Heap-based buffer overflow in Google Chrome - CVE-2021-21156

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Main Vulnerability Database Vulnerabilities #VU50752

Heap-based buffer overflow in Google Chrome - CVE-2021-21156

Published: February 16, 2021 / Updated: February 17, 2021


Vulnerability identifier: #VU50752
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-2021-21156
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 V8. 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 (Debian package)
chromium

How to mitigate CVE-2021-21156

Update to version 88.0.4324.182.

Google Chrome - update to 88.0.4324.182
chromium (Debian package) - update to 88.0.4324.182-1~deb10u1
Microsoft Edge - update to 88.0.705.74
chromium - addressed in versions 88.0.4324.182-1.el7, 88.0.4324.182-1.el8, 88.0.4324.182-1.fc32, 88.0.4324.182-1.fc33, 88.0.4324.182-2.el7, 88.0.4324.182-2.el8, 88.0.4324.182-2.fc32, 89.0.4389.82-1.el7, 89.0.4389.82-1.el8, 89.0.4389.82-1.fc32

External References

Related Security Bulletins