CVE-2019-16967 : Vulnerability Insights and Analysis

A vulnerability was found in Manager versions 13.x before 13.0.2.6 and 15.x before 15.0.6, particularly in FreePBX 14.0.10.3. The issue allows for XSS attacks through unsanitized input.

Understanding CVE-2019-16967

This CVE identifies a security vulnerability in the Manager module of FreePBX versions 13.x and 15.x, allowing for potential XSS attacks.

What is CVE-2019-16967?

This CVE pertains to a flaw in the Manager module form of FreePBX, where unsanitized input from a URL parameter is displayed as HTML, making it vulnerable to cross-site scripting attacks.

The Impact of CVE-2019-16967

The vulnerability could be exploited by an attacker to execute malicious scripts in the context of a user's browser, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2019-16967

This section provides more in-depth technical information about the vulnerability.

Vulnerability Description

The vulnerability arises from the Manager module form in FreePBX, where an unsanitized managerdisplay variable from the URL is directly rendered as HTML, enabling XSS attacks.

Affected Systems and Versions

Manager versions 13.x before 13.0.2.6
Manager versions 15.x before 15.0.6
FreePBX 14.0.10.3

Exploitation Mechanism

To exploit this vulnerability, an attacker could send a crafted GET request to /config.php?type=tool&display=manager, injecting malicious scripts into the application.

Mitigation and Prevention

Protecting systems from CVE-2019-16967 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply the latest security patches provided by the vendor.
Implement input validation mechanisms to sanitize user inputs.
Monitor and filter user-generated content to prevent malicious scripts.

Long-Term Security Practices

Conduct regular security assessments and audits of web applications.
Educate developers and users on secure coding practices.
Stay informed about emerging security threats and best practices.

Patching and Updates

Ensure that the affected Manager and FreePBX versions are updated to the patched versions (13.0.2.6 and 15.0.6, respectively) to mitigate the vulnerability.