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CVE-2021-4129

Publication date 21 January 2022

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

Mozilla developers and community members Julian Hector, Randell Jesup, Gabriele Svelto, Tyson Smith, Christian Holler, and Masayuki Nakano reported memory safety bugs present in Firefox 94. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 95, Firefox ESR < 91.4.0, and Thunderbird < 91.4.0.

Status

Package Ubuntu Release Status
thunderbird 23.04 lunar
Fixed 1:91.4.0+build1-0ubuntu1
22.10 kinetic
Fixed 1:91.4.0+build1-0ubuntu1
22.04 LTS jammy
Fixed 1:91.4.0+build1-0ubuntu1
21.10 impish
Fixed 1:91.5.0+build1-0ubuntu0.21.10.1
21.04 hirsute Ignored end of life
20.04 LTS focal
Fixed 1:91.5.0+build1-0ubuntu0.20.04.1
18.04 LTS bionic
Fixed 1:91.5.0+build1-0ubuntu0.18.04.1

Severity score breakdown

Parameter Value
Base score 9.8 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-5246-1
    • Thunderbird vulnerabilities
    • 21 January 2022
    • USN-5248-1
    • Thunderbird vulnerabilities
    • 21 January 2022

Other references