Re: Buffer overflow prevention

From: Jonathan A. Zdziarski (jonathan_at_networkdweebs.com)
Date: 08/13/03

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    To: "Eygene A. Ryabinkin" <rea@rea.mbslab.kiae.ru>
Date: 13 Aug 2003 14:26:04 -0400

    I think this is overkill and will probably cause your applications to
    run much slower than they already do. I don't see why one couldn't
    simply put the variable information *after* the rest of the stack
    information, instead of before, and have the kernel zero out the next
    stack frame before it gets written to (although this may cause some
    performance problems in itself). This would prevent a buffer overflow
    from A) overwriting SS:ESP and B) overflowing code onto the next
    stackframe.

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