Bugtraq: Re: First patch :)

[chris () FERRET LMH OX AC UK (Chris Evans)]

Hi,

The "ruid" idea and prevent exec/fork of suid programs, is a nice idea but
is really security through obscurity.

If a hacker knows this patch is in place, he just replaces the shellcode
so instead of doing:

syscall exec /bin/sh

it does

syscall chmod 666 /etc/passwd

or any other exciting piece of code you care to run. You need not launch a
separate process to run it.

Cheers
Chris