Reporter Benjamin Kunz Mejri
Barracuda SSL VPN 480 - Multiple Web Vulnerabilities
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)
Vulnerability-lab Team discovered multiple persistent Web Vulnerabilities on the Barracudas SSL VPN 480 appliance.
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
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.
[+] Create Personal Network Place
[+] Network Places 6 Create Network Places
[+] SSL Tunnels & My Favorites
[+] Barracuda SSL VPN 480 - Firmware v2.0.1.019 & older versions
Proof of Concept:
The vulnerabilities can be exploited by local low privileged user accounts or remote attackers with via high user inter action. For demonstration or reproduce ...
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
2011-12-18: Vendor Fix/Patch
The security risk of the persistent vulnerabilities are estimated as medium(+).
Vulnerability Research Laboratory - Benjamin Kunz Mejri (Rem0ve)
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