full-disclosure - Firespoofing [Firefox 1.0]

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Message-ID: <FBF77CAA2771D31188580008C79182F213CBD072@usphlx16.phl.sap.corp>
From: craig.soderland at sap.com (Soderland, Craig)
Subject: Firespoofing [Firefox 1.0]

This does not work if you are using the FireFox 1.0 tabbed browsing
feature, as your pop up window simply opens a new tab, and it then
becomes immediately obvious what you are trying to pull off here. 



> -----Original Message-----
> From: full-disclosure-bounces@...ts.netsys.com
[mailto:full-disclosure-
> bounces@...ts.netsys.com]
> Sent: Monday, January 10, 2005 6:22 PM
> To: full-disclosure@...ts.netsys.com; bugtraq@...urityfocus.com;
> NTBUGTRAQ@...tserv.ntbugtraq.com
> Subject: [Full-Disclosure] Firespoofing [Firefox 1.0]
> 
> __Summary
> 
> Using javascript it is possible to spoof the content of security and
> download dialogs by partly covering them with a popup window. This can
> fool
> a user to download and automaticly execute a file (if a file extension
> association exists) or to grant a script local data access (if
codebase
> principals are enabled).
> 
> __Expected Behavior
> 
> Modal dialogs should always be on top and it should not be possible to
> obfuscate their appearance.
> 
> __Proof-of-Concept
> 
> http://www.mikx.de/firespoofing/
> 
> The PoC is designed for Firefox 1.0 running in a maximized window.
> 
> Part 1 - download dialog spoofing
> Shows how to cover a download dialog and fool the user to execute a
file
> with a standard windows file association (in this case a .ht file).
BTW,
> remember the latest .ht buffer overflow...
> 
> Part 2 - security dialog spoofing
> Shows how to cover a security dialog. Make sure codebase principals
are
> enabled (not default but encouraged by many XUL sites). Creates the
file
> c:\booom.txt to proof local system access.
> 
> __Status
> 
> The bug is confirmed but currently unfixed (open for more than 3
months).
> As
> a partial workaround set dom.disable_window_flip to true in
about:config.
> The vendor failed to respond to multiple status requests which led to
this
> public disclosure.
> 
> 2004-09-20 Vendor informed (bugzilla.mozilla.org #260560)
> 2004-09-20 Vendor confirmed bug
> 2004-10-20 Status request (open for 1 month - no reply)
> 2005-01-03 Status request (open for 3 months - no reply)
> 2005-01-07 Status request (disclosure warning - no reply)
> 2005-01-11 Public disclosure
> 
> __Affected Software
> 
> Tested with Firefox 1.0, Mozilla 1.7.5 and Netscape 7.1 on Windows XP
SP2.
> 
> __Contact Informations
> 
> Michael Krax <mikx@...x.de>
> http://www.mikx.de/?p=7
> 
> mikx
> 
> 
> _______________________________________________
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> Charter: http://lists.netsys.com/full-disclosure-charter.html