icsa-23-075-05
Vulnerability from csaf_cisa
Published
2023-03-14 00:00
Modified
2025-05-06 06:00
Summary
Siemens Mendix SAML Module

Notes

Summary
The Mendix SAML module insufficiently verifies the SAML assertions. This could allow unauthenticated remote attackers to bypass authentication and get access to the application. Mendix has provided fix releases for the Mendix SAML module and recommends to update to the latest version. Note: For compatibility reasons, fixes for several versions of the Mendix SAML module were introduced in two release steps: - The first fix versions address CVE-2023-25957. It removes the vulnerability, except when the recommended, default configuration option 'Use Encryption' is disabled. - The second fix versions address CVE-2023-29129, which removes the issue for the non default configuration as well.
General Recommendations
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' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
Additional Resources
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories
Terms of Use
Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.
Legal Notice
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/.
Advisory Conversion Disclaimer
This CISA CSAF advisory was converted from Siemens ProductCERT's CSAF advisory.
Critical infrastructure sectors
Multiple
Countries/areas deployed
Worldwide
Company headquarters location
Germany
Recommended Practices
CISA recommends users take defensive measures to minimize the exploitation risk of this vulnerability.
Recommended Practices
Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet.
Recommended Practices
Locate control system networks and remote devices behind firewalls and isolate them from business networks.
Recommended Practices
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.
Recommended Practices
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
Recommended Practices
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.
Recommended Practices
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.
Recommended Practices
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.


