bugtraq - Re: Remote overflow in MSIE script action handlers (mshtml.dll)

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Message-ID: <BAY115-F1893A4E085D08C262AF86894E70@phx.gbl>
Date: Thu, 16 Mar 2006 22:05:34 +0000
From: "Master Phoxpherus" <phoxpherus@...mail.co.uk>
To: lcamtuf@...ne.ids.pl
Cc: bugtraq@...urityfocus.com
Subject: Re: Remote overflow in MSIE script action handlers (mshtml.dll)

Hmm. I'm running a Windows 98 SE box and just tried what you said. Didn't 
effect me "instantly" or after a time period. You sure you're not just 
seeing shit? :P

Plus, keeping it real, there's a fair difference between a BoF that you can 
perform easily remotely, and a BoF you have to talk people into. "Hey, 
dude... can you just type <command> and if it don't work, hit refresh a few 
times?" ... can you see it?

>On Thu, 16 Mar 2006, Daniel Bonekeeper wrote:
>
> > BTW, tested the POC on MSIE (File Version = 6.00.2900.2180
> > (xpsp_sp2_rtm.040803-2158)) with mshtml.dll (6.00.2900.2802
> > (xpsp_sp2_gdr.051123-1230)) and it didn't worked.
>
>Daniel followed up with me in private and confirmed that the PoC *did*
>work for him when he followed certain additional instructions: because the
>attack depends on memory layout and usage, to get consistent results, be
>sure to close *all* MSIE windows, then go to Start -> Run... and type:
>
>   iexplore http://lcamtuf.coredump.cx/iedie.html
>
>That should crash the browser immediately, because there are no other
>buffers nearby to "absorb" the initial fencepost. Still, if no dice, try
>hitting 'Reload' a couple of times.
>
>/mz

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