{
  "document": {
    "acknowledgments": [
      {
        "organization": "Siemens",
        "summary": "reporting this vulnerability to CISA"
      }
    ],
    "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 unauthenticated remote attackers to bypass authentication and gain access to the application. ",
        "title": "Risk evaluation"
      },
      {
        "category": "other",
        "text": "Critical Infrastructure",
        "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. Specifically, users should:",
        "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 secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current 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 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 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 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": "No known public exploits specifically target these vulnerabilities.",
        "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"
      }
    ],
    "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-851884: Authentication Bypass Vulnerability in Mendix SAML Module - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-851884.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-23-075-05 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2023/icsa-23-075-05.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-23-075-05 Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-23-075-05"
      },
      {
        "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/uscert/ics/recommended-practices"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://cisa.gov/ics"
      },
      {
        "category": "external",
        "summary": "SSA-851884: Authentication Bypass Vulnerability in Mendix SAML Module - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-851884.pdf"
      },
      {
        "category": "external",
        "summary": "SSA-851884: Authentication Bypass Vulnerability in Mendix SAML Module - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-851884.txt"
      }
    ],
    "title": "Siemens Mendix SAML Module",
    "tracking": {
      "current_release_date": "2023-04-03T19:38:42.684957Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-23-075-05",
      "initial_release_date": "2023-04-03T19:38:42.684957Z",
      "revision_history": [
        {
          "date": "2023-04-03T19:38:42.684957Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "CSAF Creation Date"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All Versions \u003e= 1.16.4 \u003c 1.17.2",
                "product": {
                  "name": "Mendix SAML (Mendix 7 compatible)",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "Mendix SAML (Mendix 7 compatible)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e= 2.2.0 \u003c 2.2.3",
                "product": {
                  "name": "Mendix SAML (Mendix 8 compatible)",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "Mendix SAML (Mendix 8 compatible)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e= 3.1.9 \u003c 3.2.5",
                "product": {
                  "name": "Mendix SAML (Mendix 9 compatible, New Track)",
                  "product_id": "CSAFPID-0003"
                }
              }
            ],
            "category": "product_name",
            "name": "Mendix SAML (Mendix 9 compatible, New Track)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e= 3.1.9 \u003c 3.2.5",
                "product": {
                  "name": "Mendix SAML (Mendix 9 compatible, Upgrade Track)",
                  "product_id": "CSAFPID-0004"
                }
              }
            ],
            "category": "product_name",
            "name": "Mendix SAML (Mendix 9 compatible, Upgrade Track)"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-25957",
      "cwe": {
        "id": "CWE-303",
        "name": "Incorrect Implementation of Authentication Algorithm"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The affected versions of the module insufficiently verifies the SAML assertions. This could allow unauthenticated remote attackers to bypass authentication and get access to the application.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002",
          "CSAFPID-0003",
          "CSAFPID-0004"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-25957"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "\"Use Encryption\" setting should be set to \"On\" in the SAML module setting",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V1.17.3 or later version",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V2.3.0 or later version",
          "product_ids": [
            "CSAFPID-0002"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.3.0 or later version",
          "product_ids": [
            "CSAFPID-0003",
            "CSAFPID-0004"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174/"
        },
        {
          "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: \nhttps://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\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"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/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"
          ]
        }
      ],
      "title": "CVE-2023-25957"
    }
  ]
}