CVE-2020-26972
Published: 15 December 2020
The lifecycle of IPC Actors allows managed actors to outlive their manager actors; and the former must ensure that they are not attempting to use a dead actor they have a reference to. Such a check was omitted in WebGL, resulting in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox < 84.
Notes
Author | Note |
---|---|
tyhicks |
mozjs contains a copy of the SpiderMonkey JavaScript engine |
Priority
Status
Package | Release | Status |
---|---|---|
firefox
Launchpad, Ubuntu, Debian |
bionic |
Released
(84.0+build3-0ubuntu0.18.04.1)
|
focal |
Released
(84.0+build3-0ubuntu0.20.04.1)
|
|
groovy |
Released
(84.0+build3-0ubuntu0.20.10.1)
|
|
hirsute |
Released
(84.0+build3-0ubuntu2)
|
|
impish |
Released
(84.0+build3-0ubuntu2)
|
|
jammy |
Released
(84.0+build3-0ubuntu2)
|
|
kinetic |
Released
(84.0+build3-0ubuntu2)
|
|
lunar |
Released
(84.0+build3-0ubuntu2)
|
|
mantic |
Released
(84.0+build3-0ubuntu2)
|
|
noble |
Released
(84.0+build3-0ubuntu2)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(84)
|
|
xenial |
Released
(84.0+build3-0ubuntu0.16.04.1)
|
|
mozjs38
Launchpad, Ubuntu, Debian |
bionic |
Ignored
|
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
|
|
mantic |
Does not exist
|
|
noble |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Ignored
|
|
xenial |
Does not exist
|
|
mozjs52
Launchpad, Ubuntu, Debian |
bionic |
Ignored
|
focal |
Ignored
|
|
groovy |
Ignored
(end of life)
|
|
hirsute |
Does not exist
|
|
impish |
Does not exist
|
|
jammy |
Does not exist
|
|
kinetic |
Does not exist
|
|
lunar |
Does not exist
|
|
mantic |
Does not exist
|
|
noble |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Ignored
|
|
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
|
|
mantic |
Does not exist
|
|
noble |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Ignored
|
|
xenial |
Does not exist
|
|
mozjs68
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
focal |
Ignored
|
|
groovy |
Ignored
(end of life)
|
|
hirsute |
Does not exist
|
|
impish |
Does not exist
|
|
jammy |
Does not exist
|
|
kinetic |
Does not exist
|
|
lunar |
Does not exist
|
|
mantic |
Does not exist
|
|
noble |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Ignored
|
|
xenial |
Does not exist
|
|
mozjs78
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
focal |
Does not exist
|
|
groovy |
Ignored
(end of life)
|
|
hirsute |
Ignored
(end of life)
|
|
impish |
Ignored
(end of life)
|
|
jammy |
Ignored
|
|
kinetic |
Ignored
(end of life, was needs-triage)
|
|
lunar |
Ignored
(end of life, was needs-triage)
|
|
mantic |
Does not exist
|
|
noble |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Ignored
|
|
xenial |
Does not exist
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 9.8 |
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 |