CVE-2019-6848 : Security Advisory and Response
Learn about CVE-2019-6848, a vulnerability in Modicon M580 CPU and communication modules that could lead to a Denial of Service attack on the PLC. Find mitigation steps and prevention measures here.
A vulnerability exists in the Modicon M580 CPU and communication module that could lead to a Denial of Service attack on the PLC.
Understanding CVE-2019-6848
This CVE involves improper handling of exceptional conditions in the Modicon M580 CPU and communication modules.
What is CVE-2019-6848?
The vulnerability, identified as CWE-755, allows for a Denial of Service attack on the PLC when specific data is sent through the REST API of the controller/communication module.
The Impact of CVE-2019-6848
The vulnerability poses a risk of disrupting the operation of the PLC, potentially causing downtime and affecting industrial processes.
Technical Details of CVE-2019-6848
This section provides detailed technical information about the CVE.
Vulnerability Description
The vulnerability is related to the improper handling of exceptional conditions in the Modicon M580 CPU and communication modules.
Affected Systems and Versions
- Product: Modicon M580 CPU (BMEx58*) and Modicon M580 communication module (BMENOC0311, BMENOC0321)
- Versions: Modicon M580 CPU (BMEx58*) and Modicon M580 communication module (BMENOC0311, BMENOC0321)
Exploitation Mechanism
The vulnerability can be exploited by sending specific data through the REST API of the controller/communication module, triggering a Denial of Service attack.
Mitigation and Prevention
Protecting systems from CVE-2019-6848 is crucial for maintaining operational integrity and security.
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 activity.
Long-Term Security Practices
- Conduct regular security assessments and audits of industrial control systems.
- Train personnel on cybersecurity best practices and awareness.
- Keep systems up to date with the latest security measures.
- Consider implementing intrusion detection systems to detect and respond to threats.
Patching and Updates
Regularly check for updates and patches released by the vendor to address the vulnerability and enhance system security.