{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Amir Zaltzman"
        ],
        "organization": "Tel Aviv University",
        "summary": "reporting these vulnerabilities to Schneider Electric."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited",
      "tlp": {
        "label": "WHITE",
        "url": "https://us-cert.cisa.gov/tlp/"
      }
    },
    "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 /\r\nMomentum / MC80 products.\r\nModicon PAC control and monitor industrial operations.\r\nFailure to apply the provided remediations/mitigations below may risk unauthorized access to \r\nthe controller, which could result in the possibility of denial of service and loss of confidentiality, \r\nintegrity of the controller.",
        "title": "Overview"
      },
      {
        "category": "summary",
        "text": "The severity of vulnerabilities was calculated using the CVSS Base metrics for 4.0 (CVSS v4.0) https://www.first.org/cvss/calculator/4.0 . CVSS v3.1 will be still evaluated until the adoption of CVSS v4.0 by the industry. The severity was calculated without incorporating the Temporal and Environmental metrics. Schneider Electric recommends that customers score the CVSS Environmental metrics, which are specific to end-user organizations, and consider factors such as the presence of mitigations in that environment. Environmental metrics may refine the relative severity posed by the vulnerabilities described in this document within a customer\u0027s environment.",
        "title": "Overview"
      },
      {
        "category": "summary",
        "text": "Customers should use appropriate patching methodologies when applying these patches to their systems. We strongly recommend the use of back-ups and evaluating the impact of these patches in a Test and Development environment or on an offline infrastructure. Contact Schneider Electric\u2019s Customer Care Center if you need assistance removing a patch. If customers choose not to apply the remediation provided above, they should immediately apply the following mitigations to reduce the risk of exploit.",
        "title": "Overview"
      },
      {
        "category": "legal_disclaimer",
        "text": "All information products included in https://us-cert.cisa.gov/ics are provided \"as is\" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/.",
        "title": "Legal Notice"
      },
      {
        "category": "other",
        "text": "This CISA CSAF advisory was converted from Schneider Electric CPCERT\u0027s CSAF advisory.",
        "title": "Advisory Conversion Disclaimer"
      },
      {
        "category": "other",
        "text": "Commercial Facilities, Critical Manufacturing, Energy",
        "title": "Critical infrastructure sectors"
      },
      {
        "category": "other",
        "text": "Worldwide",
        "title": "Countries/areas deployed"
      },
      {
        "category": "other",
        "text": "France",
        "title": "Company headquarters location"
      },
      {
        "category": "general",
        "text": "CISA recommends users take defensive measures to minimize the exploitation risk of this vulnerability.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Locate control system networks and remote devices behind firewalls and isolate them from business networks.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "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.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "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.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "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.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.",
        "title": "Recommended Practices"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "central@cisa.dhs.gov",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "references": [
      {
        "category": "self",
        "summary": "Modicon Controllers M340 / Momentum / MC80 - SEVD-2024-317-03 CSAF Version",
        "url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2024-317-03\u0026p_enDocType=Security+and+Safety+Notice\u0026p_File_Name=sevd-2024-317-03.json"
      },
      {
        "category": "self",
        "summary": "Modicon Controllers M340 / Momentum / MC80 - SEVD-2024-317-03 PDF Version",
        "url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2024-317-03\u0026p_enDocType=Security+and+Safety+Notice\u0026p_File_Name=sevd-2024-317-03.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Cybersecurity Best Practices",
        "url": "https://www.se.com/us/en/download/document/7EN52-0390/"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-24-326-04 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2024/icsa-24-326-04.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-24-326-04 - Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-24-326-04"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/resources-tools/resources/ics-recommended-practices"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/topics/industrial-control-systems"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B"
      }
    ],
    "title": "Schneider Electric Modicon M340, MC80, and Momentum Unity M1E",
    "tracking": {
      "current_release_date": "2024-11-12T00:00:00.000000Z",
      "generator": {
        "date": "2024-11-12T00:00:00.000000Z",
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-24-326-04",
      "initial_release_date": "2024-11-12T00:00:00.000000Z",
      "revision_history": [
        {
          "date": "2024-11-12T00:00:00.000000Z",
          "number": "1.0.0",
          "summary": "Original Release"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003cSV3.65",
                "product": {
                  "name": "Schneider Electric Modicon M340 CPU (part numbers BMXP34*) Versions prior to SV3.65",
                  "product_id": "CSAFPID-0001",
                  "product_identification_helper": {
                    "model_numbers": [
                      "BMXP34*"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Modicon M340 CPU (part numbers BMXP34*)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Schneider Electric Modicon MC80 (part numbers BMKC80) All versions",
