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www.waraxe.us Forum Index -> Sql injection -> Help with this injection
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Help with this injection
PostPosted: Mon Mar 02, 2009 12:56 am Reply with quote
delta
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Joined: Jan 11, 2009
Posts: 60




Hello again ppl =]

I'm trying a new injection and I think this won't be easy =[

Eg. of url:
Quote:
www.site.com/post.php?do=remove&p=[TOPIC ID]


Anything that i put after the topic id don't matter, the page loads ok.

The error comes when I put an invalid ID or nothing.


Quote:
SELECT * FROM post_blabla AS post_blabla INNER JOIN user AS user USING (userid) WHERE post_blabla.postid IN () ORDER BY post_blabla.username ASC;

MySQL Error : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') ORDER BY post_blabla.username ASC' at line 1


The error show where the injection part is. I tried some things, but without any success. Any ideia ?
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PostPosted: Fri Mar 06, 2009 3:17 pm Reply with quote
delta
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Joined: Jan 11, 2009
Posts: 60




Soo... No one? Confused Sad
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PostPosted: Fri Mar 06, 2009 3:40 pm Reply with quote
ingh1pped
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Joined: Dec 13, 2008
Posts: 88




try this

www.site.com/post.php?do=remove&p=[TOPIC ID] and (select 1)=1
or
www.site.com/post.php?do=remove&p=[TOPIC ID] order by 1/* // growing with number 2,3,4,5 etc..or -- comment

and check if the page is loaded normally.

but try to read also this paper... for other test.
http://www.milw0rm.com/papers/202
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PostPosted: Mon Mar 09, 2009 3:10 pm Reply with quote
delta
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Joined: Jan 11, 2009
Posts: 60




Nothing... Nothing happened =/
No error. The page always loads ok. Only get error when i put an invalid ID.
And this need to be blind, I'm just showing the query to be more easy to do it.
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PostPosted: Wed Mar 25, 2009 8:01 pm Reply with quote
delta
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Joined: Jan 11, 2009
Posts: 60




Sorry for recovering this topic. But still need help with that. Anyone knows if this injection is possible?
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PostPosted: Wed Mar 25, 2009 8:06 pm Reply with quote
waraxe
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Joined: May 11, 2004
Posts: 2407
Location: Estonia, Tartu




This is not sql injection, it's just lazy programmer, who did not care about error checks. If you provide invalid id, then first sql query returns null rows. Without checking results are used in second sql query and empty "IN ()" will induce sql error:
Code:

WHERE post_blabla.postid IN () ORDER BY


It's not exploitable ...
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PostPosted: Wed Mar 25, 2009 8:45 pm Reply with quote
delta
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Joined: Jan 11, 2009
Posts: 60




Hm... I imagined so... =)
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Help with this injection
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