Integer Overflow or Wraparound Affecting libx11 package, versions <2:1.6.4-3+deb9u3


0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.04% (6th percentile)
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NVD
7.8 high
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Red Hat
7.8 high
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SUSE
7.8 high

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  • Snyk ID SNYK-DEBIAN9-LIBX11-608551
  • published 26 Aug 2020
  • disclosed 11 Sep 2020

How to fix?

Upgrade Debian:9 libx11 to version 2:1.6.4-3+deb9u3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libx11 package and not the libx11 package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality, integrity as well as system availability.