{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:shenzhen_dragon_brothers:fb50_firmware:2.3:*:*:*:*:*:*:*",
              "matchCriteriaId": "F86EC9A3-303A-46B6-9F56-B90615C2579C",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:shenzhen_dragon_brothers:fb50:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "7EA162C8-6383-47CC-9418-1D0852F7362F",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An HTTP parameter pollution issue was discovered on Shenzhen Dragon Brothers Fingerprint Bluetooth Round Padlock FB50 2.3. With the user ID, user name, and the lock\u0027s MAC address, anyone can unbind the existing owner of the lock, and bind themselves instead. This leads to complete takeover of the lock. The user ID, name, and MAC address are trivially obtained from APIs found within the Android or iOS application. With only the MAC address of the lock, any attacker can transfer ownership of the lock from the current user, over to the attacker\u0027s account. Thus rendering the lock completely inaccessible to the current user."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 un problema de contaminaci\u00f3n de par\u00e1metros HTTP en Brothers Fingerprint Bluetooth Round Padlock FB50 de Shenzhen versi\u00f3n 2.3. Con el ID de usuario, el nombre de usuario y la direcci\u00f3n MAC del candado, cualquiera puede desvincular al propietario existente del candado y, en su lugar, vincularse. Esto conlleva a la toma de control completa del candado. La identificaci\u00f3n de usuario, el nombre y la direcci\u00f3n MAC se obtienen trivialmente de las API que se encuentran dentro de la aplicaci\u00f3n de Android o iOS. Con solo la direcci\u00f3n MAC del candado, cualquier atacante puede transferir la propiedad del candado del usuario actual a la cuenta del atacante. De este modo, el usuario actual no puede acceder al candado."
    }
  ],
  "id": "CVE-2019-13143",
  "lastModified": "2026-06-17T02:16:09.423",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 9.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 8.5,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2019-08-06T18:15:11.267",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "http://blog.securelayer7.net/fb50-smart-lock-vulnerability-disclosure/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "http://blog.securelayer7.net/fb50-smart-lock-vulnerability-disclosure/"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}