CVE-2019-12871 Explained : Impact and Mitigation

A vulnerability has been identified in PHOENIX CONTACT PC Worx (up to version 1.86), PC Worx Express (up to version 1.86), and Config+ (up to version 1.86) that could lead to remote code execution through a Use-After-Free scenario.

Understanding CVE-2019-12871

This CVE involves manipulating project files in PC Worx or Config+ to exploit the vulnerability.

What is CVE-2019-12871?

The vulnerability allows attackers to execute remote code by replacing unaltered project files with manipulated ones on the application programming workstation.

The Impact of CVE-2019-12871

Exploiting this vulnerability could result in a Use-After-Free scenario, enabling remote code execution by malicious actors.

Technical Details of CVE-2019-12871

This section provides more technical insights into the vulnerability.

Vulnerability Description

A manipulated PC Worx or Config+ project file can lead to a Use-After-Free scenario and remote code execution.

Affected Systems and Versions

PHOENIX CONTACT PC Worx up to version 1.86
PC Worx Express up to version 1.86
Config+ up to version 1.86

Exploitation Mechanism

To exploit the vulnerability, attackers need to gain access to unaltered project files and replace them with manipulated files on the programming workstation.

Mitigation and Prevention

Protecting systems from CVE-2019-12871 is crucial for maintaining security.

Immediate Steps to Take

Update PC Worx, PC Worx Express, and Config+ to the latest versions
Monitor and restrict access to project files
Implement network segmentation to limit exposure

Long-Term Security Practices

Conduct regular security training for employees
Employ strong access controls and authentication mechanisms
Perform regular security audits and assessments

Patching and Updates

Apply patches and updates provided by PHOENIX CONTACT to address the vulnerability