A firefox-esr security update has been released for Debian GNU/Linux 10 to address multiple security issues, which could potentially result in the execution of arbitrary code, information disclosure or CSS sanitiser bypass.

DSA 4813-1: firefox-esr security update

- -------------------------------------------------------------------------
Debian Security Advisory DSA-4813-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
December 16, 2020   https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : firefox-esr
CVE ID : CVE-2020-16042 CVE-2020-26971 CVE-2020-26973 CVE-2020-26974
CVE-2020-26978 CVE-2020-35111 CVE-2020-35113

Multiple security issues have been found in the Mozilla Firefox web
browser, which could potentially result in the execution of arbitrary
code, information disclosure or CSS sanitiser bypass.

For the stable distribution (buster), these problems have been fixed in
version 78.6.0esr-1~deb10u1.

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/