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Published: 4 July 2022

An OpenPGP digital signature includes information about the date when the signature was created. When displaying an email that contains a digital signature, the email's date will be shown. If the dates were different, then Thunderbird didn't report the email as having an invalid signature. If an attacker performed a replay attack, in which an old email with old contents are resent at a later time, it could lead the victim to believe that the statements in the email are current. Fixed versions of Thunderbird will require that the signature's date roughly matches the displayed date of the email. This vulnerability affects Thunderbird < 102 and Thunderbird < 91.11.



Cvss 3 Severity Score


Score breakdown


Package Release Status
Launchpad, Ubuntu, Debian
Released (1:91.11.0+build2-0ubuntu0.18.04.1)
Released (1:91.11.0+build2-0ubuntu0.20.04.1)
Released (1:91.11.0+build2-0ubuntu0.21.10.1)
Released (1:91.11.0+build2-0ubuntu0.22.04.1)
kinetic Not vulnerable
lunar Not vulnerable
trusty Ignored
(end of standard support, was needs-triage)
Released (91.11)
xenial Ignored
(end of standard support, was needs-triage)

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N