{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2009-4444",
        "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) 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."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "37460",
                "refsource": "BID",
                "url": "http://www.securityfocus.com/bid/37460"
            },
            {
                "name": "1023387",
                "refsource": "SECTRACK",
                "url": "http://securitytracker.com/id?1023387"
            },
            {
                "name": "http://blogs.technet.com/msrc/archive/2009/12/27/new-reports-of-a-vulnerability-in-iis.aspx",
                "refsource": "MISC",
                "url": "http://blogs.technet.com/msrc/archive/2009/12/27/new-reports-of-a-vulnerability-in-iis.aspx"
            },
            {
                "name": "37831",
                "refsource": "SECUNIA",
                "url": "http://secunia.com/advisories/37831"
            },
            {
                "name": "http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf",
                "refsource": "MISC",
                "url": "http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf"
            },
            {
                "name": "ADV-2009-3634",
                "refsource": "VUPEN",
                "url": "http://www.vupen.com/english/advisories/2009/3634"
            }
        ]
    }
}