bugtraq - Re: Adobe Flash Player plug-in null pointer dereference and browser crash

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Date: Wed, 11 Mar 2009 10:30:49 -0700
From: Matthew Dempsky <matthew@...himedia.com>
To: bugtraq@...urityfocus.com
Subject: Re: Adobe Flash Player plug-in null pointer dereference and browser 
	crash

On Wed, Oct 1, 2008 at 5:46 PM, Matthew Dempsky <matthew@...himedia.com> wrote:
> If a Flash 9 SWF loads two SWF files with different SWF version
> numbers from two distinct HTTP requests to the exact same URL
> (including query string arguments), then Adobe's Flash Player plug-in
> will try to dereference a null pointer.  This issue affects at least
> versions 9.0.45.0, 9.0.112.0, 9.0.124.0, and 10.0.12.10 on Windows, OS
> X, and Linux.

As an update, this issue also affects 10.0.22.87 at least on Windows
and OS X.  I've seen some Linux distributions (e.g., [1]) claim that
10.0.22.87 fixes this bug (aka CVE-2008-4546), but I think this is
mistaken.

You can easily reproduce this bug (i.e., crash your browser) by
visiting http://flashcrash.dempsky.org/.  Be sure to tell your
friends: it can be the next Rick Roll.

[1] http://www.gentoo.org/security/en/glsa/glsa-200903-23.xml?style=printable

-- 
Matthew Dempsky
http://www.mochimedia.com