FKIE_CVE-2020-28952

Vulnerability from fkie_nvd - Published: 2021-03-09 20:15 - Updated: 2024-11-21 05:23
Summary
An issue was discovered on Athom Homey and Homey Pro devices before 5.0.0. ZigBee hub devices should generate a unique Standard Network Key that is then exchanged with all enrolled devices so that all inter-device communication is encrypted. However, the cited Athom products use another widely known key that is designed for testing purposes: "01030507090b0d0f00020406080a0c0d" (the decimal equivalent of 1 3 5 7 9 11 13 15 0 2 4 6 8 10 12 13), which is human generated and static across all issued devices.
Impacted products

{
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              "matchCriteriaId": "F91DB805-377E-44FE-8D5C-99E61F6493EF",
              "versionEndExcluding": "5.0.0",
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered on Athom Homey and Homey Pro devices before 5.0.0. ZigBee hub devices should generate a unique Standard Network Key that is then exchanged with all enrolled devices so that all inter-device communication is encrypted. However, the cited Athom products use another widely known key that is designed for testing purposes: \"01030507090b0d0f00020406080a0c0d\" (the decimal equivalent of 1 3 5 7 9 11 13 15 0 2 4 6 8 10 12 13), which is human generated and static across all issued devices."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 un problema en los dispositivos Athom Homey y Homey Pro anteriores a la 5.0.0.\u0026#xa0;Los dispositivos concentradores ZigBee deben generar una clave de red est\u00e1ndar \u00fanica que luego se intercambia con todos los dispositivos inscritos para que toda la comunicaci\u00f3n entre dispositivos est\u00e9 cifrada.\u0026#xa0;Sin embargo, los productos Athom citados usan otra clave ampliamente conocida que est\u00e1 dise\u00f1ada con fines de prueba: \"01030507090b0d0f00020406080a0c0d\" (el equivalente decimal de 1 3 5 7 9 11 13 15 0 2 4 6 8 10 12 13), que es generada por humanos y est\u00e1tica en todos los dispositivos emitidos"
    }
  ],
  "id": "CVE-2020-28952",
  "lastModified": "2024-11-21T05:23:22.197",
  "metrics": {
    "cvssMetricV2": [
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        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-03-09T20:15:12.680",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://developer.athom.com/firmware"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Product",
        "Vendor Advisory"
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      "url": "https://homey.app/en-us/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://yougottahackthat.com/blog/1260/athom-homey-security-static-and-well-known-keys-cve-2020-28952"
    },
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      "tags": [
        "Release Notes",
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://yougottahackthat.com/blog/1260/athom-homey-security-static-and-well-known-keys-cve-2020-28952"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-798"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

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