PublicDateAtUSN: 2021-04-13 00:00:00 UTC
Candidate: CVE-2021-23992
PublicDate: 2021-06-24 14:15:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23992
 https://www.mozilla.org/en-US/security/advisories/mfsa2021-13/#CVE-2021-23992
 https://ubuntu.com/security/notices/USN-4995-1
 https://ubuntu.com/security/notices/USN-4995-2
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.
Ubuntu-Description:
Notes:
Mitigation:
Bugs:
Priority: medium
Discovered-by:
Assigned-to:
CVSS:
 nvd: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N [4.3 MEDIUM]


Patches_thunderbird:
upstream_thunderbird: released (78.9.1)
precise/esm_thunderbird: DNE
trusty_thunderbird: ignored (out of standard support)
trusty/esm_thunderbird: DNE
xenial_thunderbird: ignored (end of standard support, was needs-triage)
esm-infra/xenial_thunderbird: needs-triage
bionic_thunderbird: released (1:78.11.0+build1-0ubuntu0.18.04.2)
focal_thunderbird: released (1:78.11.0+build1-0ubuntu0.20.04.2)
groovy_thunderbird: released (1:78.11.0+build1-0ubuntu0.20.10.2)
hirsute_thunderbird: released (1:78.11.0+build1-0ubuntu0.21.04.2)
impish_thunderbird: released (1:78.11.0+build1-0ubuntu2)
jammy_thunderbird: released (1:78.11.0+build1-0ubuntu2)
devel_thunderbird: released (1:78.11.0+build1-0ubuntu2)