Heap-based buffer overflow in Google Chrome - CVE-2021-30521

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Main Vulnerability Database Vulnerabilities #VU53544

Heap-based buffer overflow in Google Chrome - CVE-2021-30521

Published: May 25, 2021 / Updated: May 25, 2021


Vulnerability identifier: #VU53544
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-2021-30521
CWE-ID: CWE-122
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 HTML content in Autofill. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a heap-based buffer overflow and execute arbitrary code on the target system.


Affected software

Google Chrome
Microsoft Edge
Gentoo Linux
Arch Linux
Fedora
chromium

How to mitigate CVE-2021-30521

Update to version 91.0.4472.77.

Google Chrome - update to 91.0.4472.77
Microsoft Edge - update to 91.0.864.37
chromium - addressed in versions 91.0.4472.114-1.el8, 91.0.4472.114-1.fc33, 91.0.4472.114-1.fc34, 91.0.4472.114-2.el8, 91.0.4472.114-2.fc33, 91.0.4472.164-1.el8

External References

Related Security Bulletins