CVE-2017-8904 Affecting xen package, versions <4.4.2-0ubuntu0.14.04.11
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-UBUNTU1404-XEN-365747
- published11 May 2017
- disclosed11 May 2017
Introduced: 11 May 2017
CVE-2017-8904 (opens in a new tab)How to fix?
Upgrade Ubuntu:14.04 xen to version 4.4.2-0ubuntu0.14.04.11 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:14.04 relevant fixed versions and status.
Xen through 4.8.x mishandles the "contains segment descriptors" property during GNTTABOP_transfer (aka guest transfer) operations, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-214.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-8904
- https://blog.xenproject.org/2017/05/02/updates-on-xsa-213-xsa-214-and-xsa-215/
- https://xenbits.xen.org/xsa/advisory-214.html
- https://security-tracker.debian.org/tracker/CVE-2017-8904
- https://security.gentoo.org/glsa/201705-11
- http://www.securityfocus.com/bid/98428
- http://www.securitytracker.com/id/1038387