Use-after-free in Google Chrome - CVE-2021-21206
Published: April 14, 2021 / Updated: February 20, 2022
Vulnerability identifier: #VU52198
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-2021-21206
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in Blink in Google Chrome. 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
chromium
Microsoft Edge
Gentoo Linux
Fedora
chromium
How to mitigate CVE-2021-21206
Install updates from vendor's website.
Google Chrome - update to 89.0.4389.128
Microsoft Edge - update to 89.0.774.77
chromium - addressed in versions 90.0.4430.93-1.el7, 90.0.4430.93-1.el8, 90.0.4430.93-1.fc32, 90.0.4430.93-1.fc33, 90.0.4430.93-1.fc34
Microsoft Edge - update to 89.0.774.77
chromium - addressed in versions 90.0.4430.93-1.el7, 90.0.4430.93-1.el8, 90.0.4430.93-1.fc32, 90.0.4430.93-1.fc33, 90.0.4430.93-1.fc34