#VU105318 Input validation error in Mozilla products - CVE-2025-1936
Published: March 5, 2025
Vulnerability identifier: #VU105318
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-1936
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Mozilla Firefox
Firefox ESR
Firefox for Android
Mozilla Firefox
Firefox ESR
Firefox for Android
Software vendor:
Mozilla
Mozilla
Description
The vulnerability allows a remote attacker to bypass security restrictions.
The vulnerability exists due to insufficient validation of a null-byte character (e.g. %00) in the filename when retrieving local file content packaged in a ZIP archive via jar: URLs. The null and everything after it is ignored when retrieving the content from the archive, but the fake extension after the null is used to determine the type of content. A remote attacker can hide code in a web extension disguised as a safe file, such as an image.
Remediation
Install updates from vendor's website.