high7.5
CVE-2021-33737
A vulnerability has been identified in SIMATIC CP 343-1 (incl.
Impact
A vulnerability has been identified in SIMATIC CP 343-1 (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 ERPC (All versions), SIMATIC CP 343-1 Lean (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 Advanced (All versions < V3.3), SIPLUS NET CP 443-1 (All versions < V3.3), SIPLUS NET CP 443-1 Advanced (All versions < V3.3). Sending a specially crafted packet to port 102/tcp of an affected device could cause a denial of service condition. A restart is needed to restore normal operations.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Siemens | Simatic Cp 343-1 Firmware | All versions |
| Siemens | Simatic Cp 343-1 Advanced Firmware | All versions |
| Siemens | Simatic Cp 343-1 Erpc Firmware | All versions |
| Siemens | Simatic Cp 343-1 Lean Firmware | All versions |
| Siemens | Simatic Cp 443-1 Firmware | All versions |
| Siemens | Simatic Cp 443-1 Advanced Firmware | All versions |