{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "We strongly recommend the following industry cybersecurity best practices.\n\nhttps://www.se.com/us/en/download/document/7EN52-0390/\n* Locate control and safety system networks and remote devices behind firewalls and isolate them from the business network.\n* Install physical controls so no unauthorized personnel can access your industrial control and safety systems, components, peripheral equipment, and networks.\n* Place all controllers in locked cabinets and never leave them in the \u201cProgram\u201d mode.\n* Never connect programming software to any network other than the network intended for that device.\n* Scan all methods of mobile data exchange with the isolated network such as CDs, USB drives, etc. before use in the terminals or any node connected to these networks.\n* Never allow mobile devices that have connected to any other network besides the intended network to connect to the safety or control networks without proper sanitation.\n* Minimize network exposure for all control system devices and systems and ensure that they are not accessible from the Internet.\n* When remote access is required, use secure methods, such as Virtual Private Networks (VPNs). Recognize that VPNs may have vulnerabilities and should be updated to the most current version available. Also, understand that VPNs are only as secure as the connected devices.\nFor more information refer to the Schneider Electric Recommended Cybersecurity Best Practices document. \n",
        "title": "General Security Recommendations"
      },
      {
        "category": "general",
        "text": "This document provides an overview of the identified vulnerability or vulnerabilities and actions required to mitigate. For more details and assistance on how to protect your installation, contact your local Schneider Electric representative or Schneider Electric Industrial Cybersecurity Services: https://www.se.com/ww/en/work/solutions/cybersecurity/. These organizations will be fully aware of this situation and can support you through the process.\nFor further information related to cybersecurity in Schneider Electric\u2019s products, visit the company\u2019s cybersecurity support portal page: https://www.se.com/ww/en/work/support/cybersecurity/overview.jsp",
        "title": "For More Information"
      },
      {
        "category": "legal_disclaimer",
        "text": "THIS NOTIFICATION DOCUMENT, THE INFORMATION CONTAINED HEREIN, AND ANY MATERIALS LINKED FROM IT (COLLECTIVELY, THIS \u201cNOTIFICATION\u201d) ARE INTENDED TO HELP PROVIDE AN OVERVIEW OF THE IDENTIFIED SITUATION AND SUGGESTED MITIGATION ACTIONS, REMEDIATION, FIX, AND/OR GENERAL SECURITY RECOMMENDATIONS AND IS PROVIDED ON AN \u201cAS-IS\u201d BASIS WITHOUT WARRANTY OR GUARANTEE OF ANY KIND.  SCHNEIDER ELECTRIC DISCLAIMS ALL WARRANTIES RELATING TO THIS NOTIFICATION, EITHER EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. SCHNEIDER ELECTRIC MAKES NO WARRANTY THAT THE NOTIFICATION WILL RESOLVE THE IDENTIFIED SITUATION. IN NO EVENT SHALL SCHNEIDER ELECTRIC BE LIABLE FOR ANY DAMAGES OR LOSSES WHATSOEVER IN CONNECTION WITH THIS NOTIFICATION, INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF SCHNEIDER ELECTRIC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. YOUR USE OF THIS NOTIFICATION IS AT YOUR OWN RISK, AND YOU ARE SOLELY LIABLE FOR ANY DAMAGES TO YOUR SYSTEMS OR ASSETS OR OTHER LOSSES THAT MAY RESULT FROM YOUR USE OF THIS NOTIFICATION. SCHNEIDER ELECTRIC RESERVES THE RIGHT TO UPDATE OR CHANGE THIS NOTIFICATION AT ANY TIME AND IN ITS SOLE DISCRETION",
        "title": "LEGAL DISCLAIMER"
      },
      {
        "category": "general",
        "text": "At Schneider, we believe access to energy and digital is a basic human right. We empower all to do more with less, ensuring Life Is On everywhere, for everyone, at every moment.\n\nWe provide energy and automation digital solutions for efficiency and sustainability. We combine world-leading energy technologies, real-time automation, software and services into integrated solutions for Homes, Buildings, Data Centers, Infrastructure and Industries.\n\nWe are committed to unleash the infinite possibilities of an open, global, innovative community that is passionate with our Meaningful Purpose, Inclusive and Empowered values.\n\nwww.se.com ",
        "title": "About Schneider Electric"
      },
      {
        "category": "summary",
        "text": "Schneider Electric is aware of multiple vulnerabilities in its Modicon Controllers M340 / Momentum / MC80 \r\nproducts.\r\nModicon PAC products control and monitor industrial operations.\r\nFailure to apply the provided remediations/mitigations below may risk unauthorized access to the controller,\r\nwhich could result in the possibility of denial of service and loss of confidentiality, integrity of the controller.",
