CVE-2021-44222 : Vulnerability Insights and Analysis

A vulnerability has been identified in SIMATIC eaSie Core Package (All versions < V22.00). The underlying MQTT service of affected systems does not perform authentication, potentially allowing an unauthenticated remote attacker to send arbitrary messages.

Understanding CVE-2021-44222

This CVE refers to a case concerning the SIMATIC eaSie Core Package by Siemens, where the lack of authentication in the MQTT service could lead to security issues.

What is CVE-2021-44222?

The vulnerability in SIMATIC eaSie Core Package allows unauthenticated remote attackers to send arbitrary messages to the system, enabling them to issue arbitrary requests.

The Impact of CVE-2021-44222

The vulnerability poses a significant security risk as attackers could manipulate the affected system through unauthorized messages, potentially leading to unauthorized access or system compromise.

Technical Details of CVE-2021-44222

The following technical aspects of the vulnerability are essential:

Vulnerability Description

The underlying MQTT service in affected systems lacks authentication, allowing unauthenticated remote attackers to send arbitrary messages.

Affected Systems and Versions

Product: SIMATIC eaSie Core Package
Vendor: Siemens
Versions Affected: All versions < V22.00

Exploitation Mechanism

Unauthenticated remote attackers exploit the absence of authentication in the MQTT service to send arbitrary messages and issue requests in the system.

Mitigation and Prevention

To address CVE-2021-44222, consider the following measures:

Immediate Steps to Take

Disable the MQTT service if not required
Implement network segmentation to restrict access to the affected system

Long-Term Security Practices

Regularly update and patch the affected systems
Conduct security training for staff to enhance awareness

Patching and Updates

Apply updates provided by Siemens to fix the authentication vulnerability