CVE-2019-6850 : What You Need to Know

A CWE-200 vulnerability exists in Modicon M580, Modicon BMENOC 0311, and Modicon BMENOC 0321, potentially exposing sensitive information through the REST API.

Understanding CVE-2019-6850

What is CVE-2019-6850?

This CVE identifies a CWE-200 vulnerability in Schneider Electric's Modicon M580, Modicon BMENOC 0311, and Modicon BMENOC 0321, allowing exposure of sensitive data via specific register access.

The Impact of CVE-2019-6850

The vulnerability could lead to the disclosure of critical information when interacting with the controller/communication module's REST API.

Technical Details of CVE-2019-6850

Vulnerability Description

The vulnerability, categorized as CWE-200: Information Exposure, enables unauthorized access to sensitive data through the affected products' REST API.

Affected Systems and Versions

Products: Modicon M580, Modicon BMENOC 0311, Modicon BMENOC 0321
Versions: Modicon M580, Modicon BMENOC 0311, Modicon BMENOC 0321

Exploitation Mechanism

The vulnerability is exploited by accessing specific registers through the REST API, potentially leading to the exposure of sensitive information.

Mitigation and Prevention

Immediate Steps to Take

Implement network segmentation to restrict access to vulnerable systems
Monitor and log traffic to detect any unauthorized access attempts
Apply vendor-supplied patches or updates promptly

Long-Term Security Practices

Regularly update and patch all systems and software
Conduct security assessments and penetration testing to identify vulnerabilities

Patching and Updates

Schneider Electric may release patches or updates to address the vulnerability