CVE-2023-51440

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.34%
Vendor Advisory siemens.com
Affected: Siemens SIMATIC CP 343-1
Affected: Siemens SIMATIC CP 343-1 Lean
Affected: Siemens SIPLUS NET CP 343-1
Affected: Siemens SIPLUS NET CP 343-1 Lean
Published at:
Updated at:

References

Link Tags
https://cert-portal.siemens.com/productcert/html/ssa-516818.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-51440?
CVE-2023-51440 has been scored as a high severity vulnerability.
How to fix CVE-2023-51440?
To fix CVE-2023-51440, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-51440 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-51440 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-51440?
CVE-2023-51440 affects Siemens SIMATIC CP 343-1, Siemens SIMATIC CP 343-1 Lean, Siemens SIPLUS NET CP 343-1, Siemens SIPLUS NET CP 343-1 Lean.
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