CVE-2019-5167 : Vulnerability Insights and Analysis

A command injection vulnerability in the WAGO PFC200 Firmware version 03.02.02(14) allows exploitation of the iocheckd service through crafted DNS values.

Understanding CVE-2019-5167

This CVE involves a security issue in the I/O-Check function of the WAGO PFC200 Firmware.

What is CVE-2019-5167?

The vulnerability enables attackers to perform command injection by manipulating DNS values in the iocheckd service.

The Impact of CVE-2019-5167

The vulnerability can lead to unauthorized command execution, potentially compromising the system's integrity and confidentiality.

Technical Details of CVE-2019-5167

This section provides in-depth technical insights into the CVE.

Vulnerability Description

The flaw allows malicious actors to inject commands into the system via the iocheckd service, exploiting the DNS values.

Affected Systems and Versions

Product: WAGO PFC200 Firmware
Vendor: Wago
Version: 03.02.02(14)

Exploitation Mechanism

Attackers exploit the vulnerability by manipulating DNS values in the iocheckd service.

Mitigation and Prevention

Protecting systems from CVE-2019-5167 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update the firmware to a patched version.
Implement network segmentation to limit the attack surface.
Monitor network traffic for suspicious activities.

Long-Term Security Practices

Conduct regular security audits and assessments.
Educate users on safe computing practices.
Employ intrusion detection and prevention systems.

Patching and Updates

Apply security patches provided by Wago to address the vulnerability.