This is a patched version of YUI 2.9.0 uploader.swf as used by vBulletin 4.x for
managing multiple file uploads.

An exploit was found in the flash uploader (uploader.swf) file supplied with
vBulletin 4.x. This file is part of the Yahoo YUI 2 Library which is end of life
and Yahoo have stated that they will not be fixing it. Yahoo recommends that the
file is removed as the flash uploader has been deprecated.

http://yuilibrary.com/support/20131111-vulnerability/


vBulletin's recommended fix is to replace the file with an empty file of the same
name.

http://www.vbulletin.com/forum/forum/vbulletin-announcements/vbulletin-announcements_aa/4014388-yui-security-issue-found-in-uploader-swf

If you do this, however, and rely solely on the Ajax uploader you will not be
able to select multiple files without further modifications.

This modification is a recompiled version of uploader.swf with the above exploit
fixed. An additional potential exploit has also been fixed by disabling a parameter
not used by vBulletin.

The YUI source used is provided freely by Yahoo to whom I give full credit.


1) Installation

a) Extract uploader.swf from the .zip file and replace your existing file here:

<forum_root>/clientscript/yui/uploader/assets/uploader.swf

b) Make sure the flash uploader is enabled in the Admin Control Panel

Options -> Message Attachment Options -> Asset Manager - Enable -> Select "Yes, Flash Upload by Default"


2) Changes

11th January 2014
-----------------
The parameter 'allowedDomain' has been sanitised with a REGEX to prevent malicious javascript being passed in a query string.


11th January 2014 v2
--------------------
Many thanks to FranzBanz (http://www.vbulletin.com/forum/membe...-franzbanz)for his suggestions

1) finding another exploit (using another parameter). Exploit fixed by setting the parameter (not used by vBulletin) to null.
2) '-' Character added to allowed characters in allowedDomain





DISCLAIMER
----------
I am not a flash developer, I am just another vBulletin customer trying to keep his members happy!
This file is provided free of charge for the benefit of the vBulletin community. You use it at your own risk!

Any comments, concerns or probems I can be reached here: http://www.vbulletin.com/forum/member/41804-alexm




Copyright  2013 Yahoo! Inc. All rights reserved.

Redistribution and use of this software in source and binary forms, with or without modification, are permitted
provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

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in the documentation and/or other materials provided with the distribution.

Neither the name of Yahoo! Inc. nor the names of YUI's contributors may be used to endorse or promote products derived from
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