vde-2021-057

{
  "document": {
    "acknowledgments": [
      {
        "organization": "CERTVDE",
        "summary": "coordination",
        "urls": [
          "https://certvde.com"
        ]
      },
      {
        "names": [
          "Noam Moshe"
        ],
        "organization": "Claroty",
        "summary": "reporting",
        "urls": [
          "https://claroty.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": "Multiple Vulnerabilities in a software service of shDIALUP can lead to arbitrary code execution due to improper privilege management.\n\nUpdate A, 2022-03-28\n\nUpdated CVSS score from CVE-2021-33527 from 7.8 to 9.8 due to new information about the vulnerability",
        "title": "Summary"
      },
      {
        "category": "description",
        "text": "Please consult the CVE entries.",
        "title": "Impact"
      },
      {
        "category": "description",
        "text": "Update shDialup to 3.9R0.5",
        "title": "Remediation"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "psirt@helmholz.de",
      "name": "Helmholz GmbH & Co. KG",
      "namespace": "https://www.helmholz.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "VDE-2021-057: Helmholz: Privilege Escalation in shDialup (Update A) - HTML",
        "url": "https://certvde.com/de/advisories/VDE-2021-057/"
      },
      {
        "category": "external",
        "summary": "CERT@VDE Security Advisories for Helmholz GmbH & Co. KG",
        "url": "https://certvde.com/en/advisories/vendor/helmholz/"
      },
      {
        "category": "self",
        "summary": "VDE-2021-057: Helmholz: Privilege Escalation in shDialup (Update A) - CSAF",
        "url": "https://helmholz.csaf-tp.certvde.com/.well-known/csaf/white/2021/vde-2021-057.json"
      }
    ],
    "title": "Helmholz: Privilege Escalation in shDialup (Update A)",
    "tracking": {
      "aliases": [
        "VDE-2021-057"
      ],
      "current_release_date": "2025-05-14T13:00:15.000Z",
      "generator": {
        "date": "2025-03-05T11:11:28.586Z",
        "engine": {
          "name": "Secvisogram",
          "version": "2.5.20"
        }
      },
      "id": "VDE-2021-057",
      "initial_release_date": "2021-03-28T13:03:00.000Z",
      "revision_history": [
        {
          "date": "2021-03-28T13:03:00.000Z",
          "number": "1",
          "summary": "initial revision"
        },
        {
          "date": "2025-05-14T13:00:15.000Z",
          "number": "2",
          "summary": "Fix: added distribution"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "shDialup",
                "product": {
                  "name": "shDialup",
                  "product_id": "CSAFPID-11001"
                }
              }
            ],
            "category": "product_family",
            "name": "Hardware"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "<=3.9R0.0",
                "product": {
                  "name": "Firmware <=3.9R0.0",
                  "product_id": "CSAFPID-21001"
                }
              },
              {
                "category": "product_version",
                "name": "3.9R0.5",
                "product": {
                  "name": "Firmware 3.9R0.5",
                  "product_id": "CSAFPID-22001"
                }
              }
            ],
            "category": "product_family",
            "name": "Firmware"
          }
        ],
        "category": "vendor",
        "name": "Helmholz GmbH & Co. KG"
      }
    ],
    "relationships": [
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware <=3.9R0.0 installed on shDialup",
          "product_id": "CSAFPID-31001"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11001"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware 3.9R0.5 installed on shDialup",
          "product_id": "CSAFPID-32001"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11001"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-33527",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "notes": [
        {
          "category": "summary",
          "text": "In MB connect line mbDIALUP versions <= 3.9R0.0 a remote attacker can send a specifically crafted HTTP request to the service running with NT AUTHORITY\\SYSTEM that will not correctly validate the input. This can lead to an arbitrary code execution with the privileges of the service."
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-32001"
        ],
        "known_affected": [
          "CSAFPID-31001"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update shDialup to 3.9R0.5",
          "product_ids": [
            "CSAFPID-21001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 9.8,
            "environmentalSeverity": "CRITICAL",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 9.8,
            "temporalSeverity": "CRITICAL",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-31001"
          ]
        }
      ],
      "title": "CVE-2021-33527"
    },
    {
      "cve": "CVE-2021-33526",
      "cwe": {
        "id": "CWE-269",
        "name": "Improper Privilege Management"
      },
      "notes": [
        {
          "category": "summary",
          "text": "In MB connect line mbDIALUP versions <= 3.9R0.0 a low privileged local attacker can send a command to the service running with NT AUTHORITY\\SYSTEM instructing it to execute a malicous OpenVPN configuration resulting in arbitrary code execution with the privileges of the service."
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-32001"
        ],
        "known_affected": [
          "CSAFPID-31001"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update shDialup to 3.9R0.5",
          "product_ids": [
            "CSAFPID-21001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 7.8,
            "environmentalSeverity": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 7.8,
            "temporalSeverity": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-31001"
          ]
        }
      ],
      "title": "CVE-2021-33526"
    }
  ]
}