Out-of-bounds Write Affecting tigervnc-license package, versions <0:1.13.1-3.el9_3.6


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.83% (82nd percentile)

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  • Snyk IDSNYK-RHEL9-TIGERVNCLICENSE-7878604
  • published3 Sept 2024
  • disclosed16 Jan 2024

Introduced: 16 Jan 2024

CVE-2023-6816  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade RHEL:9 tigervnc-license to version 0:1.13.1-3.el9_3.6 or higher.
This issue was patched in RHSA-2024:0557.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tigervnc-license package and not the tigervnc-license package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap overflow if a bigger value was used.

CVSS Scores

version 3.1