Description
TwinCAT OPC UA Server in versions up to 2.3.0.12 and IPC Diagnostics UA Server in versions up to 3.1.0.1 from Beckhoff Automation GmbH & Co. KG are vulnerable to denial of service attacks. The attacker needs to send several specifically crafted requests to the running OPC UA server. After some of these requests the OPC UA server is no longer responsive to any client. This is without effect to the real-time functionality of IPCs.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Beckhoff TwinCAT OPC UA Server
unspecified to ≤ 2.3.0.12affected
Beckhoff IPC Diagnostics UA Server
unspecified to ≤ 3.1.0.1affected
Beckhoff TF6100
unspecified to ≤ 3.3.18affected