NULL Pointer Dereference Affecting xorg-x11-server-source package, versions <0:1.20.4-7.amzn2.0.1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.54% (41st 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 IDSNYK-AMZN2-XORGX11SERVERSOURCE-1680466
  • published27 Sept 2021
  • disclosed25 Aug 2018

Introduced: 25 Aug 2018

CVE-2018-15861  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 xorg-x11-server-source to version 0:1.20.4-7.amzn2.0.1 or higher.
This issue was patched in ALAS2-2020-1433.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xorg-x11-server-source package and not the xorg-x11-server-source package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

Unchecked NULL pointer usage in ExprResolveLhs in xkbcomp/expr.c in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file that triggers an xkb_intern_atom failure.

CVSS Base Scores

version 3.1