#VU32969 Security restrictions bypass in WebKitGTK+ and WPE WebKit - CVE-2020-9915

Vulnerability identifier: #VU32969

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-2020-9915

CWE-ID: CWE-264

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 application does not properly impose Content Security Policy. A remote attacker can create a specially crafted web page, trick the victim into visiting it and bypass implemented security restrictions. The vulnerability may allow an attacker to perform cross-site scripting attacks or gain access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

WebKitGTK+: 2.28.0 - 2.28.3

WPE WebKit: 2.28.0 - 2.28.3

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External links
https://webkitgtk.org/security/WSA-2020-0007.html

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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?

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