CVE-2020-6519 : Exploit Details and Defense Strategies

A policy bypass vulnerability in Google Chrome before version 84.0.4147.89 allowed remote attackers to evade content security policy controls.

Understanding CVE-2020-6519

What is CVE-2020-6519?

This CVE refers to a security flaw in Google Chrome that enabled attackers to bypass content security policy through a specially crafted HTML page.

The Impact of CVE-2020-6519

The vulnerability could be exploited by remote attackers to circumvent security controls, potentially leading to unauthorized access or other malicious activities.

Technical Details of CVE-2020-6519

Vulnerability Description

The issue involved a policy bypass in the Content Security Policy (CSP) of Google Chrome versions prior to 84.0.4147.89.

Affected Systems and Versions

Product: Chrome
Vendor: Google
Versions Affected: < 84.0.4147.89

Exploitation Mechanism

Attackers could exploit this vulnerability by creating a malicious HTML page that could bypass the CSP restrictions in affected Chrome versions.

Mitigation and Prevention

Immediate Steps to Take

Update Google Chrome to version 84.0.4147.89 or later to mitigate the vulnerability.
Be cautious while browsing untrusted websites to minimize the risk of encountering malicious content.

Long-Term Security Practices

Regularly update browsers and other software to patch known vulnerabilities.
Implement a robust content security policy to prevent similar bypasses in the future.

Patching and Updates

Ensure timely installation of security updates and patches provided by Google to address vulnerabilities like CVE-2020-6519.