Use-after-free in Google Chrome - CVE-2021-21191

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Main Vulnerability Database Vulnerabilities #VU51434

Use-after-free in Google Chrome - CVE-2021-21191

Published: March 13, 2021


Vulnerability identifier: #VU51434
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-2021-21191
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 WebRTC component in Google Chrome. A remote attacker can trick the victim top open a specially crafted website, 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
Arch Linux
Gentoo Linux
Fedora
chromium (Debian package)
chromium

How to mitigate CVE-2021-21191

Install updates from vendor's website.

Google Chrome - update to 89.0.4389.90
chromium (Debian package) - update to 89.0.4389.114-1~deb10u1
Microsoft Edge - update to 89.0.774.54
chromium - addressed in versions 89.0.4389.90-3.el7, 89.0.4389.90-3.el8, 89.0.4389.90-3.fc32

External References

Related Security Bulletins