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Improper Input Validation Affecting libx11 package, versions <2:1.6.4-3+deb9u1

0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 1% (84th percentile)
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NVD
7.5 high
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SUSE
6.5 medium
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Red Hat
5.9 medium

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  • Snyk ID SNYK-DEBIAN9-LIBX11-339117
  • published 25 Sep 2018
  • disclosed 24 Aug 2018
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Introduced: 24 Aug 2018

CVE-2018-14598 Open this link in a new tab
CWE-20 Open this link in a new tab

How to fix?

Upgrade Debian:9 libx11 to version 2:1.6.4-3+deb9u1 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 issue was discovered in XListExtensions in ListExt.c in libX11 through 1.6.5. A malicious server can send a reply in which the first string overflows, causing a variable to be set to NULL that will be freed later on, leading to DoS (segmentation fault).

References