Memory access of unmanaged DLL

#1

Hi!

I need to know, how much power an unmanaged DLL has about the "managed
memory".
Can I access memory of the managed code from a loaded unmanaged DLL?

The point is: Does a intruder, who injected code into the unmanged DLL
via e.g. a buffer overflow, have the possibility to read and modify
data in the managed memory?

Thank you!
Ruben

#2

"Mattias Sjögren" <mattias.dont.want.spam (AT) mvps (DOT) org> wrote

Quote:

Can I access memory of the managed code from a loaded unmanaged DLL?

Yes

This capability is essentially useless for any program that has to work
reliably, because the GC will move stuff around in the managed heap.

Quote:

The point is: Does a intruder, who injected code into the unmanged DLL
via e.g. a buffer overflow, have the possibility to read and modify
data in the managed memory?

Absolutely.

But an information leak is a problem even if it isn't reliable.

Quote:

Mattias

--
Mattias Sjögren [C# MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
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Memory access of unmanaged DLL

Dotnet Framework (CLR) microsoft.public.dotnet.framework.clr

Memory access of unmanaged DLL - 11-22-2006 , 11:56 AM

Re: Memory access of unmanaged DLL - 11-24-2006 , 11:34 AM