Use After Free Affecting tigervnc package, versions <0:1.12.0-5.el9_1.1


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.9% (55th percentile)

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  • Snyk IDSNYK-ORACLE9-TIGERVNC-3316714
  • published9 Feb 2023
  • disclosed27 Mar 2023

Introduced: 9 Feb 2023

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

How to fix?

Upgrade Oracle:9 tigervnc to version 0:1.12.0-5.el9_1.1 or higher.
This issue was patched in ELSA-2023-0622.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tigervnc package and not the tigervnc package as distributed by Oracle. See How to fix? for Oracle:9 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 Base Scores

version 3.1