Integer overflow in Google Chrome - CVE-2021-21220
Published: April 13, 2021 / Updated: February 20, 2022
Vulnerability identifier: #VU52059
CSH Severity: Medium
CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-21220
CWE-ID: CWE-190
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 integer overflow in V8 engine in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger integer overflow and execute arbitrary code on the target system.
Note, successful exploitation of this vulnerability may result in complete compromise of vulnerable system but requires additional vulnerability to escape browser's sandbox.
Affected software
Google Chrome
Microsoft Edge
Gentoo Linux
Fedora
chromium
Microsoft Edge
Gentoo Linux
Fedora
chromium
How to mitigate CVE-2021-21220
Install update 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