CVE-2020-15961 Explained : Impact and Mitigation

Insufficient policy validation in extensions in Google Chrome prior to 85.0.4183.121 allowed an attacker to potentially perform a sandbox escape via a crafted Chrome Extension.

Understanding CVE-2020-15961

This CVE relates to a security vulnerability in Google Chrome that could be exploited by convincing a user to install a malicious extension.

What is CVE-2020-15961?

The vulnerability involves insufficient policy validation in Chrome extensions before version 85.0.4183.121.
An attacker could exploit this flaw to escape the browser's sandbox through a specially crafted extension.

The Impact of CVE-2020-15961

Attackers could execute arbitrary code on the victim's system.
Malicious extensions could compromise user data and system integrity.

Technical Details of CVE-2020-15961

This section provides more in-depth technical information about the vulnerability.

Vulnerability Description

Insufficient policy validation in Chrome extensions allowed for potential sandbox escapes.

Affected Systems and Versions

Product: Google Chrome
Versions Affected: < 85.0.4183.121

Exploitation Mechanism

Attackers could exploit the vulnerability by tricking users into installing a malicious extension.

Mitigation and Prevention

Protecting systems from CVE-2020-15961 requires immediate action and long-term security practices.

Immediate Steps to Take

Update Google Chrome to version 85.0.4183.121 or later.
Avoid installing extensions from untrusted sources.
Regularly monitor for suspicious extension behavior.

Long-Term Security Practices

Educate users on safe browsing habits and extension installation.
Implement network and endpoint security measures to detect and prevent malicious activities.

Patching and Updates

Stay informed about security updates for Google Chrome and apply patches promptly.