{
  "document": {
    "acknowledgments": [
      {
        "organization": "FlowFabric BV",
        "summary": "reporting this vulnerability to Siemens"
      }
    ],
    "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 could allow a non-administrative user to gain administrative privileges.",
        "title": "Risk evaluation"
      },
      {
        "category": "other",
        "text": "Multiple",
        "title": "Critical infrastructure sectors"
      },
      {
        "category": "other",
        "text": "Worldwide",
        "title": "Countries/areas deployed"
      },
      {
        "category": "other",
        "text": "Germany",
        "title": "Company headquarters location"
      },
      {
        "category": "general",
        "text": "CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. 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": "For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories",
        "title": "Additional Resources"
      },
      {
        "category": "other",
        "text": "No known public exploits specifically target this vulnerability.",
        "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": "external",
        "summary": "SSA-875726: Privilege Escalation Vulnerability in Mendix - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-875726.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-21-110-07 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2021/icsa-21-110-07.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-21-110-07 Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-21-110-07"
      },
      {
        "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"
      },
      {
        "category": "external",
        "summary": "SSA-875726: Privilege Escalation Vulnerability in Mendix - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-875726.pdf"
      },
      {
        "category": "external",
        "summary": "SSA-875726: Privilege Escalation Vulnerability in Mendix - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-875726.txt"
      }
    ],
    "title": "Siemens Mendix",
    "tracking": {
      "current_release_date": "2021-04-20T00:00:00.000000Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-21-110-07",
      "initial_release_date": "2021-04-20T00:00:00.000000Z",
      "revision_history": [
        {
          "date": "2021-04-20T00:00:00.000000Z",
          "legacy_version": "Initial",
          "number": "1",
          "summary": "ICSA-21-110-07 Siemens Mendix"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V7.23.19",
                "product": {
                  "name": "Mendix Applications using Mendix 7",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "Mendix Applications using Mendix 7"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V8.17.0",
                "product": {
                  "name": "Mendix Applications using Mendix 8",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "Mendix Applications using Mendix 8"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V8.6.9",
                "product": {
                  "name": "Mendix Applications using Mendix 8 (V8.6)",
                  "product_id": "CSAFPID-0003"
                }
              }
            ],
            "category": "product_name",
            "name": "Mendix Applications using Mendix 8 (V8.6)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V8.12.5",
                "product": {
                  "name": "Mendix Applications using Mendix 8 (V8.12)",
                  "product_id": "CSAFPID-0004"
                }
              }
            ],
            "category": "product_name",
            "name": "Mendix Applications using Mendix 8 (V8.12)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V9.0.5",
                "product": {
                  "name": "Mendix Applications using Mendix 9",
                  "product_id": "CSAFPID-0005"
                }
              }
            ],
            "category": "product_name",
            "name": "Mendix Applications using Mendix 9"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-27394",
      "cwe": {
        "id": "CWE-269",
        "name": "Improper Privilege Management"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Authenticated, non-administrative users could modify their privileges by manipulating the user role under certain circumstances, allowing them to gain administrative privileges.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002",
          "CSAFPID-0003",
          "CSAFPID-0004",
          "CSAFPID-0005"
        ]
      },
      "references": [
        {
          "summary": "CVE-2021-27394 - Mendix Applications using Mendix 7",
          "url": "https://docs.mendix.com/releasenotes/studio-pro/7.23"
        },
        {
          "summary": "CVE-2021-27394 - Mendix Applications using Mendix 8",
          "url": "https://docs.mendix.com/releasenotes/studio-pro/8.17"
        },
        {
          "summary": "CVE-2021-27394 - Mendix Applications using Mendix 8 (V8.6)",
          "url": "https://docs.mendix.com/releasenotes/studio-pro/8.6"
        },
        {
          "summary": "CVE-2021-27394 - Mendix Applications using Mendix 8 (V8.12)",
          "url": "https://docs.mendix.com/releasenotes/studio-pro/8.12"
        },
        {
          "summary": "CVE-2021-27394 - Mendix Applications using Mendix 9",
          "url": "https://docs.mendix.com/releasenotes/studio-pro/9.0"
        },
        {
          "summary": "CVE-2021-27394 Mitre 5.0 json",
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-27394.json"
        },
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-27394"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update your Mendix Project to V7.23.19 or later version and redeploy your application",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://docs.mendix.com/releasenotes/studio-pro/7.23"
        },
        {
          "category": "vendor_fix",
          "details": "Update your Mendix Project to V8.17.0 or later version and redeploy your application",
          "product_ids": [
            "CSAFPID-0002"
          ],
          "url": "https://docs.mendix.com/releasenotes/studio-pro/8.17"
        },
        {
          "category": "vendor_fix",
          "details": "Update your Mendix Project to V8.6.9 or later and preferably the latest V8.18 version and redeploy your application",
          "product_ids": [
            "CSAFPID-0003"
          ],
          "url": "https://docs.mendix.com/releasenotes/studio-pro/8.6"
        },
        {
          "category": "vendor_fix",
          "details": "Update your Mendix Project to V8.12.5 or later and preferably the latest V8.18 version and redeploy your application",
          "product_ids": [
            "CSAFPID-0004"
          ],
          "url": "https://docs.mendix.com/releasenotes/studio-pro/8.12"
        },
        {
          "category": "vendor_fix",
          "details": "Update your Mendix Project to V9.0.5 or later version and redeploy your application",
          "product_ids": [
            "CSAFPID-0005"
          ],
          "url": "https://docs.mendix.com/releasenotes/studio-pro/9.0"
        },
        {
          "category": "mitigation",
          "details": "Remove the privilege to manage user roles for non-administrative roles to mitigate this vulnerability for non-administrative users",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005"
          ]
        },
        {
          "category": "mitigation",
          "details": "As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens\u0027 operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\n\nAdditional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005"
          ]
        }
      ],
      "title": "CVE-2021-27394"
    }
  ]
}