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CVE-2021-30809

Published: 28 October 2021

A use after free issue was addressed with improved memory management. This issue is fixed in Safari 15, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to arbitrary code execution.

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

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

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 (2.32.4-0ubuntu0.18.04.1)
focal
Released (2.32.4-0ubuntu0.20.04.1)
hirsute
Released (2.32.4-0ubuntu0.21.04.1)
impish Not vulnerable
(2.33.90-1ubuntu1)
jammy Not vulnerable
(2.33.90-1ubuntu1)
kinetic Not vulnerable
(2.33.90-1ubuntu1)
lunar Not vulnerable
(2.33.90-1ubuntu1)
mantic Not vulnerable
(2.33.90-1ubuntu1)
noble Not vulnerable
(2.33.90-1ubuntu1)
trusty Does not exist

upstream
Released (2.32.4)
xenial Ignored

webkitgtk
Launchpad, Ubuntu, Debian
bionic Ignored

focal 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

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