Type Confusion in Google Chrome - CVE-2021-30551

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Main Vulnerability Database Vulnerabilities #VU54006

Type Confusion in Google Chrome - CVE-2021-30551

Published: June 9, 2021 / Updated: August 22, 2021


Vulnerability identifier: #VU54006
CSH Severity: Critical
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-2021-30551
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability: The vulnerability is being exploited in the wild

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 V8 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.

Note, the vulnerability is being actively exploited in the wild.


Affected software

Google Chrome
Microsoft Edge
Gentoo Linux
Arch Linux
Fedora
qt5-qtwebengine
chromium
www-client/google-chrome
dev-qt/qtwebengine
www-client/chromium

How to mitigate CVE-2021-30551

Update to version 91.0.4472.101.

Google Chrome - update to 91.0.4472.101
Microsoft Edge - update to 91.0.864.48
qt5-qtwebengine - update to 5.15.8-2.fc34
chromium - addressed in versions 91.0.4472.114-1.el8, 91.0.4472.114-1.fc33, 91.0.4472.114-1.fc34, 91.0.4472.114-2.el8, 91.0.4472.114-2.fc33, 91.0.4472.164-1.el8
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

Links to Public Exploits and PoC-codes

External References

Related Security Bulletins