Multiple security issues have been found in Thunderbird which could result in spoofing the displayed sender email address, denial of service or potentially the execution of arbitrary code.

For Debian 8 Jessie, these problems have been fixed in version 1:68.8.0-1~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