CVE-2019-16965 : What You Need to Know

A command injection vulnerability in FusionPBX version 4.5.7 and earlier allows authenticated administrative attackers to execute arbitrary commands on the host.

Understanding CVE-2019-16965

This CVE involves a security issue in FusionPBX that enables attackers to run commands on the host system.

What is CVE-2019-16965?

This vulnerability arises from the lack of proper input validation in resources/cmd.php, granting authenticated administrative users the ability to execute commands on the host under the www-data account.

The Impact of CVE-2019-16965

The vulnerability can be exploited by attackers with administrative privileges, potentially leading to unauthorized command execution on the affected system.

Technical Details of CVE-2019-16965

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

Vulnerability Description

The vulnerability exists in resources/cmd.php within FusionPBX up to version 4.5.7, allowing for command injection due to inadequate input validation.

Affected Systems and Versions

FusionPBX version 4.5.7 and earlier

Exploitation Mechanism

Attackers with authenticated administrative access can leverage the vulnerability to execute arbitrary commands on the host system under the www-data account.

Mitigation and Prevention

Protecting systems from CVE-2019-16965 requires immediate action and long-term security measures.

Immediate Steps to Take

Update FusionPBX to a patched version that addresses the command injection vulnerability
Monitor system logs for any suspicious activities
Restrict administrative access to trusted users

Long-Term Security Practices

Implement strict input validation mechanisms in web applications
Conduct regular security audits and penetration testing
Educate administrators on secure coding practices

Patching and Updates

Apply security patches provided by FusionPBX promptly
Stay informed about security advisories and updates from the vendor