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Re: Exploit for MS06-040 Out?
From: H D Moore <fdlist () digitaloffense net>
Date: Fri, 11 Aug 2006 10:09:01 -0500
The DLLs for XP SP2 and 2003 SP1 were compiled with Visual Studio's stack
protection flag (/GS). This prevents a standard return address overwrite
from working. The wcscpy() method everyone is using in their exploits is
also blocked by another change in how the compiler orders and passes
arguments. The standard way to bypass /GS is to use a SEH ptr overwrite,
but so far, it doesn't seem possible to reach a SEH ptr with the
overflow, when using the PathCanonicalize method.
On Friday 11 August 2006 08:40, Brendan Dolan-Gavitt wrote:
Is there any technical reason that an exploit cannot be developed
against XP SP2 and Server 2003 SP1? Or is this only a limitation of
the current Metasploit exploit?
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- Re: Exploit for MS06-040 Out?, (continued)