Insecure Inherited Permissions in Mozilla Firefox and Firefox ESR - CVE-2023-4052

Vulnerability identifier: #VU78852

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-4052

CWE-ID: CWE-277

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to Firefox uninstaller follows symbolic links when removing files from directory created by the application updater that is writable by non-privileged users. A local user can create symbolic links to critical files on the system and delete them when uninstalling Firefox.

Note, the vulnerability affects Windows installations only.

Mozilla Firefox
Firefox ESR
Gentoo Linux
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Software Development Kit 12
SUSE CaaS Platform
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE Linux Enterprise Micro
SUSE Enterprise Storage
SUSE Linux Enterprise Server 12 SP2 BCL
Slackware Linux
SUSE Linux Enterprise Server 15 SP1 LTSS
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP3 LTSS
Desktop Applications Module
SUSE Package Hub 15
openSUSE Leap
IBM Cloud Pak for Multicloud Management
Mozilla Thunderbird
mozilla-firefox
MozillaFirefox-debugsource
MozillaFirefox-translations-common
MozillaFirefox
MozillaFirefox-devel
MozillaFirefox-debuginfo
MozillaFirefox-translations-other
MozillaThunderbird-debuginfo
MozillaThunderbird
MozillaThunderbird-translations-common
MozillaThunderbird-debugsource
MozillaThunderbird-translations-other
MozillaFirefox-branding-upstream
mail-client/thunderbird
mail-client/thunderbird-bin

Install updates from vendor's website.

Mozilla Firefox - update to 116.0
Firefox ESR - update to 115.1.0
IBM Cloud Pak for Multicloud Management - update to 2.3.8
Mozilla Thunderbird - update to 115.1.0
mozilla-firefox - update to 115.1.0esr
MozillaFirefox-debugsource - addressed in versions 115.1.0-112.173.1, 115.1.0-150000.150.97.1, 115.1.0-150200.152.99.1
MozillaFirefox-translations-common - addressed in versions 115.1.0-112.173.1, 115.1.0-150000.150.97.1, 115.1.0-150200.152.99.1
MozillaFirefox - addressed in versions 115.1.0-112.173.1, 115.1.0-150000.150.97.1, 115.1.0-150200.152.99.1
MozillaFirefox-devel - addressed in versions 115.1.0-112.173.1, 115.1.0-150000.150.97.1, 115.1.0-150200.152.99.1
MozillaFirefox-debuginfo - addressed in versions 115.1.0-112.173.1, 115.1.0-150000.150.97.1, 115.1.0-150200.152.99.1
MozillaFirefox-translations-other - addressed in versions 115.1.0-150000.150.97.1, 115.1.0-150200.152.99.1
MozillaThunderbird-debuginfo - update to 115.1.0-150200.8.127.1
MozillaThunderbird - update to 115.1.0-150200.8.127.1
MozillaThunderbird-translations-common - update to 115.1.0-150200.8.127.1
MozillaThunderbird-debugsource - update to 115.1.0-150200.8.127.1
MozillaThunderbird-translations-other - update to 115.1.0-150200.8.127.1
MozillaFirefox-branding-upstream - update to 115.1.0-150200.152.99.1
mail-client/thunderbird - update to 115.7.0
mail-client/thunderbird-bin - update to 115.7.0

• https://www.mozilla.org/en-US/security/advisories/mfsa2023-29/
• https://www.mozilla.org/en-US/security/advisories/mfsa2023-31/

• Multiple vulnerabilities in Mozilla Firefox
• SUSE update for MozillaFirefox
• SUSE update for MozillaFirefox
• SUSE update for MozillaFirefox
• Multiple vulnerabilities in Mozilla Thunderbird 115
• Slackware Linux update for mozilla-firefox
• SUSE update for MozillaThunderbird
• Gentoo update for Mozilla Thunderbird
• Multiple vulnerabilities in IBM Cloud Pak for Multicloud Management