CVE-2025-0239 Affecting firefox-x11 package, versions <0:128.6.0-1.el9_5


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ALMALINUX9-FIREFOXX11-8617973
  • published11 Jan 2025
  • disclosed8 Jan 2025

Introduced: 8 Jan 2025

NewCVE-2025-0239  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 firefox-x11 to version 0:128.6.0-1.el9_5 or higher.
This issue was patched in ALSA-2025:0080.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-x11 package and not the firefox-x11 package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site. This vulnerability affects Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird < 128.6.

CVSS Scores

version 3.1