|Article No°||Product Name||Affected Version(s)|
|ILC 131||all versions|
|ILC 151||all versions|
|ILC 171||all versions|
|ILC 191 ETH||all versions|
The processing program of the IEC 61131 program can be slowed down or stopped completely by creating a large amount of network traffic that needs to be handled by the ILC.
The processing of the network load takes up so much CPU power that the operation of all functions of the device, including the 61131 program, will slow down. This may affect the automation task. Once the network load is removed the ILC will return to normal state.
Customers using Phoenix Contact ILC 1x1 are recommended to operate the devices in closed networks or protected with a suitable firewall.
For detailed information on our recommendations for measures to protect network-cabable devices, please refer to our application note:
This vulnerability was reported by Matthias Niedermaier (Hochschule Augsburg), Jan-Ole Malchow (Freie Universität Berlin) and Florian Fischer (Hochschule Augsburg)