Improper Input Validation Affecting libx11 package, versions <2:1.6.6-1


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.82% (82nd percentile)

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  • Snyk IDSNYK-DEBIAN12-LIBX11-1551476
  • published25 Sept 2018
  • disclosed24 Aug 2018

Introduced: 24 Aug 2018

CVE-2018-14598  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Debian:12 libx11 to version 2:1.6.6-1 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:12 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).