibly gain privileges by shadowing a superpage mapping.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-3960
- http://www.debian.org/security/2016/dsa-3554
- https://security-tracker.debian.org/tracker/CVE-2016-3960
- http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183275.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183350.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184209.html
- http://support.citrix.com/article/CTX209443
- http://xenbits.xen.org/xsa/advisory-173.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/86318
- http://www.securitytracker.com/id/1035587