Description
A vulnerability has been identified in SIMATIC CP 343-1 (6GK7343-1EX30-0XE0) (All versions), SIMATIC CP 343-1 Lean (6GK7343-1CX10-0XE0) (All versions), SIPLUS NET CP 343-1 (6AG1343-1EX30-7XE0) (All versions), SIPLUS NET CP 343-1 Lean (6AG1343-1CX10-2XE0) (All versions). Affected products incorrectly validate TCP sequence numbers. This could allow an unauthenticated remote attacker to create a denial of service condition by injecting spoofed TCP RST packets.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Siemens | SIMATIC CP 343-1 | All versions | — |
| Siemens | SIMATIC CP 343-1 Lean | All versions | — |
| Siemens | SIPLUS NET CP 343-1 | All versions | — |
| Siemens | SIPLUS NET CP 343-1 Lean | All versions | — |
Advisories 2
- ICSA-24-046-04 Siemens CP343-1 Devices CISA ICS & IT advisories · Feb 13, 2024
- SSA-516818 SSA-516818: TCP Sequence Number Validation Vulnerability in the TCP/IP Stack of CP343-1 Devices Siemens ProductCERT · Feb 13, 2024