Integer Overflow or Wraparound Affecting tigervnc-server-module package, versions <0:1.8.0-24.amzn2.0.6


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.27% (51st percentile)

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  • Snyk IDSNYK-AMZN2-TIGERVNCSERVERMODULE-10692414
  • published11 Jul 2025
  • disclosed17 Jun 2025

Introduced: 17 Jun 2025

CVE-2025-49176  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 tigervnc-server-module to version 0:1.8.0-24.amzn2.0.6 or higher.
This issue was patched in ALAS2-2025-2917.

NVD Description

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

A flaw was found in the Big Requests extension. The request length is multiplied by 4 before checking against the maximum allowed size, potentially causing an integer overflow and bypassing the size check.

References

CVSS Base Scores

version 3.1