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Date: Fri, 17 Mar 2006 09:05:09 -0000 From: <c0redump@...ers.org.uk> To: <bugtraq@...urityfocus.com> Subject: Re: Remote overflow in MSIE script action handlers (mshtml.dll) Worked like a treat first time on IE 6.0.2900.2180.xpsp_sp2_gdr.050301-1519 and exited with error: "Unhandled exception at 0x7d56a08d in iexplore.exe: 0xC0000005: Access violation writing location 0x037c7eb8." c0redump ----- Original Message ----- From: Michal Zalewski To: Daniel Bonekeeper Cc: bugtraq@...urityfocus.com ; vulnwatch@...nwatch.org ; full-disclosure@...ts.grok.org.uk Sent: Thursday, March 16, 2006 9:13 PM Subject: Re: Remote overflow in MSIE script action handlers (mshtml.dll) 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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