Type Confusion in Google Chromium - CVE-2021-4056

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Main Vulnerability Database Vulnerabilities #VU58538

Type Confusion in Google Chromium - CVE-2021-4056

Published: December 6, 2021 / Updated: December 10, 2021


Vulnerability identifier: #VU58538
CSH Severity: High
CVSS v4: 8.6 [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]
CVE-ID: CVE-2021-4056
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a type confusion error within the loader component in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, 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.


Affected software

Google Chromium
Google Chrome
Microsoft Edge
Gentoo Linux
Arch Linux
Fedora
chromium
chromium (Debian package)
www-client/google-chrome
dev-qt/qtwebengine
www-client/chromium

How to mitigate CVE-2021-4056

Update to version 96.0.4664.93.

Google Chromium - update to 96.0.4664.93
Google Chrome - update to 96.0.4664.93
Microsoft Edge - update to 96.0.1054.53
chromium - addressed in versions 96.0.4664.110-2.el8, 96.0.4664.110-2.fc34, 96.0.4664.110-2.fc35, 96.0.4664.110-3.fc34, 96.0.4664.110-3.fc35
chromium (Debian package) - update to 97.0.4692.71-0.1~deb11u1
www-client/google-chrome - update to 101.0.1210.47
dev-qt/qtwebengine - update to 103.0.5060.53
www-client/chromium - update to 103.0.5060.53

External References

Related Security Bulletins