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Message-ID: <200403262344.i2QNibPV027611@turing-police.cc.vt.edu>
From: Valdis.Kletnieks at vt.edu (Valdis.Kletnieks@...edu)
Subject: Talk in #grsecurity
On Fri, 26 Mar 2004 23:10:02 +0100, Henk Stubbe <henk@...ejezus.nl> said:
> Spender sent me the alleged exploit for exec-shield... and it bypasses the
> protections offered by exec-shield completely without the need for brute
> forcing.
Does it actually bypass a protection that exec-shield claims to give, or
is it doing something that exec-shield doesn't claim to be able to stop?
There's no love lost between the pax and exec-shield crews:
http://marc.theaimsgroup.com/?l=linux-kernel&m=107209069402935&w=2
http://marc.theaimsgroup.com/?l=linux-kernel&m=107209256604442&w=2
So I'd evaluate very carefully any claim made by either crew. It's possible
that there is a real hole in exec-shield. It's also possible that the
"exploit" is simply doing stuff that exec-shield won't stop by design -
remember that a design *goal* of exec-shield was to not be as kernel-intrusive
as pax, so it would have a smaller footprint and be less likely to break stuff
unintentionally.
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