Type Confusion in Google Chromium - CVE-2021-4078

Vulnerability identifier: #VU59666

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-2021-4078

CWE-ID: CWE-843

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a type confusion error within the V8 component in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger a type confusion error and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Google Chromium
Gentoo Linux
Fedora
qt5-qtwebengine
chromium
www-client/google-chrome
dev-qt/qtwebengine
www-client/chromium
chromium (Debian package)

Update to version 96.0.4664.93.

Google Chromium - update to 96.0.4664.93
qt5-qtwebengine - addressed in versions 5.15.8-2.fc34, 5.15.8-2.fc35
chromium - addressed in versions 96.0.4664.110-2.el8, 96.0.4664.110-2.fc34, 96.0.4664.110-2.fc35, 96.0.4664.110-3.fc34, 96.0.4664.110-3.fc35
www-client/google-chrome - update to 101.0.1210.47
dev-qt/qtwebengine - update to 103.0.5060.53
www-client/chromium - update to 103.0.5060.53
chromium (Debian package) - update to 97.0.4692.71-0.1~deb11u1

• https://chromereleases.googleblog.com/2021/12/stable-channel-update-for-desktop.html
• https://crbug.com/1268738

• Multiple vulnerabilities in Google Chrome
• Debian update for chromium
• Gentoo update for Chromium, Google Chrome, Microsoft Edge, QtWebEngine
• Fedora 34 update for chromium
• Fedora 35 update for chromium
• Fedora EPEL 8 update for chromium
• Fedora 35 update for chromium
• Fedora 34 update for chromium
• Fedora 35 update for qt5-qtwebengine
• Fedora 34 update for qt5-qtwebengine