        "title": "Overview"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "cpcert@se.com",
      "name": "Schneider Electric CPCERT",
      "namespace": "https://www.se.com/ww/en/work/support/cybersecurity/security-notifications.jsp"
    },
    "references": [
      {
        "category": "self",
        "summary": "Modicon Controllers M340 / Momentum / MC80 - SEVD-2024-317-02  PDF Version",
        "url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2024-317-02\u0026p_enDocType=Security+and+Safety+Notice\u0026p_File_Name=SEVD-2024-317-02.pdf"
      },
      {
        "category": "self",
        "summary": "Modicon Controllers M340 / Momentum / MC80 - SEVD-2024-317-02  CSAF Version",
        "url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2024-317-02\u0026p_enDocType=Security+and+Safety+Notice\u0026p_File_Name=sevd-2024-317-02.json"
      },
      {
        "category": "external",
        "summary": "Recommended Cybersecurity Best Practices",
        "url": "https://www.se.com/us/en/download/document/7EN52-0390/"
      }
    ],
    "title": "Modicon Controllers M340 / Momentum / MC80",
    "tracking": {
      "current_release_date": "2024-11-12T00:00:00.000Z",
      "generator": {
        "date": "2024-11-12T00:00:00.000Z",
        "engine": {
          "name": "Schneider Electric CSAF Generator",
          "version": "1.2"
        }
      },
      "id": "SEVD-2024-317-02",
      "initial_release_date": "2024-11-12T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2024-11-12T00:00:00.000Z",
          "number": "1.0.0",
          "summary": "Original Release"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Schneider Electric Modicon M340 CPU (part numbers BMXP34*) All Version",
                  "product_id": "1",
                  "product_identification_helper": {
                    "model_numbers": [
                      "BMXP34*"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Modicon M340 CPU"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e=SV3.60",
                "product": {
                  "name": "Schneider Electric Modicon M340 CPU (part numbers BMXP34*) All versions since SV3.60",
                  "product_id": "2",
                  "product_identification_helper": {
                    "model_numbers": [
                      "BMXP34*"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Modicon M340 CPU"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Schneider Electric Modicon MC80 (part numbers BMKC80) All Version",
                  "product_id": "3",
                  "product_identification_helper": {
                    "model_numbers": [
                      "BMKC80"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Modicon MC80"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Schneider Electric Modicon Momentum Unity M1E Processor (171CBU*) All Version",
                  "product_id": "4",
                  "product_identification_helper": {
                    "model_numbers": [
                      "171CBU*"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Modicon Momentum Unity M1E Processor"
          }
        ],
        "category": "vendor",
        "name": "Schneider Electric"
      }
    ]
  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Artem Zinenko"
          ],
          "organization": "Kaspersky"
        },
        {
          "names": [
            "Amir Zaltzman"
          ],
          "organization": "Tel Aviv University"
        }
      ],
      "cve": "CVE-2024-8933",
      "cwe": {
        "id": "CWE-924",
        "name": "Improper Enforcement of Message Integrity During Transmission in a Communication Channel"
      },
      "notes": [
        {
          "category": "description",
          "text": "CWE-924: Improper Enforcement of Message Integrity During Transmission in a Communication Channel \r\nvulnerability exists that could cause retrieval of password hash that could lead to denial of service and loss of \r\nconfidentiality and integrity of controllers. To be successful, the attacker needs to inject themself inside the \r\nlogical network while a valid user uploads or downloads a project file into the controller.",
          "title": "CVE Description"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "3",
