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From:   Florian Weimer <fweimer@redhat.com>
To:     James Morris <jmorris@namei.org>
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        <philippe.trebuchet@ssi.gouv.fr>, Shuah Khan <shuah@kernel.org>,
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Subject: Re: [RFC PATCH v1 0/5] Add support for O_MAYEXEC
References: <20181212081712.32347-1-mic@digikod.net>
        <alpine.LRH.2.21.1812130642250.29507@namei.org>
Date:   Wed, 12 Dec 2018 21:13:16 +0100
In-Reply-To: <alpine.LRH.2.21.1812130642250.29507@namei.org> (James Morris's
        message of "Thu, 13 Dec 2018 06:51:53 +1100 (AEDT)")
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* James Morris:

> If you're depending on the script interpreter to flag that the user may 
> execute code, this seems to be equivalent in security terms to depending 
> on the user.  e.g. what if the user uses ptrace and clears O_MAYEXEC?

The argument I've heard is this: Using ptrace (and adding the +x
attribute) are auditable events.

Florian