CVE-2020-26950
Published: 10 November 2020
In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.
Priority
High
CVSS 3 base score: 8.8
Status
| Package | Release | Status |
|---|---|---|
|
firefox Launchpad, Ubuntu, Debian |
bionic |
Released
(82.0.3+build1-0ubuntu0.18.04.1)
|
| focal |
Released
(82.0.3+build1-0ubuntu0.20.04.1)
|
|
| groovy |
Released
(82.0.3+build1-0ubuntu0.20.10.1)
|
|
| hirsute |
Released
(82.0.3+build1-0ubuntu1)
|
|
| impish |
Released
(82.0.3+build1-0ubuntu1)
|
|
| jammy |
Released
(82.0.3+build1-0ubuntu1)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(82.0.3)
|
|
| xenial |
Released
(82.0.3+build1-0ubuntu0.16.04.1)
|
|
|
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
|
|
| precise |
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
|
|
| precise |
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
|
|
| precise |
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
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
thunderbird Launchpad, Ubuntu, Debian |
bionic |
Released
(1:78.8.1+build1-0ubuntu0.18.04.1)
|
| focal |
Released
(1:78.7.1+build1-0ubuntu0.20.04.1)
|
|
| groovy |
Released
(1:78.5.0+build3-0ubuntu0.20.10.1)
|
|
| hirsute |
Released
(1:78.4.3+build1-0ubuntu1)
|
|
| impish |
Released
(1:78.4.3+build1-0ubuntu1)
|
|
| jammy |
Released
(1:78.4.3+build1-0ubuntu1)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(78.4.2)
|
|
| xenial |
Needs triage
|
Notes
| Author | Note |
|---|---|
| tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26950
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-49/#CVE-2020-26950
- https://ubuntu.com/security/notices/USN-4625-1
- https://ubuntu.com/security/notices/USN-4647-1
- NVD
- Launchpad
- Debian