Use-after-free in Google Chrome - CVE-2021-30602
Published: August 17, 2021 / Updated: August 19, 2021
Vulnerability identifier: #VU55873
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-2021-30602
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in WebRTC. A remote attacker can trick the victim to visit a specially crafted web page, 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.
Affected software
Google Chrome
Microsoft Edge
Gentoo Linux
Fedora
qt5-qtwebengine
chromium
Microsoft Edge
Gentoo Linux
Fedora
qt5-qtwebengine
chromium
How to mitigate CVE-2021-30602
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