CVE-2020-6561 Explained : Impact and Mitigation

Inappropriate implementation in Content Security Policy in Google Chrome prior to 85.0.4183.83 allowed a remote attacker to leak cross-origin data via a crafted HTML page.

Understanding CVE-2020-6561

This CVE involves a vulnerability in Google Chrome that could be exploited by a remote attacker to access cross-origin data.

What is CVE-2020-6561?

The vulnerability in Content Security Policy implementation in Google Chrome versions prior to 85.0.4183.83 could enable a remote attacker to leak cross-origin data through a specifically designed HTML page.

The Impact of CVE-2020-6561

The vulnerability could lead to unauthorized access to sensitive cross-origin data, potentially compromising user privacy and security.

Technical Details of CVE-2020-6561

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

Vulnerability Description

The inappropriate implementation in the Content Security Policy of Google Chrome versions before 85.0.4183.83 allowed for the leakage of cross-origin data through a maliciously crafted HTML page.

Affected Systems and Versions

Product: Chrome
Vendor: Google
Versions Affected: Less than 85.0.4183.83

Exploitation Mechanism

The vulnerability could be exploited by a remote attacker through a specially created HTML page to access and leak cross-origin data.

Mitigation and Prevention

Protecting systems from CVE-2020-6561 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Google Chrome to version 85.0.4183.83 or later to mitigate the vulnerability.
Avoid visiting untrusted websites or clicking on suspicious links.
Implement strict Content Security Policies to limit cross-origin data leakage.

Long-Term Security Practices

Regularly update software and applications to patch known vulnerabilities.
Educate users on safe browsing practices and the importance of keeping software up to date.

Patching and Updates

Google has released updates addressing this vulnerability. Ensure all systems are updated to the latest version of Chrome to prevent exploitation.