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CVE-2021-29949

Publication date 22 April 2021

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

7.8 · High

Score breakdown

When loading the shared library that provides the OTR protocol implementation, Thunderbird will initially attempt to open it using a filename that isn't distributed by Thunderbird. If a computer has already been infected with a malicious library of the alternative filename, and the malicious library has been copied to a directory that is contained in the search path for executable libraries, then Thunderbird will load the incorrect library. This vulnerability affects Thunderbird < 78.9.1.

Status

Package Ubuntu Release Status
thunderbird 23.04 lunar
Fixed 1:78.11.0+build1-0ubuntu2
22.10 kinetic
Fixed 1:78.11.0+build1-0ubuntu2
22.04 LTS jammy
Fixed 1:78.11.0+build1-0ubuntu2
21.10 impish
Fixed 1:78.11.0+build1-0ubuntu2
21.04 hirsute
Fixed 1:78.11.0+build1-0ubuntu0.21.04.2
20.10 groovy
Fixed 1:78.11.0+build1-0ubuntu0.20.10.2
20.04 LTS focal
Fixed 1:78.11.0+build1-0ubuntu0.20.04.2
18.04 LTS bionic
Fixed 1:78.11.0+build1-0ubuntu0.18.04.2
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release

Severity score breakdown

Parameter Value
Base score 7.8 · High
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-4995-1
    • Thunderbird vulnerabilities
    • 22 June 2021
    • USN-4995-2
    • Thunderbird vulnerabilities
    • 25 June 2021

Other references