CVE-2020-28212 : Vulnerability Insights and Analysis

A CWE-307 vulnerability exists in PLC Simulator on EcoStruxure Control Expert (now Unity Pro) that could lead to unauthorized command execution through a brute force attack over Modbus.

Understanding CVE-2020-28212

This CVE involves an Improper Restriction of Excessive Authentication Attempts vulnerability in the affected software.

What is CVE-2020-28212?

The CVE-2020-28212 vulnerability is related to unauthorized command execution due to improper authentication restrictions in PLC Simulator on EcoStruxure Control Expert (Unity Pro).

The Impact of CVE-2020-28212

The vulnerability could allow attackers to execute unauthorized commands by exploiting the weakness in authentication attempts, particularly through Modbus communication.

Technical Details of CVE-2020-28212

This section provides technical insights into the vulnerability.

Vulnerability Description

The vulnerability is categorized as CWE-307, indicating an Improper Restriction of Excessive Authentication Attempts issue.

Affected Systems and Versions

Product: PLC Simulator on EcoStruxure Control Expert (Unity Pro)
Versions: All versions are affected

Exploitation Mechanism

Attackers can exploit this vulnerability by conducting a brute force attack over Modbus, potentially leading to unauthorized command execution.

Mitigation and Prevention

Protecting systems from CVE-2020-28212 requires immediate actions and long-term security measures.

Immediate Steps to Take

Implement strong password policies to prevent brute force attacks
Monitor authentication attempts for unusual patterns
Restrict network access to critical systems

Long-Term Security Practices

Regularly update and patch the affected software
Conduct security training for personnel to recognize and respond to potential threats

Patching and Updates

Ensure timely installation of security patches and updates provided by the software vendor.