          "4"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Schneider Electric is establishing a remediation plan for all future versions \r\nof Modicon M340 that will include a fix for CVE-2024-8933 vulnerability and\r\na mitigation for CVE-2024-8935.\r\nWe will update this document when the remediation is available. Until then, \r\ncustomers should immediately apply the following mitigations to reduce the \r\nrisk of exploit:\r\n\u2022 Setup network segmentation and implement a firewall to block all \r\nunauthorized access to port 502/TCP\r\n\u2022 Configure the Access Control List following the recommendations of \r\nthe user manuals: \u201cModicon M340 for Ethernet Communications \r\nModules and Processors User Manual\u201d in chapter \u201cMessaging \r\nConfiguration Parameters\u201d: \r\nhttps://www.se.com/ww/en/download/document/31007131K01000/\r\n\u2022 Consider use of external firewall devices such as EAGLE40-07 from \r\nBelden to establish VPN connections. For more details refer to \r\n\u201cModicon Controller Systems Cybersecurity, User Guide\u201d:\r\nhttps://www.se.com/ww/en/download/document/EIO0000001999/\r\n\u2022 Ensure the M340 CPU is running with the memory protection \r\nactivated by configuring the input bit to a physical input, for more \r\ndetails refer to the following guideline \u201cModicon Controller Systems \r\nCybersecurity, User Guide\u201d chapter \u201cControler Memory Protection\u201d: \r\nhttps://www.se.com/ww/en/download/document/EIO0000001999/",
          "product_ids": [
            "1",
            "2"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/download/document/31007131K01000/"
        },
        {
          "category": "mitigation",
          "details": "Schneider Electric is establishing a remediation plan for all future versions \r\nof Modicon MC80 that will include a fix for CVE-2024-8933. We will update \r\nthis document when the remediation is available. Until then, customers \r\nshould immediately apply the following mitigations to reduce the risk of \r\nexploit:\r\n\u2022 Setup network segmentation and implement a firewall to block all \r\nunauthorized access to port 502/TCP \r\n\u2022 Configure the Access Control List following the recommendations of \r\nthe user manuals: \u201cMC80 Programmable Logic Controller(PLC), \r\nUser Manual\u201d in the section \u201cAccess Control List (ACL)\u201d:\r\nhttps://www.se.com/ww/en/download/document/EIO0000002071\r\nConsider use of external firewall devices such as EAGLE40-07 from \r\nBelden to establish VPN connections. For more details refer to \r\n\u201cModicon Controller Systems Cybersecurity, User Guide\u201d:\r\nhttps://www.se.com/ww/en/download/document/EIO0000001999",
          "product_ids": [
            "3"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/download/document/EIO0000002071/"
        },
        {
          "category": "mitigation",
          "details": "Schneider Electric is establishing a remediation plan for all future versions \r\nof Modicon Momentum that will include a fix for CVE-2024-8933. We will \r\nupdate this document when the remediation is available. Until then, \r\ncustomers should immediately apply the following mitigations to reduce the \r\nrisk of exploit:\r\n\u2022 Setup network segmentation and implement a firewall to block all \r\nunauthorized access to port 502/TCP \r\n\u2022 Configure the Access Control List following the recommendations of \r\nthe user manuals: \u201cMomentum for EcoStruxure\u2122 Control Expert -\r\n171CBU78090, 171CBU98090, 171CBU98091 Processors, User \r\nGuide\u201d in the section \u201cControlling Access\u201d:\r\nhttps://www.se.com/ww/en/download/document/HRB44124/\r\n\u2022 Consider use of external firewall devices such as EAGLE40-07 from \r\nBelden to establish VPN connections. For more details refer to \r\n\u201cModicon Controller Systems Cybersecurity, User Guide\u201d:\r\nhttps://www.se.com/ww/en/download/document/EIO0000001999/",
          "product_ids": [
            "4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/download/document/HRB44124/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 7.5,
            "environmentalSeverity": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 7.5,
            "temporalSeverity": "HIGH",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "1",
            "3",
            "4"
          ]
        }
      ],
      "title": "CVE-2024-8933"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Amir Zaltzman"
          ],
          "organization": "Tel Aviv University"
        }
      ],
      "cve": "CVE-2024-8935",
      "cwe": {
        "id": "CWE-290",
        "name": "Authentication Bypass by Spoofing"
      },
      "notes": [
        {
          "category": "description",
