CVE-2018-7855 : What You Need to Know
Learn about CVE-2018-7855 affecting Modicon M580, M340, Quantum, and Premium versions. Discover the impact, affected systems, exploitation, and mitigation steps.
The Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium versions have a vulnerability known as CWE-248 Uncaught Exception, potentially leading to a Denial of Service situation.
Understanding CVE-2018-7855
This CVE involves multiple vulnerabilities in Schneider Electric's Modicon series.
What is CVE-2018-7855?
A CWE-248 Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium. It can cause a Denial of Service when sending invalid breakpoint parameters to the controller over Modbus.
The Impact of CVE-2018-7855
The vulnerability can lead to a Denial of Service situation if the controller receives invalid breakpoint parameters through Modbus communication.
Technical Details of CVE-2018-7855
This section provides technical details about the vulnerability.
Vulnerability Description
The vulnerability is categorized as CWE-248 Uncaught Exception, affecting the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium versions.
Affected Systems and Versions
- Products: Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium
- Versions: Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium
Exploitation Mechanism
The vulnerability can be exploited by sending invalid breakpoint parameters to the controller over Modbus, triggering a Denial of Service situation.
Mitigation and Prevention
Protecting systems from CVE-2018-7855 is crucial for maintaining security.
Immediate Steps to Take
- Apply vendor-provided patches and updates promptly.
- Monitor network traffic for any suspicious activities related to Modbus communication.
Long-Term Security Practices
- Regularly update and patch all industrial control systems to prevent vulnerabilities.
- Implement network segmentation to isolate critical systems from potential threats.
Patching and Updates
- Stay informed about security advisories and updates from Schneider Electric.
- Follow best practices for securing industrial control systems to mitigate risks effectively.