PHP Security - Avoid SQL Injection

Question

PHP Security - Avoid SQL Injection

Asked 7 years, 8 months ago

Viewed 331 times

1

It’s wrong or unsafe to use:

if ($_SERVER['REQUEST_METHOD'] === 'POST') {

        foreach ($_POST as $key => $value) $$key = $value;
   ...
}

Let’s say I have this code, but use a Procedure call with prepare on variables. I run some risk of attack by Sql Injection?

Being a little more specific, my problem is in:

foreach ($_POST as $key => $value) $$key = $value;

I have an analysis and security report on my system saying that this is a serious flaw of SQL Injection. Even if I’m using PDO and prepare after that!

Hello @Renan the answers on this link are good. But I already run these practices and msm so my system is seen as veranenenenevel just by this snippet of code shown above!

– alan

2017/04/12 at 14:13
2

Use filter_input and be happy!

– Maurivan

2017/04/12 at 14:20
If you have a specific problem, you should post it in detail to anyone who can help you. So generic has already been answered.

– Maniero

2017/04/12 at 14:43
1

Use PDO and Prepared statements, and be happy (2)

– Rodrigo Jarouche

2017/04/16 at 03:06
1

@Rodrigosartorijarouche unfortunately this is not enough. Because already use PDO and Prepared and thought that would be enough to be 100% safe. But find q there are more things to worry about!

– alan

2017/04/17 at 14:03
@Alan uses The Prepared statements + filter_input

– Rodrigo Jarouche

2017/04/22 at 04:24
uses filter_input together, you’re right I also thought enough and is not...

– Rodrigo Jarouche

2018/08/11 at 20:03

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by Gustavo Castro • **599** points · Answer 1 · 2017-04-12T14:19:23+00:00

Yes, your method is susceptible to sql Injection.

First I would like to do php in brute force to go to a framework like Zend Framework or the simplest ones like Codeigniter this way you care more about what your code should do than how security should be done. Well if you want to do everything for the native I’d go with the method filter_input (INPUT_POST , sua_variable) which is much safer than $_post['variable'] or that your method after all it already checks if it exists and makes some filters for you as well as it is possible to add options making it useful, for more information look at the website of php or the link exemplifying how to use it.