#VU75918 Use-after-free in webkit2gtk3 (Red Hat package) - CVE-2023-2203

Vulnerability identifier: #VU75918

Vulnerability 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-2023-2203

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
webkit2gtk3 (Red Hat package)
Operating systems & Components / Operating system package or component

Vendor: Red Hat Inc.

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a missing fix for a critical risk vulnerability in WebKit  #VU74604 (CVE-2023-28205). A remote attacker can trick the victim to open a specially crafted website, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

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

Mitigation
Install updates from vendor's website.

Vulnerable software versions

webkit2gtk3 (Red Hat package): before 2.38.5-1.el9_2.1

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=2188543

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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.