          "text": "CWE-290: Authentication Bypass by Spoofing vulnerability exists that could cause a denial of service and loss \r\nof confidentiality and integrity of controllers when conducting a Man-In-The-Middle attack between the \r\ncontroller and the engineering workstation while a valid user is establishing a communication session. This \r\nvulnerability is inherent to Diffie Hellman algorithm which does not protect against Man-In-The-Middle attacks.",
          "title": "CVE Description"
        }
      ],
      "product_status": {
        "known_affected": [
          "2"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Schneider Electric is establishing a remediation plan for all future versions \r\nof Modicon M340 that will include a fix for CVE-2024-8933 vulnerability and\r\na mitigation for CVE-2024-8935.\r\nWe will update this document when the remediation is available. Until then, \r\ncustomers should immediately apply the following mitigations to reduce the \r\nrisk of exploit:\r\n\u2022 Setup network segmentation and implement a firewall to block all \r\nunauthorized access to port 502/TCP\r\n\u2022 Configure the Access Control List following the recommendations of \r\nthe user manuals: \u201cModicon M340 for Ethernet Communications \r\nModules and Processors User Manual\u201d in chapter \u201cMessaging \r\nConfiguration Parameters\u201d: \r\nhttps://www.se.com/ww/en/download/document/31007131K01000/\r\n\u2022 Consider use of external firewall devices such as EAGLE40-07 from \r\nBelden to establish VPN connections. For more details refer to \r\n\u201cModicon Controller Systems Cybersecurity, User Guide\u201d:\r\nhttps://www.se.com/ww/en/download/document/EIO0000001999/\r\n\u2022 Ensure the M340 CPU is running with the memory protection \r\nactivated by configuring the input bit to a physical input, for more \r\ndetails refer to the following guideline \u201cModicon Controller Systems \r\nCybersecurity, User Guide\u201d chapter \u201cControler Memory Protection\u201d: \r\nhttps://www.se.com/ww/en/download/document/EIO0000001999/",
          "product_ids": [
            "1",
            "2"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/download/document/31007131K01000/"
        },
        {
          "category": "mitigation",
          "details": "Schneider Electric is establishing a remediation plan for all future versions \r\nof Modicon MC80 that will include a fix for CVE-2024-8933. We will update \r\nthis document when the remediation is available. Until then, customers \r\nshould immediately apply the following mitigations to reduce the risk of \r\nexploit:\r\n\u2022 Setup network segmentation and implement a firewall to block all \r\nunauthorized access to port 502/TCP \r\n\u2022 Configure the Access Control List following the recommendations of \r\nthe user manuals: \u201cMC80 Programmable Logic Controller(PLC), \r\nUser Manual\u201d in the section \u201cAccess Control List (ACL)\u201d:\r\nhttps://www.se.com/ww/en/download/document/EIO0000002071\r\nConsider use of external firewall devices such as EAGLE40-07 from \r\nBelden to establish VPN connections. For more details refer to \r\n\u201cModicon Controller Systems Cybersecurity, User Guide\u201d:\r\nhttps://www.se.com/ww/en/download/document/EIO0000001999",
          "product_ids": [
            "3"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/download/document/EIO0000002071/"
        },
        {
          "category": "mitigation",
          "details": "Schneider Electric is establishing a remediation plan for all future versions \r\nof Modicon Momentum that will include a fix for CVE-2024-8933. We will \r\nupdate this document when the remediation is available. Until then, \r\ncustomers should immediately apply the following mitigations to reduce the \r\nrisk of exploit:\r\n\u2022 Setup network segmentation and implement a firewall to block all \r\nunauthorized access to port 502/TCP \r\n\u2022 Configure the Access Control List following the recommendations of \r\nthe user manuals: \u201cMomentum for EcoStruxure\u2122 Control Expert -\r\n171CBU78090, 171CBU98090, 171CBU98091 Processors, User \r\nGuide\u201d in the section \u201cControlling Access\u201d:\r\nhttps://www.se.com/ww/en/download/document/HRB44124/\r\n\u2022 Consider use of external firewall devices such as EAGLE40-07 from \r\nBelden to establish VPN connections. For more details refer to \r\n\u201cModicon Controller Systems Cybersecurity, User Guide\u201d:\r\nhttps://www.se.com/ww/en/download/document/EIO0000001999/",
          "product_ids": [
            "4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/download/document/HRB44124/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "2"
          ]
        }
      ],
      "title": " CVE-2024-8935"
    }
  ]
}