Out-of-Bounds The advisory has been revoked - it doesn't affect any version of package xen (opens in a new tab)
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-UBUNTU1904-XEN-658116
- published12 Dec 2017
- disclosed12 Dec 2017
Introduced: 12 Dec 2017
CVE-2017-17563 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:19.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Ubuntu.
An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging an incorrect mask for reference-count overflow checking in shadow mode.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-17563
- https://support.citrix.com/article/CTX232096
- https://xenbits.xen.org/xsa/advisory-249.html
- https://www.debian.org/security/2018/dsa-4112
- https://lists.debian.org/debian-lts-announce/2018/01/msg00003.html
- https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html
- https://security-tracker.debian.org/tracker/CVE-2017-17563
- https://security.gentoo.org/glsa/201801-14
- http://www.openwall.com/lists/oss-security/2017/12/12/2
- http://www.securityfocus.com/bid/102169
- http://www.securitytracker.com/id/1040769