CVE-2017-6868 : Security Advisory and Response

Siemens SIMATIC CP 44x-1 RNA, versions prior to 1.4.1, has an improper authentication vulnerability that could allow unauthenticated remote attackers to perform administrative actions on the CP module.

Understanding CVE-2017-6868

This CVE involves an authentication issue in Siemens SIMATIC CP 44x-1 RNA, potentially enabling unauthorized administrative access.

What is CVE-2017-6868?

Siemens SIMATIC CP 44x-1 RNA, versions before 1.4.1, is susceptible to improper authentication. Attackers with network access to Port 102/TCP and the CP configuration file on the RNA's CPU could exploit this vulnerability.

The Impact of CVE-2017-6868

The vulnerability allows unauthenticated remote attackers to carry out administrative actions on the CP module of the RNA series, compromising system integrity and security.

Technical Details of CVE-2017-6868

Siemens SIMATIC CP 44x-1 RNA vulnerability details.

Vulnerability Description

The issue lies in the improper authentication mechanism of Siemens SIMATIC CP 44x-1 RNA, versions prior to 1.4.1, enabling unauthorized access to the CP module.

Affected Systems and Versions

Product: Siemens SIMATIC CP 44x-1 Redundant Network Access Modules
Versions: All versions before 1.4.1

Exploitation Mechanism

Attackers need network access to Port 102/TCP and the CP configuration file on the RNA's CPU to exploit the vulnerability.

Mitigation and Prevention

Protecting systems from CVE-2017-6868.

Immediate Steps to Take

Update Siemens SIMATIC CP 44x-1 RNA to version 1.4.1 or later to mitigate the vulnerability.
Restrict network access to Port 102/TCP to authorized users only.

Long-Term Security Practices

Implement strong authentication mechanisms for critical systems.
Regularly monitor and audit network access and configurations for anomalies.

Patching and Updates

Apply patches and updates provided by Siemens to address the authentication vulnerability in SIMATIC CP 44x-1 RNA.