{
  "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 a vulnerability in its Modicon Managed Switch products. \r\nThe Modicon Managed Switch products are designed for the special requirements of industrial \r\nautomation. The devices allow users to set up switched Industrial Ethernet networks.\r\nFailure to apply the firmware upgrade or mitigations provided below may allow an attacker to \r\nchange the password of any user, which could cause all or part of the switch to be controlled by \r\nthe attacker. That could result in various attack types like denial of service or provide access to \r\nunauthorized devices on the network.",
        "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 Managed Switch - SEVD-2021-130-01 PDF Version",
        "url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-130-01\u0026p_enDocType=Security+and+Safety+Notice\u0026p_File_Name=SEVD-2021-130-01_Modicon_Managed_Switch_Security_Notification.pdf"
      },
      {
        "category": "self",
        "summary": "Modicon Managed Switch - SEVD-2021-130-01 CSAF Version",
        "url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-130-01\u0026p_enDocType=Security+and+Safety+Notice\u0026p_File_Name=sevd-2021-130-01.json"
      },
      {
        "category": "external",
        "summary": "Recommended Cybersecurity Best Practices",
        "url": "https://www.se.com/us/en/download/document/7EN52-0390/"
      }
    ],
    "title": "Modicon Managed Switch",
    "tracking": {
      "current_release_date": "2021-05-11T00:00:00.000Z",
      "generator": {
        "date": "2021-05-11T00:00:00Z",
        "engine": {
          "name": "Schneider Electric CSAF Generator",
          "version": "1.2"
        }
      },
      "id": "SEVD-2021-130-01",
      "initial_release_date": "2021-05-11T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2021-05-11T00:00:00.000Z",
          "number": "1.0.0",
          "summary": "Original Release"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=8.21",
                "product": {
                  "name": "Schneider Electric Modicon Managed Switch MCSESM* and MCSESP* V8.21 and prior",
                  "product_id": "1",
                  "product_identification_helper": {
                    "model_numbers": [
                      "MCSESM*",
                      "MCSESP*"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Modicon Managed Switch MCSESM* and MCSESP*"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "8.22",
                "product": {
                  "name": "Schneider Electric Modicon Managed Switch Version 8.22",
                  "product_id": "2"
                }
              }
            ],
            "category": "product_name",
            "name": "Modicon Managed Switch"
          }
        ],
        "category": "vendor",
        "name": "Schneider Electric"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-22731",
      "cwe": {
        "id": "CWE-640",
        "name": "Weak Password Recovery Mechanism for Forgotten Password"
      },
      "notes": [
        {
          "category": "description",
          "text": "CWE-640: Weak Password Recovery Mechanism for Forgotten Password vulnerability\r\nexists that could cause an unauthorized password change through HTTP / HTTPS when basic \r\nuser information is known by a remote attacker.",
          "title": "CVE Description"
        }
      ],
      "product_status": {
        "fixed": [
          "2"
        ],
        "known_affected": [
          "1"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Version 8.22 of the Modicon Managed Switch products includes a fix for this vulnerability and is \r\navailable for download here: The upgrade procedure is detailed in the MCSESM, MCSESM-E Managed Switch User Manual \r\nConfiguration available below, is also applicable for MCSESP references. It is important to note \r\nthat the upgrade procedure must be applied twice with the same version to prevent rollback.\r\nUser Manual Configuration: https://download.schneider\u0002electric.com/files?p_Doc_Ref=QGH59056\r\nCustomers should use appropriate patching methodologies when applying these patches to their \r\nsystems. We strongly recommend the use of back-ups and evaluating the impact of these patches \r\nin a Test and Development environment or on an offline infrastructure. Contact Schneider \r\nElectric\u0027s Customer Care Center if you need assistance removing a patch.",
          "product_ids": [
            "1"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/product-range-download/584-modicon-switch/?selected-node-id=12144236472#/software-firmware-tab"
        },
        {
          "category": "mitigation",
          "details": "If customers choose not to apply the remediation provided above, they should immediately apply \r\nthe following mitigations to reduce the risk of exploit: \r\n\u2022 Set non-guessable usernames\r\n\u2022 Configure IP address access restrictions \r\n\u2022 Deactivate device access through HTTP / HTTPS.",
          "product_ids": [
            "1"
          ],
          "restart_required": {
            "category": "none"
          }
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "1"
          ]
        }
      ],
      "title": "CVE-2021-22731"
    }
  ]
}