Re: Stack growing and buffer overflows

[=?unknown-8bit?Q?J=F6rn?= Engel]

On Tue, 11 March 2003 00:00:12 +0100, Felipe Alfaro Solana wrote:
>  
> on x86, the stack grows downwards (from higher memory addresses to
> lower memory addresses). This makes buffer overflows attacks easy to
> exploit: if a function uses strcpy() instead of strncpy() to copy
> data [...]
>  
> However, what would happen if the stack was implemented to grow
> upwards [...]

Stack overflows by mistake would go unnoticed, bad.
Stakc overflows in order to gain root privileges take only little more
effort, no change.

Nothing gained, something lost.

Jörn

-- 
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Glück macht nicht satt.