Improper Input Validation Affecting xen package, versions <4.11.1-1
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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Start learning- Snyk IDSNYK-DEBIAN11-XEN-518446
- published8 Dec 2018
- disclosed8 Dec 2018
Introduced: 8 Dec 2018
CVE-2018-19967 (opens in a new tab)How to fix?
Upgrade Debian:11 xen to version 4.11.1-1 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 Debian.
See How to fix? for Debian:11 relevant fixed versions and status.
An issue was discovered in Xen through 4.11.x on Intel x86 platforms allowing guest OS users to cause a denial of service (host OS hang) because Xen does not work around Intel's mishandling of certain HLE transactions associated with the KACQUIRE instruction prefix.
References
- https://security-tracker.debian.org/tracker/CVE-2018-19967
- https://support.citrix.com/article/CTX239432
- https://www.debian.org/security/2019/dsa-4369
- https://xenbits.xen.org/xsa/advisory-282.html
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00057.html
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
- http://www.securityfocus.com/bid/106182
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-19967