Virtual Freer v1.57 - Authentication Bypass Vulnerability

Document Title:
===============
Virtual Freer v1.57 - Authentication Bypass Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1592


Release Date:
=============
2015-09-04


Vulnerability Laboratory ID (VL-ID):
====================================
1592


Common Vulnerability Scoring System:
====================================
8.9


Product & Service Introduction:
===============================
Charge cards and virtual goods sales script!

(Copy of the Vendor Homepage: http://freer.ir/virtual/  )


Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered an authentication bypass vulnerability in the official Virtual Freer v1.57 web-application.


Vulnerability Disclosure Timeline:
==================================
2015-09-04:	Public Disclosure (Vulnerability Laboratory)


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


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


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


Technical Details & Description:
================================
An auth bypass session vulnerability has been discovered in the official in the official Virtual Freer v1.57 content management system.
The session vulnerability allows remote attackers to unauthorized access the administrator panel or the web user interface.

The vulnerability is located in the session credentials request of the login.php file. Remote attackers are able to use a 1=1 sql payload 
to bypass the login.php script validation. Thus results in unauthorized access to the administrator panel. The issue is a classic auth bypass 
and is remot exploitable. The request method to inject is POST and the attack vector is located on the application-side of the online-service.

The security risk of the auth bypass vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 8.9. 
Exploitation of the auth bypass session web vulnerability requires no privilege application user account or user interaction. 
Successful exploitation of the vulnerability results in unauthorized access to the admin panel, defacement, web-application and dbms compromise.

Request Method(s):
			[+] GET

Vulnerable Module(s)
			[+] Login (Session)

Vulnerable File(s):
			[+] login.php

Affected Module(s)
			[+] Account System - (./back)


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

Manual steps to reproduce the vulnerability ...
1 . Open the vulnerable web-app
2 . Start to browse the website and go to http://localhost:8080/back/login.php
3 . Enter Username: \
4 . Enter Password:  or 1=1 -- /*
5 . Now you will login with the credentials
6 . Successful reproduce of the auth bypass login vulnerability!


PoC: login.php
Enter Username:  \
Enter Password:   or 1=1 -- /*

Reference(s):
http://localhost:8080/virtual/demo/back/login.php


Security Risk:
==============
The security risk of the remote auth bypass web vulnerability in the login.php file is estimated as high. (CVSS 8.9)


Credits & Authors:
==================
Mohammad Reza Espargham ([email protected]) - [https://twitter.com/rezesp] [www.reza.es]


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