Out-of-Bounds 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-DEBIAN11-XEN-533098
- published5 Jul 2017
- disclosed5 Jul 2017
Introduced: 5 Jul 2017
CVE-2017-10921 (opens in a new tab)How to fix?
Upgrade Debian:11 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:11 relevant fixed versions and status.
The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and GNTMAP_host_map mapping, which allows guest OS users to cause a denial of service (count mismanagement and memory corruption) or obtain privileged host OS access, aka XSA-224 bug 2.
References
- https://security-tracker.debian.org/tracker/CVE-2017-10921
- https://xenbits.xen.org/xsa/advisory-224.html
- http://www.debian.org/security/2017/dsa-3969
- https://security.gentoo.org/glsa/201708-03
- https://security.gentoo.org/glsa/201710-17
- http://www.securitytracker.com/id/1038734
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-10921