Unintended Proxy or Intermediary in Firefox ESR and Mozilla Firefox - CVE-2025-0237

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Main Vulnerability Database Vulnerabilities #VU102424

Unintended Proxy or Intermediary in Firefox ESR and Mozilla Firefox - CVE-2025-0237

Published: January 7, 2025


Vulnerability identifier: #VU102424
CSH Severity: Low
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-0237
CWE-ID: CWE-441
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to WebChannel API does not check the sending principal but rather accepted the principal being sent when transporting data across processes. A local user can perform confused deputy attack and escalate privileges on the system.


Affected software

Firefox ESR
Mozilla Firefox
Gentoo Linux
Debian Linux
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Desktop 15 SP4
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 15 SP3
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Desktop 15
Anolis OS
SUSE Enterprise Storage
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Slackware Linux
Desktop Applications Module
SUSE Package Hub 15
openSUSE Leap
Ubuntu
openEuler
Fedora
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
www-client/firefox
mozilla-firefox
mozilla-thunderbird
firefox-esr (Debian package)
thunderbird (Debian package)
firefox
firefox-debuginfo
firefox-debugsource
firefox (Red Hat package)
thunderbird
MozillaFirefox
MozillaFirefox-devel
MozillaFirefox-debugsource
MozillaFirefox-translations-common
MozillaFirefox-debuginfo
MozillaThunderbird-translations-other
MozillaThunderbird-translations-common
MozillaThunderbird
MozillaThunderbird-debuginfo
MozillaThunderbird-debugsource
MozillaFirefox-branding-upstream
MozillaFirefox-translations-other
dev-lang/spidermonkey
mail-client/thunderbird-bin
mail-client/thunderbird
thunderbird-debuginfo
thunderbird-debugsource
thunderbird-librnp-rnp
thunderbird-wayland
firefox (Ubuntu package)
thunderbird (Ubuntu package)
Mozilla Thunderbird
Firefox for Android
Firefox Focus for Android

How to mitigate CVE-2025-0237

Install updates from vendor's website.

Firefox ESR - update to 128.6.0
Mozilla Firefox - update to 134.0
Mozilla Thunderbird - addressed in versions 128.6.0, 134.0
Firefox for Android - update to 134.0
Firefox Focus for Android - update to 134.0
www-client/firefox - update to 104
mozilla-firefox - update to 128.6.0esr
mozilla-thunderbird - update to 128.6.0esr
firefox-esr (Debian package) - update to 128.6.0esr-1~deb12u1
thunderbird (Debian package) - update to 1:128.6.0esr-1~deb12u1
firefox - update to 128.6.0-1
firefox-debuginfo - update to 128.6.0-1
firefox-debugsource - update to 128.6.0-1
firefox (Red Hat package) - addressed in versions 128.6.0-1.el7_9, 128.6.0-1.el8_2, 128.6.0-1.el8_4, 128.6.0-1.el8_6, 128.6.0-1.el8_8, 128.6.0-1.el8_10, 128.6.0-1.el9_0, 128.6.0-1.el9_2, 128.6.0-1.el9_4, 128.6.0-1.el9_5
thunderbird - addressed in versions 128.6.0-1.fc40, 128.6.0-1.fc41
firefox - addressed in versions 128.6.0-1.0.1, 128.6.0-1.0.2
thunderbird - update to 128.6.0-3.0.1
MozillaFirefox - addressed in versions 128.6.0-112.243.1, 128.6.0-150200.152.167.1
MozillaFirefox-devel - addressed in versions 128.6.0-112.243.1, 128.6.0-150200.152.167.1
MozillaFirefox-debugsource - addressed in versions 128.6.0-112.243.1, 128.6.0-150200.152.167.1
MozillaFirefox-translations-common - addressed in versions 128.6.0-112.243.1, 128.6.0-150200.152.167.1
MozillaFirefox-debuginfo - addressed in versions 128.6.0-112.243.1, 128.6.0-150200.152.167.1
MozillaThunderbird-translations-other - update to 128.6.0-150200.8.197.1
MozillaThunderbird-translations-common - update to 128.6.0-150200.8.197.1
MozillaThunderbird - update to 128.6.0-150200.8.197.1
MozillaThunderbird-debuginfo - update to 128.6.0-150200.8.197.1
MozillaThunderbird-debugsource - update to 128.6.0-150200.8.197.1
MozillaFirefox-branding-upstream - update to 128.6.0-150200.152.167.1
MozillaFirefox-translations-other - update to 128.6.0-150200.152.167.1
dev-lang/spidermonkey - update to 128.9.0
mail-client/thunderbird-bin - update to 128.9.0
mail-client/thunderbird - update to 128.9.0
thunderbird - update to 128.11.1-1
thunderbird-debuginfo - update to 128.11.1-1
thunderbird-debugsource - update to 128.11.1-1
thunderbird-librnp-rnp - update to 128.11.1-1
thunderbird-wayland - update to 128.11.1-1
firefox (Ubuntu package) - update to 134.0+build1-0ubuntu0.20.04.1
firefox - addressed in versions 134.0-1.fc40, 134.0-1.fc41
thunderbird (Ubuntu package) - update to 1:140.7.1+build1-0ubuntu0.22.04.1

External References

Related Security Bulletins