Digital Armaments Security Advisory 29.06.2006: Siemens Speedstream Wireless Router Password Protection Bypass Vulnerability

[info () digitalarmaments com]

Digital Armaments advisory is 05.02.2006
http://www.digitalarmaments.com/2006290674551938.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

Speedstream routers have UPnP/1.0 support. An attacker can access protected files and bypass the password protection 
without login using the UPnP part of the tree.


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 bypass the password protection. It also allow an attacker to access 
protected files without login.


V. Solution

First notification 05.02.2006.
Second notification 05.20.2006.
No answer from the vendor.


VI. Credit

Jaime Blasco - jaime.blasco () eazel es 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 
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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.