Integer underflow in Google Chromium - CVE-2021-4066

Vulnerability identifier: #VU58549

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-2021-4066

CWE-ID: CWE-191

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 integer underflow. A remote attacker can send a specially crafted request to the affected application, trigger integer underflow and execute arbitrary code on the target system.

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

Google Chromium
Google Chrome
Microsoft Edge
Gentoo Linux
Arch Linux
Fedora
chromium
chromium (Debian package)
www-client/google-chrome
dev-qt/qtwebengine
www-client/chromium

Update to version 96.0.4664.93.

Google Chromium - update to 96.0.4664.93
Google Chrome - update to 96.0.4664.93
Microsoft Edge - update to 96.0.1054.53
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
chromium (Debian package) - update to 97.0.4692.71-0.1~deb11u1
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

• https://chromereleases.googleblog.com/2021/12/stable-channel-update-for-desktop.html
• https://crbug.com/1274499
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-4066

• Multiple vulnerabilities in Google Chrome
• Multiple vulnerabilities in Microsoft Edge (Chromium-based)
• Arch Linux update for chromium
• Arch Linux update for vivaldi
• 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