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Digital Armaments Security Advisory 24.07.2006: Siemens Speedstream Wireless/Router Denial of Service Vulnerability



Digital Armaments advisory is 05.4.2006
http://www.digitalarmaments.com/2006310665340982.html

I. Background

The SpeedStream Wireless DSL/Cable Router is usually adopted for home and small 
business solutions. Together with an existing DSL or cable modem connection, 
this affordable, easy to use connection sharing solution brings the freedom of 
high-speed, wireless broadband connectivity to home and SOHO networks. Its 
comprehensive functionality provides vital firewall protection, IP sharing 
capabilities, and fundamental routing features that support popular protocols 
like NetMeeting and VPN.
For further information or detail about the software you can refer to the 
vendor's homepage:

http://subscriber.communications.siemens.com/


II. Problem Description

It is possible with a specially crafted packet sent to the Web Server that 
permit Administration of the Router to freeze it.


III. Detection

This problem has been detected on latest version of Siemens Speedstrem Router. 
It has been tested on the Speedstream 2624.


IV. Impact analysis

Successful exploitation allow an attacker to freeze the router. Reboot is 
necessary.


V. Solution

First notification 05.04.2006.
Second notification 05.24.2006.
No answer from the vendor.


VI. Credit

Jaime Blasco - jaime.blasco@xxxxxxxx is credited with this discovery.

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VII. Legal Notices

Copyright © 2006 Digital Armaments LLC.

Redistribution of this alert electronically is allowed. It should not be edited 
in any way. Reprint the whole is allowed, partial reprint is not permitted. For 
any other request please email customerservice@xxxxxxxxxxxxxxxxxxxx for 
permission.

Disclaimer: The information in the advisory is believed to be accurate at the 
time of publishing based on currently available information. Use of the 
information constitutes acceptance for use in an AS IS condition. There are no 
warranties with regard to this information. Neither the author nor the 
publisher accepts any liability for any direct, indirect, or consequential loss 
or damage arising from use of, or reliance on, this information.