CVE-2021-3172 : Vulnerability Insights and Analysis

PHP-Fusion v9.03.90 through v9.10.00 allows authenticated attackers to trigger a Distributed Denial of Service (DDoS) attack via the Polling feature.

Understanding CVE-2021-3172

This article delves into the details of CVE-2021-3172, a vulnerability in PHP-Fusion that enables authenticated attackers to conduct DDoS attacks using the Polling feature.

What is CVE-2021-3172?

CVE-2021-3172 refers to a security flaw in PHP-Fusion versions 9.03.90 to 9.10.00. This vulnerability permits authenticated malicious users to initiate a DDoS attack by exploiting the Polling feature.

The Impact of CVE-2021-3172

The impact of CVE-2021-3172 can be severe, leading to service disruption and unavailability due to the DDoS attacks executed by authenticated attackers.

Technical Details of CVE-2021-3172

Here are the technical specifics associated with CVE-2021-3172, outlining the vulnerability, affected systems, and exploitation methods.

Vulnerability Description

The vulnerability in PHP-Fusion versions 9.03.90 to 9.10.00 enables authenticated attackers to launch DDoS attacks through the Polling feature, resulting in service downtime and disruption.

Affected Systems and Versions

PHP-Fusion versions 9.03.90 to 9.10.00 are impacted by CVE-2021-3172. Users of these versions are susceptible to exploitation by authenticated attackers leveraging the Polling feature.

Exploitation Mechanism

Authenticated attackers can exploit this vulnerability by utilizing the Polling feature in PHP-Fusion versions 9.03.90 to 9.10.00 to execute DDoS attacks, causing service unavailability.

Mitigation and Prevention

To safeguard your systems from the risks posed by CVE-2021-3172, immediate actions and long-term security measures are crucial.

Immediate Steps to Take

Update PHP-Fusion to version 9.10.00 to mitigate the vulnerability and prevent DDoS attacks via the Polling feature.
Monitor system logs for any unusual activities that could indicate a DDoS attack being carried out.

Long-Term Security Practices

Regularly update PHP-Fusion and other software to ensure that known vulnerabilities are patched promptly.
Implement network monitoring tools to detect and mitigate DDoS attacks in real-time.

Patching and Updates

Stay informed about security updates released by PHP-Fusion and promptly apply patches to eliminate vulnerabilities and protect your systems.