Pepperl+Fuchs: Multiple Products - Vulnerability may allow remote attackers to cause a Denial Of Service

Critical vulnerability has been discovered in the utilized component PROFINET IO Device by Hilscher Gesellschaft für Systemautomation mbH.

The impact of the vulnerability on the affected device is that it can
- no longer perform acyclic requests
- may drop all established cyclic connections may
- disappear completely from the network.

For more information see advisory by Hilscher:

kb.hilscher.com/display/ISMS/2020-12-...

Update 20.11.2024: Products have been added

Pepperl+Fuchs analyzed and identified affected devices.
Remote attackers may cause a cause a Denial Of Service of the product.

An external protective measure is required.

• Minimize network exposure for affected products and ensure that they are not accessible via the Internet.
• Isolate affected products from the corporate network.
• If remote access is required, use secure methods such as virtual private networks (VPNs).

Pepperl+Fuchs SE thanks the following parties for their efforts:

• CERT@VDE for coordination (see https://certvde.com )
• Hilscher Gesellschaft für Systemautomation mbH for reporting.