Cleartext storage of sensitive information in Mozilla Firefox and Firefox for Android - CVE-2022-42931

Vulnerability identifier: #VU68410

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-42931

CWE-ID: CWE-312

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists in Firefox uses Form Manager component to store login names in an unencrypted file on disk. A local user can read contents of the file and obtain login names to different websites.

Mozilla Firefox
Firefox for Android
Gentoo Linux
Ubuntu
www-client/firefox
firefox (Ubuntu package)

Install updates from vendor's website.

Mozilla Firefox - update to 106.0
Firefox for Android - update to 106.1.0
www-client/firefox - update to 104
firefox (Ubuntu package) - addressed in versions 106.0.2+build1-0ubuntu0.18.04.1, 106.0.2+build1-0ubuntu0.20.04.1, 106.0.5+build1-0ubuntu0.18.04.1, 106.0.5+build1-0ubuntu0.20.04.1

• https://www.mozilla.org/en-US/security/advisories/mfsa2022-44/

• Multiple vulnerabilities in Mozilla Firefox and Firefox ESR
• Gentoo update for Mozilla Firefox
• Ubuntu update for firefox
• Ubuntu update for firefox