{
  "id": "CVE-2009-4445",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2009-12-29T21:00:24.453",
  "lastModified": "2017-08-17T01:31:35.490",
  "vulnStatus": "Modified",
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft Internet Information Services (IIS), when used in conjunction with unspecified third-party upload applications, allows remote attackers to create empty files with arbitrary extensions via a filename containing an initial extension followed by a : (colon) and a safe extension, as demonstrated by an upload of a .asp:.jpg file that results in creation of an empty .asp file, related to support for the NTFS Alternate Data Streams (ADS) filename syntax.  NOTE: it could be argued that this is a vulnerability in the third-party product, not IIS, because the third-party product should be applying its extension restrictions to the portion of the filename before the colon."
    },
    {
      "lang": "es",
      "value": "Microsoft Internet Information Services (IIS), cuando es utilizado junto con aplicaciones de subida de archivos de terceras partes sin especificar, permite a atacantes remotos crear ficheros vac\u00edos con extensiones de su elecci\u00f3n a trav\u00e9s de un nombre de fichero que contiene una extensi\u00f3n inicial seguida por : (dos puntos) y una extensi\u00f3n segura; como se ha demostrado con la subida de un fichero .asp:.jpg que resulta en la creacci\u00f3n de un fichero vac\u00edo .asp. Relacionado con el soporte de la sintaxis de nombres de ficheros de NTFS Alternate Data Streams (ADS). NOTA: se podr\u00eda decir que es una vulnerabilidad del producto de terceras partes, no de IIS, porque el producto de terceras partes deber\u00eda imponer restricciones a las extensiones en la porci\u00f3n de nombre de fichero anterior a los dos puntos."
    }
  ],
  "metrics": {
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "SINGLE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.0
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 6.8,
        "impactScore": 6.4,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": true,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:microsoft:internet_information_services:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "6.0",
              "matchCriteriaId": "5CB4C943-1963-41A8-9D40-D79C0488219B"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "http://securitytracker.com/id?1023387",
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf",
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/55308",
      "source": "cve@mitre.org"
    }
  ]
}