CVE-2020-6400 : What You Need to Know

Google Chrome prior to 80.0.3987.87 had a vulnerability in CORS that could allow a remote attacker to leak cross-origin data.

Understanding CVE-2020-6400

This CVE involves an inappropriate implementation in CORS in Google Chrome.

What is CVE-2020-6400?

Inappropriate CORS implementation in Google Chrome before version 80.0.3987.87 could enable a malicious actor to extract cross-origin data by using a specially crafted HTML page.

The Impact of CVE-2020-6400

The vulnerability could be exploited by a remote attacker to access sensitive data from other origins, potentially leading to data leakage and privacy breaches.

Technical Details of CVE-2020-6400

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The flaw in CORS implementation in Google Chrome versions prior to 80.0.3987.87 allowed unauthorized access to cross-origin data, posing a security risk.

Affected Systems and Versions

Product: Chrome
Vendor: Google
Versions Affected: < 80.0.3987.87

Exploitation Mechanism

The vulnerability could be exploited by a remote attacker through a specially crafted HTML page to extract sensitive cross-origin data.

Mitigation and Prevention

Protecting systems from CVE-2020-6400 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Google Chrome to version 80.0.3987.87 or later to mitigate the vulnerability.
Avoid visiting untrusted websites or clicking on suspicious links to prevent potential exploitation.

Long-Term Security Practices

Regularly update browsers and software to patch known vulnerabilities.
Implement strict CORS policies and security measures to prevent unauthorized data access.

Patching and Updates

Google released a fix in version 80.0.3987.87 to address the CORS vulnerability.