Rule: -- Sid: 1044 -- Summary: This event is generated when an attempt is made to disclose the contents of a file on an Internet Information Server (IIS) host. -- Impact: Intelligence gathering activity. This attack can display the contents of an Activer Server Page (ASP) file or other files located on the server. -- Detailed Information: A vulnerability exists in Windows NT 4.0 Option Pack and Windows 2000 Index Server. The Index Server is a search engine used by IIS that allows a user's browser to search for text in HTML and other documents. The Index Server has a Hit-Hightlighting component to highlight the text that satisifies the user's query. A vulnerability exists in the webhits.dll file used to process the search, allowing the disclosure of file contents. The .htw file extension is used by webhits.dll to perform hit-highlighting capabilities. -- Affected Systems: Hosts running Microsoft Index Server 2.0 -- Attack Scenarios: An attacker can attempt to disclose the contents of a file by crafting a special URL to access the Hit-Highlighting component of the Index Server. -- Ease of Attack: Simple. -- False Positives: None Known. -- False Negatives: None Known. -- Corrective Action: Apply the patch discussed in the referenced Microsoft Bulletin. -- Contributors: Original rule writer unknown Modified by Brian Caswell <bmc@sourcefire.com> Sourcefire Research Team Judy Novak <judy.novak@sourcefire.com> -- Additional References: Arachnids http://www.whitehats.com/info/IDS237 Bugtraq http://www.securityfocus.com/bid/1084 CVE http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2000-0302 Microsoft http://www.microsoft.com/technet/security/bulletin/ms00-006.asp --
