CVE-2020-6399 : Exploit Details and Defense Strategies

Google Chrome prior to 80.0.3987.87 has an insufficient policy enforcement vulnerability in AppCache, allowing a remote attacker to leak cross-origin data.

Understanding CVE-2020-6399

This CVE involves a security issue in Google Chrome that could lead to the leakage of cross-origin data.

What is CVE-2020-6399?

CVE-2020-6399 is a vulnerability in Google Chrome versions before 80.0.3987.87 that enables a remote attacker to extract cross-origin data through a specifically crafted HTML page.

The Impact of CVE-2020-6399

The vulnerability allows malicious actors to access sensitive data from other origins, potentially compromising user privacy and security.

Technical Details of CVE-2020-6399

This section delves into the technical aspects of the CVE.

Vulnerability Description

The flaw arises from insufficient policy enforcement in AppCache within Google Chrome, which permits unauthorized data access.

Affected Systems and Versions

Product: Chrome
Vendor: Google
Versions Affected: < 80.0.3987.87
Version Type: Custom

Exploitation Mechanism

Attackers can exploit this vulnerability by enticing users to visit a malicious website containing a specially crafted HTML page.

Mitigation and Prevention

Protecting systems from CVE-2020-6399 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.

Long-Term Security Practices

Regularly update browsers and software to patch known vulnerabilities.
Implement security awareness training to educate users on safe browsing habits.

Patching and Updates

Ensure timely installation of security patches and updates provided by Google to address CVE-2020-6399.