Type Confusion in WPE WebKit and WebKitGTK+ - CVE-2021-1789
Published: February 2, 2021 / Updated: May 4, 2022
Vulnerability identifier: #VU50234
CSH Severity: High
CVSS v4.0: 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:Amber
CVE-ID: CVE-2021-1789
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: WebKitGTK
Affected software:
WPE WebKit
WebKitGTK+
WPE WebKit
WebKitGTK+
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a type confusion error in WebKit. A remote attacker can trick the victim to open a specially crafted website, trigger a type confusion error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2021-1789
Install updates from vendor's website.