From: WebCohort Research (research@webcohort.com)
Date: Mon Sep 01 2003 - 14:51:41 EDT
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
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