Debian alert DLA-4305-1 (firefox-esr)

From:
             
 
Emilio Pozuelo Monfort <pochu@debian.org>
To:
             
 
<debian-lts-announce@lists.debian.org>
Subject:
             
 
[SECURITY] [DLA 4305-1] firefox-esr security update
Date:
             
 
Fri, 19 Sep 2025 12:37:06 +0200
Message-ID:
             
 
<20250919103706.EC9CB5F000A6@kamino>
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Debian LTS Advisory DLA-4305-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/               Emilio Pozuelo Monfort
September 19, 2025                            https://wiki.debian.org/LTS
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Package        : firefox-esr
Version        : 140.3.0esr-1~deb11u2
CVE ID         : CVE-2025-10527 CVE-2025-10528 CVE-2025-10529 CVE-2025-10532
                 CVE-2025-10533 CVE-2025-10536 CVE-2025-10537

Multiple security issues have been found in the Mozilla Firefox web
browser, which could potentially result in the execution of arbitrary
code, sandbox escape, information disclosure or bypass of the same-origin
policy.

Debian follows the extended support releases (ESR) of Firefox.
So starting with this update we're now following the 140.x releases.

Between 128.x and 140.x, Firefox has seen a number of feature
updates. For more information please refer to
https://www.firefox.com/en-US/firefox/140.0esr/releasenotes/

For Debian 11 bullseye, these problems have been fixed in version
140.3.0esr-1~deb11u2.

We recommend that you upgrade your firefox-esr packages.

For the detailed security status of firefox-esr please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/firefox-esr

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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