Heap-based buffer overflow in Google Chrome - CVE-2021-21192

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Main Vulnerability Database Vulnerabilities #VU51435

Heap-based buffer overflow in Google Chrome - CVE-2021-21192

Published: March 13, 2021 / Updated: March 15, 2021


Vulnerability identifier: #VU51435
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-2021-21192
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the tab groups implementation in Google Chrome. A remote attacker can create a specially crafted website, trick the victim into visiting it, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

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

How to mitigate CVE-2021-21192

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