Tested on Win2k3 Standard, fully patched... Mshtml.dll 6.0.3790.2577 Iexplore.exe 6.0.3790.1830 PoC does work. David Schenz schenz.9@xxxxxxx -----Original Message----- From: Michal Zalewski [mailto:lcamtuf@xxxxxxxxxxxx] Sent: Thursday, March 16, 2006 4:14 PM To: Daniel Bonekeeper Cc: bugtraq@xxxxxxxxxxxxxxxxx; vulnwatch@xxxxxxxxxxxxx; full-disclosure@xxxxxxxxxxxxxxxxx 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
