Use-after-free in Google Chrome - CVE-2021-21157

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Main Vulnerability Database Vulnerabilities #VU50753

Use-after-free in Google Chrome - CVE-2021-21157

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


Vulnerability identifier: #VU50753
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-21157
CWE-ID: CWE-416
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 use-after-free error within Web Sockets in Google Chrome. A remote attacker can trick the victim into visiting a specially crafted web page, trigger a use-after-free error and gain access to sensitive information.


Affected software

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

How to mitigate CVE-2021-21157

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