CVE-2009-4445

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.

🔗 References (6)

• cve@mitrehttp://securitytracker.com/id?1023387
• cve@mitrehttp://soroush.secproject.com/downloadable/iis-semicolon-report.pdf
• cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/55308
• af854a3a-2127-422b-91ae-364da2661108http://securitytracker.com/id?1023387
• af854a3a-2127-422b-91ae-364da2661108http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf
• af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/55308