A firefox-esr security update has been released for Debian GNU/Linux 8 LTS.

Package : firefox-esr
Version : 68.5.0esr-1~deb8u1
CVE ID : CVE-2020-6796 CVE-2020-6798 CVE-2020-6800

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

For Debian 8 "Jessie", these problems have been fixed in version
68.5.0esr-1~deb8u1.

We recommend that you upgrade your firefox-esr packages.

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