A firefox-esr security update has been released for Debian GNU/Linux 11 and 12 to address multiple security issues that could potentially result in the execution of arbitrary code, clickjacking, spoofing, or information leaks.

[SECURITY] [DSA 5535-1] firefox-esr security update

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Debian Security Advisory DSA-5535-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
October 25, 2023 https://www.debian.org/security/faq
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Package : firefox-esr
CVE ID : CVE-2023-5721 CVE-2023-5724 CVE-2023-5725 CVE-2023-5728
CVE-2023-5730 CVE-2023-5732

Multiple security issues have been found in the Mozilla Firefox web
browser, which could potentially result in the execution of arbitrary
code, clickjacking, spoofing or information leaks.

For the oldstable distribution (bullseye), these problems have been fixed
in version 115.4.0esr-1~deb11u1.

For the stable distribution (bookworm), these problems have been fixed in
version 115.4.0esr-1~deb12u1.

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 Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/