Vulnerability identifier: #VU25380

Vulnerability risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-3865

CWE-ID: CWE-346

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 a logical error that leads to a top-level DOM object context being incorrectly considered secure. A remote attacker can gain unauthorized access to DOM objects from another domain.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

WebKitGTK+: 2.26.1 - 2.26.3

WPE WebKit: 2.26.0 - 2.26.3

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External links
http://webkitgtk.org/security/WSA-2020-0002.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.