Heap-based buffer overflow in Google Chromium - CVE-2021-37978

Vulnerability identifier: #VU57129

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-2021-37978

CWE-ID: CWE-122

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted HTML content in Blink. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Google Chromium
Google Chrome
Microsoft Edge
Gentoo Linux
Arch Linux
Fedora
qt5-qtwebengine
opera
chromium
chromium (Debian package)

Update to version 94.0.4606.81.

Google Chromium - update to 94.0.4606.81
Google Chrome - update to 94.0.4606.81
Microsoft Edge - update to 94.0.992.47
qt5-qtwebengine - addressed in versions 5.15.8-2.fc34, 5.15.8-2.fc35
opera - update to 80.0.4170.63-1
chromium - addressed in versions 94.0.4606.81-1.el8, 94.0.4606.81-1.fc33, 94.0.4606.81-1.fc34, 94.0.4606.81-1.fc35
chromium (Debian package) - update to 97.0.4692.71-0.1~deb11u1

• https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop.html
• https://crbug.com/1236318
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-37978

• Multiple vulnerabilities in Google Chrome
• Multiple vulnerabilities in Microsoft Edge
• Debian update for chromium
• Gentoo update for Chromium, Google Chrome
• Arch Linux update for opera
• Fedora 35 update for chromium
• Fedora 34 update for chromium
• Fedora EPEL 8 update for chromium
• Fedora 33 update for chromium
• Fedora 35 update for qt5-qtwebengine
• Fedora 34 update for qt5-qtwebengine