Use-after-free in Firefox for Android and Mozilla Firefox - CVE-2024-4771

Vulnerability identifier: #VU89553

CSH Severity: High

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2024-4771

CWE-ID: CWE-416

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing HTML content. A remote attacker can trick the victim to visit a specially crafted website, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

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

Install updates from vendor's website.

Firefox for Android - update to 126.0
Mozilla Firefox - update to 126.0
www-client/firefox - update to 104
firefox (Ubuntu package) - addressed in versions 126.0+build2-0ubuntu0.20.04.1, 126.0.1+build1-0ubuntu0.20.04.1
firefox - addressed in versions 126.0-5.fc38, 126.0-5.fc39, 126.0-5.fc40
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/mfsa2024-21/

• Multiple vulnerabilities in Mozilla Firefox
• Fedora 40 update for firefox
• Fedora 39 update for firefox
• Fedora 38 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