Vulnerability-Lookup

FKIE_CVE-2009-4444

Vulnerability from fkie_nvd - Published: 2009-12-29 21:00 - Updated: 2026-06-16 23:13

Severity

Summary

Microsoft Internet Information Services (IIS) 5.x and 6.x uses only the portion of a filename before a ; (semicolon) character to determine the file extension, which allows remote attackers to bypass intended extension restrictions of third-party upload applications via a filename with a (1) .asp, (2) .cer, or (3) .asa first extension, followed by a semicolon and a safe extension, as demonstrated by the use of asp.dll to handle a .asp;.jpg file.

References

URL	Tags
cve@mitre.org	http://blogs.technet.com/msrc/archive/2009/12/27/new-reports-of-a-vulnerability-in-iis.aspx	Broken Link
cve@mitre.org	http://secunia.com/advisories/37831	Third Party Advisory
cve@mitre.org	http://securitytracker.com/id?1023387	Third Party Advisory, VDB Entry
cve@mitre.org	http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf	Third Party Advisory
cve@mitre.org	http://www.securityfocus.com/bid/37460	Third Party Advisory, VDB Entry
cve@mitre.org	http://www.vupen.com/english/advisories/2009/3634	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://blogs.technet.com/msrc/archive/2009/12/27/new-reports-of-a-vulnerability-in-iis.aspx	Broken Link
af854a3a-2127-422b-91ae-364da2661108	http://secunia.com/advisories/37831	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://securitytracker.com/id?1023387	Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108	http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.securityfocus.com/bid/37460	Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108	http://www.vupen.com/english/advisories/2009/3634	Third Party Advisory

Impacted products

	Vendor	Product	Version
	microsoft	internet_information_services	5.0
	microsoft	internet_information_services	6.0

JSON

To clipboard

{
  "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:5.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "413C07EA-139F-4B7D-A58B-835BD2591FA0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:microsoft:internet_information_services:6.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "9B4DF95D-B4B1-4FB6-9D27-A6D359EEACFA",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft Internet Information Services (IIS) 5.x and 6.x uses only the portion of a filename before a ; (semicolon) character to determine the file extension, which allows remote attackers to bypass intended extension restrictions of third-party upload applications via a filename with a (1) .asp, (2) .cer, or (3) .asa first extension, followed by a semicolon and a safe extension, as demonstrated by the use of asp.dll to handle a .asp;.jpg file."
    },
    {
      "lang": "es",
      "value": "Microsoft Internet Information Services (IIS) 5.x y 6.x usa s\u00f3lo la porci\u00f3n de un nombre de fichero antes de un caracter ; (punto y coma) para determinar la extensi\u00f3n del fichero, lo que permite a atacantes remotos eludir las restricciones de extensi\u00f3n previstas para aplicaciones de subida de ficheros de terceros mediante un nombre de fichero con una primera extensi\u00f3n (1) .asp, (2) .cer o (3) .asa seguida de un punto y coma y una extensi\u00f3n segura, tal y como se ha quedado demostrado al usar asp.dll para manejar un fichero .asp;.jpg."
    }
  ],
  "id": "CVE-2009-4444",
  "lastModified": "2026-06-16T23:13:40.793",
  "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": "2009-12-29T21:00:24.327",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Broken Link"
      ],
      "url": "http://blogs.technet.com/msrc/archive/2009/12/27/new-reports-of-a-vulnerability-in-iis.aspx"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://secunia.com/advisories/37831"
    },
    {
      "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",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/37460"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://www.vupen.com/english/advisories/2009/3634"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link"
      ],
      "url": "http://blogs.technet.com/msrc/archive/2009/12/27/new-reports-of-a-vulnerability-in-iis.aspx"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://secunia.com/advisories/37831"
    },
    {
      "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",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/37460"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://www.vupen.com/english/advisories/2009/3634"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2009-4444 (GCVE-0-2009-4444)

Vulnerability from cvelistv5 – Published: 2009-12-29 19:00 – Updated: 2024-09-16 18:12

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

6 references

URL	Tags
http://www.securityfocus.com/bid/37460	vdb-entryx_refsource_BID
http://securitytracker.com/id?1023387	vdb-entryx_refsource_SECTRACK
http://blogs.technet.com/msrc/archive/2009/12/27/…	x_refsource_MISC
http://secunia.com/advisories/37831	third-party-advisoryx_refsource_SECUNIA
http://soroush.secproject.com/downloadable/iis-se…	x_refsource_MISC
http://www.vupen.com/english/advisories/2009/3634	vdb-entryx_refsource_VUPEN

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-07T07:01:20.317Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
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              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/37460"
          },
          {
            "name": "1023387",
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              "vdb-entry",
              "x_refsource_SECTRACK",
              "x_transferred"
            ],
            "url": "http://securitytracker.com/id?1023387"
          },
          {
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              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://blogs.technet.com/msrc/archive/2009/12/27/new-reports-of-a-vulnerability-in-iis.aspx"
          },
          {
            "name": "37831",
            "tags": [
              "third-party-advisory",
              "x_refsource_SECUNIA",
              "x_transferred"
            ],
            "url": "http://secunia.com/advisories/37831"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf"
          },
          {
            "name": "ADV-2009-3634",
            "tags": [
              "vdb-entry",
              "x_refsource_VUPEN",
              "x_transferred"
            ],
            "url": "http://www.vupen.com/english/advisories/2009/3634"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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      "descriptions": [
        {
          "lang": "en",
          "value": "Microsoft Internet Information Services (IIS) 5.x and 6.x uses only the portion of a filename before a ; (semicolon) character to determine the file extension, which allows remote attackers to bypass intended extension restrictions of third-party upload applications via a filename with a (1) .asp, (2) .cer, or (3) .asa first extension, followed by a semicolon and a safe extension, as demonstrated by the use of asp.dll to handle a .asp;.jpg file."
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      "references": [
        {
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        },
        {
          "name": "1023387",
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        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
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                      }
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                "vendor_name": "n/a"
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  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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FKIE_CVE-2009-4444

CVE-2009-4444 (GCVE-0-2009-4444)

Tags

Sightings

Nomenclature

Related by attack behaviour