Heap-based buffer overflow in Google Chrome - CVE-2021-21128

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Main Vulnerability Database Vulnerabilities #VU49706

Heap-based buffer overflow in Google Chrome - CVE-2021-21128

Published: January 19, 2021 / Updated: January 19, 2021


Vulnerability identifier: #VU49706
CSH Severity: Medium
CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-21128
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 Blink. 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
Arch Linux
Gentoo Linux
Fedora
chromium (Debian package)
chromium

How to mitigate CVE-2021-21128

Update to version 88.0.4324.96.

Google Chrome - update to 88.0.4324.96
chromium (Debian package) - update to 88.0.4324.146-1~deb10u1
Microsoft Edge - update to 88.0.705.50
chromium - addressed in versions 88.0.4324.96-1.el7, 88.0.4324.96-1.el8, 88.0.4324.96-1.fc32, 88.0.4324.96-1.fc33, 88.0.4324.150-1.el7, 88.0.4324.150-1.el8

External References

Related Security Bulletins