CVE-2018-7809 : Exploit Details and Defense Strategies

A security flaw in the embedded web servers of Modicon M340, Premium, Quantum PLCs, and BMXNOR0200 devices could allow unauthorized remote users to access and delete passwords.

Understanding CVE-2018-7809

This CVE involves an Unverified Password Change vulnerability in the embedded web servers of specific Schneider Electric devices.

What is CVE-2018-7809?

CVE-2018-7809 is a security vulnerability found in the built-in web servers of Modicon M340, Premium, Quantum PLCs, and BMXNOR0200 devices. Exploiting this flaw may enable remote unauthorized users to access and delete passwords through the web server.

The Impact of CVE-2018-7809

The vulnerability could lead to unauthorized access and deletion of passwords, posing a significant security risk to affected systems and potentially compromising sensitive information.

Technical Details of CVE-2018-7809

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability allows unauthenticated remote users to access the password delete function of the web server, potentially leading to unauthorized password changes.

Affected Systems and Versions

Product: Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs, and BMXNOR0200
Vendor: Schneider Electric SE
Affected Version: Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs, and BMXNOR0200

Exploitation Mechanism

Unauthorized remote users can exploit the vulnerability to access and delete passwords through the web server, compromising system security.

Mitigation and Prevention

Protecting systems from CVE-2018-7809 requires immediate action and long-term security practices.

Immediate Steps to Take

Apply security patches provided by Schneider Electric SE 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.
Educate users on best practices for password security and access control.

Patching and Updates

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