SSA-516818: TCP Sequence Number Validation Vulnerability in the TCP/IP Stack of CP343-1 Devices
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. Siemens recommends countermeasures for products where fixes are not, or not yet available.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2023-51440US | high7.5 | — | ||
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… | ||||
references
External citations — patches, advisories, analysis.
- SSA-516818: TCP Sequence Number Validation Vulnerability in the TCP/IP Stack of CP343-1 Devices - CSAF Versionself
- SSA-516818: TCP Sequence Number Validation Vulnerability in the TCP/IP Stack of CP343-1 Devices - HTML Versionself
- SSA-516818: TCP Sequence Number Validation Vulnerability in the TCP/IP Stack of CP343-1 Devices - PDF Versionself
- SSA-516818: TCP Sequence Number Validation Vulnerability in the TCP/IP Stack of CP343-1 Devices - TXT Versionself
remediations (8)
- No fix plannedSIMATIC CP 343-1 (6GK7343-1EX30-0XE0)
Currently no fix is planned
- No fix plannedSIMATIC CP 343-1 Lean (6GK7343-1CX10-0XE0)
Currently no fix is planned
- No fix plannedSIPLUS NET CP 343-1 (6AG1343-1EX30-7XE0)
Currently no fix is planned
- No fix plannedSIPLUS NET CP 343-1 Lean (6AG1343-1CX10-2XE0)
Currently no fix is planned
- WorkaroundSIMATIC CP 343-1 (6GK7343-1EX30-0XE0)
Apply network segmentation and Defense-in-Depth practices to reduce likelihood of a threat actor to be able to reach a potentially vulnerable device
- WorkaroundSIMATIC CP 343-1 Lean (6GK7343-1CX10-0XE0)
Apply network segmentation and Defense-in-Depth practices to reduce likelihood of a threat actor to be able to reach a potentially vulnerable device
- WorkaroundSIPLUS NET CP 343-1 (6AG1343-1EX30-7XE0)
Apply network segmentation and Defense-in-Depth practices to reduce likelihood of a threat actor to be able to reach a potentially vulnerable device
- WorkaroundSIPLUS NET CP 343-1 Lean (6AG1343-1CX10-2XE0)
Apply network segmentation and Defense-in-Depth practices to reduce likelihood of a threat actor to be able to reach a potentially vulnerable device
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