A firefox-esr security update has been released for Debian GNU/Linux 8 LTS to address an issue was found in the IonMonkey JIT compiler of the Mozilla Firefox web browser which could lead to arbitrary code execution.

Package : firefox-esr
Version : 68.4.1esr-1~deb8u1
CVE ID : CVE-2019-17026

An issue was found in the IonMonkey JIT compiler of the Mozilla Firefox
web browser which could lead to arbitrary code execution.

For Debian 8 "Jessie", this problem has been fixed in version
68.4.1esr-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