Input validation error in Google Chrome - CVE-2021-21231

Vulnerability identifier: #VU52624

CSH Severity: Low

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-21231

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied input in V8. A remote attacker can create a specially crafted web page, trick the victim into visiting it and gain access to sensitive information.

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

Install updates from vendor's website.

Google Chrome - update to 90.0.4430.93
chromium (Debian package) - update to 90.0.4430.93-1~deb10u1
Microsoft Edge - update to 90.0.818.51
chromium - addressed in versions 90.0.4430.93-1.el7, 90.0.4430.93-1.el8, 90.0.4430.93-1.fc32, 90.0.4430.93-1.fc33, 90.0.4430.93-1.fc34

• https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_26.html
• https://bugs.chromium.org/p/chromium/issues/detail?id=1198696

• Multiple vulnerabilities in Google Chrome
• Arch Linux update for vivaldi
• Multiple vulnerabilities in Microsoft Edge (Chromium-based)
• Gentoo update for Chromium, Google Chrome
• Debian update for chromium
• Fedora 34 update for chromium
• Fedora 32 update for chromium
• Fedora 33 update for chromium
• Fedora EPEL 8 update for chromium
• Fedora EPEL 7 update for chromium