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Groups > comp.lang.php > #3815
| From | Arno Welzel <usenet@arnowelzel.de> |
|---|---|
| Newsgroups | comp.lang.php |
| Subject | Re: i getting this warning |
| Date | 2011-11-17 15:15 +0100 |
| Organization | A noiseless patient Spider |
| Message-ID | <4EC516F2.9070703@arnowelzel.de> (permalink) |
| References | <616578.124.1321442274513.JavaMail.geo-discussion-forums@prmf13> <ja08dc$qc0$1@dont-email.me> <4ec3d299$0$28440$a8266bb1@newsreader.readnews.com> <4EC50CA0.9090009@arnowelzel.de> <ja344f$pcr$1@dont-email.me> |
Jerry Stuckle, 2011-11-17 15:01:
> On 11/17/2011 8:31 AM, Arno Welzel wrote:
>> Denis McMahon, 2011-11-16 16:11:
>>
>>> On Wed, 16 Nov 2011 06:56:21 -0500, Jerry Stuckle wrote:
>>>
>>>> On 11/16/2011 6:17 AM, sri kanth wrote:
>>>
>>>>> $qs=$_REQUEST['id'];
>>>>> $data=mysql_query("select * from tbl_porduct where pid=$qs");
>>>
>>>> Three things.
>>>
>>> You missed "using unescaped user input in a query with no validation or
>>> verification". I know it's only a select, but would you bet that he's
>>> that sloppy with selects and yet rigorous with data changing statements?
>>
>> It does not matter what statement there *is*. Using data from outside in
>> this way makes *everything* possible - this is the typical mistake which
>> makes SQL injection possible!
>>
>>
>> Example:
>>
>> Lets assume $qs is "1;drop tlb_product".
>>
>> $data = mysql_query("select * from tbl_product where pid=$qs");
>>
>> The statement will be expanded to:
>>
>> "select * from tbl_product where pid=1;drop tbl_product"
>>
>> The result will be, that the table tbl_product will be dropped, if the
>> MySQL user has the right to drop tables.
>>
>>
> <snip>
>
> The statement will fail because mysql_query() will not execute multiple
> statements in a single query.
Generally and in this specific case you are right - but it is possible
and you should never rely on this behaviour.
See also: <http://php.net/manual/de/function.mysql-query.php>
--
Arno Welzel
http://arnowelzel.de
http://de-rec-fahrrad.de
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i getting this warning sri kanth <sritullimilli@gmail.com> - 2011-11-16 03:17 -0800
Re: i getting this warning The Natural Philosopher <tnp@invalid.invalid> - 2011-11-16 11:26 +0000
Re: i getting this warning tony@mountifield.org (Tony Mountifield) - 2011-11-16 11:37 +0000
Re: i getting this warning Jerry Stuckle <jstucklex@attglobal.net> - 2011-11-16 06:56 -0500
Re: i getting this warning Denis McMahon <denismfmcmahon@gmail.com> - 2011-11-16 15:11 +0000
Re: i getting this warning Jerry Stuckle <jstucklex@attglobal.net> - 2011-11-16 10:41 -0500
Re: i getting this warning Arno Welzel <usenet@arnowelzel.de> - 2011-11-17 14:31 +0100
Re: i getting this warning Arno Welzel <usenet@arnowelzel.de> - 2011-11-17 14:34 +0100
Re: i getting this warning Denis McMahon <denismfmcmahon@gmail.com> - 2011-11-18 08:02 +0000
Re: i getting this warning The Natural Philosopher <tnp@invalid.invalid> - 2011-11-17 13:39 +0000
Re: i getting this warning Jerry Stuckle <jstucklex@attglobal.net> - 2011-11-17 09:01 -0500
Re: i getting this warning Arno Welzel <usenet@arnowelzel.de> - 2011-11-17 15:15 +0100
Re: i getting this warning Jerry Stuckle <jstucklex@attglobal.net> - 2011-11-17 09:44 -0500
Re: i getting this warning Arno Welzel <usenet@arnowelzel.de> - 2011-11-21 14:59 +0100
Re: i getting this warning Jerry Stuckle <jstucklex@attglobal.net> - 2011-11-21 09:12 -0500
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