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Re: Buffer overflow prevention
From: Crispin Cowan <crispin () immunix com>
Date: Wed, 13 Aug 2003 16:33:43 -0700

Patrick Dolan wrote:

There is a flag for the Gnu C/C++ compilers, -fstack-protector, that will implement ProPolice stack protection. It should prevent stack smashing techniques.

That is not actually in the standard GCC; it is in a forked GCC that OpenBSD chooses to ship.

We (Immunix) are in the process of trying to make StackGuard (the original) meet all of the criteria required for acceptance into GCC. At the GCC Summit <http://www.gccsummit.org/2003/> in May, we presented a StackGuard talk <http://www.gccsummit.org/2003/view_abstract.php?talk=31> on that topic.


Crispin Cowan, Ph.D.           http://immunix.com/~crispin/
Chief Scientist, Immunix       http://immunix.com

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