Barracuda SSL VPN 480 - Multiple Web Vulnerabilities

Document Title:
===============
Barracuda SSL VPN 480 - Multiple Web Vulnerabilities


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=35


Release Date:
=============
2012-01-11


Vulnerability Laboratory ID (VL-ID):
====================================
35


Product & Service Introduction:
===============================
The Barracuda SSL VPN is an integrated hardware and software solution enabling secure, clientless remote 
access to internal network resources from any Web browser. Designed for remote employees and road warriors, 
the Barracuda SSL VPN provides comprehensive control over file systems and Web-based applications requiring 
external access. The Barracuda SSL VPN integrates with third-party authentication mechanisms to control user 
access levels and provides single sign-on. 

Barracuda SSL VPN 	

    * Enables access to corporate intranets, file systems or other Web-based applications
    * Tracks resource access through auditing and reporting facilities
    * Scans uploaded files for viruses and malware
    * Leverages multi-factor, layered authentication mechanisms, including RSA SecurID and VASCO tokens
    * Integrates with existing Active Directory and LDAP directories
    * Utilizes policies for granular access control framework
    * Supports any Web browser on PC or Mac

(Copy of the Vendor Homepage: http://www.barracudanetworks.com/ns/products/sslvpn.php)


Abstract Advisory Information:
==============================
Vulnerability-lab Team discovered multiple persistent Web Vulnerabilities on the Barracudas  SSL VPN 480 appliance.



Vulnerability Disclosure Timeline:
==================================
2011-04-02:	Vendor Notification
2011-05-07:	Vendor Response/Feedback
2011-12-18:	Vendor Fix/Patch
2012-01-12:	Public or Non-Public Disclosure


Discovery Status:
=================
Published


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


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


Technical Details & Description:
================================
Multiple persistent Input Validation vulnerabilities are detected on Barracudas SSL VPN 480. Local low privileged user account can
implement/inject malicious persistent script code. When exploited by an authenticated user, the identified vulnerabilities 
can lead to information disclosure, access to intranet available servers, manipulated persistent content.

Vulnerable Module(s):	
						[+] Create Personal Network Place 
						[+] Network Places 6 Create Network Places
						[+] SSL Tunnels & My Favorites

Affected Product(s):
						[+] Barracuda SSL VPN 480 - Firmware v2.0.1.019 & older versions

Picture(s):
						../ive1.png
						../ive2.png


Proof of Concept (PoC):
=======================
The vulnerabilities can be exploited by local low privileged user accounts or remote attackers with via high user inter action. For demonstration or reproduce ...

1. Login
2. Open the vulnerable area were the persistent vulnerability is located
3. Include/Insert your own script code and save the content to inject
4. View the injected results which were stored on application-side. The code is getting executed in the listing output section


Solution - Fix & Patch:
=======================
2011-12-18:	Vendor Fix/Patch


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


Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri ([email protected])


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=========================
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