[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: [ok] [Full-Disclosure] RE: Unchecked buffer in mstask.dll
- To: <bugtraq@xxxxxxxxxxxxxxxxx>, <full-disclosure@xxxxxxxxxxxxxxxx>, <tlarholm@xxxxxxxx>, <brett.moore@xxxxxxxxxxxxxxxxxxxxxxx>
- Subject: RE: [ok] [Full-Disclosure] RE: Unchecked buffer in mstask.dll
- From: "Curt Purdy" <purdy@xxxxxxxxxx>
- Date: Fri, 16 Jul 2004 14:29:27 -0500
Dmitry Yu wrote:
> > Being curious, on Win2k, I copied cmd.exe (from
> winnt\system32) as xyz.pif;
> > then (right-click) Properties, Program crashes explorer. Is
> this related to
> > IconHandler, and is it exploitable?
>
> Disassembly window shows that there was an attempt to read dword
> at [EAX] (EAX=0). So at first glance this doesn't seem to be
> trivially
> exploitable, but I'm not a win32 expert, and intuition
> suggests that there
> must be a way.
One possible exploit is to simply place the file on your desktop.
explorer.exe goes to 100% cpu.
Curt Purdy CISSP, GSEC, MCSE+I, CNE, CCDA
Information Security Engineer
DP Solutions
----------------------------------------
If you spend more on coffee than on IT security, you will be hacked.
What's more, you deserve to be hacked.
-- former White House cybersecurity adviser Richard Clarke
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.netsys.com/full-disclosure-charter.html