RLSA-2025:21281 — Important: firefox security update

Summary

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

Security Fix(es):

* firefox: Mitigation bypass in the DOM: Security component (CVE-2025-13018)

* firefox: Use-after-free in the Audio/Video component (CVE-2025-13014)

* firefox: Incorrect boundary conditions in the JavaScript: WebAssembly component (CVE-2025-13016)

* firefox: Same-origin policy bypass in the DOM: Workers component (CVE-2025-13019)

* firefox: Use-after-free in the WebRTC: Audio/Video component (CVE-2025-13020)

* firefox: Race condition in the Graphics component (CVE-2025-13012)

* firefox: Spoofing issue in Firefox (CVE-2025-13015)

* firefox: Mitigation bypass in the DOM: Core & HTML component (CVE-2025-13013)

* firefox: Same-origin policy bypass in the DOM: Notifications component (CVE-2025-13017)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 1

Release	Package	Fixed in
Rocky Linux · 10	firefox	0:140.5.0-2.el10_1

Vulnerabilities 9

High 8.8

CVE-2025-13014

Use-after-free in the Audio/Video component

Use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Firefox ESR 115.30, Thunderbird 145, and Thunderbird 140.5.

Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi

Nov 11, 2025
High 8.8

CVE-2025-13020

Use-after-free in the WebRTC: Audio/Video component

Use-after-free in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5.

Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi

Nov 11, 2025
High 8.1

CVE-2025-13017

Same-origin policy bypass in the DOM: Notifications component

Same-origin policy bypass in the DOM: Notifications component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5.

Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi

Nov 11, 2025
High 8.1

CVE-2025-13018

Mitigation bypass in the DOM: Security component

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5.

Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi

Nov 11, 2025
High 8.1

CVE-2025-13019

Same-origin policy bypass in the DOM: Workers component

Same-origin policy bypass in the DOM: Workers component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5.

Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi

Nov 11, 2025
High 7.5

CVE-2025-13012

Race condition in the Graphics component

Race condition in the Graphics component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Firefox ESR 115.30, Thunderbird 145, and Thunderbird 140.5.

Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi

Nov 11, 2025
High 7.5

CVE-2025-13016

Incorrect boundary conditions in the JavaScript: WebAssembly component

Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5.

Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi

Nov 11, 2025
Medium 6.1

CVE-2025-13013

Mitigation bypass in the DOM: Core & HTML component

Mitigation bypass in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Firefox ESR 115.30, Thunderbird 145, and Thunderbird 140.5.

Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi

Nov 11, 2025
Low 3.4

CVE-2025-13015

Spoofing issue in Firefox

Spoofing issue in Firefox. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, and Firefox ESR 115.30.

Mozilla Firefox thunderbird mozjs38 Browsers Debian Ubuntu Wolfi

Nov 11, 2025

References

report
https://bugzilla.redhat.com/show_bug.cgi?id=2414079
report
https://bugzilla.redhat.com/show_bug.cgi?id=2414080
report
https://bugzilla.redhat.com/show_bug.cgi?id=2414083
report
https://bugzilla.redhat.com/show_bug.cgi?id=2414084
report
https://bugzilla.redhat.com/show_bug.cgi?id=2414085
report
https://bugzilla.redhat.com/show_bug.cgi?id=2414086
report
https://bugzilla.redhat.com/show_bug.cgi?id=2414090
report
https://bugzilla.redhat.com/show_bug.cgi?id=2414091
report
https://bugzilla.redhat.com/show_bug.cgi?id=2414092