Type Confusion in Google Chrome - CVE-2021-30599
Published: August 17, 2021 / Updated: August 19, 2021
Vulnerability identifier: #VU55870
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-2021-30599
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 in V8. 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 Chrome
Microsoft Edge
Gentoo Linux
Fedora
qt5-qtwebengine
chromium
Microsoft Edge
Gentoo Linux
Fedora
qt5-qtwebengine
chromium
How to mitigate CVE-2021-30599
Install updates from vendor's website.
Google Chrome - update to 92.0.4515.159
Microsoft Edge - update to 92.0.902.78
qt5-qtwebengine - update to 5.15.8-2.fc34
chromium - addressed in versions 93.0.4577.63-1.el8, 93.0.4577.63-1.fc33, 93.0.4577.63-1.fc34, 93.0.4577.63-1.fc35
Microsoft Edge - update to 92.0.902.78
qt5-qtwebengine - update to 5.15.8-2.fc34
chromium - addressed in versions 93.0.4577.63-1.el8, 93.0.4577.63-1.fc33, 93.0.4577.63-1.fc34, 93.0.4577.63-1.fc35