Security features bypass in Firefox ESR and Mozilla Firefox - CVE-2023-5727

Vulnerability identifier: #VU82342

CSH Severity: Medium

CVSS v4: 7.4 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-5727

CWE-ID: CWE-254

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

The vulnerability exists due to a missing executable file warning when downloading .msix, .msixbundle, .appx, and .appxbundle files. A remote attacker can trick the victim into executing the files and compromise the affected system.

The vulnerability affects Windows installations only.

Firefox ESR
Mozilla Firefox
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 ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE CaaS Platform
SUSE Manager Server
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Linux Enterprise Micro
SUSE Enterprise Storage
Slackware Linux
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS
SUSE Linux Enterprise Server 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
Anolis OS
IBM Cloud Pak for Multicloud Management
Mozilla Thunderbird
mozilla-firefox
firefox-x11
firefox-wayland
firefox-langpacks
firefox
MozillaFirefox-debuginfo
MozillaFirefox-debugsource
MozillaFirefox-devel
MozillaFirefox
MozillaFirefox-translations-common
MozillaFirefox-translations-other
MozillaFirefox-branding-upstream
mozilla-thunderbird
MozillaThunderbird-debugsource
MozillaThunderbird
MozillaThunderbird-translations-common
MozillaThunderbird-translations-other
MozillaThunderbird-debuginfo
mail-client/thunderbird
mail-client/thunderbird-bin

Install updates from vendor's website.

Firefox ESR - update to 115.4.0
Mozilla Firefox - update to 119.0
IBM Cloud Pak for Multicloud Management - update to 2.3.8
Mozilla Thunderbird - update to 115.4.0
mozilla-firefox - update to 115.4.0esr
firefox-x11 - update to 115.4.0-1
firefox-wayland - update to 115.4.0-1
firefox-langpacks - update to 115.4.0-1
firefox - update to 115.4.0-1
MozillaFirefox-debuginfo - addressed in versions 115.4.0-112.188.1, 115.4.0-150000.150.113.1, 115.4.0-150200.152.114.1, 115.5.0-112.191.1, 115.5.0-150000.150.116.1, 115.5.0-150200.152.117.1
MozillaFirefox-debugsource - addressed in versions 115.4.0-112.188.1, 115.4.0-150000.150.113.1, 115.4.0-150200.152.114.1, 115.5.0-112.191.1, 115.5.0-150000.150.116.1, 115.5.0-150200.152.117.1
MozillaFirefox-devel - addressed in versions 115.4.0-112.188.1, 115.4.0-150000.150.113.1, 115.4.0-150200.152.114.1, 115.5.0-112.191.1, 115.5.0-150000.150.116.1, 115.5.0-150200.152.117.1
MozillaFirefox - addressed in versions 115.4.0-112.188.1, 115.4.0-150000.150.113.1, 115.4.0-150200.152.114.1, 115.5.0-112.191.1, 115.5.0-150000.150.116.1, 115.5.0-150200.152.117.1
MozillaFirefox-translations-common - addressed in versions 115.4.0-112.188.1, 115.4.0-150000.150.113.1, 115.4.0-150200.152.114.1, 115.5.0-112.191.1, 115.5.0-150000.150.116.1, 115.5.0-150200.152.117.1
MozillaFirefox-translations-other - addressed in versions 115.4.0-150000.150.113.1, 115.4.0-150200.152.114.1, 115.5.0-150000.150.116.1, 115.5.0-150200.152.117.1
MozillaFirefox-branding-upstream - addressed in versions 115.4.0-150200.152.114.1, 115.5.0-150200.152.117.1
mozilla-thunderbird - update to 115.4.1
MozillaThunderbird-debugsource - update to 115.4.1-150200.8.136.1
MozillaThunderbird - update to 115.4.1-150200.8.136.1
MozillaThunderbird-translations-common - update to 115.4.1-150200.8.136.1
MozillaThunderbird-translations-other - update to 115.4.1-150200.8.136.1
MozillaThunderbird-debuginfo - update to 115.4.1-150200.8.136.1
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/mfsa2023-46/
• https://www.mozilla.org/en-US/security/advisories/mfsa2023-45/

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