CVE-2021-23992

Name	CVE-2021-23992
Description	Thunderbird did not check if the user ID associated with an OpenPGP key has a valid self signature. An attacker may create a crafted version of an OpenPGP key, by either replacing the original user ID, or by adding another user ID. If Thunderbird imports and accepts the crafted key, the Thunderbird user may falsely conclude that the false user ID belongs to the correspondent. This vulnerability affects Thunderbird < 78.9.1.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-2632-1, DSA-4897-1

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)	1:115.10.1-1~deb10u1	fixed
	bullseye	1:115.7.0-1~deb11u1	fixed
	bullseye (security)	1:115.10.1-1~deb11u1	fixed
	bookworm	1:115.7.0-1~deb12u1	fixed
	bookworm (security)	1:115.10.1-1~deb12u1	fixed
	sid	1:115.10.1-1	fixed

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

Package	Type	Release	Fixed Version	Origin
thunderbird	source	stretch	1:78.10.0-1~deb9u1	DLA-2632-1
thunderbird	source	buster	1:78.10.0-1~deb10u1	DSA-4897-1
thunderbird	source	(unstable)	1:78.10.0-1

https://www.mozilla.org/en-US/security/advisories/mfsa2021-13/#CVE-2021-23992