CVE-2021-21779

A use-after-free vulnerability exists in the way Webkits GraphicsContext handles certain events in WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
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
talosCNA
6.8 MEDIUM
NETWORK
LOW
LOW
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 65%
VendorProductVersion
webkitgtkwebkitgtk
2.30.4
debiandebian_linux
10.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
webkit2gtk
bullseye
2.44.2-1~deb11u1
postponed
buster
postponed
stretch
ignored
bullseye (security)
2.44.3-1~deb11u1
fixed
bookworm
2.44.2-1~deb12u1
fixed
bookworm (security)
2.46.0-2~deb12u1
fixed
trixie
2.46.2-1
fixed
sid
2.46.3-1
fixed
wpewebkit
bullseye (security)
2.38.6-1~deb11u1
fixed
bullseye
2.38.6-1~deb11u1
postponed
buster
postponed
stretch
ignored
bookworm
2.38.6-1
fixed
sid
2.46.3-1
fixed
trixie
2.46.3-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
qtwebkit-opensource-src
noble
ignored
mantic
ignored
lunar
ignored
kinetic
ignored
jammy
ignored
impish
ignored
hirsute
ignored
groovy
ignored
focal
ignored
bionic
ignored
xenial
ignored
trusty
dne
qtwebkit-source
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
groovy
dne
focal
dne
bionic
ignored
xenial
ignored
trusty
dne
webkit2gtk
noble
Fixed 2.32.3-1ubuntu1
released
mantic
Fixed 2.32.3-1ubuntu1
released
lunar
Fixed 2.32.3-1ubuntu1
released
kinetic
Fixed 2.32.3-1ubuntu1
released
jammy
Fixed 2.32.3-1ubuntu1
released
impish
Fixed 2.32.3-1ubuntu1
released
hirsute
Fixed 2.32.3-0ubuntu0.21.04.1
released
groovy
ignored
focal
Fixed 2.32.3-0ubuntu0.20.04.1
released
bionic
Fixed 2.32.3-0ubuntu0.18.04.1
released
xenial
ignored
trusty
dne
webkitgtk
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
groovy
dne
focal
dne
bionic
ignored
xenial
ignored
trusty
dne
wpewebkit
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
ignored
impish
ignored
hirsute
ignored
groovy
ignored
focal
ignored
bionic
dne
xenial
dne
trusty
dne
Common Weakness Enumeration
References
http://www.openwall.com/lists/oss-security/2021/07/23/1
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KYMMBQN4PRVDLMIJT2LY2BWHLYBD57P3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V4QORERLPDN3UNNJFJSOMHZZCU2G75Q6/
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1238
https://www.debian.org/security/2021/dsa-4945
http://www.openwall.com/lists/oss-security/2021/07/23/1
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KYMMBQN4PRVDLMIJT2LY2BWHLYBD57P3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V4QORERLPDN3UNNJFJSOMHZZCU2G75Q6/
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1238
https://www.debian.org/security/2021/dsa-4945