CVE-2020-7498 : Security Advisory and Response

A CWE-798 vulnerability exists in the Unity Loader and OS Loader Software, potentially leading to unauthorized access to file transfer services.

Understanding CVE-2020-7498

What is CVE-2020-7498?

This CVE identifies a CWE-798: Use of Hard-coded Credentials vulnerability in the Unity Loader and OS Loader Software.

The Impact of CVE-2020-7498

The vulnerability could allow unauthorized access to file transfer services on Modicon PLCs, leading to various unintended consequences.

Technical Details of CVE-2020-7498

Vulnerability Description

The issue stems from the use of fixed credentials in the software to simplify file transfer, which is now considered a security vulnerability.

Affected Systems and Versions

Product: Unity Loader and OS Loader Software (All versions)

Exploitation Mechanism

The vulnerability could be exploited by malicious actors to gain unauthorized access to the file transfer service.

Mitigation and Prevention

Immediate Steps to Take

Avoid using default or hard-coded credentials in production environments.
Implement strong, unique passwords for all accounts.
Regularly monitor and audit access to file transfer services.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Stay informed about security updates and patches for the affected software.

Patching and Updates

Apply patches and updates provided by the software vendor to address the vulnerability.