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Vulnerability · Published Feb 13, 2024 · Assigned by siemens

CVE-2023-51440

High 7.5

In plain English

A high-severity security flaw in SIMATIC CP 343-1 from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 51.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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 (as reported)

VendorProductVersions
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

Weakness: CWE-940 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:T/RC:C

References