                  "product_id": "CSAFPID-0002",
                  "product_identification_helper": {
                    "model_numbers": [
                      "BMKC80"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Modicon MC80 (part numbers BMKC80)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Schneider Electric Modicon Momentum Unity M1E Processor (171CBU*) All versions",
                  "product_id": "CSAFPID-0003",
                  "product_identification_helper": {
                    "model_numbers": [
                      "171CBU*"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Modicon Momentum Unity M1E Processor (171CBU*)"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "SV3.65",
                "product": {
                  "name": "Schneider Electric Modicon M340 SV3.65",
                  "product_id": "CSAFPID-0004"
                }
              }
            ],
            "category": "product_name",
            "name": "Modicon M340"
          }
        ],
        "category": "vendor",
        "name": "Schneider Electric"
      }
    ]
  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Avishai Wool",
            "Amir Zaltzman"
          ],
          "organization": "Tel Aviv University"
        }
      ],
      "cve": "CVE-2024-8936",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "notes": [
        {
          "category": "description",
          "text": "CWE-20: Improper Input Validation vulnerability exists that could lead to tampering a parameter \r\nof the controller memory after a successful Man In The Middle attack followed by Read Physical \r\nMemory operation leading to loss of confidentiality of controller memory.",
          "title": "CVE Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-0004"
        ],
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "\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 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": [
            "CSAFPID-0001"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/download/document/31007131K01000/"
        },
        {
          "category": "vendor_fix",
          "details": "Version SV3.65 of Modicon M340 firmware includes a fix for these\r\nvulnerabilities and is available for download here: \r\nhttps://www.se.com/ww/en/product-range/1468- modicon-m340",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/product-range/1468-modicon-m340"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ],
      "title": "CVE-2024-8936"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Amir Zaltzman"
          ],
          "organization": "Tel Aviv University"
        }
      ],
      "cve": "CVE-2024-8937",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "notes": [
        {
          "category": "description",
          "text": "CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer \r\nvulnerability exists that could cause potential arbitrary code execution after a successful Man In The Middle attack followed by sending crafted Modbus command to tamper with a function call \r\nused for authentication process.",
          "title": "CVE Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-0004"
        ],
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002",
          "CSAFPID-0003"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "\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 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": [
            "CSAFPID-0001"
          ],
          "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 fixes for CVE-2024-8937 and CVE-2024-\r\n8938. We will update this document when the remediations are available. \r\nUntil then, customers should immediately apply the following mitigations to \r\nreduce the risk 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: \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\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": [
            "CSAFPID-0002"
          ],
          "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 fixes for CVE-2024-8937 and CVE\u00022024-8938. We will update this document when the remediations are\r\navailable. Until then, customers should immediately apply the following \r\nmitigations to reduce the risk of exploit:\r\n\u2022 Setup network segmentation and implement a firewall to block all \r\nunauthorized access to port 502/TCP \r\n 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": [
            "CSAFPID-0003"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/download/document/HRB44124/"
        },
        {
          "category": "vendor_fix",
          "details": "Version SV3.65 of Modicon M340 firmware includes a fix for these\r\nvulnerabilities and is available for download here: \r\nhttps://www.se.com/ww/en/product-range/1468- modicon-m340",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/product-range/1468-modicon-m340"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003"
          ]
        }
      ],
      "title": "CVE-2024-8937"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Amir Zaltzman"
          ],
          "organization": "Tel Aviv University"
        }
      ],
      "cve": "CVE-2024-8938",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "notes": [
        {
          "category": "description",
          "text": "CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer\r\nvulnerability exists that could cause potential arbitrary code execution after a successful Man-In \r\n-The Middle attack followed by sending crafted Modbus command in order to tamper with a \r\nfunction call used to evaluate memory size.",
          "title": "CVE Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-0004"
        ],
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002",
          "CSAFPID-0003"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "\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 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": [
            "CSAFPID-0001"
          ],
