CVE-2020-6394 : Exploit Details and Defense Strategies

Insufficient policy enforcement in Blink in Google Chrome prior to 80.0.3987.87 allowed a remote attacker to bypass content security policy via a crafted HTML page.

Understanding CVE-2020-6394

This CVE relates to a vulnerability in Google Chrome that could be exploited by a remote attacker to bypass content security policy.

What is CVE-2020-6394?

CVE-2020-6394 is a security vulnerability in Google Chrome that involves insufficient policy enforcement in Blink, allowing attackers to bypass content security policy through a specially crafted HTML page.

The Impact of CVE-2020-6394

The vulnerability could be exploited by a remote attacker to circumvent content security policy, potentially leading to unauthorized access or execution of malicious code on affected systems.

Technical Details of CVE-2020-6394

This section provides more technical insights into the CVE-2020-6394 vulnerability.

Vulnerability Description

The vulnerability arises from insufficient policy enforcement in Blink in Google Chrome versions prior to 80.0.3987.87, enabling attackers to bypass content security policy using a malicious HTML page.

Affected Systems and Versions

Product: Chrome
Vendor: Google
Versions Affected: Less than 80.0.3987.87
Version Type: Custom

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious HTML page to bypass content security policy in affected versions of Google Chrome.

Mitigation and Prevention

To address CVE-2020-6394 and enhance security, follow these mitigation and prevention measures:

Immediate Steps to Take

Update Google Chrome to version 80.0.3987.87 or later to mitigate the vulnerability.
Exercise caution when visiting unknown or untrusted websites to minimize the risk of exploitation.

Long-Term Security Practices

Regularly update browsers and software to the latest versions to patch known vulnerabilities.
Implement robust content security policies and practices to prevent similar exploits in the future.

Patching and Updates

Stay informed about security advisories and updates from Google Chrome to promptly apply patches and fixes for vulnerabilities like CVE-2020-6394.