Out-of-bounds write in Google Chrome - CVE-2021-21225

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Main Vulnerability Database Vulnerabilities #VU52374

Out-of-bounds write in Google Chrome - CVE-2021-21225

Published: April 20, 2021


Vulnerability identifier: #VU52374
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-2021-21225
CWE-ID: CWE-787
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 boundary error when processing untrusted input within the V8 browser engine in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.


Affected software

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

How to mitigate CVE-2021-21225

Install updates from vendor's website.

Google Chrome - update to 90.0.4430.85
chromium (Debian package) - update to 90.0.4430.85-1~deb10u1
Microsoft Edge - update to 90.0.818.46
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

External References

Related Security Bulletins