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Message-ID: <BC3B7C5C1CE51F4093A17834685D3AC10F45C1@shrek.webcohort.com>
Date: Mon, 1 Sep 2003 20:48:39 +0200
From: "WebCohort Research" <research@...cohort.com>
To: <bugtraq@...urityfocus.com>
Subject: Whitepaper - Blindfolded SQL Injection


WebCohort Presents "Blindfolded SQL Injection" - a white paper
describing how SQL Injection can be performed without deatiled error
messages:

Description:
-----------
Until today, exploiting SQL Injection attacks depended on having the Web
Server return detailed error messages or having any other source of
information. As a result, many security administrators supressed these
error messages, assuming this would protect them from SQL Injection
exploitation. This white paper shows, however, that supressing the error
messages does not provide real protection. The research done at
WebCohort reveales a set of techniques that can be easily used by
attackers in order to bypass this obstacle, making it clear that more
substantial measures must be taken against SQL Injection attacks. 

Authors:
-------
Ofer Maor, Senior Security Consultant, WebCohort Technologies.
Amichai Shulman, CTO, WebCohort Technologies.

Download:
--------
The whitepaper can be obtained at
http://www.webcohort.com/Blindfolded_SQL_Injection.pdf

Table of Contents:
-----------------
Overview  3
Identifying Injections  5
   Recognizing Errors  5
   Locating Errors  6
   Identifying SQL Injection Vulnerable Parameters  6
Performing the Injection  8
   Getting the Syntax Right  8
   Identifying the Database  9
   Exploiting the Injection  10
UNION SELECT Injections  11
   Counting the Columns  11
   Identifying Columns Types  13
Summary  15


---
WebCohort Technologies
http://www.webcohort.com/
U.S. Toll Free: 1-866-592-1289


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