Use-after-free in Mozilla Firefox and Firefox for Android - CVE-2023-5172

Vulnerability identifier: #VU81131

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-2023-5172

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 in Ion Engine. A remote attacker can trick the victim to open a specially crafted web page, 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.

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

Install updates from vendor's website.

Mozilla Firefox - update to 118.0
Firefox for Android - update to 118.0
www-client/firefox - update to 104
firefox (Ubuntu package) - addressed in versions 118.0.1+build1-0ubuntu0.20.04.1, 118.0.2+build2-0ubuntu0.20.04.1
firefox - addressed in versions 118.0-1.fc37, 118.0-1.fc38, 118.0-1.fc39
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/mfsa2023-41/

• Multiple vulnerabilities in Mozilla Firefox and Firefox ESR
• Ubuntu update for firefox
• Fedora 39 update for firefox
• Fedora 38 update for firefox
• Fedora 37 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