Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2021-21806

Published: 8 July 2021

An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim needs to visit a malicious web site to trigger the vulnerability.

Notes

AuthorNote
jdstrand
webkit receives limited support. For details, see
https://wiki.ubuntu.com/SecurityTeam/FAQ#webkit
webkit in Ubuntu uses the JavaScriptCore (JSC) engine, not V8

Priority

Medium

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
qtwebkit-opensource-src
Launchpad, Ubuntu, Debian
bionic Ignored

focal Ignored

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 Ignored

noble Ignored

trusty Does not exist

upstream Ignored

xenial Ignored

qtwebkit-source
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 Needs triage

xenial Ignored

webkit2gtk
Launchpad, Ubuntu, Debian
bionic
Released (2.30.6-0ubuntu0.18.04.1)
focal
Released (2.30.6-0ubuntu0.20.04.1)
groovy
Released (2.30.6-0ubuntu0.20.10.1)
hirsute
Released (2.32.0-1ubuntu3)
impish
Released (2.32.0-1ubuntu3)
jammy
Released (2.32.0-1ubuntu3)
kinetic
Released (2.32.0-1ubuntu3)
lunar
Released (2.32.0-1ubuntu3)
mantic
Released (2.32.0-1ubuntu3)
noble
Released (2.32.0-1ubuntu3)
trusty Does not exist

upstream
Released (2.30.6)
xenial Ignored

webkitgtk
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 Needs triage

xenial Ignored

wpewebkit
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored

groovy Ignored
(end of life)
hirsute Ignored
(end of life)
impish Ignored
(end of life)
jammy Ignored

kinetic Does not exist

lunar Does not exist

mantic Does not exist

noble Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

Severity score breakdown

Parameter Value
Base score 8.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H