Re: [Announcement] "Exec Shield", new Linux security feature

From: Andi Kleen (ak@suse.de)
Date: Sun May 04 2003 - 10:48:39 EST


Ingo Molnar <mingo@redhat.com> writes:

>
> ie. if the binary anywhere has code that does:
>
> system("/bin/sh")

You just need system(char *arg) { ... } (= in every libc). Then put /bin/sh somewhere and
a pointer to it on the stack as argument and overwrite some return address on the
stack to jump to it.

-Andi
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