          "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 fixes for CVE-2024-8937 and CVE-2024-\r\n8938. We will update this document when the remediations are available. \r\nUntil then, customers should immediately apply the following mitigations to \r\nreduce the risk 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: \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\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": [
            "CSAFPID-0002"
          ],
          "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 fixes for CVE-2024-8937 and CVE\u00022024-8938. We will update this document when the remediations are\r\navailable. Until then, customers should immediately apply the following \r\nmitigations to reduce the risk of exploit:\r\n\u2022 Setup network segmentation and implement a firewall to block all \r\nunauthorized access to port 502/TCP \r\n 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": [
            "CSAFPID-0003"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/download/document/HRB44124/"
        },
        {
          "category": "vendor_fix",
          "details": "Version SV3.65 of Modicon M340 firmware includes a fix for these\r\nvulnerabilities and is available for download here: \r\nhttps://www.se.com/ww/en/product-range/1468- modicon-m340",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/product-range/1468-modicon-m340"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003"
          ]
        }
      ],
      "title": "CVE-2024-8938"
    }
  ]
}

{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Amir Zaltzman"
        ],
        "organization": "Tel Aviv University",
        "summary": "reporting these vulnerabilities to Schneider Electric."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited",
      "tlp": {
        "label": "WHITE",
        "url": "https://us-cert.cisa.gov/tlp/"
      }
    },
    "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 /\r\nMomentum / MC80 products.\r\nModicon PAC control and monitor industrial operations.\r\nFailure to apply the provided remediations/mitigations below may risk unauthorized access to \r\nthe controller, which could result in the possibility of denial of service and loss of confidentiality, \r\nintegrity of the controller.",
        "title": "Overview"
      },
      {
        "category": "summary",
        "text": "The severity of vulnerabilities was calculated using the CVSS Base metrics for 4.0 (CVSS v4.0) https://www.first.org/cvss/calculator/4.0 . CVSS v3.1 will be still evaluated until the adoption of CVSS v4.0 by the industry. The severity was calculated without incorporating the Temporal and Environmental metrics. Schneider Electric recommends that customers score the CVSS Environmental metrics, which are specific to end-user organizations, and consider factors such as the presence of mitigations in that environment. Environmental metrics may refine the relative severity posed by the vulnerabilities described in this document within a customer\u0027s environment.",
        "title": "Overview"
      },
      {
        "category": "summary",
        "text": "Customers should use appropriate patching methodologies when applying these patches to their systems. We strongly recommend the use of back-ups and evaluating the impact of these patches in a Test and Development environment or on an offline infrastructure. Contact Schneider Electric\u2019s Customer Care Center if you need assistance removing a patch. If customers choose not to apply the remediation provided above, they should immediately apply the following mitigations to reduce the risk of exploit.",
        "title": "Overview"
      },
      {
        "category": "legal_disclaimer",
        "text": "All information products included in https://us-cert.cisa.gov/ics are provided \"as is\" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/.",
        "title": "Legal Notice"
      },
      {
        "category": "other",
        "text": "This CISA CSAF advisory was converted from Schneider Electric CPCERT\u0027s CSAF advisory.",
        "title": "Advisory Conversion Disclaimer"
      },
      {
        "category": "other",
        "text": "Commercial Facilities, Critical Manufacturing, Energy",
        "title": "Critical infrastructure sectors"
      },
      {
        "category": "other",
        "text": "Worldwide",
        "title": "Countries/areas deployed"
      },
      {
        "category": "other",
        "text": "France",
        "title": "Company headquarters location"
      },
      {
        "category": "general",
        "text": "CISA recommends users take defensive measures to minimize the exploitation risk of this vulnerability.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Locate control system networks and remote devices behind firewalls and isolate them from business networks.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "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.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "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.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "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.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.",
        "title": "Recommended Practices"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "central@cisa.dhs.gov",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "references": [
      {
        "category": "self",
        "summary": "Modicon Controllers M340 / Momentum / MC80 - SEVD-2024-317-03 CSAF Version",
        "url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2024-317-03\u0026p_enDocType=Security+and+Safety+Notice\u0026p_File_Name=sevd-2024-317-03.json"
      },
      {
        "category": "self",
        "summary": "Modicon Controllers M340 / Momentum / MC80 - SEVD-2024-317-03 PDF Version",
        "url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2024-317-03\u0026p_enDocType=Security+and+Safety+Notice\u0026p_File_Name=sevd-2024-317-03.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Cybersecurity Best Practices",
