CVE-2021-37205
A vulnerability has been identified in SIMATIC Drive Controller family (All versions >= V2.9.2 < V2.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl.
Impact
A vulnerability has been identified in SIMATIC Drive Controller family (All versions >= V2.9.2 < V2.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions >= V21.9 < V21.9.4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions >= V4.5.0 < V4.5.2), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions >= V2.9.2 < V2.9.4), SIMATIC S7-1500 Software Controller (All versions >= V21.9 < V21.9.4), SIMATIC S7-PLCSIM Advanced (All versions >= V4.0 < V4.0 SP1), SIPLUS TIM 1531 IRC (All versions < V2.3.6), TIM 1531 IRC (All versions < V2.3.6). An unauthenticated attacker could cause a denial-of-service condition in a PLC when sending specially prepared packets over port 102/tcp. A restart of the affected device is needed to restore normal operations.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Siemens | Simatic Drive Controller Cpu 1504d Tf Firmware | before 2.9.4 |
| Siemens | Simatic Drive Controller Cpu 1507d Tf Firmware | before 2.9.4 |
| Siemens | Simatic Et 200sp Open Controller Cpu 1515sp Pc2 Firmware | All versions |
| Siemens | Simatic S7-Plcsim Advanced Firmware | before 4.0 Version 4.0 |
| Siemens | Tim 1531 Irc Firmware | from 2.2 |
| Siemens | Simatic S7-1500 Software Controller | All versions |
| Siemens | Simatic S7-1200 Cpu 1211c Firmware | from 4.5.0 before 4.5.2 |
| Siemens | Simatic S7-1200 Cpu 1212c Firmware | from 4.5.0 before 4.5.2 |
| Siemens | Simatic S7-1200 Cpu 1212fc Firmware | from 4.5.0 before 4.5.2 |
| Siemens | Simatic S7-1200 Cpu 1214fc Firmware | from 4.5.0 before 4.5.2 |
| Siemens | Simatic S7-1200 Cpu 1214c Firmware | from 4.5.0 before 4.5.2 |
| Siemens | Simatic S7-1200 Cpu 1215fc Firmware | from 4.5.0 before 4.5.2 |