CVE-2021-43529

Name	CVE-2021-43529
Description	Thunderbird versions prior to 91.3.0 are vulnerable to the heap overflow described in CVE-2021-43527 when processing S/MIME messages. Thunderbird versions 91.3.0 and later will not call the vulnerable code when processing S/MIME messages that contain certificates with DER-encoded DSA or RSA-PSS signatures.
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-2874-1, DSA-5034-1

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	stretch	1:91.4.1-1~deb9u1	DLA-2874-1
thunderbird	source	buster	1:91.4.1-1~deb10u1	DSA-5034-1
thunderbird	source	bullseye	1:91.4.1-1~deb11u1	DSA-5034-1
thunderbird	source	(unstable)	1:91.3.0-1

https://www.openwall.com/lists/oss-security/2021/12/01/6
https://bugzilla.mozilla.org/show_bug.cgi?id=1738501