CVE-2019-5175 : What You Need to Know

A vulnerability in the iocheckd service 'I/O-Check' in WAGO PFC200 Firmware version 03.02.02(14) allows command injection, potentially leading to OS command execution.

Understanding CVE-2019-5175

This CVE involves a command injection vulnerability in the iocheckd service of the WAGO PFC200 Firmware version 03.02.02(14).

What is CVE-2019-5175?

The vulnerability in the iocheckd service 'I/O-Check' in the WAGO PFC200 Firmware version 03.02.02(14) enables attackers to inject OS commands by manipulating a specific XML cache file and triggering its parsing through a crafted packet.

The Impact of CVE-2019-5175

Exploiting this vulnerability can allow malicious actors to execute arbitrary OS commands on the affected device, potentially leading to unauthorized access or further compromise.

Technical Details of CVE-2019-5175

This section provides detailed technical information about the CVE-2019-5175 vulnerability.

Vulnerability Description

The vulnerability in the iocheckd service 'I/O-Check' in the WAGO PFC200 Firmware version 03.02.02(14) allows for command injection by utilizing a specially crafted XML cache file to execute OS commands.

Affected Systems and Versions

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

Exploitation Mechanism

Attackers can write a specific XML cache file to a designated location on the device
By sending a specially crafted packet, the attacker triggers the parsing of the cache file
The value extracted from the XML file is used as an argument for the sprintf() function in the command that is later executed via a system() call

Mitigation and Prevention

Protecting systems from CVE-2019-5175 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-provided patches or updates to mitigate the vulnerability
Implement network segmentation to limit the impact of potential attacks
Monitor network traffic for any suspicious activity

Long-Term Security Practices

Regularly update firmware and software to address security vulnerabilities
Conduct security assessments and penetration testing to identify and remediate weaknesses

Patching and Updates

Stay informed about security advisories from the vendor
Apply patches promptly to ensure systems are protected against known vulnerabilities