        "url": "https://www.se.com/us/en/download/document/7EN52-0390/"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-24-326-04 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2024/icsa-24-326-04.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-24-326-04 - Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-24-326-04"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/resources-tools/resources/ics-recommended-practices"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/topics/industrial-control-systems"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B"
      }
    ],
    "title": "Schneider Electric Modicon M340, MC80, and Momentum Unity M1E",
    "tracking": {
      "current_release_date": "2024-11-12T00:00:00.000000Z",
      "generator": {
        "date": "2024-11-12T00:00:00.000000Z",
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-24-326-04",
      "initial_release_date": "2024-11-12T00:00:00.000000Z",
      "revision_history": [
        {
          "date": "2024-11-12T00:00:00.000000Z",
          "number": "1.0.0",
          "summary": "Original Release"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003cSV3.65",
                "product": {
                  "name": "Schneider Electric Modicon M340 CPU (part numbers BMXP34*) Versions prior to SV3.65",
                  "product_id": "CSAFPID-0001",
                  "product_identification_helper": {
                    "model_numbers": [
                      "BMXP34*"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Modicon M340 CPU (part numbers BMXP34*)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Schneider Electric Modicon MC80 (part numbers BMKC80) All versions",
                  "product_id": "CSAFPID-0002",
                  "product_identification_helper": {
                    "model_numbers": [
                      "BMKC80"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Modicon MC80 (part numbers BMKC80)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Schneider Electric Modicon Momentum Unity M1E Processor (171CBU*) All versions",
                  "product_id": "CSAFPID-0003",
                  "product_identification_helper": {
                    "model_numbers": [
                      "171CBU*"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Modicon Momentum Unity M1E Processor (171CBU*)"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "SV3.65",
                "product": {
                  "name": "Schneider Electric Modicon M340 SV3.65",
                  "product_id": "CSAFPID-0004"
                }
              }
            ],
            "category": "product_name",
            "name": "Modicon M340"
          }
        ],
        "category": "vendor",
        "name": "Schneider Electric"
      }
    ]
  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Avishai Wool",
            "Amir Zaltzman"
          ],
          "organization": "Tel Aviv University"
        }
      ],
      "cve": "CVE-2024-8936",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "notes": [
        {
          "category": "description",
          "text": "CWE-20: Improper Input Validation vulnerability exists that could lead to tampering a parameter \r\nof the controller memory after a successful Man In The Middle attack followed by Read Physical \r\nMemory operation leading to loss of confidentiality of controller memory.",
          "title": "CVE Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-0004"
        ],
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "\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 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": [
            "CSAFPID-0001"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/download/document/31007131K01000/"
        },
        {
          "category": "vendor_fix",
          "details": "Version SV3.65 of Modicon M340 firmware includes a fix for these\r\nvulnerabilities and is available for download here: \r\nhttps://www.se.com/ww/en/product-range/1468- modicon-m340",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/product-range/1468-modicon-m340"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ],
      "title": "CVE-2024-8936"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Amir Zaltzman"
          ],
          "organization": "Tel Aviv University"
        }
      ],
      "cve": "CVE-2024-8937",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "notes": [
        {
          "category": "description",
          "text": "CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer \r\nvulnerability exists that could cause potential arbitrary code execution after a successful Man In The Middle attack followed by sending crafted Modbus command to tamper with a function call \r\nused for authentication process.",
          "title": "CVE Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-0004"
        ],
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002",
          "CSAFPID-0003"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "\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 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": [
            "CSAFPID-0001"
          ],
          "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 fixes for CVE-2024-8937 and CVE-2024-\r\n8938. We will update this document when the remediations are available. \r\nUntil then, customers should immediately apply the following mitigations to \r\nreduce the risk 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: \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\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": [
            "CSAFPID-0002"
          ],
          "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 fixes for CVE-2024-8937 and CVE\u00022024-8938. We will update this document when the remediations are\r\navailable. Until then, customers should immediately apply the following \r\nmitigations to reduce the risk of exploit:\r\n\u2022 Setup network segmentation and implement a firewall to block all \r\nunauthorized access to port 502/TCP \r\n 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": [
            "CSAFPID-0003"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/download/document/HRB44124/"
        },
        {
