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Debian DSA-4803-1 Critical: Xorg-Server Input Validation Threat

debian
Calendar Grey December 4, 2020
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The recent update to the Xorg X server rectifies critical input validation vulnerabilities that could be exploited for privilege escalation on Debian systems.
Jan-Niklas Sohn discovered that the XKB extension of the Xorg X server performed incomplete input validation, which could result in privilege escalation

Summary

Jan-Niklas Sohn discovered that the XKB extension of the Xorg X server
performed incomplete input validation, which could result in privilege
escalation.

For the stable distribution (buster), these problems have been fixed in
version 2:1.20.4-1+deb10u2.

We recommend that you upgrade your xorg-server packages.

For the detailed security status of xorg-server please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/xorg-server

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/



Severity
critical
Lowest
Low
Medium
High
Critical

Package: xorg-server
CVE ID: CVE-2020-14360 CVE-2020-25712

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