Permissions, Privileges, and Access Controls in Google Chrome - CVE-2021-21229

Vulnerability identifier: #VU52613

CSH Severity: Medium

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

CVE-ID: CVE-2021-21229

CWE-ID: CWE-264

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to incorrect security UI in downloads. A remote attacker can trick the victim to visit a specially crafted website, bypass implemented security measures and compromise the affected system.

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=1198165

• 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