Use-after-free in Google Chrome - CVE-2021-21162

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Main Vulnerability Database Vulnerabilities #VU51125

Use-after-free in Google Chrome - CVE-2021-21162

Published: March 2, 2021


Vulnerability identifier: #VU51125
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-2021-21162
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 within the WebRTC component in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger use-after-free error and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.


Affected software

Google Chrome
Microsoft Edge
Gentoo Linux
Arch Linux
Fedora
chromium (Debian package)
chromium

How to mitigate CVE-2021-21162

Update to version 89.0.4389.72.

Google Chrome - update to 89.0.4389.72
chromium (Debian package) - update to 89.0.4389.114-1~deb10u1
Microsoft Edge - update to 89.0.774.45
chromium - addressed in versions 89.0.4389.82-1.el7, 89.0.4389.82-1.el8, 89.0.4389.82-1.fc32, 89.0.4389.82-1.fc33, 89.0.4389.82-1.fc34, 89.0.4389.90-3.fc33, 89.0.4389.90-3.fc34

External References

Related Security Bulletins