VDE-2024-031

Vulnerability from csaf_helmholzgmbhcokg - Published: 2025-03-18 11:00 - Updated: 2025-05-14 13:00
Summary
Helmholz: Vulnerabilities in myREX24 V2/myREX24.virtual
Notes
Summary: The data24 service that is bundled with every installation of myREX24 V2/myREX24.virtual has two serious flaws in core components. These combined can lead to a complete loss of confidentiality, integrity and availability.
Impact: CVE-2024-23943: A total loss of confidentiality and integrity, for individual devices or the whole service, is possible. CVE-2024-23942: An attacker in possession of the device's configuration file can impersonate the real device. This also allows to prevent the real device from connecting successful.
Mitigation: CVE-2024-23942: If the device's serial number is known to myREX24 V2/myREX24.virtual before the downloadable configuration is created, that configuration will be encrypted allowing only the correct device to decrypt it.
Remediation: Update to latest version: 2.16.2 CVE-2024-23943: This fix does not apply to REX 200/REX 250 devices with firmware 8.0.0 - 8.1.3. If you are using a device with this firmware, please update it to >= 8.2.0.
General Recommendation: Always use the latest available firmware version on all devices.
CVE-2024-23943

An unauthenticated remote attacker can gain access to the cloud API due to a lack of authentication for a critical function in the affected devices. A DoS is not possible.

9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE-306 - Missing Authentication for Critical Function
Vendor Fix Update to latest version: 2.16.2 CVE-2024-23943: This fix does not apply to REX 200/REX 250 devices with firmware 8.0.0 - 8.1.3. If you are using a device with this firmware, please update it to >= 8.2.0.
CVE-2024-23942

A local user may find a configuration file on the client workstation with unencrypted sensitive data. This allows an attacker to impersonate the device or prevent the device from accessing the cloud portal.

