VDE-2020-021

Vulnerability from csaf_endresshauserag - Published: 2020-11-19 14:48 - Updated: 2025-04-11 07:00
Summary
Endress+Hauser: Ecograph T utilizing Webserver firmware version 1.x suffers from improper privilege management
Notes
Summary: The affected device has a web-based user interface with a role-based access system. Users with different roles have different write and read privileges. The access system is based on dynamic "tokens".
Impact: The vulnerability is that user sessions are not closed correctly and a user with fewer rights is assigned the higher rights when he logs on.
Mitigation: Customers should configure a perimeter firewall to block traffic from untrusted networks and users to the device. These recommendations will be incorporated into the device documentation (operating instructions). Change default password for operator, service and admin account. Endress+Hauser will not change this behavior. Customers are recommended to take the measures for Temporary Fix / Mitigation as described above.
CVE-2020-12495

Endress+Hauser Ecograph T (Neutral/Private Label) (RSG35, ORSG35) with Firmware version prior to V2.0.0 is prone to improper privilege management. The affected device has a web-based user interface with a role-based access system. Users with different roles have different write and read privileges. The access system is based on dynamic "tokens". The vulnerability is that user sessions are not closed correctly and a user with fewer rights is assigned the higher rights when he logs on.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-269 - Improper Privilege Management
Mitigation Customers should configure a perimeter firewall to block traffic from untrusted networks and users to the device. These recommendations will be incorporated into the device documentation (operating instructions). Change default password for operator, service and admin account. Endress+Hauser will not change this behavior. Customers are recommended to take the measures for Temporary Fix / Mitigation as described above.
References
Acknowledgments
CERT@VDE certvde.com
Maxim Rupp
To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "organization": "CERT@VDE",
        "summary": "coordination",
        "urls": [
          "https://certvde.com"
        ]
      },
      {
        "organization": "Maxim Rupp",
        "summary": "reported"
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-GB",
    "notes": [
      {
        "category": "summary",
        "text": "The affected device has a web-based user interface with a role-based access system. Users with different roles have different write and read privileges. The access system is based on dynamic \"tokens\".",
        "title": "Summary"
      },
      {
        "category": "description",
        "text": "The vulnerability is that user sessions are not closed correctly and a user with fewer rights is assigned the higher rights when he logs on.",
        "title": "Impact"
      },
      {
        "category": "description",
        "text": "Customers should configure a perimeter firewall to block traffic from untrusted networks and users to the device. These recommendations will be incorporated into the device documentation (operating instructions).\n\nChange default password for operator, service and admin account.\n\nEndress+Hauser will not change this behavior.\nCustomers are recommended to take the measures for Temporary Fix / Mitigation as described above.",
        "title": "Mitigation"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "psirt@endress.com",
      "name": "Endress+Hauser AG",
      "namespace": "https://www.endress.com"
    },
    "references": [
      {
        "category": "external",
        "summary": "CERT@VDE Security Advisories for Endress+Hauser",
        "url": "https://certvde.com/en/advisories/vendor/endress+hauser/"
      },
      {
        "category": "self",
        "summary": "VDE-2020-021: Endress+Hauser: Ecograph T utilizing Webserver firmware version 1.x suffers from improper privilege management - HTML",
        "url": "https://certvde.com/de/advisories/VDE-2020-021/"
      },
      {
        "category": "self",
        "summary": "VDE-2020-021: Endress+Hauser: Ecograph T utilizing Webserver firmware version 1.x suffers from improper privilege management - CSAF",
        "url": "https://endress-hauser.csaf-tp.certvde.com/.well-known/csaf/white/2020/vde-2020-021.json"
      }
    ],
    "title": "Endress+Hauser: Ecograph T utilizing Webserver firmware version 1.x suffers from improper privilege management",
    "tracking": {
      "aliases": [
        "VDE-2020-021"
      ],
      "current_release_date": "2025-04-11T07:00:00.000Z",
      "generator": {
        "date": "2025-04-11T07:53:45.584Z",
        "engine": {
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      "id": "VDE-2020-021",
      "initial_release_date": "2020-11-19T14:48:00.000Z",
      "revision_history": [
        {
          "date": "2020-11-19T14:48:00.000Z",
          "number": "1",
          "summary": "Initial revision."
        },
        {
          "date": "2025-04-11T07:00:00.000Z",
          "number": "2",
          "summary": "Fix: version range"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "V1.0.0 (07/2013)\u003cV2.0.0 (08/2015)",
                "product": {
                  "name": "Firmware V1.0.0 (07/2013)\u003cV2.0.0 (08/2015)",
                  "product_id": "CSAFPID-21003"
                }
              }
            ],
            "category": "product_family",
            "name": "Firmware"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Ecograph T",
                "product": {
                  "name": "Hardware Ecograph T",
                  "product_id": "CSAFPID-11002",
                  "product_identification_helper": {
                    "model_numbers": [
                      "RSG35"
                    ]
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Ecograph T Neutral/Private Label",
                "product": {
                  "name": "Hardware Ecograph T Neutral/Private Label",
                  "product_id": "CSAFPID-11001",
                  "product_identification_helper": {
                    "model_numbers": [
                      "ORSG35"
                    ]
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Hardware"
          }
        ],
        "category": "vendor",
        "name": "Endress+Hauser"
      }
    ],
    "product_groups": [
      {
        "group_id": "CSAFGID-0001",
        "product_ids": [
          "CSAFPID-31001",
          "CSAFPID-31002"
        ],
        "summary": "Affected products."
      }
    ],
    "relationships": [
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware V1.0.0 (07/2013)\u003cV2.0.0 (08/2015) installed on Hardware Ecograph T Neutral/Private Label",
          "product_id": "CSAFPID-31001"
        },
        "product_reference": "CSAFPID-21003",
        "relates_to_product_reference": "CSAFPID-11001"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware V1.0.0 (07/2013)\u003cV2.0.0 (08/2015) installed on Hardware Ecograph T",
          "product_id": "CSAFPID-31002"
        },
        "product_reference": "CSAFPID-21003",
        "relates_to_product_reference": "CSAFPID-11002"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2020-12495",
      "cwe": {
        "id": "CWE-269",
        "name": "Improper Privilege Management"
      },
      "notes": [
        {
          "category": "description",
          "text": "Endress+Hauser Ecograph T (Neutral/Private Label) (RSG35, ORSG35) with Firmware version prior to V2.0.0 is prone to improper privilege management. The affected device has a web-based user interface with a role-based access system. Users with different roles have different write and read privileges. The access system is based on dynamic \"tokens\". The vulnerability is that user sessions are not closed correctly and a user with fewer rights is assigned the higher rights when he logs on.",
          "title": "Description"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-31001",
          "CSAFPID-31002"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Customers should configure a perimeter firewall to block traffic from untrusted networks and users to the device. These recommendations will be incorporated into the device documentation (operating instructions).\n\nChange default password for operator, service and admin account.\n\nEndress+Hauser will not change this behavior.\nCustomers are recommended to take the measures for Temporary Fix / Mitigation as described above.",
          "group_ids": [
            "CSAFGID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 8.8,
            "environmentalSeverity": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 8.8,
            "temporalSeverity": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-31001",
            "CSAFPID-31002"
          ]
        }
      ],
      "title": "CVE-2020-12495"
    }
  ]
}


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