CVE-2017-6865 : What You Need to Know

A security loophole has been detected in various Siemens products, allowing for a Denial-of-Service attack when specially crafted PROFINET DCP broadcast packets are sent to the affected products within a local Ethernet segment.

Understanding CVE-2017-6865

What is CVE-2017-6865?

This CVE identifies a vulnerability in multiple Siemens products that can lead to a Denial-of-Service condition when specific network packets are sent to the affected devices.

The Impact of CVE-2017-6865

The vulnerability can cause certain services to become unresponsive, requiring manual intervention to restart and restore normal operations.

Technical Details of CVE-2017-6865

Vulnerability Description

Vulnerability affects various Siemens products including SIMATIC Automation Tool, SIMATIC PCS 7, SIMATIC STEP 7, SIMATIC WinAC RTX, SIMATIC WinCC, and more.
Denial-of-Service attack possible via specially crafted network packets.

Affected Systems and Versions

Primary Setup Tool (PST) < V4.2 HF1
SIMATIC Automation Tool < V3.0
SIMATIC NET PC-Software < V14 SP1
SIMATIC PCS 7 V8.1
SIMATIC PCS 7 V8.2 < V8.2 SP1
SIMATIC STEP 7 (TIA Portal) V13 < V13 SP2
And more as detailed in the provided data.

Exploitation Mechanism

Denial-of-Service occurs when malicious network packets are sent to vulnerable Siemens products within a local Ethernet segment.

Mitigation and Prevention

Immediate Steps to Take

Apply specific updates or service packs to mitigate the vulnerability.
Monitor network traffic for any suspicious activity targeting the affected products.

Long-Term Security Practices

Regularly update and patch Siemens products to address security vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Siemens may release patches or updates to address the vulnerability; ensure timely installation to enhance security.