CVE-2019-5168 : Security Advisory and Response

This CVE-2019-5168 article provides insights into a command injection vulnerability in the WAGO PFC200 Firmware version 03.02.02(14) affecting the 'I/O-Check' function.

Understanding CVE-2019-5168

This CVE involves a vulnerability in the 'I/O-Check' function of the WAGO PFC 200 version 03.02.02(14) iocheckd service, allowing an attacker to exploit a command injection flaw.

What is CVE-2019-5168?

An exploitable command injection vulnerability exists in the iocheckd service 'I/O-Check' function of the WAGO PFC 200 version 03.02.02(14). Attackers can send a specially crafted XML cache file to execute arbitrary commands.

The Impact of CVE-2019-5168

Attackers can execute arbitrary commands on affected systems, leading to unauthorized access and potential system compromise.

Technical Details of CVE-2019-5168

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability allows attackers to inject commands by manipulating the domainname value extracted from an XML file, leading to unauthorized command execution.

Affected Systems and Versions

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

Exploitation Mechanism

Attackers exploit the vulnerability by sending a crafted XML cache file to the iocheckd service, utilizing the extracted domainname value to execute unauthorized commands.

Mitigation and Prevention

Protecting systems from CVE-2019-5168 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-supplied patches or updates to mitigate the vulnerability.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly monitor and audit system logs for any suspicious activities.
Conduct security training for employees to raise awareness of potential threats.

Patching and Updates

Regularly check for security advisories from the vendor and apply patches promptly to address known vulnerabilities.