#VU80630 Security features bypass in WebKitGTK+ and WPE WebKit - CVE-2023-32370

Vulnerability identifier: #VU80630

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-32370

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WebKitGTK+
Server applications / Frameworks for developing and running applications
WPE WebKit
Server applications / Frameworks for developing and running applications

Vendor: WebKitGTK

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to an error in WebKit, as Content Security Policy may fail to block domains with wildcards. A remote attacker can bypass implemented CSP restrictions.

Mitigation
Install update from vendor's website.

Vulnerable software versions

WebKitGTK+: before 2.40.1

WPE WebKit: before 2.40.1

---

External links
https://support.apple.com/en-us/HT213670
https://webkitgtk.org/security/WSA-2023-0008.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?

No. We are not aware of malware exploiting this vulnerability.