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Digitalstrom Konfigurator 1.10.0 CSRF / Cross Site Scripting

Digitalstrom Konfigurator 1.10.0 CSRF / Cross Site Scripting
Posted Apr 22, 2016
Authored by W. Schober | Site sec-consult.com

Digitalstrom Konfigurator version 1.10.0 suffers from cross site request forgery and cross site scripting vulnerabilities.

tags | advisory, vulnerability, xss, csrf
SHA-256 | c1222ada6c904eee3c1aae5b05d9e712fcff0d0139e72dc176f4270549e20f32

Digitalstrom Konfigurator 1.10.0 CSRF / Cross Site Scripting

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SEC Consult Vulnerability Lab Security Advisory < publishing date 20160422-1 >
=======================================================================
title: Multiple vulnerabilities in Digitalstrom Konfigurator
product: Digitalstrom Konfigurator
vulnerable version: 1.10.0
fixed version: 1.10.4
CVE number: -
impact: High
homepage: http://www.digitalstrom.com/
found: 2015-10-01
by: W. Schober (Office Vienna)
SEC Consult Vulnerability Lab

An integrated part of SEC Consult
Berlin - Frankfurt/Main - Montreal - Singapore
Vienna (HQ) - Vilnius - Zurich

https://www.sec-consult.com

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

Vendor description:
-------------------
"Digitalstrom is designed to systematically network all the electrical devices
in your home. The control of light ambiances, security technology and
household devices is just the start. You can simply download these new
functions to your Digitalstrom server; they will install themselves
automatically. And tomorrow has already become today."

Source: http://www.digitalstrom.com/en/idea/Good-morning/


Business recommendation:
------------------------
SEC Consult recommends every user to sign out immediately after configuring
the Digitalstrom installation in the Digitalstrom Konfigurator. This should
prevent cross-site request forgery attacks. Furthermore every user should be
aware that an attack could occure everytime when he clicks on an unknown link.

However, SEC Consult recommends the vendor to conduct a comprehensive security
analysis, based on security source code reviews, in order to identify all
available vulnerabilities in the Digitalstrom Konfigurator and increase the
security of its customers.


Vulnerability overview/description:
-----------------------------------

1) Multiple Persistent Cross-Site Scripting
Digitalstrom Konfigurator suffers from multiple cross-site scripting
vulnerabilities, which allow stealing session tokens and impersonation of
other users in order to gain unauthorized access to the web interface.
Furthermore it is possible to alter the contents of the interface in the
context of the current user.


2) Cross-Site Request Forgery
Digitalstrom Konfigurator doesn't implement any kind of cross-site request
forgery protection. Due to that, attackers are able to execute arbitrary
requests with the privileges of any user. The only requirement is, that a
victim visits a malicious webpage. For example, an administrator can be
forced to execute unwanted actions. Some of these actions are:

-) Change network configuration
-) Enable SSH service
-) Turn various devices on and off


Proof of concept:
-----------------
Has been removed due to the request from the vendor.


Vulnerable / tested versions:
-----------------------------
Digitalstrom Konfigurator 1.10.0


Vendor contact timeline:
------------------------
2015-11-09: Transmission of advisory via email
2015-12-02: As requested by Digitalstrom: New PoC for XSS
2016-01-31: Vendor released updated version 1.10.4
2016-04-22: Public advisory release


Solution:
---------
Upgrade to version 1.10.4.
The effectiveness of the vendor's update was not verified by the SEC Consult
Vulnerability Lab.


Workaround:
-----------
no workaround available


Advisory URL:
-------------
https://www.sec-consult.com/en/Vulnerability-Lab/Advisories.htm


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

SEC Consult Vulnerability Lab

SEC Consult
Berlin - Frankfurt/Main - Montreal - Singapore - Vienna (HQ) - Vilnius - Zurich

About SEC Consult Vulnerability Lab
The SEC Consult Vulnerability Lab is an integrated part of SEC Consult. It
ensures the continued knowledge gain of SEC Consult in the field of network
and application security to stay ahead of the attacker. The SEC Consult
Vulnerability Lab supports high-quality penetration testing and the evaluation
of new offensive and defensive technologies for our customers. Hence our
customers obtain the most current information about vulnerabilities and valid
recommendation about the risk profile of new technologies.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Interested to work with the experts of SEC Consult?
Send us your application https://www.sec-consult.com/en/Career.htm

Interested in improving your cyber security with the experts of SEC Consult?
Contact our local offices https://www.sec-consult.com/en/About/Contact.htm
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Mail: research at sec-consult dot com
Web: https://www.sec-consult.com
Blog: http://blog.sec-consult.com
Twitter: https://twitter.com/sec_consult

EOF W. Schober / @2015

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