CVE-2020-12718 : Security Advisory and Response

PHP-Fusion 9.03.50 stored XSS vulnerability in administration/comments.php allows authenticated attackers to exploit the Preview Comment feature.

Understanding CVE-2020-12718

In PHP-Fusion 9.03.50, a stored XSS vulnerability in the Preview Comment feature can be abused by authenticated attackers.

What is CVE-2020-12718?

This CVE refers to a stored XSS vulnerability in PHP-Fusion 9.03.50, specifically in the administration/comments.php file.

The Impact of CVE-2020-12718

The vulnerability allows attackers to bypass protection mechanisms by utilizing HTML event handlers like ontoggle.

Technical Details of CVE-2020-12718

PHP-Fusion 9.03.50 is susceptible to a stored XSS vulnerability in the Preview Comment feature.

Vulnerability Description

An authenticated attacker can exploit the stored XSS vulnerability in the Preview Comment feature of PHP-Fusion 9.03.50.

Affected Systems and Versions

Product: PHP-Fusion 9.03.50
Vendor: PHP-Fusion
Version: n/a

Exploitation Mechanism

Attackers can bypass protection mechanisms by using HTML event handlers such as ontoggle.

Mitigation and Prevention

Steps to address and prevent the CVE-2020-12718 vulnerability.

Immediate Steps to Take

Update PHP-Fusion to the latest version.
Implement input validation and output encoding to mitigate XSS attacks.
Monitor and review user-generated content for malicious scripts.

Long-Term Security Practices

Regularly audit and review code for security vulnerabilities.
Educate users on safe browsing habits and awareness of social engineering tactics.

Patching and Updates

Stay informed about security updates and patches released by PHP-Fusion.