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
Low
C
There is some impact on confidentiality, but the attacker either does not gain control of any data, or the information obtained does not have a significant impact on the system or its operations.
Integrity
Low
I
Modification of data is possible, but the attacker does not have control over what can be modified, or the extent of what the attacker can affect is limited. The data modified does not have a direct, serious impact on the system.
Availability
None
A
There is no impact on the availability of the system; the attacker does not have the ability to disrupt access to or use of the system.
Title:
======
Barracuda Spam/Virus WAF 600 - Multiple Web Vulnerabilities
Date:
=====
2012-01-19
References:
===========
http://www.vulnerability-lab.com/get_content.php?id=28
VL-ID:
=====
28
Introduction:
=============
Barracuda Networks - Worldwide leader in email and Web security.
The Barracuda Spam & Virus Firewall is an integrated hardware and software solution for complete protection of
your email server. It provides a powerful, easy-to-use and affordable solution to eliminating spam and viruses
from your organization by providing the following protection:
Barracuda Spam & Virus Firewall
* Anti-spam
* Anti-virus
* Anti-spoofing
* Anti-phishing
* Anti-spyware (Attachments)
* Denial of Service
The Barracuda Spam & Virus Firewall is compatible with all email servers and can fit into nearly any corporate or
small business environment. It is used by small organizations with as few as 10 employees and large organizations
with as many as 200,000 employees. A single Barracuda Spam & Virus Firewall handles up to 100,000 active email
users. Multiple units can be clustered together for even greater capacity and high availability.
The Barracuda Spam & Virus Firewall protects your email server with twelve defense layers:
* Network Denial of Service Protection
* Rate Control
* IP Reputation Analysis
* Sender Authentication
* Recipient Verification
* Virus Scanning
...
(Copy of the Vendor Homepage: http://www.barracudanetworks.com/ns/products/spam_overview.php)
Abstract:
=========
Vulnerability Lab Team discovered multiple persistent Web Vulnerabilities on Barracudas Spam & Virus Firewall 600 appliance application.
Report-Timeline:
================
2011-04-01:Vendor Notification
2011-08-04:Vendor Response/Feedback
2011-12-22:Vendor Fix/Patch by Check
2012-01-19:Public or Non-Public Disclosure
Status:
========
Published
Exploitation-Technique:
=======================
Remote
Severity:
=========
Medium
Details:
========
Multiple persistent Input Validation vulnerabilities are detected on Barracudas Spam & Virus Web Firewall 600. 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):
[+] Trace route Device - Troubleshooting
[+] LDAP Configuration - LDAP Username
Affected Version(s):
[+] Barracuda Spam & Virus Firewall 600
Affected Firmware(s):
[+] Firmware v4.0.1.009 & older versions
Picture(s):
../ldap.png
Proof of Concept:
=================
The persistent vulnerabilities can be exploited by local low privileged user accounts with low required user inter action or
by remote attackers with high required user inter action.
Manually Steps ...
1. Login to the Barracuda Application
2. Open the vulnerable area were the persistent vulnerability is located
3. Include/Insert your own script code or poc and save/execute the content to inject
4. View the injected results which were stored on application side. The code is getting executed in the output section
PoC:
%3E%3E%22%3C%69%66%72%61%6D%65%20%73%72%63%3D%68%74%74%70%3A%2F%2F%77%77%77%2
E%76%75%6C%6E%65%72%61%62%69%6C%69%74%79%2D%6C%61%62%2E%63%6F%6D%20%77%69%64%
74%68%3D%36%30%30%20%68%65%69%67%68%74%3D%36%30%30%3E
Solution:
=========
2011-12-22:Vendor Fix/Patch
Risk:
=====
The security risk of the persistent vulnerabilities are estimated as medium(+).
Credits:
========
Vulnerability Research Laboratory - Benjamin Kunz Mejri (Rem0ve)
Disclaimer:
===========
The information provided in this advisory is provided as it is without any warranty. Vulnerability-Lab disclaims all warranties,
either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-
Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business
profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some
states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation
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Lab. Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of
other media, are reserved by Vulnerability-Lab or its suppliers.
Copyright 2012|Vulnerability-Lab
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