SQL injection vulnerability in index.php in TurnkeyWebTools SunShop Shopping Cart 4.0 allows remote attackers to execute arbitrary SQL commands via the (1) c or (2) quantity parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/34138
http://www.securityfocus.com/archive/1/477829/100/200/threaded
http://www.securityfocus.com/archive/1/467825/100/0/threaded