          "category": "vendor_fix",
          "details": "Version SV3.65 of Modicon M340 firmware includes a fix for these\r\nvulnerabilities and is available for download here: \r\nhttps://www.se.com/ww/en/product-range/1468- modicon-m340",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/product-range/1468-modicon-m340"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003"
          ]
        }
      ],
      "title": "CVE-2024-8937"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Amir Zaltzman"
          ],
          "organization": "Tel Aviv University"
        }
      ],
      "cve": "CVE-2024-8938",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "notes": [
        {
          "category": "description",
          "text": "CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer\r\nvulnerability exists that could cause potential arbitrary code execution after a successful Man-In \r\n-The Middle attack followed by sending crafted Modbus command in order to tamper with a \r\nfunction call used to evaluate memory size.",
          "title": "CVE Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-0004"
        ],
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002",
          "CSAFPID-0003"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "\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 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": [
            "CSAFPID-0001"
          ],
          "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 fixes for CVE-2024-8937 and CVE-2024-\r\n8938. We will update this document when the remediations are available. \r\nUntil then, customers should immediately apply the following mitigations to \r\nreduce the risk 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: \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\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": [
            "CSAFPID-0002"
          ],
          "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 fixes for CVE-2024-8937 and CVE\u00022024-8938. We will update this document when the remediations are\r\navailable. Until then, customers should immediately apply the following \r\nmitigations to reduce the risk of exploit:\r\n\u2022 Setup network segmentation and implement a firewall to block all \r\nunauthorized access to port 502/TCP \r\n 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": [
            "CSAFPID-0003"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/download/document/HRB44124/"
        },
        {
          "category": "vendor_fix",
          "details": "Version SV3.65 of Modicon M340 firmware includes a fix for these\r\nvulnerabilities and is available for download here: \r\nhttps://www.se.com/ww/en/product-range/1468- modicon-m340",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/product-range/1468-modicon-m340"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003"
          ]
        }
      ],
      "title": "CVE-2024-8938"
    }
  ]
}

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "CWE-20: Improper Input Validation vulnerability exists that could lead to loss of confidentiality of controller memory\nafter a successful Man-In-The-Middle attack followed by sending a crafted Modbus function call used to tamper\nwith memory."
    },
    {
      "lang": "es",
      "value": "CWE-20: Existe una vulnerabilidad de validaci\u00f3n de entrada incorrecta que podr\u00eda provocar la p\u00e9rdida de confidencialidad de la memoria del controlador despu\u00e9s de un ataque Man-In-The-Middle exitoso seguido del env\u00edo de una llamada de funci\u00f3n Modbus manipulada para alterar la memoria."
    }
  ],
  "id": "CVE-2024-8936",
  "lastModified": "2024-11-13T17:01:16.850",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 4.2,
        "source": "cybersecurity@se.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "automatable": "NOT_DEFINED",
          "availabilityRequirements": "NOT_DEFINED",
          "baseScore": 8.3,
          "baseSeverity": "HIGH",
          "confidentialityRequirements": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirements": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubsequentSystemAvailability": "NOT_DEFINED",
          "modifiedSubsequentSystemConfidentiality": "NOT_DEFINED",
          "modifiedSubsequentSystemIntegrity": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnerableSystemAvailability": "NOT_DEFINED",
          "modifiedVulnerableSystemConfidentiality": "NOT_DEFINED",
          "modifiedVulnerableSystemIntegrity": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "recovery": "NOT_DEFINED",
          "safety": "NOT_DEFINED",
          "subsequentSystemAvailability": "NONE",
          "subsequentSystemConfidentiality": "NONE",
          "subsequentSystemIntegrity": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "vulnerableSystemAvailability": "NONE",
          "vulnerableSystemConfidentiality": "HIGH",
          "vulnerableSystemIntegrity": "LOW"
        },
        "source": "cybersecurity@se.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-11-13T05:15:20.540",
  "references": [
    {
      "source": "cybersecurity@se.com",
      "url": "https://download.schneider-electric.com/doc/SEVD-2024-317-03/SEVD-2024-317-03.pdf"
    }
  ],
  "sourceIdentifier": "cybersecurity@se.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "cybersecurity@se.com",
      "type": "Primary"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2024-8936"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-13T05:15:20Z",
    "severity": "HIGH"
  },
  "details": "CWE-20: Improper Input Validation vulnerability exists that could lead to loss of confidentiality of controller memory\nafter a successful Man-In-The-Middle attack followed by sending a crafted Modbus function call used to tamper\nwith memory.",
  "id": "GHSA-rrmf-46w6-f74r",
  "modified": "2024-11-13T06:30:29Z",
  "published": "2024-11-13T06:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-8936"
    },
    {
      "type": "WEB",
      "url": "https://download.schneider-electric.com/doc/SEVD-2024-317-03/SEVD-2024-317-03.pdf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}