CVE-2018-7760 : What You Need to Know

Schneider Electric's Modicon M340, Modicon Premium, Modicon Quantum, and BMXNOR0201 are affected by an authorization bypass vulnerability that allows unauthorized users to bypass authentication using CGI functions.

Understanding CVE-2018-7760

This CVE identifies a security flaw in Schneider Electric's PLCs that enables unauthorized access.

What is CVE-2018-7760?

An authorization bypass vulnerability in Schneider Electric's Modicon M340, Modicon Premium, Modicon Quantum PLC, and BMXNOR0200 allows malicious users to circumvent authentication through CGI functions.

The Impact of CVE-2018-7760

Unauthorized users can exploit this vulnerability to gain unauthorized access to affected systems, potentially leading to unauthorized control or manipulation of critical processes.

Technical Details of CVE-2018-7760

This section provides technical details of the vulnerability.

Vulnerability Description

The flaw in Schneider Electric's PLCs permits unauthorized users to bypass authentication by utilizing CGI functions.

Affected Systems and Versions

Products: Modicon M340, Modicon Premium, Modicon Quantum, BMXNOR0201
Vendor: Schneider Electric SE
Versions: All Modicon M340, Premium, Quantum PLCs, and BMXNOR0201

Exploitation Mechanism

Malicious users can exploit CGI functions to bypass the authentication process and gain unauthorized access to the affected systems.

Mitigation and Prevention

Protecting systems from CVE-2018-7760 is crucial to prevent unauthorized access and potential security breaches.

Immediate Steps to Take

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

Long-Term Security Practices

Regularly update and patch all PLCs and related software.
Conduct security assessments and penetration testing to identify vulnerabilities.
Educate users on secure authentication practices and the risks of unauthorized access.

Patching and Updates

Schneider Electric may release patches and updates to address the vulnerability. Stay informed about security advisories and apply patches as soon as they are available.