CVE-2017-2680 : What You Need to Know

An intentional manipulation of PROFINET DCP broadcast packets has the potential to trigger a denial of service situation for affected products, limited to the local Ethernet segment at Layer 2. It is necessary for human intervention to restore the affected systems. It is worth noting that PROFIBUS interfaces remain unaffected by this issue.

Understanding CVE-2017-2680

This CVE involves a vulnerability in Siemens products related to PROFINET DCP broadcast packets, leading to a denial of service condition.

What is CVE-2017-2680?

This CVE describes a scenario where specially crafted PROFINET DCP broadcast packets can cause a denial of service on affected products within the local Ethernet segment.

The Impact of CVE-2017-2680

The vulnerability can disrupt the normal operation of affected systems, requiring manual intervention to recover. However, PROFIBUS interfaces are not impacted by this issue.

Technical Details of CVE-2017-2680

This section provides more in-depth technical information about the vulnerability.

Vulnerability Description

The vulnerability arises from the manipulation of PROFINET DCP broadcast packets, leading to a denial of service on affected Siemens products.

Affected Systems and Versions

Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller (All versions < V4.1.1 Patch04)
Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200 (All versions < V4.2.1 Patch03)
Various other Siemens products with specific version limitations

Exploitation Mechanism

The vulnerability is exploited by sending specially crafted PROFINET DCP broadcast packets to the affected systems, causing a denial of service condition.

Mitigation and Prevention

Understanding how to mitigate and prevent the impact of this vulnerability is crucial.

Immediate Steps to Take

Apply the recommended patches provided by Siemens for the affected products and versions.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activity that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly update and patch all Siemens products to ensure protection against known vulnerabilities.
Conduct security training for personnel to recognize and respond to potential cybersecurity threats effectively.

Patching and Updates

Siemens has released patches for the affected products and versions to address the vulnerability. Ensure timely application of these patches to secure the systems.