GEN:SID | 1:1044 |
Message | WEB-IIS webhits access |
Summary | This event is generated when an attempt is made to disclose the contents of a file on an Internet Information Server (IIS) host.
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Impact | Intelligence gathering activity. This attack can display the contents of an Activer Server Page (ASP) file or other files located on the server.
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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.
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Affected Systems | Hosts running Microsoft Index Server 2.0
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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.
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Ease of Attack | Simple.
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Corrective Action | Apply the patch discussed in the referenced Microsoft Bulletin. |
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
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Rule References | arachnids: 237
bugtraq: 950
cve: 2000-0097
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