CVE-2020-7541 Explained : Impact and Mitigation

A CWE-425 vulnerability exists in the Web Server on Modicon M340, Modicon Quantum, and Modicon Premium, potentially leading to data disclosure.

Understanding CVE-2020-7541

This CVE involves a Direct Request ('Forced Browsing') vulnerability in specific Schneider Electric products.

What is CVE-2020-7541?

The vulnerability in the Web Server on Modicon M340, Modicon Quantum, and Modicon Premium could allow an attacker to access sensitive data by sending a crafted request over HTTP.

The Impact of CVE-2020-7541

The vulnerability could result in the disclosure of sensitive information stored on the affected devices, posing a risk to data confidentiality.

Technical Details of CVE-2020-7541

This section provides more technical insights into the CVE.

Vulnerability Description

A CWE-425 vulnerability allows for 'Forced Browsing,' enabling unauthorized access to sensitive data through specially crafted HTTP requests.

Affected Systems and Versions

Web Server on Modicon M340
Legacy Offers Modicon Quantum and Modicon Premium
Associated Communication Modules (refer to security notification for affected versions)

Exploitation Mechanism

The vulnerability can be exploited by sending a specifically crafted request to the controller over HTTP, potentially leading to data exposure.

Mitigation and Prevention

Protecting systems from CVE-2020-7541 is crucial to maintaining security.

Immediate Steps to Take

Apply security patches provided by Schneider Electric promptly.
Implement network segmentation to restrict access to vulnerable devices.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch all software and firmware on the affected devices.
Conduct security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Stay informed about security advisories from Schneider Electric.
Follow best practices for secure configuration and maintenance of the affected products.