8.7
CWE
400
Advisory Published
Updated

CVE-2024-43647

First published: Tue Sep 10 2024(Updated: )

A vulnerability has been identified in SIMATIC S7-200 SMART CPU CR40 (6ES7288-1CR40-0AA0) (All versions), SIMATIC S7-200 SMART CPU CR60 (6ES7288-1CR60-0AA0) (All versions), SIMATIC S7-200 SMART CPU SR20 (6ES7288-1SR20-0AA0) (All versions), SIMATIC S7-200 SMART CPU SR20 (6ES7288-1SR20-0AA1) (All versions), SIMATIC S7-200 SMART CPU SR30 (6ES7288-1SR30-0AA0) (All versions), SIMATIC S7-200 SMART CPU SR30 (6ES7288-1SR30-0AA1) (All versions), SIMATIC S7-200 SMART CPU SR40 (6ES7288-1SR40-0AA0) (All versions), SIMATIC S7-200 SMART CPU SR40 (6ES7288-1SR40-0AA1) (All versions), SIMATIC S7-200 SMART CPU SR60 (6ES7288-1SR60-0AA0) (All versions), SIMATIC S7-200 SMART CPU SR60 (6ES7288-1SR60-0AA1) (All versions), SIMATIC S7-200 SMART CPU ST20 (6ES7288-1ST20-0AA0) (All versions), SIMATIC S7-200 SMART CPU ST20 (6ES7288-1ST20-0AA1) (All versions), SIMATIC S7-200 SMART CPU ST30 (6ES7288-1ST30-0AA0) (All versions), SIMATIC S7-200 SMART CPU ST30 (6ES7288-1ST30-0AA1) (All versions), SIMATIC S7-200 SMART CPU ST40 (6ES7288-1ST40-0AA0) (All versions), SIMATIC S7-200 SMART CPU ST40 (6ES7288-1ST40-0AA1) (All versions), SIMATIC S7-200 SMART CPU ST60 (6ES7288-1ST60-0AA0) (All versions), SIMATIC S7-200 SMART CPU ST60 (6ES7288-1ST60-0AA1) (All versions). Affected devices do not properly handle TCP packets with an incorrect structure. This could allow an unauthenticated remote attacker to cause a denial of service condition. To restore normal operations, the network cable of the device needs to be unplugged and re-plugged.

Credit: productcert@siemens.com

Affected SoftwareAffected VersionHow to fix
Siemens SIMATIC S7-200 SMART CPU CR40 firmware<=All versions
Siemens SIMATIC S7-200 SMART CPU CR60 firmware<=All versions
Siemens SIMATIC S7-200 SMART<=All versions
Siemens SIMATIC S7-200 SMART CPU SR30 Firmware<=All versions
Siemens SIMATIC S7-200 SMART CPU SR40<=All versions
Siemens SIMATIC S7-200 SMART<=All versions
Siemens SIMATIC S7-200 SMART ST CPU<=All versions
Siemens SIMATIC S7-200 SMART<=All versions
Siemens SIMATIC S7-200 SMART CPU ST40 firmware<=All versions
Siemens SIMATIC S7-200 SMART<=All versions

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Frequently Asked Questions

  • What is the severity of CVE-2024-43647?

    CVE-2024-43647 is classified as a high severity vulnerability affecting multiple Siemens SIMATIC S7-200 SMART CPUs.

  • How do I fix CVE-2024-43647?

    To address CVE-2024-43647, users should apply the latest firmware updates provided by Siemens for the affected S7-200 SMART CPU models.

  • Which products are affected by CVE-2024-43647?

    CVE-2024-43647 affects all versions of the Siemens SIMATIC S7-200 SMART CPU CR40, CR60, SR20, and other variants.

  • What are the potential impacts of CVE-2024-43647?

    Exploitation of CVE-2024-43647 could lead to unauthorized access or control over the affected systems.

  • Is there a workaround for CVE-2024-43647?

    As of now, the recommended approach for CVE-2024-43647 is to upgrade to the patched version rather than relying on a workaround.

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