CVE-2020-26972

EUVD-2020-19496
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 66%
Affected Products (NVD)
VendorProductVersion
mozillafirefox
𝑥
< 84.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
firefox
sid
132.0.1-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
firefox
bionic
Fixed 84.0+build3-0ubuntu0.18.04.1
released
focal
Fixed 84.0+build3-0ubuntu0.20.04.1
released
groovy
Fixed 84.0+build3-0ubuntu0.20.10.1
released
hirsute
Fixed 84.0+build3-0ubuntu2
released
impish
Fixed 84.0+build3-0ubuntu2
released
jammy
Fixed 84.0+build3-0ubuntu2
released
kinetic
Fixed 84.0+build3-0ubuntu2
released
lunar
Fixed 84.0+build3-0ubuntu2
released
mantic
Fixed 84.0+build3-0ubuntu2
released
noble
Fixed 84.0+build3-0ubuntu2
released
trusty
dne
xenial
Fixed 84.0+build3-0ubuntu0.16.04.1
released
mozjs38
bionic
ignored
focal
dne
groovy
dne
hirsute
dne
impish
dne
jammy
dne
kinetic
dne
lunar
dne
mantic
dne
noble
dne
trusty
dne
xenial
dne
mozjs52
bionic
ignored
focal
ignored
groovy
ignored
hirsute
dne
impish
dne
jammy
dne
kinetic
dne
lunar
dne
mantic
dne
noble
dne
trusty
dne
xenial
dne
mozjs60
bionic
dne
focal
dne
groovy
dne
hirsute
dne
impish
dne
jammy
dne
kinetic
dne
lunar
dne
mantic
dne
noble
dne
trusty
dne
xenial
dne
mozjs68
bionic
dne
focal
ignored
groovy
ignored
hirsute
dne
impish
dne
jammy
dne
kinetic
dne
lunar
dne
mantic
dne
noble
dne
trusty
dne
xenial
dne
mozjs78
bionic
dne
focal
dne
groovy
ignored
hirsute
ignored
impish
ignored
jammy
ignored
kinetic
ignored
lunar
ignored
mantic
dne
noble
dne
trusty
dne
xenial
dne