CVE-2021-23979

EUVD-2021-10900
Mozilla developers reported memory safety bugs present in Firefox 85. 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 Firefox < 86.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 56%
Affected Products (NVD)
VendorProductVersion
mozillafirefox
𝑥
< 86.0
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 86.0+build3-0ubuntu0.18.04.1
released
focal
Fixed 86.0+build3-0ubuntu0.20.04.1
released
groovy
Fixed 86.0+build3-0ubuntu0.20.10.1
released
hirsute
Fixed 86.0+build3-0ubuntu1
released
impish
Fixed 86.0+build3-0ubuntu1
released
jammy
Fixed 86.0+build3-0ubuntu1
released
kinetic
Fixed 86.0+build3-0ubuntu1
released
lunar
Fixed 86.0+build3-0ubuntu1
released
mantic
Fixed 86.0+build3-0ubuntu1
released
noble
Fixed 86.0+build3-0ubuntu1
released
trusty
dne
xenial
Fixed 86.0+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