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Barracuda CudaTel 2.6.02.04 - Multiple Client Side Cross Site Vulnerabilities (Bug Bounty #17)
- To: bugtraq@xxxxxxxxxxxxxxxxx, bugs@xxxxxxxxxxxxxxxxxxx
- Subject: Barracuda CudaTel 2.6.02.04 - Multiple Client Side Cross Site Vulnerabilities (Bug Bounty #17)
- From: Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>
- Date: Wed, 17 Jul 2013 22:49:56 +0100
Title:
======
Barracuda CudaTel 2.6.02.04 - Multiple Client Side Cross Site Vulnerabilities
(Bug Bounty #17)
Date:
=====
2013-07-17
References:
===========
http://vulnerability-lab.com/get_content.php?id=779
BARRACUDA NETWORK SECURITY ID: BNSEC-815
VL-ID:
=====
779
Common Vulnerability Scoring System:
====================================
2.5
Introduction:
=============
Designed to enable seamless voice and video communication, the CudaTel
Communication Server is an easy-to-use,
affordable, next-generation phone system for businesses. CudaTel Communication
Server s enterprise-class
feature set includes Voice over IP (VoIP) PBX services, conferencing,
follow-me, automated attendant services,
and more, controlled by an easy-to-use Web interface. CudaTel Communication
Server is compatible with any SIP
device and provider, and can be pre-configured for use with both analog and
digital telephone networks. Powerful,
Complete Solution With an expansive feature set and and no per user or phone
licensing fees, the CudaTel
Communication Server is equipped and priced for organizations of any size.
Native High Definition audio support
and integrated phone line (TDM) hardware produces an unparalleled audio
experience. VOIP encryption protects calls
from hackers and digital eavesdroppers.
(Copy of the Vendor Homepage: http://www.cudatel.com )
Abstract:
=========
The Vulnerability Laboratory Research Team discovered multiple client side web
vulnerabilities in Barracuda Networks CudaTel v2.6.002.040 appliance
application.
Report-Timeline:
================
2012-11-26: Researcher Notification & Coordination (Benjamin Kunz Mejri)
2012-11-29: Vendor Notification (Barracuda Networks Security Team - Bug
Bounty Program)
2012-12-01: Vendor Response/Feedback (Barracuda Networks Security Team)
2013-04-07: Vendor Fix/Patch (Barracuda Networks Developer Team) [Manager:
Dave Farrow]
2012-07-17: Public Disclosure (Vulnerability Laboratory)
Status:
========
Published
Affected Products:
==================
Barracuda Networks
Product: CudaTel - Communication Server 2.6.002.040
Exploitation-Technique:
=======================
Remote
Severity:
=========
Medium
Details:
========
Multiple client side input validation vulnerabilities are detected in
Barracuda Networks CudaTel v2.6.002.040 appliance application.
The non-persistent vulnerabilities allows an attacker (remote) to manipulate
client side application to browser requests.
The first vulnerability (client side) is located in the gui route module when
processing to request the vulnerable
bbx_outbound_route_name parameter & affected listing. The route module allows
remote attackers via bbx_outbound_route_flag_locked
parameter to request and execute script codes in the bbx_outbound_route_name
listing.
The secound vulnerability (client side) is located in the ajax - html module
when processing to request the vulnerable
queues_wall_stub file and the ops opOpenQueueWallboard link parameters. The
vulnerability allows remote attackers (client side)
to change the link of the Queue Monitor Board on requests to redirect.
The third vulnerability (client side) is located in the Web login attempt fail
exception-handling of eventlog module when
processing to load the manipulated bbx_eventlog_message parameter. The
vulnerability allows remote attackers to execute own
script code (client side) in the queues_wall_stub.html file from the
exception-handling location for Web login attempt fails.
Exploitation of the vulnerability requires a low privilege application user
account and medium or high user interaction.
Successful exploitation of the vulnerabilities result in client side phishing,
client side session hijacking, client side
external redirects to malware or evil websites and client side module context
manipulation.
Vulnerable Section(s):
[+] GUI - ROUTE
[+] AJAX - HTML
[+] Eventlog
Vulnerable Module(s):
[+] route - Listing
[+] queues_wall_stub - Monitor Queue Link
[+] eventlog - Web login attempt fail
(Exception Handling) - Listing
Vulnerable Parameter(s):
[+] bbx_outbound_route_flag_locked >
bbx_outbound_route_name
[+] ops opOpenQueueWallboard
[+] bbx_eventlog_message
Proof of Concept:
=================
The client side input validation vulnerabilities can be exploited by remote
attackers without required application user account and with
medium or high required user interaction. For demonstration or reproduce ...
1.1
Review: GUI - ROUTE > route - Listing > bbx_outbound_route_flag_locked
[PARAMETER]> bbx_outbound_route_name [LISTING]
-
bbx_domain_id: 6
bbx_outbound_route_flag_locked: 0
bbx_outbound_route_id: 14
bbx_outbound_route_name: [CLIENT-SIDE SCRIPT CODE!]
bbx_outbound_route_regex: "^\\d{10}$"
bbx_outbound_route_type: national
</pre></body></html></iframe>​​​​​</pre>
PoC:
http://cudatel.127.0.0.1:1338/gui/route/route?%3C[CLIENT-SIDE SCRIPT
CODE!]%20%3C
http://cudatel.127.0.0.1:1338/gui/route/route?_=1354073910062&bbx_outbound_route_flag_locked=%3C[CLIENT-SIDE
SCRIPT CODE!]%20%3C
1.2
Review: AJAX - HTML > queues_wall_stub - Monitor Queue Link > ops
opOpenQueueWallboard
<h3>Queue Monitor <a class="ops opOpenQueueWallboard" href="#">Large View in
New Window</a></h3>
PoC:
http://cudatel.127.0.0.1:1338/ajax-html/queues_wall_stub.html?_=1354074247075%20%3C[CLIENT-SIDE
SCRIPT CODE!]%20%3C#
1.3
Review: Eventlog > eventlog - Web login attempt fail (Exception Handling) -
Listing > bbx_eventlog_message
-
bbx_eventlog_date_time: 2012-11-26 15:25:59
bbx_eventlog_email_sent: 0
bbx_eventlog_fullname: Admin
bbx_eventlog_id: 2823
bbx_eventlog_ip_addr: 178.200.236.201
bbx_eventlog_message: Web login attempt fail for
<[x]>%20%20split%20%20"><[CLIENT-SIDE SCRIPT CODE!]") < from 178.200.236.201
bbx_eventlog_priority: notice
bbx_eventlog_user_agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0)
Gecko/17.0 Firefox/17.0
bbx_user_id: 1
-
PoC:
http://cudatel.127.0.0.1:1338/gui/eventlog/eventlog?%3Cx%3E%20%20%20%20%22%3E%3C[CLIENT-SIDE
SCRIPT CODE!]%20%3C
Reference(s):
http://cudatel.ptest.cudasvc.com/gui/route/route
http://cudatel.ptest.cudasvc.com/ajax-html/queues_wall_stub.html
http://cudatel.ptest.cudasvc.com/gui/eventlog/eventlog
Risk:
=====
The security risk of the (multiple) client side input validation
vulnerabilities are estimated as medium.
Credits:
========
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri
(bkm@xxxxxxxxxxxxxxxxxxxxx)
Disclaimer:
===========
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