Package : firefox-esr
CVE ID : CVE-2021-43546 CVE-2021-43545 CVE-2021-43543 CVE-2021-43542
CVE-2021-43541 CVE-2021-43539 CVE-2021-43538 CVE-2021-43537
CVE-2021-43536 CVE-2021-43535 CVE-2021-43534 CVE-2021-38509
CVE-2021-38508 CVE-2021-38507 CVE-2021-38506 CVE-2021-38504
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 spoofing.
Debian follows the extended support releases (ESR) of Firefox. Support for the 78.x series has ended, so starting with this update we're now following the 91.x releases.
Between 78.x and 91.x, Firefox has seen a number of feature updates. For more information please refer to https://www.mozilla.org/en-US/firefox/91.0esr/releasenotes/
For the oldstable distribution (buster) one more final toolchain update is needed, updated packages will shortly be available as 91.4.1esr-1~deb10u1
For the stable distribution (bullseye), these problem have been fixed in version 91.4.1esr-1~deb11u1.
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:
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/