CVE-2020-7475 : What You Need to Know

A CWE-74 vulnerability exists in EcoStruxure Control Expert, Unity Pro, Modicon M340, and Modicon M580, allowing attackers to transfer malicious code to the controller.

Understanding CVE-2020-7475

A vulnerability related to improper neutralization of special elements in output used by a downstream component ('Injection') poses a security risk in multiple Schneider Electric products.

What is CVE-2020-7475?

This CVE identifies a reflective DLL vulnerability in EcoStruxure Control Expert, Unity Pro, Modicon M340, and Modicon M580, potentially enabling attackers to inject and execute malicious code on the controller.

The Impact of CVE-2020-7475

Exploitation of this vulnerability could lead to unauthorized access, data manipulation, and disruption of industrial control processes, posing a significant risk to operational technology environments.

Technical Details of CVE-2020-7475

This section provides detailed technical insights into the CVE-2020-7475 vulnerability.

Vulnerability Description

The vulnerability stems from the improper handling of special elements in the output, allowing attackers to inject and execute arbitrary code on affected Schneider Electric products.

Affected Systems and Versions

EcoStruxure Control Expert: all versions prior to 14.1 Hot Fix
Unity Pro: all versions
Modicon M340: all versions prior to V3.20
Modicon M580: all versions prior to V3.10

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting specially crafted code into the affected systems, potentially compromising the integrity and security of industrial control processes.

Mitigation and Prevention

Protecting systems from CVE-2020-7475 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by Schneider Electric to mitigate the vulnerability effectively.
Implement network segmentation to isolate critical control systems from external threats.
Monitor network traffic for any suspicious activities that could indicate exploitation attempts.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities proactively.
Educate personnel on cybersecurity best practices to enhance overall security posture.

Patching and Updates

Ensure timely installation of security patches and updates released by Schneider Electric to address the CVE-2020-7475 vulnerability.