Microsoft IIS 3.0/4.0,Microsoft Personal Web Server 2.0/3.0/4.0 ASP Alternate Data Streams Vulnerability. CVE-1999-0278. Remote exploits for multiple platform
source: http://www.securityfocus.com/bid/149/info Microsoft IIS and other NT webservers contain a vulnerability that allows remote users to obtain the source code for an ASP file. When one appends ::$DATA to an asp being requested, the ASP source will be returned, instead of executing the ASP. For example: http://xyz/myasp.asp::$DATA will return the source of myasp.asp, instead of executing it. The following proof of concept was provided: http://xyz/myasp.asp::$DATA This will cause IIS to disclose the contents of the page, myasp.asp, to an attacker.