| Package | Affected versions | Patched versions |
|---|---|---|
| local discovery server | ≤ 1.01.333.0 | |
| ua .net | ≤ 2017-03-21 | |
| simatic pcs7 | ≤ 8.1 | |
| wincc | ≤ 7.4 |
An XXE vulnerability has been identified in OPC Foundation UA .NET Sample Code before 2017-03-21 and Local Discovery Server (LDS) before 1.03.367. Among the affected products are Siemens SIMATIC PCS7 (All versions V8.1 and earlier), SIMATIC WinCC (All versions < V7.4 SP1), SIMATIC WinCC Runtime Professional (All versions < V14 SP1), SIMATIC NET PC Software, and SIMATIC IT Production Suite. By sending specially crafted packets to the OPC Discovery Server at port 4840/tcp, an attacker might cause the system to access various resources chosen by the attacker.
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