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Re: [PATCH/RFC] do not source/exec scripts on noexec mount points


From: Mike Frysinger
Subject: Re: [PATCH/RFC] do not source/exec scripts on noexec mount points
Date: Mon, 14 Dec 2015 00:22:06 -0500

On 12 Dec 2015 23:05, Stephane Chazelas wrote:
> 2015-12-12 16:01:26 -0500, Mike Frysinger:
> [...]
> > This is not a perfect solution as it can still be worked around by
> > inlining the code itself:
> >   $ bash -c "$(cat /dev/shm/test.sh)"
> >   hi
> 
> Or
> 
> cat /dev/shm/test.sh | bash

right, there's no way to look through pipes

> I think this kind of hardening is better left to things like
> selinux/apparmor.

security is not an all-or-nothing proposotion.  the whole point is to
have defence in depth.
-mike

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