Schneider Electric Modicon M340, MC80, and Momentum Unity M1E & EcoStruxure (Update A)
Schneider Electric is aware of multiple vulnerabilities in its Modicon Controllers M340 / Momentum / MC80 / EcoStruxure™ Control Expert products. [Modicon PAC](https://www.se.com/ww/en/product-subcategory/3950-pac-programmable-automation-controllers/?filter=business-1-industrial-automation-and-control) products control and monitor industrial operations. [EcoStruxure™ Control Expert](https://www.se.com/ww/en/product-range/548-ecostruxure-control-expert-unity-pro/#overview) is the engineering application for Modicon Controllers. Failure to apply the provided remediations/mitigations below may risk unauthorized access to the controller, which could result in the possibility of denial of service and loss of confidentiality, integrity of the controller.
describes (2)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2024-8935US | — | — | ||
CWE-290: Authentication Bypass by Spoofing vulnerability exists that could cause a denial of service and loss
of confidentiality and integrity of controllers when conducting a Man-… | ||||
| CVE-2024-8933US | — | — | ||
CWE-924: Improper Enforcement of Message Integrity During Transmission in a Communication Channel
vulnerability exists that could cause retrieval of password hash that could lead t… | ||||
references
External citations — patches, advisories, analysis.
- Modicon Controllers M340 / Momentum / MC80 - SEVD-2024-317-02 PDF Versionself
- Modicon Controllers M340 / Momentum / MC80 - SEVD-2024-317-02 CSAF Versionself
- ICS Advisory ICSA-24-326-03 JSONself
- ICS Advisory ICSA-24-326-03 - Web Versionself
- Recommended Practicesexternal
- Recommended Practicesexternal
- Recommended Practicesexternal
- Recommended Practicesexternal
remediations (11)
- MitigationEcoStruxure™ Control Expert
Customers should immediately apply the following mitigations to reduce the risk of exploit: • Setup network segmentation and implement a firewall to block all unauthorized access to port 502/TCP • Configure the Access Control List following the recommendations of the user manuals: “Momentum for EcoStruxure™ Control Expert - 171CBU78090, 171CBU98090, 171CBU98091 Processors, User Guide” in the section “Controlling Access”: https://www.se.com/ww/en/download/document/HRB44124/ • Consider use of external firewall devices such as EAGLE40-07 from Belden to establish VPN connections. For more details refer to “Modicon Controller Systems Cybersecurity, User Guide”: https://www.se.com/ww/en/download/document/EIO0000001999/
https://www.se.com/ww/en/download/document/HRB44124/ - MitigationEcoStruxure™ Control Expert
Customers should immediately apply the following mitigations to reduce the risk of exploit: • Setup network segmentation and implement a firewall to block all unauthorized access to port 502/TCP • Configure the Access Control List following the recommendations of the user manuals: “Momentum for EcoStruxure™ Control Expert - 171CBU78090, 171CBU98090, 171CBU98091 Processors, User Guide” in the section “Controlling Access”: https://www.se.com/ww/en/download/document/HRB44124/ • Consider use of external firewall devices such as EAGLE40-07 from Belden to establish VPN connections. For more details refer to “Modicon Controller Systems Cybersecurity, User Guide”: https://www.se.com/ww/en/download/document/EIO0000001999/
https://www.se.com/ww/en/download/document/HRB44124/ - MitigationModicon M340 CPU Firmware Versions prior to SV3.70 installed on Modicon M340 CPU Controller (part numbers BMXP34*)
Customers should immediately apply the following mitigations to reduce the risk of exploit: • Setup network segmentation and implement a firewall to block all unauthorized access to port 502/TCP • Configure the Access Control List following the recommendations of the user manuals: “Modicon M340 for Ethernet Communications Modules and Processors User Manual” in chapter “Messaging Configuration Parameters”: https://www.se.com/ww/en/download/document/31007131K01000/ • Consider use of external firewall devices such as EAGLE40-07 from Belden to establish VPN connections. For more details refer to “Modicon Controller Systems Cybersecurity, User Guide”: https://www.se.com/ww/en/download/document/EIO0000001999/ • Ensure the M340 CPU is running with the memory protection activated by configuring the input bit to a physical input, for more details refer to the following guideline “Modicon Controller Systems Cybersecurity, User Guide” chapter “Controler Memory Protection”: https://www.se.com/ww/en/download/document/EIO0000001999/
https://www.se.com/ww/en/download/document/31007131K01000/ - MitigationModicon M340 CPU Firmware Versions since SV3.60 and prior to SV3.70 installed on Modicon M340 CPU Controller (part numbers BMXP34*)
