CVE-2021-29969

Published: 05 August 2021

If Thunderbird was configured to use STARTTLS for an IMAP connection, and an attacker injected IMAP server responses prior to the completion of the STARTTLS handshake, then Thunderbird didn't ignore the injected data. This could have resulted in Thunderbird showing incorrect information, for example the attacker could have tricked Thunderbird to show folders that didn't exist on the IMAP server. This vulnerability affects Thunderbird < 78.12.

Priority

Medium

CVSS 3 base score: 5.9

Status

Package Release Status
thunderbird
Launchpad, Ubuntu, Debian
Upstream
Released (78.12)
Ubuntu 21.04 (Hirsute Hippo)
Released (1:78.13.0+build1-0ubuntu0.21.04.2)
Ubuntu 20.04 LTS (Focal Fossa)
Released (1:78.13.0+build1-0ubuntu0.20.04.2)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (1:78.13.0+build1-0ubuntu0.18.04.1)
Ubuntu 16.04 ESM (Xenial Xerus) Needed

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist