[NT] Authentication Bypass in iisPROTECT
From: SecuriTeam (support_at_securiteam.com)
To: firstname.lastname@example.org Date: 26 May 2003 11:44:26 +0200
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Authentication Bypass in iisPROTECT
<http://www.iisprotect.com/> iisPROTECT is designed to provide password
protection to web directories similar to the htaccess method utilized by
the Apache Software Foundation's HTTP web server. A vulnerability in the
product allows bypassing the protection mechanism.
* iisPROTECT version 2.1 and 2.2
* iisPROTECT version 220.127.116.11
Upon successful installation and implementation of iisPROTECT, users will
be presented with a login and password dialog box when attempting to
access files contained in a protected directory.
Consider the following example:
An attacker can bypass this authentication by simply requesting the same
file through different URL-encoded representations. Examples of these
include but are not limited to:
12/31/2002 Issue disclosed to iDEFENSE
04/16/2003 E-mail sent to firstname.lastname@example.org
04/16/2003 Response received from David Fearn of iisPROTECT
04/16/2003 Patch provided to iDEFENSE for verification
05/22/2003 Coordinated public disclosure
The information has been provided by <mailto:email@example.com> iDEFENSE
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