Hi buawig.
As UNION ALL SELECT is usable only when joining two datasets (like in FULL
inband/union injection) with the latest commit (r4776), UNION SELECT is
used automatically in partial inband/union injection (solving your problem
and maybe some other related) (e.g. id=-1 UNION SELECT ....) as there is no
need for UNION ALL SELECT there (first dataset is dropped by that negative
and/or random value).
Kind regards,
Miroslav Stampar
p.s. more info about the difference between the two:
http://blog.sqlauthority.com/2007/03/10/sql-server-union-vs-union-all-which-is-better-for-performance/
On Tue, Feb 21, 2012 at 9:12 PM, <bua...@gmail.com> wrote:
> Hi,
>
> recently I had a union based sqli vulnerability that sqlmap was not able
> to detect (I'm not sure if I used --level=4 but I think so).
>
> After having a look at sqlmap's requests by routing them through a proxy
> I saw that the only difference between my manual tests and sqlmap's was
> that sqlmap used "union all select" and I used "union select"
> and it was only detectable/exploitable using "union select".
>
> My quick and dirty 'fix' was to do a automatic on-the-fly search and
> replace of sqlmap's traffic with burp (replacing "union all select" with
> "union select"), but I wanted to share this case with you and I thought
> you might want to add some "union select" testcases if there are none.
> (I'm sorry I don't remember the DBMS in question - it probably was mssql
> but I'm not sure anymore.)
>
> kind regards,
> buawig
>
>
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--
Miroslav Stampar
http://about.me/stamparm
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