CVE-2021-29989
Published: 11 August 2021
Mozilla developers reported memory safety bugs present in Firefox 90 and Firefox ESR 78.12. 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 Thunderbird < 78.13, Firefox ESR < 78.13, and Firefox < 91.
Notes
| Author | Note |
|---|---|
| tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
firefox Launchpad, Ubuntu, Debian |
bionic |
Released
(91.0+build2-0ubuntu0.18.04.1)
|
| focal |
Released
(91.0+build2-0ubuntu0.20.04.1)
|
|
| hirsute |
Released
(91.0+build2-0ubuntu0.21.04.1)
|
|
| impish |
Released
(91.0+build2-0ubuntu1)
|
|
| jammy |
Released
(91.0+build2-0ubuntu1)
|
|
| lunar |
Released
(91.0+build2-0ubuntu1)
|
|
| upstream |
Released
(91)
|
|
| xenial |
Ignored
(end of standard support, was needed)
|
|
| trusty |
Does not exist
|
|
| kinetic |
Released
(91.0+build2-0ubuntu1)
|
|
|
mozjs38 Launchpad, Ubuntu, Debian |
hirsute |
Does not exist
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| lunar |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
| bionic |
Needs triage
|
|
| focal |
Does not exist
|
|
| kinetic |
Does not exist
|
|
|
mozjs52 Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| lunar |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
| focal |
Needs triage
|
|
| hirsute |
Does not exist
|
|
| kinetic |
Does not exist
|
|
|
mozjs68 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Needs triage
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| lunar |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
| kinetic |
Does not exist
|
|
|
mozjs78 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Does not exist
|
|
| hirsute |
Ignored
(end of life)
|
|
| jammy |
Needs triage
|
|
| lunar |
Needs triage
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
| impish |
Ignored
(end of life)
|
|
| kinetic |
Ignored
(end of life, was needs-triage)
|
|
|
thunderbird Launchpad, Ubuntu, Debian |
bionic |
Released
(1:78.13.0+build1-0ubuntu0.18.04.1)
|
| focal |
Released
(1:78.13.0+build1-0ubuntu0.20.04.2)
|
|
| impish |
Released
(1:78.13.0+build1-0ubuntu2)
|
|
| jammy |
Released
(1:78.13.0+build1-0ubuntu2)
|
|
| lunar |
Released
(1:78.13.0+build1-0ubuntu2)
|
|
| trusty |
Does not exist
|
|
| xenial |
Ignored
(end of standard support, was needed)
|
|
| hirsute |
Released
(1:78.13.0+build1-0ubuntu0.21.04.2)
|
|
| upstream |
Released
(78.13)
|
|
| kinetic |
Released
(1:78.13.0+build1-0ubuntu2)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.8 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29989
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-33/#CVE-2021-29989
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-34/#CVE-2021-29989
- https://ubuntu.com/security/notices/USN-5037-1
- https://ubuntu.com/security/notices/USN-5058-1
- NVD
- Launchpad
- Debian