Security features bypass in Mozilla Firefox and Firefox ESR - CVE-2024-5692

Vulnerability identifier: #VU91732

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2024-5692

CWE-ID: CWE-254

Exploitation vector: Remote access

Exploit availability: No public exploit available

Affected software:
Mozilla Firefox
Firefox ESR
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise Micro
SUSE Enterprise Storage
Slackware Linux
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP3 LTSS
SUSE Linux Enterprise Server 15 SP4 LTSS
SUSE Linux Enterprise Desktop 15 SP4 LTSS
SUSE Package Hub 15
Desktop Applications Module
openSUSE Leap
openEuler
Oracle Solaris
Mozilla Thunderbird
mozilla-firefox
MozillaFirefox-debuginfo
MozillaFirefox-debugsource
MozillaFirefox-translations-common
MozillaFirefox-devel
MozillaFirefox
MozillaThunderbird-translations-other
MozillaThunderbird
MozillaThunderbird-debugsource
MozillaThunderbird-translations-common
MozillaThunderbird-debuginfo
MozillaFirefox-branding-upstream
MozillaFirefox-translations-other
firefox
firefox-debuginfo
firefox-debugsource

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

The vulnerability exists due to an error when parsing file names using the Save As functionality on Windows 10. A remote attacker can trick the victim into saving the file with a disallowed extension such as .url by including an invalid character in the extension.

Note, the vulnerability affects only Windows installations of Firefox.

Install updates from vendor's website.

• https://bugzilla.mozilla.org/show_bug.cgi?id=1837514
• https://bugzilla.mozilla.org/show_bug.cgi?id=1891234
• https://www.mozilla.org/security/advisories/mfsa2024-25/
• https://www.mozilla.org/security/advisories/mfsa2024-26/