Use After Free Affecting gdm package, versions [,3.29.90)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-UNMANAGED-GDM-2370046
  • published26 Jan 2022
  • disclosed14 Aug 2018
  • creditUnknown

Introduced: 14 Aug 2018

CVE-2018-14424  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade gdm to version 3.29.90 or higher.

Overview

Affected versions of this package are vulnerable to Use After Free. The daemon in GDM through 3.29.1 does not properly unexport display objects from its D-Bus interface when they are destroyed, which allows a local attacker to trigger a use-after-free via a specially crafted sequence of D-Bus method calls, resulting in a denial of service or potential code execution.

CVSS Base Scores

version 3.1