Use After Free Affecting tigervnc-icons package, versions <0:1.8.0-24.el7_9


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
1.27% (86th percentile)

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  • Snyk IDSNYK-RHEL7-TIGERVNCICONS-8016789
  • published17 Sept 2024
  • disclosed7 Feb 2023

Introduced: 7 Feb 2023

CVE-2023-0494  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:7 tigervnc-icons to version 0:1.8.0-24.el7_9 or higher.
This issue was patched in RHSA-2023:0675.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tigervnc-icons package and not the tigervnc-icons package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions.

CVSS Scores

version 3.1