Description
A vulnerability has been identified in SIMATIC PCS neo V4.0 (All versions), SIMATIC STEP 7 V16 (All versions), SIMATIC STEP 7 V17 (All versions), SIMATIC STEP 7 V18 (All versions < V18 Update 2). Affected applications do not properly restrict the .NET BinaryFormatter when deserializing user-controllable input. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application.
This is the same issue that exists for .NET BinaryFormatter https://docs.microsoft.com/en-us/visualstudio/code-quality/ca2300.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Siemens | SIMATIC PCS neo V4.0 | — | — |
| Siemens | SIMATIC STEP 7 V16 | — | — |
| Siemens | SIMATIC STEP 7 V17 | — | — |
| Siemens | SIMATIC STEP 7 V18 | < V18 Update 2 | V18 Update 2 |
Advisories 3
- WID-SEC-2024-1572 Siemens TIA Portal: Mehrere Schwachstellen ermöglichen Codeausführung BSI CERT-Bund (WID) · Jul 9, 2024
- ICSA-24-193-17 Siemens SIMATIC STEP 7 (TIA Portal) CISA ICS & IT advisories · Jul 9, 2024
- SSA-825651 SSA-825651: Deserialization Vulnerability in SIMATIC STEP 7 (TIA Portal) before V18 Update 2 Siemens ProductCERT · Jul 9, 2024