CVE-2020-12398

Name	CVE-2020-12398
Description	If Thunderbird is configured to use STARTTLS for an IMAP server, and the server sends a PREAUTH response, then Thunderbird will continue with an unencrypted connection, causing email data to be sent without protection. This vulnerability affects Thunderbird < 68.9.0.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
References	DLA-2247-1, DSA-4702-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
thunderbird (PTS)	buster	1:91.12.0-1~deb10u1	fixed
	buster (security)	1:102.11.0-1~deb10u1	fixed
	bullseye	1:102.10.0-1~deb11u1	fixed
	bullseye (security)	1:102.11.0-1~deb11u1	fixed
	bookworm, sid	1:102.11.0-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
thunderbird	source	jessie	1:68.9.0-1~deb8u2	DLA-2247-1
thunderbird	source	stretch	1:68.9.0-1~deb9u1	DSA-4702-1
thunderbird	source	buster	1:68.9.0-1~deb10u1	DSA-4702-1
thunderbird	source	(unstable)	1:68.9.0-1

https://www.mozilla.org/en-US/security/advisories/mfsa2020-22/#CVE-2020-12398