Out-of-Bounds Affecting xen package, versions <4.9.0-r7
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-ALPINE316-XEN-2845217
- published21 Jul 2020
- disclosed30 Oct 2017
Introduced: 30 Oct 2017
CVE-2017-15597 (opens in a new tab)How to fix?
Upgrade Alpine:3.16 xen to version 4.9.0-r7 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 Alpine.
See How to fix? for Alpine:3.16 relevant fixed versions and status.
An issue was discovered in Xen through 4.9.x. Grant copying code made an implication that any grant pin would be accompanied by a suitable page reference. Other portions of code, however, did not match up with that assumption. When such a grant copy operation is being done on a grant of a dying domain, the assumption turns out wrong. A malicious guest administrator can cause hypervisor memory corruption, most likely resulting in host crash and a Denial of Service. Privilege escalation and information leaks cannot be ruled out.
References
- http://www.securityfocus.com/bid/101564
- https://support.citrix.com/article/CTX229057
- http://xenbits.xen.org/xsa/advisory-236.html
- https://www.debian.org/security/2017/dsa-4050
- https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html
- http://www.openwall.com/lists/oss-security/2017/10/24/3
- http://www.securitytracker.com/id/1039653