netdev - Re: [PATCH V6 0/4] Add SELinux SCTP protocol support

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Message-ID: <CAHC9VhRG8AYpy3O1eLNCg6LP_i8Hk_U4zEGy3_frE2TMzZnG6w@mail.gmail.com>
Date:   Wed, 14 Feb 2018 14:19:03 -0500
From:   Paul Moore <paul@...l-moore.com>
To:     Richard Haines <richard_c_haines@...nternet.com>,
        marcelo.leitner@...il.com
Cc:     selinux@...ho.nsa.gov, netdev@...r.kernel.org,
        linux-sctp@...r.kernel.org, linux-security-module@...r.kernel.org,
        Vlad Yasevich <vyasevich@...il.com>, nhorman@...driver.com,
        Stephen Smalley <sds@...ho.nsa.gov>,
        Eric Paris <eparis@...isplace.org>, casey@...aufler-ca.com,
        James Morris <james.l.morris@...cle.com>
Subject: Re: [PATCH V6 0/4] Add SELinux SCTP protocol support

On Tue, Feb 13, 2018 at 3:52 PM, Richard Haines
<richard_c_haines@...nternet.com> wrote:
> These patches have been built on Fedora 27 with kernel-4.16.0-0.rc1 plus
> the following userspace patches to enable testing:
>
> 1) Updates to libsepol 2.7 to support the sctp portcon statement.
>    The patch is available from:
>          http://arctic.selinuxproject.org/~rhaines/selinux-sctp/
>          selinux-Add-support-for-the-SCTP-portcon-keyword.patch
>
> 2) Updates to the SELinux Test Suite adding SCTP tests. Please read the
>    selinux-testsuite/README.sctp for details. The patch is available from:
>          http://arctic.selinuxproject.org/~rhaines/selinux-sctp/
>          selinux-testsuite-Add-SCTP-test-support.patch
>
> 3) Updates to lksctp-tools that show SELinux info in sctp_darn and
>    sctp_test. It also contains a minor patch for test_1_to_1_connect.c
>    as when CIPSO/CALIPSO configured, NetLabel returns a different error
>    code for illegal addresses in test 5. The patch is available from:
>          http://arctic.selinuxproject.org/~rhaines/selinux-sctp/
>          lksctp-tools-Add-SELinux-support-to-sctp_test-and-sc.patch
>
> All SCTP lksctp-tools/src/func_tests run correctly in enforcing mode.
>
> All SCTP regression tests "./sctp-tests run" run correctly in enforcing
> mode. These tests are obtained from: https://github.com/sctp/sctp-tests
>
> The selinux-testsuite patch also adds remote tests (that need some manual
> configuration). These are useful for testing CIPSO/CALIPSO over a network
> with a number of categories to produce large ip option fields with various
> message sizes forcing fragmentation etc..
>
> Changes since RFC Patch:
> Removed the NetLabel patch (was [RFC PATCH 4/5] netlabel: Add SCTP support)
> as re-engineered. However this patchset will require the NetLabel
> patch at [1] to fully run the SCTP selinux-testsuite.
>
> V1 Changes:
> PATCH 1/4
> Remove unused parameter from security_sctp_assoc_request().
> Reformat and update LSM-sctp.rst documentation.
> PATCH 2/4
> Add variables and RCU locks as requested in [2] to support IP options.
> PATCH 3/4
> Added security_sctp_assoc_request() hook to sctp_sf_do_unexpected_init()
> and sctp_sf_do_5_2_4_dupcook().
> Removed security_sctp_assoc_request() hook from sctp_sf_do_5_1C_ack() as
> no longer required.
> PATCH 4/4
> Reformat and update SELinux-sctp.rst documentation.
> Remove bindx and connectx permissions.
> Rework selinux_socket_connect() and selinux_netlbl_socket_connect() to
> utilise helpers for code reuse.
> Add spinlock to selinux_sctp_assoc_request().
> Remove unused parameter from security_sctp_assoc_request().
> Use address->sa_family == AF_INET in *_bind and *_connect to ensure
> correct address type.
> Minor cleanups.
>
> V2 Changes:
> PATCH 4/4 - Remove spin lock from selinux_sctp_assoc_request()
> PATCH 4/4 - Fix selinux_sctp_sk_clone() kbuild test robot catch [3]
>
> V3 Changes:
> PATCH 2/4 - Account for IP options length in sctp.h sctp_frag_point() by
> Marcelo
>
> V4 Changes:
> PATCH 1/4 - Move specific SELinux descriptions from LSM-sctp.rst and
> lsm_hooks.h to SELinux-sctp.rst in PATCH 4/4
> PATCH 4/4 - Rename selinux_netlbl_sctp_socket_connect() to
> selinux_netlbl_socket_connect_locked() and move description comments to
> selinux_sctp_bind_connect()
>
> V5 Change: Rework selinux_netlbl_socket_connect() and
> selinux_netlbl_socket_connect_locked as requested by Paul.
>
> V6 Changes:
> Rework SCTP patches 2/4 and 3/4 as there have been major SCTP updates since
> kernel 4.14.
>
> [1] https://marc.info/?l=selinux&m=151061619115945&w=2
> [2] https://marc.info/?l=selinux&m=150962470215797&w=2
> [3] https://marc.info/?l=selinux&m=151198281817779&w=2
>
> Richard Haines (4):
>   security: Add support for SCTP security hooks
>   sctp: Add ip option support
>   sctp: Add LSM hooks
>   selinux: Add SCTP support

Marcelo, or any other SCTP folks, do the SCTP changes still look okay
to you?  I'd like to merge these into the selinux/next tree by the end
of the week ...

-- 
paul moore
www.paul-moore.com