View CSAF

Summary

Incomplete Festo product documentation of remote accessible functions and their required IP ports. Depending on the product a description of the supported features can be found in the product documentation to some extent. Update A, 2022-12-13 Added affected device “Bus module CPX-E-PN, 4080497”

Festo reports firmware in the following products is affected:

• Bus module CPX-E-EP: All versions
• Bus module CPX-E-PN: All versions
• Bus node CPX-FB32: All versions
• Bus node CPX-FB33: All versions
• Bus node CPX-FB36: All versions
• Bus node CPX-FB37: All versions
• Bus node CPX-FB39: All versions
• Bus node CPX-FB40: All versions
• Bus node CPX-FB43: All versions
• Bus node CPX-M-FB34: All versions
• Bus node CPX-M-FB35: All versions
• Bus node CPX-M-FB44: All versions
• Bus node CPX-M-FB45: All versions
• Bus node CTEU-EP: All versions
• Bus node CTEU-PN: All versions
• Bus node CTEU-PN-EX1C: All versions
• Camera system CHB-C-N: All versions
• Compact Vision System SBO*-C-*: All versions
• Compact Vision System SBO*-M-*: All versions
• Compact Vision System SBO*-Q-*: All versions
• Control block CPX-CEC: All versions
• Control block CPX-CEC-C1: All versions
• Control block CPX-CEC-C1-V3(All versions): All versions
• Control block CPX-CEC-M1: All versions
• Control block CPX-CEC-M1-V3: All versions
• Control block CPX-CEC-S1-V3: All versions
• Control block CPX-CMXX: All versions
• Control block CPX-FEC-1-IE: All versions
• Controller CECC-D: All versions
• Controller CECC-D-BA: All versions
• Controller CECC-LK: All versions
• Controller CECC-S: All versions
• Controller CECC-X-*: All versions
• Controller CECX-X-C1: All versions
• Controller CECX-X-M1: All versions
• Controller CMXH-ST2-C5-7-DIOP: All versions
• Controller CPX-E-CEC-*: All versions
• Controller SBRD-Q: All versions
• EtherNet/IP interface CPX-AP-I-EP-M12: All versions
• EtherNet/IP interface CPX-AP-I-PN-M12: All versions
• Gateway CPX-IOT: All versions
• Integrated drive EMCA-EC-67-*: All versions
• Motor controller CMMO-ST-C5-1-DION: All versions
• Motor controller CMMO-ST-C5-1-DIOP: All versions
• Motor controller CMMO-ST-C5-1-LKP: All versions
• Motor controller CMMP-AS-*: All versions
• Motor controller CMMT-AS-*: All versions
• Operator unit CDPX-X-A-S-10: All versions
• Operator unit CDPX-X-A-W-13: All versions
• Operator unit CDPX-X-A-W-4: All versions
• Operator unit CDPX-X-A-W-7: All versions
• Planar surface gantry EXCM-*: All versions
• Servo drive CMMT-ST-C8-1C-EP-S0: All versions
• Servo drive CMMT-ST-C8-1C-PN-S0: All versions
• VTEM-S1-*: All versions

Background

• Critical Infrastructure Sectors: Critical Manufacturing
• Countries/Areas Deployed: Worldwide
• Company Headquarters Location: Germany

Vulnerabilities

Acknowledgments

• CERT@VDE for coordination and support with this publication
• Rob Hulsebos and Daniel dos Santos of Forescout reported this vulnerability to CERT VDE.

Impact

Please consult the CVE details above.

Mitigation

Update of technical user manual documentation in next product version.

Festo has update technical user manual documentation for the next product version to address this issue.

For more information see the associated Festo SE & Co. KG security advisory FSA-202209: Festo: Incomplete documentation of remote accessible functions and protocols in Festo products, FSA-202209: Festo: Incomplete documentation of remote accessible functions and protocols in Festo products – CSAF.

Recommendations

Users running communication over an untrusted network who require full protection should switch to an alternative solution such as running the communication over a VPN. Festo strongly recommends to minimize and protect network access to connected devices with state of the art techniques and processes. For a secure operation follow the recommendations in the product manuals and note the protocols and their supported features in Festo Field Device Tool or Festo Automation Suite online help. As part of a security strategy, Festo recommends the following general defense measures to reduce the risk of exploits: – Use controllers and devices only in a protected environment to minimize network exposure and ensure that they are not accessible from outside – Use firewalls to protect and separate the control system network from other networks – Use VPN (Virtual Private Networks) tunnels if remote access is required – Activate and apply user management and password features – Use encrypted communication links – Limit the access to both development and control system by physical means, operating system features, etc. – Protect both development and control system by using up to date virus detecting solutions

Disclaimer

Festo assumes no liability whatsoever for indirect, collateral, accidental or consequential losses that occur by the distribution and/or use of this document or any losses in connection with the distribution and/or use of this document. All information published in this document is provided free of charge and on good faith by Festo. Insofar as permissible by law, however, none of this information shall establish any warranty, guarantee, commitment, or liability on the part of Festo.nnNote: In no case does this information release the operator or responsible person from the obligation to check the effect on his system or installation before using the information and, in the event of negative consequences, not to use the information.nnIn addition, the actual general terms, and conditions for delivery, payment and software use of Festo, available under http://www.festo.com and the special provisions for the use of Festo Security Advisory available at https://www.festo.com/psirt shall apply.

Legal Notice and Terms of Use

This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).

Recommended Practices

CISA recommends users take defensive measures to minimize the exploitation risk of these vulnerabilities.

Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet.

Locate control system networks and remote devices behind firewalls and isolate them from business networks.

When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most recent version available. Also recognize VPN is only as secure as its connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

Advisory Conversion Disclaimer

This ICSA is a verbatim republication of Festo SE & Co. KG FSA-202209 from a direct conversion of the vendor’s Common Security Advisory Framework (CSAF) advisory. This is republished to CISA’s website as a means of increasing visibility and is provided “as-is” for informational purposes only. CISA is not responsible for the editorial or technical accuracy of republished advisories and provides no warranties of any kind regarding any information contained within this advisory. Further, CISA does not endorse any commercial product or service. Please contact Festo SE & Co. KG directly for any questions regarding this advisory.

Revision History

• Initial Release Date: 2022-11-29

Legal Notice and Terms of Use