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


Severity

Recommended
low

Based on Debian security rating

    Threat Intelligence

    EPSS
    1% (84th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-DEBIANUNSTABLE-LIBX11-339127
  • published 25 Sep 2018
  • disclosed 24 Aug 2018

How to fix?

Upgrade Debian:unstable 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:unstable 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).