CVE-2019-5157 : Vulnerability Insights and Analysis

WAGO PFC200 Firmware versions 03.02.02(14), 03.01.07(13), and 03.00.39(12) are affected by a command injection vulnerability in the Cloud Connectivity feature. This vulnerability allows attackers to execute OS commands through a specific parameter, posing a security risk.

Understanding CVE-2019-5157

This CVE involves a command injection vulnerability in WAGO PFC200 Firmware versions 03.02.02(14), 03.01.07(13), and 03.00.39(12) that can be exploited for unauthorized command execution.

What is CVE-2019-5157?

The vulnerability in the Cloud Connectivity feature of WAGO PFC200 Firmware versions allows attackers to insert malicious OS commands into a specific parameter, potentially leading to unauthorized command execution.

The Impact of CVE-2019-5157

The vulnerability enables threat actors to execute arbitrary commands within the Firmware Update command, compromising the integrity and security of the affected systems.

Technical Details of CVE-2019-5157

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The Cloud Connectivity feature of WAGO PFC200 Firmware versions 03.02.02(14), 03.01.07(13), and 03.00.39(12) is susceptible to command injection. Attackers can exploit the TimeoutUnconfirmed parameter to inject OS commands.

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

The vulnerability allows threat actors to insert malicious OS commands into the TimeoutUnconfirmed parameter within the Firmware Update command, leading to unauthorized command execution.

Mitigation and Prevention

Protecting systems from CVE-2019-5157 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the affected WAGO PFC200 Firmware to a patched version that addresses the command injection vulnerability.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.
Educate users and administrators about secure practices to prevent exploitation.

Patching and Updates

Ensure timely installation of security patches and updates provided by WAGO to mitigate the command injection vulnerability in the affected firmware versions.