Updated Firefox packages has been released for Debian GNU/Linux 8 LTS

Package : firefox-esr
Version : 60.5.1esr-1~deb8u1
CVE ID : CVE-2018-18356 CVE-2019-5785

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
60.5.1esr-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

  Firefox-ESR Security Update for Debian 8 LTS