5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE-311 - Missing Encryption of Sensitive Data
Mitigation CVE-2024-23942: If the device's serial number is known to myREX24 V2/myREX24.virtual before the downloadable configuration is created, that configuration will be encrypted allowing only the correct device to decrypt it.
References
Acknowledgments
CERT@VDE certvde.com
MB Connect Line GmbH mbconnectline.com/
To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "organization": "CERT@VDE",
        "summary": "coordination",
        "urls": [
          "https://certvde.com"
        ]
      },
      {
        "organization": "MB Connect Line GmbH",
        "summary": "reporting",
        "urls": [
          "https://mbconnectline.com/"
        ]
      }
    ],
    "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 data24 service that is bundled with every installation of myREX24 V2/myREX24.virtual has two\nserious flaws in core components. These combined can lead to a complete loss of confidentiality, integrity\nand availability.",
        "title": "Summary"
      },
      {
        "category": "description",
        "text": "CVE-2024-23943: A total loss of confidentiality and integrity, for individual devices or the whole service, is\npossible.\n\nCVE-2024-23942: An attacker in possession of the device\u0027s configuration file can impersonate the real\ndevice. This also allows to prevent the real device from connecting successful.",
        "title": "Impact"
      },
      {
        "category": "description",
        "text": "CVE-2024-23942: If the device\u0027s serial number is known to myREX24 V2/myREX24.virtual before the\ndownloadable configuration is created, that configuration will be encrypted allowing only the correct device to\ndecrypt it.",
        "title": "Mitigation"
      },
      {
        "category": "description",
        "text": "Update to latest version: 2.16.2\n\nCVE-2024-23943: This fix does not apply to REX 200/REX 250 devices with firmware 8.0.0 - 8.1.3. If you are using a device with this firmware, please update it to \u003e= 8.2.0.",
        "title": "Remediation"
      },
      {
        "category": "general",
        "text": "Always use the latest available firmware version on all devices.",
        "title": "General Recommendation"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "psirt@helmholz.de",
      "name": "Helmholz GmbH \u0026 Co. KG",
      "namespace": "https://www.helmholz.de"
    },
    "references": [
      {
        "category": "external",
        "summary": "Helmholz GmbH \u0026 Co. KG Advisories",
        "url": "https://www.helmholz.de/en/service-support/service/security-psirt/"
      },
      {
        "category": "external",
        "summary": "CERT@VDE Security Advisories for Helmholz GmbH \u0026 Co. KG",
        "url": "https://certvde.com/en/advisories/vendor/helmholz"
      },
      {
        "category": "self",
        "summary": "VDE-2024-031: Helmholz: Vulnerabilities in myREX24 V2/myREX24.virtual - HTML",
        "url": "https://certvde.com/en/advisories/VDE-2024-031"
      },
      {
        "category": "self",
        "summary": "VDE-2024-031: Helmholz: Vulnerabilities in myREX24 V2/myREX24.virtual - CSAF",
        "url": "https://helmholz.csaf-tp.certvde.com/.well-known/csaf/white/2025/vde-2024-031.json"
      }
    ],
    "title": "Helmholz: Vulnerabilities in myREX24 V2/myREX24.virtual",
    "tracking": {
      "aliases": [
        "VDE-2024-031"
      ],
      "current_release_date": "2025-05-14T13:00:14.000Z",
      "generator": {
        "date": "2025-03-18T13:56:49.218Z",
        "engine": {
          "name": "Secvisogram",
          "version": "2.5.18"
        }
      },
      "id": "VDE-2024-031",
      "initial_release_date": "2025-03-18T11:00:00.000Z",
      "revision_history": [
        {
          "date": "2025-03-18T11:00:00.000Z",
          "number": "1",
          "summary": "Initial revision."
        },
        {
          "date": "2025-03-18T14:00:00.000Z",
          "number": "2",
          "summary": "Update: Changed Product name"
        },
        {
          "date": "2025-04-10T13:00:00.000Z",
          "number": "3",
          "summary": "Update: fixed CSAF-Reference URL, changed url in credits, removed whitespace after version operator"
        },
        {
          "date": "2025-05-14T13:00:14.000Z",
          "number": "4",
          "summary": "Fix: added distribution"
        }
      ],
      "status": "final",
      "version": "4"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "branches": [
                  {
                    "category": "product_name",
                    "name": "myREX24 V2",
                    "product": {
                      "name": "myREX24 V2",
                      "product_id": "CSAFPID-11001"
                    }
                  },
                  {
                    "category": "product_name",
                    "name": "myREX24.virtual",
                    "product": {
                      "name": "myREX24.virtual",
                      "product_id": "CSAFPID-11002"
                    }
                  }
                ],
                "category": "product_family",
                "name": "myREX24"
              },
              {
                "branches": [
                  {
                    "category": "product_name",
                    "name": "REX 200",
                    "product": {
                      "name": "REX 200",
                      "product_id": "CSAFPID-11003"
                    }
                  },
                  {
                    "category": "product_name",
                    "name": "REX 250",
                    "product": {
                      "name": "REX 250",
                      "product_id": "CSAFPID-11004"
                    }
                  }
                ],
                "category": "product_family",
                "name": "REX"
              }
            ],
            "category": "product_family",
            "name": "Hardware"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "2.16.2",
