Security features bypass in Mozilla Firefox - CVE-2022-46873

Vulnerability identifier: #VU70153

CSH Severity: Medium

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-46873

CWE-ID: CWE-254

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to missing implementation of the unsafe-hashes CSP directive. A remote attacker can leverage such browser behavior to inject and execute potentially dangerous scripts.

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

Install updates from vendor's website.

Mozilla Firefox - update to 108.0
www-client/firefox - update to 104
firefox (Ubuntu package) - addressed in versions 108.0+build2-0ubuntu0.18.04.1, 108.0+build2-0ubuntu0.20.04.1, 108.0.1+build1-0ubuntu0.18.04.1, 108.0.1+build1-0ubuntu0.20.04.1, 108.0.2+build1-0ubuntu0.18.04.1, 108.0.2+build1-0ubuntu0.20.04.1

• https://www.mozilla.org/en-US/security/advisories/mfsa2022-51/

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