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Re: secure distro's

Kevin Chu (kevin@portal.ca)
Tue, 17 Aug 1999 01:46:47 -0700

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Vincent Janelle wrote:

> On Sun, 15 Aug 1999, Harondel J. Sibble wrote:
> > what specifically is a "heap attack?"

If I remember correctly, stack space is allocated from one end of
available free memory, and heap is allocated from the other end. One
provides the allocation for automatic variables and such, and I don't
remember what the other provides. Maybe malloc()? Anyway, things can
go bad when the tops of each meet in the middle of the available
memory. :)

So I'd guess a heap attack is similar to whatever a stack attack is,
you play with the pointers and things (I don't know I'm not a hacker)
with different mechanisms because they provide memory for different
operations.

Kevin

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