Barracuda CudaTel 2.6.02.04 Multiple Client Side Cross Site Vulnerabilities
CVE
Category
Price
Severity
CVE-2016-9409
CWE-79
N/A
High
Author
Risk
Exploitation Type
Date
Curesec GmbH
High
Remote
2013-07-18
CPE
cpe:cpe:/a:barracuda:cudatel:2.6.02.04
CVSS vector description
Metric
Value
Metric Description
Value Description
Attack vector Network AV The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230). Attack Complexity Low AC The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system. Privileges Required None PR The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack. Scope Unchanged S An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances. Confidentiality High C There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data. Integrity High I There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system. Availability High A There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.
Our sensors found this exploit at: http://cxsecurity.com/ascii/WLB-2013070137 Below is a copy: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 () vulnerability-lab com)
Disclaimer:
===========
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