CVE-2021-4129
Publication date 21 January 2022
Last updated 24 July 2024
Ubuntu priority
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 | ||
| 22.04 LTS jammy |
Fixed 1:91.4.0+build1-0ubuntu1
|
|
| 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