CVE-2021-29969

Publication date 5 August 2021

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

If Thunderbird was configured to use STARTTLS for an IMAP connection, and an attacker injected IMAP server responses prior to the completion of the STARTTLS handshake, then Thunderbird didn't ignore the injected data. This could have resulted in Thunderbird showing incorrect information, for example the attacker could have tricked Thunderbird to show folders that didn't exist on the IMAP server. This vulnerability affects Thunderbird < 78.12.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
thunderbird	23.04 lunar	Fixed 1:78.12.0+build2-0ubuntu1
	22.10 kinetic	Fixed 1:78.12.0+build2-0ubuntu1
	22.04 LTS jammy	Fixed 1:78.12.0+build2-0ubuntu1
	21.10 impish	Fixed 1:78.12.0+build2-0ubuntu1
	21.04 hirsute	Fixed 1:78.13.0+build1-0ubuntu0.21.04.2
	20.10 groovy	Ignored end of life
	20.04 LTS focal	Fixed 1:78.13.0+build1-0ubuntu0.20.04.2
	18.04 LTS bionic	Fixed 1:78.13.0+build1-0ubuntu0.18.04.1
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Not in release

Severity score breakdown

Parameter	Value
Base score	5.9 · Medium
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)