CVE-2023-51440

HIGH

SIMATIC CP 343-1 & SIPLUS NET CP 343-1 DoS via Spoofed TCP RST Packet

Title source: llm

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.

References (1)

Core 1

Core References

Vendor Advisory

https://cert-portal.siemens.com/productcert/html/ssa-516818.html

Scores

CVSS v3 7.5

EPSS 0.0037

EPSS Percentile 59.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-940

Status published

Products (4)

siemens/simatic_cp_343-1_firmware

siemens/simatic_cp_343-1_lean_firmware

siemens/siplus_net_cp_343-1_firmware

siemens/siplus_net_cp_343-1_lean_firmware

Published Feb 13, 2024

Tracked Since Feb 18, 2026