A thunderbird security update has been released for Debian GNU/Linux 8 LTS to address multiple security issues which could potentially result in the execution of arbitrary code.

Package : thunderbird
Version : 1:68.6.0-1~deb8u1
CVE ID : CVE-2019-20503 CVE-2020-6805 CVE-2020-6806 CVE-2020-6807.
CVE-2020-6811 CVE-2020-6812 CVE-2020-6814

Multiple security issues have been found in Thunderbird which could
potentially result in the execution of arbitrary code.

For Debian 8 "Jessie", these problems have been fixed in version
1:68.6.0-1~deb8u1.

We recommend that you upgrade your thunderbird 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