Heap-based buffer overflow in Google Chromium - CVE-2021-37986

Vulnerability identifier: #VU57449

CSH Severity: Medium

CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-37986

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 Settings. 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
Arch Linux
Gentoo Linux
Fedora
vivaldi
chromium
chromium (Debian package)

Update to version 95.0.4638.54.

Google Chromium - update to 95.0.4638.54
Google Chrome - update to 95.0.4638.54
Microsoft Edge - update to 95.0.1020.30
vivaldi - update to 5.0.2497.24-1
chromium - update to 95.0.4638.54-1
chromium (Debian package) - update to 97.0.4692.71-0.1~deb11u1
chromium - addressed in versions 99.0.4844.51-1.el7, 99.0.4844.51-1.el8

• https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_19.html
• https://crbug.com/1242404
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-37986

• Multiple vulnerabilities in Google Chrome
• Multiple vulnerabilities in Microsoft Edge
• Arch Linux update for opera
• Debian update for chromium
• Gentoo update for Chromium, Google Chrome
• Arch Linux update for chromium
• Arch Linux update for vivaldi
• Fedora EPEL 8 update for chromium
• Fedora EPEL 7 update for chromium