CVE-2021-23981
Published: 24 March 2021
A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
Notes
| Author | Note |
|---|---|
| tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
firefox Launchpad, Ubuntu, Debian |
bionic |
Released
(87.0+build3-0ubuntu0.18.04.2)
|
| focal |
Released
(87.0+build3-0ubuntu0.20.04.2)
|
|
| groovy |
Released
(87.0+build3-0ubuntu0.20.10.1)
|
|
| hirsute |
Released
(87.0+build3-0ubuntu1)
|
|
| impish |
Released
(87.0+build3-0ubuntu1)
|
|
| jammy |
Released
(87.0+build3-0ubuntu1)
|
|
| kinetic |
Released
(87.0+build3-0ubuntu1)
|
|
| lunar |
Released
(87.0+build3-0ubuntu1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(87.0)
|
|
| xenial |
Released
(87.0+build3-0ubuntu0.16.04.2)
|
|
|
mozjs38 Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| focal |
Does not exist
|
|
| groovy |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
mozjs52 Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| focal |
Needs triage
|
|
| groovy |
Ignored
(reached end-of-life)
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
mozjs60 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Does not exist
|
|
| groovy |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
mozjs68 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Needs triage
|
|
| groovy |
Ignored
(reached end-of-life)
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
mozjs78 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Does not exist
|
|
| groovy |
Ignored
(reached end-of-life)
|
|
| hirsute |
Ignored
(reached end-of-life)
|
|
| impish |
Ignored
(reached end-of-life)
|
|
| jammy |
Needs triage
|
|
| kinetic |
Needs triage
|
|
| lunar |
Needs triage
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
thunderbird Launchpad, Ubuntu, Debian |
bionic |
Released
(1:78.11.0+build1-0ubuntu0.18.04.2)
|
| focal |
Released
(1:78.11.0+build1-0ubuntu0.20.04.2)
|
|
| groovy |
Released
(1:78.11.0+build1-0ubuntu0.20.10.2)
|
|
| hirsute |
Released
(1:78.11.0+build1-0ubuntu0.21.04.2)
|
|
| impish |
Released
(1:78.11.0+build1-0ubuntu2)
|
|
| jammy |
Released
(1:78.11.0+build1-0ubuntu2)
|
|
| kinetic |
Released
(1:78.11.0+build1-0ubuntu2)
|
|
| lunar |
Released
(1:78.11.0+build1-0ubuntu2)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(78.9)
|
|
| xenial |
Needed
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.1 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23981
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-10/#CVE-2021-23981
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-11/#CVE-2021-23981
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-12/#CVE-2021-23981
- https://ubuntu.com/security/notices/USN-4893-1
- https://ubuntu.com/security/notices/USN-4995-1
- https://ubuntu.com/security/notices/USN-4995-2
- NVD
- Launchpad
- Debian