Re: Fwd: mysql selecting into outfile in an insert

[Ulisses Castro <uss.thebug () gmail com>]

MySQL doesn't support stacked querys, unfortunately you can't stack
querys like postgresql, mssql, ...

On Tue, Jul 20, 2010 at 7:09 PM, Michael McGrew
<mmcgrew1 () mail csuchico edu> wrote:
> If you can inject SQL could you end the query with ; then start a new
> select query where you use INTO OUTFILE?
>
> This is why it's not working:
> "An INTO clause should not be used in a nested SELECT because such a
> SELECT must return its result to the outer context. "
> http://dev.mysql.com/doc/refman/5.0/en/select.html
>
>
>
> On Tue, Jul 20, 2010 at 2:23 PM, Robin Wood <robin () digininja org> wrote:
> > I sent this to the webappsec mailing list but thought I'd send it here
> > as well looking for some SQL Injection experts.
> >
> >
> > ---------- Forwarded message ----------
> >
> > I've got a vulnerable web app with a MySQL backend where I can inject
> > into an INSERT query and I want to create a file. With a SELECT I
> > would use a UNION and then SELECT whatever INTO OUTFILE "filename" but
> > how do you do it with an INSERT query?
> >
> > I tried:
> >
> > INSERT INTO size VALUES (22, (SELECT "abc" INTO OUTFILE "/tmp/test")) ;
> >
> > That executes and size gets a new row with 22 and "abc" in it but it
> > doesn't create the file.
> >
> > I also tried an UPDATE and had the same problem:
> >
> > UPDATE size SET big=22 WHERE big =  (SELECT "abc" INTO OUTFILE "/tmp/test");
> >
> > The update happens where big="abc" but no outfile.
> >
> > Can it be done?
> >
> > Robin
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