To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "organization": "Siemens ProductCERT",
        "summary": "reporting these vulnerabilities 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",
    "notes": [
      {
        "category": "summary",
        "text": "The Mendix SAML module insufficiently verifies the SAML assertions. This could allow unauthenticated remote attackers to bypass authentication and get access to the application.\n\nMendix has provided fix releases for the Mendix SAML module and recommends to update to the latest version.\n\nNote: For compatibility reasons, fixes for several versions of the Mendix SAML module were introduced in two release steps:\n\n- \nThe first fix versions address CVE-2023-25957. It removes the vulnerability, except when the recommended, default configuration option \n\u0027Use Encryption\u0027 is disabled.\n\n- \nThe second fix versions address CVE-2023-29129, which removes the issue for the non default configuration as well.",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "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: \nhttps://www.siemens.com/industrialsecurity",
        "title": "General Recommendations"
      },
      {
        "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": "legal_disclaimer",
        "text": "Siemens Security Advisories are subject to the terms and conditions contained in Siemens\u0027 underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter \"License Terms\"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens\u0027 Global Website (https://www.siemens.com/terms_of_use, hereinafter \"Terms of Use\"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.",
        "title": "Terms of Use"
      },
      {
        "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 Siemens ProductCERT\u0027s CSAF advisory.",
        "title": "Advisory Conversion Disclaimer"
      },
      {
        "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 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": "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": "SSA-851884: Authentication Bypass Vulnerability in Mendix SAML Module - HTML Version",
        "url": "https://cert-portal.siemens.com/productcert/html/ssa-851884.html"
      },
      {
        "category": "self",
        "summary": "SSA-851884: Authentication Bypass Vulnerability in Mendix SAML Module - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-851884.pdf"
      },
      {
        "category": "self",
        "summary": "SSA-851884: Authentication Bypass Vulnerability in Mendix SAML Module - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-851884.txt"
      },
      {
        "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/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": "Siemens Mendix SAML Module",
    "tracking": {
      "current_release_date": "2025-05-06T06:00:00.000000Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-23-075-05",
      "initial_release_date": "2023-03-14T00:00:00.000000Z",
      "revision_history": [
        {
          "date": "2023-03-14T00:00:00.000000Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        },
        {
          "date": "2023-06-13T00:00:00.000000Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Added CVE-2023-29129 and the fix information also for non default configurations"
        },
        {
          "date": "2023-08-08T00:00:00.000000Z",
          "legacy_version": "1.2",
          "number": "3",
          "summary": "Added additional release versions of Mendix SAML, where the fixes have been included"
        },
        {
          "date": "2025-05-06T06:00:00.000000Z",
          "legacy_version": "Revision",
          "number": "4",
          "summary": "Revision - Fixing typos"
        }
      ],
      "status": "final",
      "version": "4"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e=V1.17.3\u003cV1.18.0",
                "product": {
                  "name": "Mendix SAML (Mendix 7 compatible)",
                  "product_id": "CSAFPID-0001"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003e=V1.16.4\u003cV1.17.3",
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            ],
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          },
          {
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                  "product_id": "CSAFPID-0003"
                }
              },
              {
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                  "product_id": "CSAFPID-0005"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003e=V3.1.9\u003cV3.3.1",
                "product": {
                  "name": "Mendix SAML (Mendix 9 latest compatible, New Track)",
                  "product_id": "CSAFPID-0006"
                }
              }
            ],
            "category": "product_name",
            "name": "Mendix SAML (Mendix 9 latest compatible, New Track)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e=V3.3.0\u003cV3.6.0",
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                  "product_id": "CSAFPID-0007"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003e=V3.1.8\u003cV3.3.0",
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                  "name": "Mendix SAML (Mendix 9 latest compatible, Upgrade Track)",
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                }
              }
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            "category": "product_name",
            "name": "Mendix SAML (Mendix 9 latest compatible, Upgrade Track)"
          },
          {
            "branches": [
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                "category": "product_version_range",
                "name": "\u003e=V3.3.1\u003cV3.3.15",
                "product": {
                  "name": "Mendix SAML (Mendix 9.12/9.18 compatible, New Track)",
                  "product_id": "CSAFPID-0009"
                }
              }
            ],
            "category": "product_name",
            "name": "Mendix SAML (Mendix 9.12/9.18 compatible, New Track)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e=V3.3.0\u003cV3.3.14",
                "product": {
                  "name": "Mendix SAML (Mendix 9.12/9.18 compatible, Upgrade Track)",
                  "product_id": "CSAFPID-0010"
                }
              }
            ],
            "category": "product_name",
            "name": "Mendix SAML (Mendix 9.12/9.18 compatible, Upgrade Track)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e=V3.1.9\u003cV3.2.7",
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                  "product_id": "CSAFPID-0011"
                }
              }
            ],
            "category": "product_name",
            "name": "Mendix SAML (Mendix 9.6 compatible, New Track)"
          },
          {
            "branches": [
              {
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                "name": "\u003e=V3.1.8\u003cV3.2.6",
                "product": {
                  "name": "Mendix SAML (Mendix 9.6 compatible, Upgrade Track)",
                  "product_id": "CSAFPID-0012"
                }
              }
            ],
            "category": "product_name",
            "name": "Mendix SAML (Mendix 9.6 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 verify the SAML assertions. This could allow unauthenticated remote attackers to bypass authentication and get access to the application.\r\n\r\nFor compatibility reasons, fix versions still contain this issue, but only when the recommended, default configuration option `\u0027Use Encryption\u0027` is disabled.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0002",
          "CSAFPID-0004",
          "CSAFPID-0006",
          "CSAFPID-0008",
          "CSAFPID-0011",
          "CSAFPID-0012"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V1.17.3 or later version",
          "product_ids": [
            "CSAFPID-0002"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V2.3.0 or later version",
          "product_ids": [
            "CSAFPID-0004"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.2.6 or later version",
          "product_ids": [
            "CSAFPID-0012"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.2.7 or later version",
          "product_ids": [
            "CSAFPID-0011"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.3.0 or later version",
          "product_ids": [
            "CSAFPID-0008"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.3.1 or later version",
          "product_ids": [
            "CSAFPID-0006"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        }
      ],
      "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-0002",
            "CSAFPID-0004",
            "CSAFPID-0006",
            "CSAFPID-0008",
            "CSAFPID-0011",
            "CSAFPID-0012"
          ]
        }
      ],
      "title": "CVE-2023-25957"
    },
    {
      "cve": "CVE-2023-29129",
      "cwe": {
        "id": "CWE-303",
        "name": "Incorrect Implementation of Authentication Algorithm"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The affected versions of the module insufficiently verify the SAML assertions. This could allow unauthenticated remote attackers to bypass authentication and get access to the application.\r\n\r\nThis CVE entry describes the incomplete fix for CVE-2023-25957 in a specific non default configuration.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002",
          "CSAFPID-0003",
          "CSAFPID-0004",
          "CSAFPID-0005",
          "CSAFPID-0006",
          "CSAFPID-0007",
          "CSAFPID-0008",
          "CSAFPID-0009",
          "CSAFPID-0010",
          "CSAFPID-0011",
          "CSAFPID-0012"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V1.17.3 or later version",
          "product_ids": [
            "CSAFPID-0002"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V1.18.0 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-0004"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V2.4.0 or later version",
          "product_ids": [
            "CSAFPID-0003"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.2.6 or later version",
          "product_ids": [
            "CSAFPID-0012"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.2.7 or later version",
          "product_ids": [
            "CSAFPID-0011"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.3.0 or later version",
          "product_ids": [
            "CSAFPID-0008"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.3.1 or later version",
          "product_ids": [
            "CSAFPID-0006"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.3.14 or later version",
          "product_ids": [
            "CSAFPID-0010"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.3.15 or later version",
          "product_ids": [
            "CSAFPID-0009"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.6.0 or later version",
          "product_ids": [
            "CSAFPID-0007"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.6.1 or later version",
          "product_ids": [
            "CSAFPID-0005"
          ],
          "url": "https://marketplace.mendix.com/link/component/1174"
        }
      ],
      "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",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-0010",
            "CSAFPID-0011",
            "CSAFPID-0012"
          ]
        }
      ],
      "title": "CVE-2023-29129"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
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