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 (at) eazel (dot) es [email concealed] 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 (at) digitalarmaments (dot) com [email concealed] 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.

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