Ubuntu update for webkit2gtk

Published: 2023-12-11

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	Ubuntu Operating systems & Components / Operating system libjavascriptcoregtk-4.1-0 (Ubuntu package) Other libwebkit2gtk-4.1-0 (Ubuntu package) Other libwebkit2gtk-4.0-37 (Ubuntu package) Operating systems & Components / Operating system package or component libjavascriptcoregtk-6.0-1 (Ubuntu package) Operating systems & Components / Operating system package or component libjavascriptcoregtk-4.0-18 (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU83606

Risk: Critical

CVSSv4.0: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]

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

Update the affected package webkit2gtk to the latest version.

Vulnerable software versions

Ubuntu: 22.04 - 23.10

libjavascriptcoregtk-4.1-0 (Ubuntu package): before 2.42.3-0ubuntu0.22.04.1

libwebkit2gtk-4.1-0 (Ubuntu package): before 2.42.3-0ubuntu0.22.04.1

libwebkit2gtk-4.0-37 (Ubuntu package): before 2.42.3-0ubuntu0.22.04.1

libjavascriptcoregtk-6.0-1 (Ubuntu package): before 2.42.3-0ubuntu0.22.04.1

libjavascriptcoregtk-4.0-18 (Ubuntu package): before 2.42.3-0ubuntu0.22.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-6545-1

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