CVE-2025-1942 Affecting firefox package, versions <136.0+build3-0ubuntu0.20.04.1


Severity

Recommended
medium

Based on Ubuntu security rating.

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  • Snyk IDSNYK-UBUNTU2004-FIREFOX-9295762
  • published6 Mar 2025
  • disclosed4 Mar 2025

Introduced: 4 Mar 2025

NewCVE-2025-1942  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 firefox to version 136.0+build3-0ubuntu0.20.04.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string This vulnerability affects Firefox < 136 and Thunderbird < 136.

CVSS Base Scores

version 3.1