CVE-2019-16982 : Vulnerability Insights and Analysis

FusionPBX up to v4.5.7 is vulnerable to XSS attacks due to an unsanitized "id" variable in a specific file.

Understanding CVE-2019-16982

This CVE identifies a security issue in FusionPBX that can be exploited for cross-site scripting (XSS) attacks.

What is CVE-2019-16982?

In FusionPBX up to version 4.5.7, a file called app\access_controls\access_control_nodes.php contains an unsanitized "id" variable in the URL, leading to HTML reflection vulnerabilities that can be leveraged for XSS attacks.

The Impact of CVE-2019-16982

The presence of this vulnerability allows malicious actors to inject and execute arbitrary scripts within the context of the affected site, potentially compromising user data and system integrity.

Technical Details of CVE-2019-16982

This section delves into the specifics of the vulnerability.

Vulnerability Description

The unsanitized "id" variable in the URL of access_control_nodes.php in FusionPBX up to v4.5.7 enables HTML reflection, creating an XSS vulnerability.

Affected Systems and Versions

Affected Version: FusionPBX up to v4.5.7
Specific File: app\access_controls\access_control_nodes.php

Exploitation Mechanism

By manipulating the unsanitized "id" variable in the URL, attackers can inject malicious scripts that will be executed within the context of the FusionPBX application.

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by FusionPBX promptly.
Implement input validation mechanisms to sanitize user inputs and prevent XSS attacks.

Long-Term Security Practices

Regularly update FusionPBX to the latest secure versions.
Conduct security audits and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Ensure that FusionPBX is regularly updated with the latest security patches to mitigate the risk of XSS attacks.