CVE-2019-5179 : Exploit Details and Defense Strategies

A stack buffer overflow vulnerability in the 'I/O-Check' feature of the iocheckd service in WAGO PFC200 Firmware version 03.02.02(14) allows attackers to execute arbitrary code by sending a specially crafted packet.

Understanding CVE-2019-5179

This CVE involves a critical vulnerability in WAGO PFC200 devices that can be exploited by malicious actors to compromise the system.

What is CVE-2019-5179?

The vulnerability is a stack buffer overflow in the 'I/O-Check' feature of the iocheckd service in WAGO PFC200 Firmware version 03.02.02(14). It enables attackers to trigger the parsing of a cache file using a specifically crafted packet.

The Impact of CVE-2019-5179

Exploitation of this vulnerability can lead to arbitrary code execution, potentially allowing attackers to take control of the affected device and compromise its integrity and confidentiality.

Technical Details of CVE-2019-5179

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability is a stack buffer overflow in the 'I/O-Check' feature of the iocheckd service in WAGO PFC200 Firmware version 03.02.02(14). Attackers can exploit this flaw by sending a specially crafted packet to trigger the parsing of a cache file.

Affected Systems and Versions

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

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specifically crafted packet to initiate the parsing of the cache file, leading to the stack buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2019-5179 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update and patch all software and firmware to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate weaknesses.
Educate users and administrators about cybersecurity best practices.
Implement strong access controls and authentication mechanisms.
Consider deploying intrusion detection and prevention systems.
Stay informed about emerging threats and security updates.

Patching and Updates

WAGO PFC200 users should apply the latest firmware updates provided by the vendor to mitigate the vulnerability and enhance system security.