CVE-2021-40188 : Security Advisory and Response

PHPFusion 9.03.110 is affected by an arbitrary file upload vulnerability allowing attackers to execute code on the server.

Understanding CVE-2021-40188

PHPFusion 9.03.110 contains a vulnerability that enables an attacker to upload malicious files.

What is CVE-2021-40188?

This CVE identifies an arbitrary file upload vulnerability in PHPFusion 9.03.110 due to insufficient filtering of PHP extensions in the File Manager function.

The Impact of CVE-2021-40188

Attackers can exploit this vulnerability to upload harmful files and execute code on the server, potentially leading to unauthorized access or data manipulation.

Technical Details of CVE-2021-40188

PHPFusion 9.03.110's vulnerability is detailed below:

Vulnerability Description

The File Manager function of PHPFusion 9.03.110 fails to adequately filter PHP extensions, enabling malicious file uploads.

Affected Systems and Versions

Product: PHPFusion
Version: 9.03.110
Status: Affected

Exploitation Mechanism

Attackers can upload files with PHP extensions like ".php, .php7, .phtml, .php5" through the admin panel's File Manager, allowing them to execute arbitrary code.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-40188, consider the following:

Immediate Steps to Take

Update PHPFusion to a patched version that filters all PHP extensions.
Restrict file upload capabilities in the admin panel.

Long-Term Security Practices

Implement code reviews to detect and prevent insecure file upload functionalities.
Regularly monitor and audit file uploads for malicious content.

Patching and Updates

Apply security patches released by PHPFusion promptly to address this vulnerability.