OSEC

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Subject: Re: Enumerate Root Web Server Directory Vulnerability for IIS 4.0
From: Ollie Whitehouse (ollieDELPHISPLC.COM)
Date: Mon Mar 13 2000 - 08:30:57 CST

All,

A way to stop these types of attacks when enumeration of a file path on an
IIS box occurs is to replace the errors with non-default errors pages.

Rgds

Ollie
<%
Ollie Whitehouse
Delphis Consulting
VOX : +44 (0)207 916 0200 (Switchboard)
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Tag : Who needs Windows2000 when you have OS/2?
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-----Original Message-----
From: Jason Lutz [mailto:jasonSPIS.NET]
Sent: 09 March 2000 15:32
To: BUGTRAQSECURITYFOCUS.COM
Subject: Enumerate Root Web Server Directory Vulnerability for IIS 4.0

BugTraq,

   I was recently auditing the security on one of my web servers when I came
across a new Extension Enumerate Root Web Server Directory Vulnerability for
IIS 4.0. Going to the main website and asking for anything.idq I get the
page cannot be found. But if the files for the web server reside on a share
the full network path is found.

The Exploit:

On the shared network drive, http://server/anything.idq

The file \\share\wwwroot\inetpub\webpage\*.idq is on a network share. IDQ,
IDA and HTX files cannot be placed on a network share.

Tested on Windows NT 4.0 Service Pack 5 and 6a

I would like to say thank you to rain.forest.puppy. for all of his help.

props out to ADM, Wiretrip, w00w00 and l0pht.

Jason Lutz
Sprint Print Inc
jasonspis.net