CVE-2009-4445

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2009-12-24T00:00:00.000Z", "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."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2017-08-16T14:57:01.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"name": "1023387", "tags": ["vdb-entry", "x_refsource_SECTRACK"], "url": "http://securitytracker.com/id?1023387"}, {"tags": ["x_refsource_MISC"], "url": "http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf"}, {"name": "ms-iis-colon-security-bypass(55308)", "tags": ["vdb-entry", "x_refsource_XF"], "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/55308"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2009-4445", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "1023387", "refsource": "SECTRACK", "url": "http://securitytracker.com/id?1023387"}, {"name": "http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf", "refsource": "MISC", "url": "http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf"}, {"name": "ms-iis-colon-security-bypass(55308)", "refsource": "XF", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/55308"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-07T07:01:20.343Z"}, "title": "CVE Program Container", "references": [{"name": "1023387", "tags": ["vdb-entry", "x_refsource_SECTRACK", "x_transferred"], "url": "http://securitytracker.com/id?1023387"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf"}, {"name": "ms-iis-colon-security-bypass(55308)", "tags": ["vdb-entry", "x_refsource_XF", "x_transferred"], "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/55308"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2009-4445", "datePublished": "2009-12-29T19:00:00.000Z", "dateReserved": "2009-12-29T00:00:00.000Z", "dateUpdated": "2024-08-07T07:01:20.343Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"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:a:microsoft:internet_information_services:*:*:*:*:*:*:*:*", "matchCriteriaId": "5CB4C943-1963-41A8-9D40-D79C0488219B", "versionEndIncluding": "6.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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."}], "id": "CVE-2009-4445", "lastModified": "2026-06-16T23:13:40.907", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 6.8, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": true, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2009-12-29T21:00:24.453", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://securitytracker.com/id?1023387"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf"}, {"source": "cve@mitre.org", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/55308"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://securitytracker.com/id?1023387"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/55308"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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