Spoofing attack in Mozilla products - CVE-2023-29547

Vulnerability identifier: #VU74837

CSH Severity: Low

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

CVE-ID: CVE-2023-29547

CWE-ID: CWE-451

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to insecure handling of cookies in Firefox cookie jar. When a secure cookie existed in the Firefox cookie jar an insecure cookie for the same domain could have been created, when it should have silently failed. This could have led to a desynchronization in expected results when reading from the secure cookie.

Mozilla Firefox
Firefox for Android
Firefox Focus for Android
Gentoo Linux
Ubuntu
openEuler
www-client/firefox
firefox (Ubuntu package)
firefox
firefox-debuginfo
firefox-debugsource

Install updates from vendor's website.

Mozilla Firefox - update to 112.0
Firefox for Android - update to 112.0
Firefox Focus for Android - update to 112.0
www-client/firefox - update to 104
firefox (Ubuntu package) - addressed in versions 112.0+build2-0ubuntu0.18.04.1, 112.0+build2-0ubuntu0.20.04.1, 112.0.1+build1-0ubuntu0.18.04.1, 112.0.1+build1-0ubuntu0.20.04.1, 112.0.2+build1-0ubuntu0.18.04.1, 112.0.2+build1-0ubuntu0.20.04.1
firefox - update to 128.8.0-1
firefox-debuginfo - update to 128.8.0-1
firefox-debugsource - update to 128.8.0-1

• https://www.mozilla.org/en-US/security/advisories/mfsa2023-13/

• Multiple vulnerabilities in Mozilla Firefox
• Ubuntu update for firefox
• Ubuntu update for firefox
• Ubuntu update for firefox
• Gentoo update for Mozilla Firefox
• openEuler 22.03 LTS SP4 update for firefox
• openEuler 22.03 LTS SP3 update for firefox