{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Lasse Trolle Borup"
        ],
        "organization": "Danish Cyber Defence",
        "summary": "reporting this vulnerability 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": "This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov",
        "title": "CISA Disclaimer"
      },
      {
        "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": "summary",
        "text": "Successful exploitation of this vulnerability may allow unauthorized command execution by a local user of the Windows engineering workstation, which could result in loss of availability, confidentiality, and integrity of the workstation where EcoStruxure Operator Terminal Expert runtime is installed.",
        "title": "Risk evaluation"
      },
      {
        "category": "other",
        "text": "Commercial Facilities, Energy, Food and Agriculture, Government Facilities, Transportation Systems, Water and Wastewater Systems",
        "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 risk of exploitation of this vulnerability. Specifically, users should:",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.\nCISA also provides a section for control systems security recommended practices on the ICS webpage onus-cert.cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.\nOrganizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA also recommends users take the following measures to protect themselves from social engineering attacks:",
        "title": "Recommended Practices"
      },
      {
        "category": "other",
        "text": "No known public exploits specifically target this vulnerability. This vulnerability is not exploitable remotely. High skill level is needed to exploit.\n",
        "title": "Exploitability"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "Email: CISAservicedesk@cisa.dhs.gov;\n Toll Free: 1-888-282-0870",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "references": [
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-20-336-01 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2020/icsa-20-336-01.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-20-336-01 Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-20-336-01"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://us-cert.cisa.gov/ncas/tips/ST04-014"
      },
      {
        "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://us-cert.cisa.gov/ics/tips/ICS-TIP-12-146-01B"
      }
    ],
    "title": "Schneider Electric EcoStruxure Operator Terminal Expert runtime (Vijeo XD)",
    "tracking": {
      "current_release_date": "2020-12-01T00:00:00.000000Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-20-336-01",
      "initial_release_date": "2020-12-01T00:00:00.000000Z",
      "revision_history": [
        {
          "date": "2020-12-01T00:00:00.000000Z",
          "legacy_version": "Initial",
          "number": "1",
          "summary": "ICSA-20-336-01 Schneider Electric EcoStruxure Operator Terminal Expert runtime (Vijeo XD)"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c= 3.1 Service Pack 1A",
                "product": {
                  "name": "Windows PC using legacy BIOS EcoStruxure Operator Terminal Expert Runtime: 3.1 Service Pack 1A and prior installed",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "Windows PC using legacy BIOS EcoStruxure Operator Terminal Expert Runtime"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c= 3.1 Service Pack 1A",
                "product": {
                  "name": "Harmony iPC (HMIG5U HMIG5U2) using legacy BIOS EcoStruxure Operator Terminal Expert Runtime: 3.1 Service Pack 1A and prior installed",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "Harmony iPC (HMIG5U HMIG5U2) using legacy BIOS EcoStruxure Operator Terminal Expert Runtime"
          }
        ],
        "category": "vendor",
        "name": "Schneider Electric Software, LLC"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2020-7544",
      "cwe": {
        "id": "CWE-269",
        "name": "Improper Privilege Management"
      },
      "notes": [
        {
          "category": "summary",
          "text": "An improper privilege management vulnerability exists that could cause privilege escalation on the workstation when interacting directly with a driver installed by the runtime software of EcoStruxure Operator Terminal Expert.CVE-2020-7544 has been assigned to this vulnerability. A CVSS v3 base score of 7.4 has been calculated; the CVSS vector string is (AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-7544"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "Schneider Electric has prepared Version 3.1 Service Pack 1B of the EcoStruxure Operator Terminal Expert product with a fix for this vulnerability. This fix is also available through Schneider Electric Software Update (SESU). If users choose not to apply the remediation provided above, they should immediately apply the following mitigations to reduce the risk of exploit:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.se.com/ww/en/product-range-download/62621-ecostruxure%E2%84%A2-operator-terminal-expert/#/software-firmware-tab"
        },
        {
          "category": "mitigation",
          "details": "Use EcoStruxure Operator Terminal Expert runtime software only on a trusted workstation.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        },
        {
          "category": "mitigation",
          "details": "Harden workstation following the best cybersecurity practices (antivirus, updated operating systems, strong password policies, application white listing software, etc.) by following Schneider Electric\u0027s best practices guidelines.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.se.com/us/en/download/document/CS-Best-Practices-2019-340/"
        },
        {
          "category": "mitigation",
          "details": "Use Windows PC with UEFI technology. Users can identify if their PC uses the UEFI technology by using the following system command: msinfo32.exe provided by Microsoft Windows. This command provides the system information. The section BIOS mode displays either \u201cUEFI\u201d or \u201cLEGACY\u201d. If the value is UEFI, the PC is not vulnerable, if the value is LEGACY then the PC is vulnerable.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        },
        {
          "category": "mitigation",
          "details": "If the value is UEFI, the PC is not vulnerable, if the value is LEGACY then the PC is vulnerable.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        },
        {
          "category": "mitigation",
          "details": "For further information please refer to SEVD-2020-315-02.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.se.com/ww/en/download/document/SEVD-2020-315-02/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    }
  ]
}