Use-after-free in Google Chromium - CVE-2021-30633

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Main Vulnerability Database Vulnerabilities #VU56483

Use-after-free in Google Chromium - CVE-2021-30633

Published: September 13, 2021 / Updated: September 17, 2021


Vulnerability identifier: #VU56483
CSH Severity: Critical
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-2021-30633
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability: The vulnerability is being exploited in the wild

Vulnerability details

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the Indexed DB API component in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger use-after-free error and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Note, the vulnerability is being actively exploited in-the-wild.


Affected software

Google Chromium
Google Chrome
Microsoft Edge
Arch Linux
Gentoo Linux
Fedora
qt5-qtwebengine
chromium

How to mitigate CVE-2021-30633

Update to version 93.0.4577.82.

Google Chromium - update to 93.0.4577.82
Google Chrome - update to 93.0.4577.82
Microsoft Edge - update to 93.0.961.52
qt5-qtwebengine - addressed in versions 5.15.8-2.fc34, 5.15.8-2.fc35
chromium - addressed in versions 94.0.4606.61-1.el8, 94.0.4606.61-1.fc33, 94.0.4606.61-1.fc34, 94.0.4606.61-1.fc35

External References

Related Security Bulletins