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CVE-2023-39928

Published: 28 September 2023

A use-after-free vulnerability exists in the MediaRecorder API of Webkit WebKitGTK 2.40.5. A specially crafted web page can abuse this vulnerability to cause memory corruption and potentially arbitrary code execution. A user would need to to visit a malicious webpage to trigger this 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
mdeslaur
It is no longer possible to build new webkit2gtk versions on
focal and earlier. Marking as ignored.

Priority

Medium

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
webkitgtk
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Needs triage

bionic Needs triage

focal Does not exist

jammy Does not exist

lunar Does not exist

upstream Needs triage

mantic Does not exist

webkit2gtk
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Ignored

bionic Ignored

focal Ignored

jammy
Released (2.42.1-0ubuntu0.22.04.1)
upstream
Released (2.42.0)
lunar
Released (2.42.1-0ubuntu0.23.04.1)
mantic Not vulnerable
(2.42.1-2)
qtwebkit-source
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Needs triage

bionic Needs triage

focal Does not exist

jammy Does not exist

lunar Does not exist

upstream Needs triage

mantic Does not exist

qtwebkit-opensource-src
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Needs triage

bionic Needs triage

focal Needs triage

jammy Needs triage

lunar Needs triage

upstream Needs triage

mantic Needs triage

wpewebkit
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Ignored
(end of standard support)
bionic Ignored
(end of standard support)
focal Needs triage

jammy Needs triage

lunar Does not exist

upstream Needs triage

mantic 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