Multiple vulnerabilities in WebKitGTK+ and WPE WebKit

Published: 2023-12-01 | Updated: 2023-12-05

Risk	Critical
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-42917 CVE-2023-42916
CWE-ID	CWE-119 CWE-125
Exploitation vector	Network
Public exploit	Vulnerability #1 is being exploited in the wild. Vulnerability #2 is being exploited in the wild.
Vulnerable software Subscribe	WebKitGTK+ Server applications / Frameworks for developing and running applications WPE WebKit Server applications / Frameworks for developing and running applications
Vendor

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU83606

Risk: Critical

CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2023-42917

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install update from vendor's website.

Vulnerable software versions

WebKitGTK+: before 2.42.3

WPE WebKit: before 2.42.3

External links

http://support.apple.com/en-us/HT214033
http://support.apple.com/en-us/HT214032
http://support.apple.com/en-us/HT214031
http://wpewebkit.org/security/WSA-2023-0011.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.

2) Out-of-bounds read

EUVDB-ID: #VU83605