Description
A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.5.0), SCALANCE X-200RNA switch family (All versions < V3.2.7). Devices create a new unique key upon factory reset, except when used with C-PLUG. When used with C-PLUG the devices use the hardcoded private RSA-key shipped with the firmware-image. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Siemens | SCALANCE X-200 switch family (incl. SIPLUS NET variants) | All versions < V5.2.5 | — |
| Siemens | SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) | All versions < V5.5.0 | — |
| Siemens | SCALANCE X-200RNA switch family | All versions < V3.2.7 | — |
Advisories 2
- ICSA-21-012-02 Siemens SCALANCE X Switches (Update B) CISA ICS & IT advisories · Dec 13, 2022
- SSA-274900 SSA-274900: Use of Hardcoded Key in SCALANCE X Devices Under Certain Conditions Siemens ProductCERT · Dec 13, 2022