Permissions, Privileges, and Access Controls in Google Chrome - CVE-2021-21129

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Main Vulnerability Database Vulnerabilities #VU49707

Permissions, Privileges, and Access Controls in Google Chrome - CVE-2021-21129

Published: January 19, 2021 / Updated: March 30, 2021


Vulnerability identifier: #VU49707
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:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-21129
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: Public exploit is available

Vulnerability details

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

The vulnerability exists due to insufficient policy enforcement in File System API in Google Chrome. A remote attacker can trick the victim to visit a specially crafted website, bypass implemented security measures and gain access to sensitive information.


Affected software

Google Chrome
Microsoft Edge
Arch Linux
Gentoo Linux
Fedora
chromium (Debian package)
chromium

How to mitigate CVE-2021-21129

Update to version 88.0.4324.96.

Google Chrome - update to 88.0.4324.96
chromium (Debian package) - update to 88.0.4324.146-1~deb10u1
Microsoft Edge - update to 88.0.705.50
chromium - addressed in versions 88.0.4324.96-1.el7, 88.0.4324.96-1.el8, 88.0.4324.96-1.fc32, 88.0.4324.96-1.fc33, 88.0.4324.150-1.el7, 88.0.4324.150-1.el8

Links to Public Exploits and PoC-codes

External References

Related Security Bulletins