Multiple security issues have been found in Thunderbird which could result in the setup of a non-encrypted IMAP connection, denial of service or potentially the execution of arbitrary code.

For Debian 8 Jessie, these problems have been fixed in version 1:68.9.0-1~deb8u2.

Note: 1:68.9.0esr-1~deb8u2 fixes an i386 build error in the otherwise identical 1:68.9.0esr-1~deb8u1 that was uploaded but not announced.

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