CVE-2019-6808 : Security Advisory and Response

A vulnerability known as CWE-284: Improper Access Control exists in all versions of Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium. This vulnerability could lead to remote code execution by altering the controller's configuration settings via Modbus.

Understanding CVE-2019-6808

This CVE identifies a critical security issue in Schneider Electric's Modicon series, potentially allowing unauthorized remote access and control.

What is CVE-2019-6808?

The vulnerability in Modicon M580, M340, Quantum, and Premium allows attackers to execute remote code by manipulating the controller's configuration settings through Modbus.

The Impact of CVE-2019-6808

The vulnerability poses a severe risk of unauthorized access and control over affected systems, potentially leading to significant disruptions and compromise of industrial operations.

Technical Details of CVE-2019-6808

This section provides in-depth technical insights into the vulnerability.

Vulnerability Description

The CWE-284 vulnerability in Modicon devices enables remote code execution by modifying the controller's configuration settings via Modbus communication.

Affected Systems and Versions

Products affected: Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium
Vulnerable versions: All versions of the mentioned products

Exploitation Mechanism

The vulnerability can be exploited by unauthorized entities to gain remote access and execute malicious code by tampering with the controller's configuration settings through Modbus communication.

Mitigation and Prevention

Protecting systems from CVE-2019-6808 requires immediate actions and long-term security measures.

Immediate Steps to Take

Apply security patches provided by Schneider Electric promptly
Implement network segmentation to restrict access to critical systems
Monitor network traffic for any suspicious activities

Long-Term Security Practices

Conduct regular security assessments and audits of industrial control systems
Train employees on cybersecurity best practices and awareness
Keep systems updated with the latest security patches and firmware releases

Patching and Updates

Regularly check for security advisories from Schneider Electric and apply recommended patches and updates to mitigate the vulnerability effectively.