                "product": {
                  "name": "Firmware 2.16.2",
                  "product_id": "CSAFPID-22001"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c2.16.2",
                "product": {
                  "name": "Firmware \u003c2.16.2",
                  "product_id": "CSAFPID-21001"
                }
              },
              {
                "category": "product_version",
                "name": "8.2.0",
                "product": {
                  "name": "Firmware 8.2.0",
                  "product_id": "CSAFPID-22003"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c8.2.0",
                "product": {
                  "name": "Firmware \u003c8.2.0",
                  "product_id": "CSAFPID-22004"
                }
              }
            ],
            "category": "product_family",
            "name": "Firmware"
          }
        ],
        "category": "vendor",
        "name": "Helmholz GmbH \u0026 Co. KG"
      }
    ],
    "product_groups": [
      {
        "group_id": "CSAFGID-0001",
        "product_ids": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31003",
          "CSAFPID-31004"
        ],
        "summary": "Affected products."
      },
      {
        "group_id": "CSAFGID-0002",
        "product_ids": [
          "CSAFPID-32001",
          "CSAFPID-32002",
          "CSAFPID-32003",
          "CSAFPID-32004"
        ],
        "summary": "Fixed products."
      }
    ],
    "relationships": [
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c2.16.2 installed on myREX24 V2",
          "product_id": "CSAFPID-31001"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11001"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c2.16.2 installed on myREX24.virtual",
          "product_id": "CSAFPID-31002"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11002"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware 2.16.2 installed on myREX24 V2",
          "product_id": "CSAFPID-32001"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11001"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware 2.16.2 installed on myREX24.virtual",
          "product_id": "CSAFPID-32002"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11002"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware 8.2.0 installed on REX 200",
          "product_id": "CSAFPID-32003"
        },
        "product_reference": "CSAFPID-11003",
        "relates_to_product_reference": "CSAFPID-22003"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware 8.2.0 installed on REX 250",
          "product_id": "CSAFPID-32004"
        },
        "product_reference": "CSAFPID-11004",
        "relates_to_product_reference": "CSAFPID-22003"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c8.2.0 installed on REX 200",
          "product_id": "CSAFPID-31003"
        },
        "product_reference": "CSAFPID-11003",
        "relates_to_product_reference": "CSAFPID-22004"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c8.2.0 installed on REX 250",
          "product_id": "CSAFPID-31004"
        },
        "product_reference": "CSAFPID-11004",
        "relates_to_product_reference": "CSAFPID-22004"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2024-23943",
      "cwe": {
        "id": "CWE-306",
        "name": "Missing Authentication for Critical Function"
      },
      "notes": [
        {
          "audience": "all",
          "category": "description",
          "text": "An unauthenticated remote attacker can gain access to the cloud API due to a lack of authentication for a critical function in the affected devices. A DoS is not possible.",
          "title": "Vulnerability Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-32001",
          "CSAFPID-32002",
          "CSAFPID-32003",
          "CSAFPID-32004"
        ],
        "known_affected": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31003",
          "CSAFPID-31004"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to latest version: 2.16.2\n\nCVE-2024-23943: This fix does not apply to REX 200/REX 250 devices with firmware 8.0.0 - 8.1.3. If you are using a device with this firmware, please update it to \u003e= 8.2.0.",
          "group_ids": [
            "CSAFGID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 9.1,
            "environmentalSeverity": "CRITICAL",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 9.1,
            "temporalSeverity": "CRITICAL",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-31001",
            "CSAFPID-31002",
            "CSAFPID-31003",
            "CSAFPID-31004"
          ]
        }
      ],
      "title": "CVE-2024-23943"
    },
    {
      "cve": "CVE-2024-23942",
      "cwe": {
        "id": "CWE-311",
        "name": "Missing Encryption of Sensitive Data"
      },
      "notes": [
        {
          "audience": "all",
          "category": "description",
          "text": "A local user may find a configuration file on the client workstation with unencrypted sensitive data. This allows an attacker to impersonate the device or prevent the device from accessing the cloud portal.",
          "title": "Vulnerability Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-32001",
          "CSAFPID-32002"
        ],
        "known_affected": [
          "CSAFPID-31001",
          "CSAFPID-31002"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "CVE-2024-23942: If the device\u0027s serial number is known to myREX24 V2/myREX24.virtual before the\ndownloadable configuration is created, that configuration will be encrypted allowing only the correct device to\ndecrypt it.",
          "group_ids": [
            "CSAFGID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 5.5,
            "environmentalSeverity": "MEDIUM",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 5.5,
            "temporalSeverity": "MEDIUM",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-31001",
            "CSAFPID-31002"
          ]
        }
      ],
      "title": "CVE-2024-23942"
    }
  ]
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.