Nusiorung CMS 2016 - (Login) Auth Bypass Vulnerability

[Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>]

Document Title:
===============
Nusiorung CMS 2016 - (Login) Auth Bypass Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1875


Release Date:
=============
2016-07-13


Vulnerability Laboratory ID (VL-ID):
====================================
1875


Common Vulnerability Scoring System:
====================================
7.6


Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered a login auth 
bypass web vulnerability in the official Nusiorung CMS 2016.


Vulnerability Disclosure Timeline:
==================================
2016-07-13:     Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Exploitation Technique:
=======================
Remote


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


Technical Details & Description:
================================
An auth bypass web vulnerability has been discovered in the official Nusiorung 
content management system 2016.
The vulnerability allows remote attackers to bypass the authentication 
mechanism of the web-application to compromise.

The vulnerability is located in the username and password input fields of the 
admin login module. Remote attackers 
are able to perform malicious POST method requests to unauthorized login to the 
administrator panel. The vulnerability 
is a classic login auth bypass issue. The attack vector is located to the 
application-side and the request method to 
inject is POST.

The security risk of the auth bypass web vulnerability is estimated as high 
with a cvss (common vulnerability scoring system) count of 7.6.
Exploitation of the remote auth bypass web vulnerability requires no user 
interaction or privileged web-application user account.
Successful exploitation of the remote vulnerability results in database 
management system, account system or web-application compromise.

Request Method(s):
                                [+] POST

Vulnerable Module(s):
                                [+] Login

Vulnerable Parameter(s):
                                [+] Gebruikersnaam(username) and 
Wachtwoord(Password)


Proof of Concept (PoC):
=======================
The auth bypass web vulnerability can be exploited by remote attackers without 
user interaction or privileged user account.
For security demonstration or to reproduce the vulnerability follow the 
provided information and steps below to continue.

Google Dork(s): intext:"Powered By nusiorung"

PoC: Exploitation
Username: '=' 'OR'
Password: '=' 'OR'

PoC: URL
http://localhost:8000/[PATH]/admin/index.php


Security Risk:
==============
The security risk of the auth bypass web vulnerability in the web-application 
login module is estimated as high. (CVSS 7.6)


Credits & Authors:
==================
mr_mask_black - [http://www.vulnerability-lab.com/show.php?user=mr_mask_black]


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