Re: Oracle URL SQL Injection issue

[Francois Larouche <francois.larouche-ml () sqlpowerinjector com>]

Hi,

In order to make your UNION works you need to have the exact number of 
expressions on the SELECT you inject. A start (*) character is not a 
good idea. So what I suggest is to try to add one at the time NULL or 
'1' after the SELECT and submit it until it doesn't complain about the 
incorrect number of columns.

An interesting outcome of your mistake is the presence of the dbs.inc 
file. I know it's not part of your question but I would suggest to try 
to find in which directory it is (perhaps directly where you are if you 
lucky) and request it. Usually a file with inc extension will be 
displayed as is with the source code. If it's the case you will see the 
exact SQL syntax inside and you will be able to craft your injection 
better, among other advantages...

Good luck

Francois
> Hey List
>
> I am pen testing a web app that supplies sql
> parameters on the URL something like
>
> http://x.y.z.a/item.php?Id=90
>
> I did blind sql injection by adding AND 1=1 to confirm
> the vulnerability.
>
> Now when I do
>
> http://x.y.z.a/item.php?Id=90'
>
> I get 
>
> ociparse() [function.ociparse]: OCIParse: ORA-01756:
> quoted string not properly terminated in item.php on
> line 312
>
> Then I tried (after confirming presence of usr table
> name)
>
> http://x.y.z.a/item.php?Id=90%20UNION%20SELECT%20*%20from%20usr;--
>
> and I get the error
>
> ociexecute() [function.ociexecute]: OCIStmtExecute:
> ORA-01789: query block has incorrect number of result
> columns in dbs.inc on line 44
>
> I know one valid user account in the oracle DB.
>
> Any idea what's the best strategy to move forward?
>
> I'm not getting any further from here so far.
>
> Any advise / helpo would be much appreciated.
>
> Cheers'
>
>
>
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