{
  "id": "CVE-2019-9747",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2019-03-13T19:29:00.207",
  "lastModified": "2020-08-24T17:37:01.140",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "In tinysvcmdns through 2018-01-16, a maliciously crafted mDNS (Multicast DNS) packet triggers an infinite loop while parsing an mDNS query. When mDNS compressed labels point to each other, the function uncompress_nlabel goes into an infinite loop trying to analyze the packet with an mDNS query. As a result, the mDNS server hangs after receiving the malicious mDNS packet. NOTE: the product's web site states \"This project is un-maintained, and has been since 2013. ... There are known vulnerabilities ... You are advised to NOT use this library for any new projects / products.\""
    },
    {
      "lang": "es",
      "value": "En tinysvcmdns, hasta el 16/01/2018, un paquete mDNS (Multicast DNS) maliciosamente manipulado desencadena un bucle infinito al analizar una consulta mDNS. Cuando mDNS comprim\u00eda etiquetas que se se\u00f1alaban mutuamente, la funci\u00f3n uncompress_nlabel entrar\u00e1 en un bucle infinito, intentando analizar el paquete con una consulta mDNS. Como resultado, el servidor mDNS se cuelga tras recibir el paquete mDNS malicioso. NOTA: el sitio web del producto indica que \"el proyecto no se est\u00e1 manteniendo desde 2013. ... Hay vulnerabilidades conocidas ... Se recomienda NO emplear esta biblioteca para cualquier producto/proyecto nuevo\"."
    }
  ],
  "metrics": {
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      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.0",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
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          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:tinysvcmdns_project:tinysvcmdns:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "2018-01-16",
              "matchCriteriaId": "4CCD4237-B11D-455D-83C3-E4EAFA481ED7"
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  "references": [
    {
      "url": "https://bitbucket.org/geekman/tinysvcmdns/issues/11/denial-of-service-vulnerability-infinite",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    }
  ]
}