Customers should immediately apply the following mitigations to reduce the risk of exploit: • Setup network segmentation and implement a firewall to block all unauthorized access to port 502/TCP • Configure the Access Control List following the recommendations of the user manuals: “Modicon M340 for Ethernet Communications Modules and Processors User Manual” in chapter “Messaging Configuration Parameters”: https://www.se.com/ww/en/download/document/31007131K01000/ • Consider use of external firewall devices such as EAGLE40-07 from Belden to establish VPN connections. For more details refer to “Modicon Controller Systems Cybersecurity, User Guide”: https://www.se.com/ww/en/download/document/EIO0000001999/ • Ensure the M340 CPU is running with the memory protection activated by configuring the input bit to a physical input, for more details refer to the following guideline “Modicon Controller Systems Cybersecurity, User Guide” chapter “Controler Memory Protection”: https://www.se.com/ww/en/download/document/EIO0000001999/
https://www.se.com/ww/en/download/document/31007131K01000/ - MitigationModicon MC80 Firmware All Versions installed on Modicon MC80 Controller (part numbers BMKC80)
Schneider Electric is establishing a remediation plan for all future versions of Modicon MC80 that will include a fix for CVE-2024-8933. We will update this document when the remediation is available. Until then, customers should immediately apply the following mitigations to reduce the risk of exploit: • Setup network segmentation and implement a firewall to block all unauthorized access to port 502/TCP • Configure the Access Control List following the recommendations of the user manuals: “MC80 Programmable Logic Controller(PLC), User Manual” in the section “Access Control List (ACL)”: https://www.se.com/ww/en/download/document/EIO0000002071/ • Consider use of external firewall devices such as EAGLE40-07 from Belden to establish VPN connections. For more details refer to “Modicon Controller Systems Cybersecurity, User Guide”: https://www.se.com/ww/en/download/document/EIO0000001999/
https://www.se.com/ww/en/download/document/EIO0000002071/ - MitigationModicon Momentum Unity M1E Processor Firmware Versions prior to SV2.90 installed on Modicon Momentum Unity M1E Processor Controller (171CBU*)
Customers should immediately apply the following mitigations to reduce the risk of exploit: • Setup network segmentation and implement a firewall to block all unauthorized access to port 502/TCP • Configure the Access Control List following the recommendations of the user manuals: “Momentum for EcoStruxure™ Control Expert - 171CBU78090, 171CBU98090, 171CBU98091 Processors, User Guide” in the section “Controlling Access”: https://www.se.com/ww/en/download/document/HRB44124/ • Consider use of external firewall devices such as EAGLE40-07 from Belden to establish VPN connections. For more details refer to “Modicon Controller Systems Cybersecurity, User Guide”: https://www.se.com/ww/en/download/document/EIO0000001999/
https://www.se.com/ww/en/download/document/HRB44124/ - FixedEcoStruxure™ Control Expert
EcoStruxure™ Control Expert V16.2 HF003 includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/product-range/548-ecostruxure-control-expert-unity-pro/#software-and-firmware
https://www.se.com/ww/en/product-range/548-ecostruxure-control-expert-unity-pro/#software-and-firmware - FixedEcoStruxure™ Control Expert
EcoStruxure™ Control Expert V16.2 HF003 includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/product-range/548-ecostruxure-control-expert-unity-pro/#software-and-firmware
https://www.se.com/ww/en/product-range/548-ecostruxure-control-expert-unity-pro/#software-and-firmware - FixedModicon M340 CPU Firmware Versions prior to SV3.70 installed on Modicon M340 CPU Controller (part numbers BMXP34*)
Version 3.70 of Modicon M340 includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/product-range/1468-modicon-m340/#software-and-firmware
https://www.se.com/ww/en/product-range/1468-modicon-m340/#software-and-firmware - FixedModicon M340 CPU Firmware Versions since SV3.60 and prior to SV3.70 installed on Modicon M340 CPU Controller (part numbers BMXP34*)
Version 3.70 of Modicon M340 includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/product-range/1468-modicon-m340/#software-and-firmware
https://www.se.com/ww/en/product-range/1468-modicon-m340/#software-and-firmware - FixedModicon Momentum Unity M1E Processor Firmware Versions prior to SV2.90 installed on Modicon Momentum Unity M1E Processor Controller (171CBU*)
Firmware SV2.90 includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/product-range/535-modicon-momentum/#software-and-firmware Important: Customer needs to use version of EcoStruxure™ Control Expert v16.2 HF003 minimum to connect with the latest version of Modicon Momentum.
https://www.se.com/ww/en/product-range/535-modicon-momentum/#software-and-firmware
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