Input validation error in Firefox for Android and Mozilla Firefox - CVE-2024-5699

Vulnerability identifier: #VU91750

CSH Severity: Medium

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-2024-5699

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to the way Firefox handles cookie prefixes. Cookie prefixes such as __Secure were being ignored if they were not correctly capitalized - by spec they should be checked with a case-insensitive comparison. This could have resulted in the browser not correctly honoring the behaviors specified by the prefix.

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

Install updates from vendor's website.

Firefox for Android - update to 127.0
Mozilla Firefox - update to 127.0
www-client/firefox - update to 104
firefox - update to 127.0-1.fc40
firefox (Ubuntu package) - update to 127.0.2+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/mfsa2024-25/

• Multiple vulnerabilities in Mozilla Firefox and Firefox ESR
• Fedora 40 update for firefox
• Ubuntu update for firefox
• Gentoo update for Mozilla Firefox
• openEuler 22.03 LTS SP3 update for firefox
• openEuler 22.03 LTS SP4 update for firefox