{
  "id": "CVE-2018-16657",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2018-09-07T14:29:03.397",
  "lastModified": "2020-08-24T17:37:01.140",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "In Kamailio before 5.0.7 and 5.1.x before 5.1.4, a crafted SIP message with an invalid Via header causes a segmentation fault and crashes Kamailio. The reason is missing input validation in the crcitt_string_array core function for calculating a CRC hash for To tags. (An additional error is present in the check_via_address core function: this function also misses input validation.) This could result in denial of service and potentially the execution of arbitrary code."
    },
    {
      "lang": "es",
      "value": "En Kamailio, en versiones anteriores a la 5.0.7 y versiones 5.1.x anteriores a la 5.1.4, un mensaje SIP manipulado con una cabecera Via inv\u00e1lida provoca un fallo de segmentaci\u00f3n y el cierre inesperado de Kamailio. La raz\u00f3n es la falta de validaci\u00f3n de entradas en la funci\u00f3n core crcitt_string_array para calcular un hash CRC para las etiquetas To. (Existe un error adicional en la funci\u00f3n core check_via_address: esta funci\u00f3n tambi\u00e9n carece de validaci\u00f3n de entradas). Esto podr\u00eda resultar en una denegaci\u00f3n de servicio (DoS) y, potencialmente, la ejecuci\u00f3n de c\u00f3digo arbitrario."
    }
  ],
  "metrics": {
    "cvssMetricV30": [
      {
        "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:H/I:H/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5
        },
        "baseSeverity": "HIGH",
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"
            },
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          "operator": "OR",
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          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:kamailio:kamailio:*:*:*:*:*:*:*:*",
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  "references": [
    {
      "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00013.html",
      "source": "cve@mitre.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://skalatan.de/blog/advisory-hw-2018-06",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Patch",
        "Third Party Advisory"
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    },
    {
      "url": "https://www.debian.org/security/2018/dsa-4292",
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}