CVE-2019-5166 Explained : Impact and Mitigation
Learn about CVE-2019-5166, a stack buffer overflow vulnerability in WAGO PFC200 Firmware version 03.02.02(14) allowing attackers to execute arbitrary code. Find mitigation steps and long-term security practices here.
The WAGO PFC 200 version 03.02.02(14) firmware has a vulnerability in its iocheckd service called 'I/O-Check', allowing attackers to execute arbitrary code through a stack buffer overflow.
Understanding CVE-2019-5166
This CVE involves a stack buffer overflow vulnerability in the WAGO PFC 200 firmware version 03.02.02(14).
What is CVE-2019-5166?
A stack buffer overflow vulnerability in the iocheckd service 'I/O-Check' of WAGO PFC 200 version 03.02.02(14) allows attackers to trigger code execution by exploiting a specially crafted XML cache file.
The Impact of CVE-2019-5166
Exploiting this vulnerability can lead to arbitrary code execution on the affected device, potentially compromising its security and integrity.
Technical Details of CVE-2019-5166
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability in the iocheckd service of WAGO PFC 200 version 03.02.02(14) enables a stack buffer overflow when processing a specially crafted XML cache file.
Affected Systems and Versions
- Product: WAGO PFC200 Firmware
- Vendor: Wago
- Version: 03.02.02(14)
Exploitation Mechanism
By placing a malicious XML cache file in a specific location on the device or sending a specially crafted packet, an attacker can trigger the stack buffer overflow and execute arbitrary code.
Mitigation and Prevention
Protecting systems from CVE-2019-5166 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-supplied patches or updates to mitigate the vulnerability.
- Monitor network traffic for any signs of exploitation.
- Restrict network access to vulnerable devices.
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
- Install the latest firmware updates provided by Wago to patch the vulnerability and enhance system security.