Vulnerability Description
A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC Drive Controller family (All versions >= V2.9.2 < V2.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V21.9), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions >= V21.9 < V21.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 Ready4Linux (All versions), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.5.0), 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), 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), SIMATIC S7-1500 Software Controller (All versions >= V21.9 < V21.9.4), SIMATIC S7-PLCSIM Advanced (All versions < V4.0), 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 packet over port 102/tcp. A restart of the affected device is needed to restore normal operations.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Siemens | Simatic Drive Controller Cpu 1504D Tf Firmware | < 2.9.4 |
| Siemens | Simatic Drive Controller Cpu 1504D Tf | - |
| Siemens | Simatic Drive Controller Cpu 1507D Tf Firmware | < 2.9.4 |
| Siemens | Simatic Drive Controller Cpu 1507D Tf | - |
| Siemens | Simatic Et 200Sp Open Controller Cpu 1515Sp Pc2 Firmware | All versions |
| Siemens | Simatic Et 200Sp Open Controller Cpu 1515Sp Pc2 | - |
| Siemens | Simatic S7-Plcsim Advanced Firmware | < 4.0 |
| Siemens | Simatic S7-Plcsim Advanced | - |
| Siemens | Tim 1531 Irc Firmware | >= 2.2 |
| Siemens | Tim 1531 Irc | - |
| Siemens | Simatic S7-1500 Software Controller | All versions |
| Siemens | Simatic S7-1200 Cpu 1211C Firmware | >= 4.5.0, < 4.5.2 |
| Siemens | Simatic S7-1200 Cpu 1211C | - |
| Siemens | Simatic S7-1200 Cpu 1212C Firmware | >= 4.5.0, < 4.5.2 |
| Siemens | Simatic S7-1200 Cpu 1212C | - |
| Siemens | Simatic S7-1200 Cpu 1212Fc Firmware | >= 4.5.0, < 4.5.2 |
| Siemens | Simatic S7-1200 Cpu 1212Fc | - |
| Siemens | Simatic S7-1200 Cpu 1214Fc Firmware | >= 4.5.0, < 4.5.2 |
| Siemens | Simatic S7-1200 Cpu 1214Fc | - |
| Siemens | Simatic S7-1200 Cpu 1214C Firmware | >= 4.5.0, < 4.5.2 |
Related Weaknesses (CWE)
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-838121.pdfPatchVendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-838121.pdfPatchVendor Advisory
FAQ
What is CVE-2021-37204?
CVE-2021-37204 is a vulnerability with a CVSS score of 7.5 (HIGH). A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC Drive Controller family (All versions >= V2.9.2 < V2.9.4), SIMATIC ET 200SP Open Controller CPU ...
How severe is CVE-2021-37204?
CVE-2021-37204 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-37204?
Check the references section above for vendor advisories and patch information. Affected products include: Siemens Simatic Drive Controller Cpu 1504D Tf Firmware, Siemens Simatic Drive Controller Cpu 1504D Tf, Siemens Simatic Drive Controller Cpu 1507D Tf Firmware, Siemens Simatic Drive Controller Cpu 1507D Tf, Siemens Simatic Et 200Sp Open Controller Cpu 1515Sp Pc2 Firmware.