Vulnerability identifier: #VU53782

Vulnerability risk: High

CVSSv3.1:

CVE-ID: CVE-2021-21775

CWE-ID: CWE-416

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
WPE WebKit

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when when processing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, 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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

WebKitGTK+: 2.0.0 - 2.30.4

WPE WebKit: 2.19.93 - 2.30.4

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CPE

• cpe:2.3:a:webkitgtk:webkitgtk:2.30.4:*:*:*:*:*:*:*

External links
http://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1229

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?