From: Jordan Glover <Golden_Miller83@protonmail.ch>
To: "Mickaël Salaün" <mic@digikod.net>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Al Viro" <viro@zeniv.linux.org.uk>,
"James Morris" <jmorris@namei.org>,
"Jonathan Corbet" <corbet@lwn.net>,
"Kees Cook" <keescook@chromium.org>,
"Matthew Garrett" <mjg59@google.com>,
"Michael Kerrisk" <mtk.manpages@gmail.com>,
"Mickaël Salaün" <mickael.salaun@ssi.gouv.fr>,
"Mimi Zohar" <zohar@linux.ibm.com>,
"Philippe Trébuchet" <philippe.trebuchet@ssi.gouv.fr>,
"Shuah Khan" <shuah@kernel.org>,
"Thibaut Sautereau" <thibaut.sautereau@ssi.gouv.fr>,
"Vincent Strubel" <vincent.strubel@ssi.gouv.fr>,
"Yves-Alexis Perez" <yves-alexis.perez@ssi.gouv.fr>,
"kernel-hardening@lists.openwall.com"
<kernel-hardening@lists.openwall.com>,
"linux-api@vger.kernel.org" <linux-api@vger.kernel.org>,
"linux-security-module@vger.kernel.org"
<linux-security-module@vger.kernel.org>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>
Subject: Re: [RFC PATCH v1 0/5] Add support for O_MAYEXEC
Date: Wed, 12 Dec 2018 16:29:47 +0000 [thread overview]
Message-ID: <ML-sxPRwNNExkZHkXghYN7e3VrhuZXYLjFv-aniX8qbjcde2GfHMBaI4B3A7IoUEfycQcWCPuxATkYHOz--FqMjH1KRwxMxBCb6Q-1IsKTM=@protonmail.ch> (raw)
In-Reply-To: <20181212081712.32347-1-mic@digikod.net>
On Wednesday, December 12, 2018 9:17 AM, Mickaël Salaün <mic@digikod.net> wrote:
> Hi,
>
> The goal of this patch series is to control script interpretation. A
> new O_MAYEXEC flag used by sys_open() is added to enable userland script
> interpreter to delegate to the kernel (and thus the system security
> policy) the permission to interpret scripts or other files containing
> what can be seen as commands.
>
> The security policy is the responsibility of an LSM. A basic
> system-wide policy is implemented with Yama and configurable through a
> sysctl.
>
> The initial idea come from CLIP OS and the original implementation has
> been used for more than 10 years:
> https://github.com/clipos-archive/clipos4_doc
>
> An introduction to O_MAYEXEC was given at the Linux Security Summit
> Europe 2018 - Linux Kernel Security Contributions by ANSSI:
> https://www.youtube.com/watch?v=chNjCRtPKQY&t=17m15s
> The "write xor execute" principle was explained at Kernel Recipes 2018 -
> CLIP OS: a defense-in-depth OS:
> https://www.youtube.com/watch?v=PjRE0uBtkHU&t=11m14s
>
> This patch series can be applied on top of v4.20-rc6. This can be
> tested with CONFIG_SECURITY_YAMA. I would really appreciate
> constructive comments on this RFC.
>
> Regards,
>
Are various interpreters upstreams interested in adding support
for O_MAYEXEC if it land in kernel? Did you contacted them about this?
Jordan
next prev parent reply other threads:[~2018-12-12 16:29 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-12 8:17 [RFC PATCH v1 0/5] Add support for O_MAYEXEC Mickaël Salaün
2018-12-12 8:17 ` [RFC PATCH v1 1/5] fs: Add support for an O_MAYEXEC flag on sys_open() Mickaël Salaün
2018-12-12 14:43 ` Jan Kara
2018-12-12 17:09 ` Mickaël Salaün
2018-12-12 20:42 ` Mimi Zohar
2018-12-13 9:47 ` Matthew Bobrowski
2018-12-13 14:23 ` Mickaël Salaün
2019-04-15 18:47 ` Steve Grubb
2019-04-16 11:49 ` Florian Weimer
2019-04-16 15:34 ` Steve Grubb
2019-04-17 10:01 ` Florian Weimer
2019-04-17 15:04 ` Mickaël Salaün
2019-04-17 14:55 ` Mickaël Salaün
2019-08-04 23:55 ` Andy Lutomirski
2019-08-06 16:40 ` Mickaël Salaün
2018-12-12 8:17 ` [RFC PATCH v1 2/5] fs: Add a MAY_EXECMOUNT flag to infer the noexec mount propertie Mickaël Salaün
2018-12-12 8:17 ` [RFC PATCH v1 3/5] Yama: Enforces noexec mounts or file executability through O_MAYEXEC Mickaël Salaün
2018-12-12 14:28 ` Mickaël Salaün
2018-12-12 17:09 ` Jann Horn
2018-12-13 14:49 ` Mickaël Salaün
2019-01-03 11:17 ` Jann Horn
2019-01-08 13:29 ` Mickaël Salaün
2019-01-08 23:30 ` Kees Cook
2019-01-09 13:41 ` Mickaël Salaün
2018-12-12 8:17 ` [RFC PATCH v1 4/5] selftest/yama: Add tests for O_MAYEXEC enforcing Mickaël Salaün
2018-12-12 8:17 ` [RFC PATCH v1 5/5] doc: Add documentation for Yama's open_mayexec_enforce Mickaël Salaün
2018-12-12 16:29 ` Jordan Glover [this message]
2018-12-12 17:01 ` [RFC PATCH v1 0/5] Add support for O_MAYEXEC Mickaël Salaün
2018-12-12 19:51 ` James Morris
2018-12-12 20:13 ` Florian Weimer
2018-12-12 23:40 ` James Morris
2018-12-13 5:13 ` Florian Weimer
2018-12-13 14:57 ` Mickaël Salaün
2018-12-13 3:02 ` Matthew Wilcox
2018-12-13 5:22 ` Florian Weimer
2018-12-13 11:04 ` Mimi Zohar
2018-12-13 11:26 ` Florian Weimer
2018-12-13 12:16 ` Mimi Zohar
2018-12-13 12:16 ` Matthew Wilcox
2018-12-13 15:17 ` Mickaël Salaün
2018-12-13 17:13 ` Matthew Wilcox
2018-12-13 17:36 ` Mickaël Salaün
2018-12-13 17:44 ` Matthew Wilcox
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