CVE-2023-39928

2023-09-2800:00:00

ubuntu.com

use-after-free

webkitgtk 2.40.5

mediarecorder api

memory corruption

arbitrary code execution

malicious webpage

limited support

javascriptcore

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

38.6%

JSON

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

Author	Note
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.

OSVersionArchitecturePackageVersionFilename
ubuntu22.04noarchwebkit2gtk< 2.42.1-0ubuntu0.22.04.1UNKNOWN
ubuntu23.04noarchwebkit2gtk< 2.42.1-0ubuntu0.23.04.1UNKNOWN