CVE-2019-5161 Explained : Impact and Mitigation

A vulnerability in the Cloud Connectivity feature of WAGO PFC200 Firmware versions 03.02.02(14), 03.01.07(13), and 03.00.39(12) allows for remote code execution, potentially granting attackers root privileges.

Understanding CVE-2019-5161

This CVE involves a critical security issue in specific versions of WAGO PFC200 Firmware that can be exploited for malicious purposes.

What is CVE-2019-5161?

This CVE identifies a vulnerability in the Cloud Connectivity functionality of WAGO PFC200 Firmware versions 03.02.02(14), 03.01.07(13), and 03.00.39(12) that enables remote code execution.

The Impact of CVE-2019-5161

The vulnerability allows attackers to execute arbitrary shell scripts remotely, potentially leading to unauthorized access and control over the affected system.

Technical Details of CVE-2019-5161

This section delves into the technical aspects of the CVE.

Vulnerability Description

The flaw in the Cloud Connectivity feature of WAGO PFC200 Firmware versions 03.02.02(14), 03.01.07(13), and 03.00.39(12) permits the execution of shell scripts through specially crafted XML files, resulting in unauthorized access.

Affected Systems and Versions

Product: WAGO PFC200 Firmware
Vendor: Wago
Vulnerable Versions: 03.02.02(14), 03.01.07(13), 03.00.39(12)

Exploitation Mechanism

By manipulating XML files, attackers can instruct the Cloud Connectivity service to download and execute a shell script, gaining root privileges on the target system.

Mitigation and Prevention

Protecting systems from CVE-2019-5161 requires immediate actions and long-term security measures.

Immediate Steps to Take

Disable Cloud Connectivity feature if not essential
Implement network segmentation to limit exposure
Monitor network traffic for suspicious activities

Long-Term Security Practices

Regularly update firmware and software patches
Conduct security audits and penetration testing
Educate users on safe computing practices

Patching and Updates

Apply vendor-recommended patches promptly
Stay informed about security advisories and updates