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INSTEON Hub 2242-222 Lack Of Authentication

INSTEON Hub 2242-222 Lack Of Authentication
Posted Aug 2, 2013
Authored by David Bryan | Site trustwave.com

INSTEON Hub version 2242-222, a home automation controller for INSTEON and X10 compatible devices, fails to authenticate access to various APIs.

tags | exploit
advisories | CVE-2013-4859
SHA-256 | 344b9d157fcf088c208cd232978729ba893b86e4c1f8d79ddb434b8c739b31b1

INSTEON Hub 2242-222 Lack Of Authentication

Change Mirror Download
Trustwave SpiderLabs Security Advisory TWSL2013-023:
Lack of Web and API Authentication Vulnerability in INSTEON Hub

Published: 8/01/13
Version: 1.0

Vendor: INSTEON (http://www.INSTEON.com/)
Product: Hub

Version affected: 2242-222 (model discontinued)

Product description:
Home automation controller for INSTEON and X10 compatible devices such as,
lights, RF deadbolts/door locks, Window/door sensors, thermostats, etc.

Finding 1: Lack of Web and API Authentication
*****Credit: David Bryan of Trustwave SpiderLabs
CVE: CVE-2013-4859
CWE: CWE-306

The INSTEON Hub allows users to control their home automation devices from
their home, and across the Internet. To allow control of the devices from
the Internet requires that a user create a port forward from the Internet
to the Hub on their home network. This is to allow direct access from a
users smart phone. The hub will display a web page that is a legacy of their
previous hardware version of home automation control systems. This page
allows anonymous access to control any devices connected to the Hub, if the
user has not set a user name and password. Additionally it reveals the
name of the device, and what city and timezone the device is located.

Because INSTEON does not restrict the user in the naming of their device,
it is possible for users to use their street address in the naming. Having
access to the name of the city, make locating the device trivial using
mapping software to search for the house and street name of the controller,
and potentially identify the location of the device. The web interface
does not require the user to set authentication or authorization to make
requests to the Hub. This allows an anonymous threat agent access to turn
on and off lights/devices, change temperature settings on thermostats, or
even open electronic door locks. Additionally a threat agent also has
access to a buffer command, where they can see what lights or devices were
turned on or off. For example, an ON Command is a simple GET request of:


http://A.B.C.D:8001/3?0262XXYYZZ0F11FF=I=3

This turns on the device, and does not require authentication to perform
this action. XXYYZZ is the ID of the INSTEON device.

An OFF Command is a simple GET request of:
http://A.B.C.D:8001/3?0262XXYYZZ0F1100=I=3

This turns the device off, and does not require authentication to perform
this action.

http://A.B.C.D:8001/buffstatus.xml request, without any sort of authentication taking place:

<response><BS>02622026AA0F11FF0602502026AA1E965F2F11FF000000000000000000000000000000000000000000000000000000000000</BS></response>

>From that response,it is possible to gather what INSTEON devices that were last used.
>From there an attacker can then go back and easily decode the buffer status
message and turn those devices on or off.

Additionally, the device does not have the capability to enable SSL/TLS to
encrypt the data in transit. This allows any anonymous threat agent to
view, intercept, and replay commands. It also does not prevent someone
from capturing authentication credentials when the device is accessed via
the Internet.


Remediation Steps:
The vendor has recalled and discontinued affected units. Trustwave
SpiderLabs has confirmed that Model 2422-222R is not affected by this
vulnerability.

Vendor Communication Timeline:
12/27/12 - Vulnerability disclosed to vendor
03/16/13 - Vendor emails upgrade notice
07/17/13 - Advisory disclosed to vendor
08/01/13 - Advisory published

References
1. http://www.INSTEON.com/support.html

About Trustwave:
Trustwave is the leading provider of on-demand and subscription-based
information security and payment card industry compliance management
solutions to businesses and government entities throughout the world. For
organizations faced with today's challenging data security and compliance
environment, Trustwave provides a unique approach with comprehensive
solutions that include its flagship TrustKeeper compliance management
software and other proprietary security solutions. Trustwave has helped
thousands of organizations--ranging from Fortune 500 businesses and large
financial institutions to small and medium-sized retailers--manage
compliance and secure their network infrastructure, data communications and
critical information assets. Trustwave is headquartered in Chicago with
offices throughout North America, South America, Europe, Africa, China and
Australia. For more information, visit https://www.trustwave.com

About Trustwave SpiderLabs:
SpiderLabs(R) is the advanced security team at Trustwave focused on
application security, incident response, penetration testing, physical
security and security research. The team has performed over a thousand
incident investigations, thousands of penetration tests and hundreds of
application security tests globally. In addition, the SpiderLabs Research
team provides intelligence through bleeding-edge research and proof of
concept tool development to enhance Trustwave's products and services.
https://www.trustwave.com/spiderlabs

Disclaimer:
The information provided in this advisory is provided "as is" without
warranty of any kind. Trustwave disclaims all warranties, either express or
implied, including the warranties of merchantability and fitness for a
particular purpose. In no event shall Trustwave or its suppliers be liable
for any damages whatsoever including direct, indirect, incidental,
consequential, loss of business profits or special damages, even if
Trustwave 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 may not
apply.

________________________________

This transmission may contain information that is privileged, confidential, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format.


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