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Commit Graph

153 Commits

Author SHA1 Message Date
Jule Anger
7804bf55ad s4:tls_tstream: create tstream_tls_params_internal
The following commits will implement the reloading of tls certificates.
Therefore we need to overwrite the interal memory.

Note we need to make sure x509_cred and dh_params from
tstream_tls_params_internal stay alive for the whole lifetime
of this session!

See 'man gnutls_credentials_set' and
'man gnutls_certificate_set_dh_params'.

Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>

Signed-off-by: Jule Anger <janger@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-07-25 20:04:29 +00:00
Noel Power
0fd7b13ebc s4:lib:tls: Don't negotiate session resumption with session tickets
tls_tstream can't properly handle 'New Session Ticket' messages
sent 'after' the client sends the 'Finished' message.

This is needed because some servers (at least elasticsearch) wait till
they get 'Finished' messgage from the client before sending the
"New Ticket" message.

Without this patch what typcially happens is when the application code
sends data it then tries to read the response, but, instead of the
response to the request it actually recieves the "New Session Ticket"
instead. The "New Session Ticket" message gets processed by the upper layer
logic e.g.
   tstream_tls_readv_send
       ->tstream_tls_readv_crypt_next
           ->tstream_tls_retry_read
               ->gnutls_record_recv

instead of the core gnutls routines.

This results in the response processing failing due to the
currently 'unexpected' New Ticket message.

In order to avoid this scenario we can ensure the client doesn't
negotiate resumption with session tickets.

Signed-off-by: Noel Power <noel.power@suse.com>

Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Wed Nov 16 09:58:45 UTC 2022 on sn-devel-184
2022-11-16 09:58:44 +00:00
Andreas Schneider
53e3a959b9 s3:lib:tls: Use better priority lists for modern GnuTLS
We should use the default priority list. That is a good practice,
because TLS protocol hardening and phasing out of legacy algorithms,
is easier to co-ordinate when happens at a single place. See crypto
policies of Fedora.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14408

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>

Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Wed Jun 17 17:42:02 UTC 2020 on sn-devel-184
2020-06-17 17:42:02 +00:00
Andreas Schneider
ab3394f9f5 s4:tls: Fix generating TLS RSA certs with FIPS140-2
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
2020-04-08 13:02:39 +00:00
Andreas Schneider
71816984c3 s4:lib:tls: Fix cert and privkey types
../../source4/lib/tls/tlscert.c:42:2: warning: ‘gnutls_x509_crt’ is
    deprecated [-Wdeprecated-declarations]
   42 |  gnutls_x509_crt cacrt, crt;
      |  ^~~~~~~~~~~~~~~
../../source4/lib/tls/tlscert.c:43:2: warning: ‘gnutls_x509_privkey’ is
    deprecated [-Wdeprecated-declarations]
   43 |  gnutls_x509_privkey key, cakey;
      |  ^~~~~~~~~~~~~~~~~~~

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2019-11-19 04:48:29 +00:00
Andreas Schneider
0e159b725e s4:lib: Remove gnutls_global_(de)init() from libtls
This is handled by the gnutls library constructor/destructor.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2019-11-14 08:01:44 +00:00
Andrew Bartlett
69361a43ad lib/tls: Remove unused header definitions from source4/lib/tls/tls.h (tls socket wrapper)
These were removed in eb15acdd35 but the
header declarations were not removed.

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2019-06-26 04:12:32 +00:00
Andrew Bartlett
eb15acdd35 lib/tls: Remove unused source4/lib/tls/tls.c (tls socket wrapper)
The last caller was removed in 72c79e30f0
to remove the web server as all other callers use tls_tstream.

Found by callcatcher.

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
2019-05-06 05:46:11 +00:00
Andreas Schneider
1fa3c9a3cc waf: Remove configure steps from source4/lib/tls
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2019-04-30 23:18:27 +00:00
Andreas Schneider
daa128f81b s3:tls: Remove #ifdef for GnuTLS
This is a requirement now.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2019-04-30 23:18:26 +00:00
Andreas Schneider
788d9f31d5 s4:lib: Use #ifdef instead of #if for config.h definitions
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
2018-11-28 23:19:24 +01:00
Alexander Bokovoy
0c423a3a92 source4/lib/tls/wscript: update to handle waf 2.0.4
Signed-off-by: Alexander Bokovoy <ab@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2018-09-05 06:37:24 +02:00
Stefan Metzmacher
09da62f1a3 s4:lib/tls: fix the developer build without gnutls support
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2018-01-10 01:01:24 +01:00
Andrew Bartlett
5bb341fb9c s4/lib/tls: Use SHA256 to sign the TLS certificates
The use of SHA-1 has been on the "do not" list for a while now, so make our
self-signed certificates use SHA256 using the new
gnutls_x509_crt_sign2 provided since GNUTLS 1.2.0

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12953
2017-08-15 08:07:10 +02:00
Andreas Schneider
85e3d1774c s4:tls: Do not use deprecated GnuTLS types
Those have been deprecated with GnuTLS 1.0.20 in 2004. I think it is
safe to use them now ;)

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2017-05-09 23:20:08 +02:00
Thomas Nagy
e36e1f7b12 build:wafsamba: Remove ambiguous 'if x in conf.env' constructs
Configuration values such as HAVE_STDDEF_H can be set to 0
to indicate a test failure. Waf 1.5 has a few bugs that
prevent configuration tests from setting such values
consistently on failures.

Consequently, conditions such as 'if conf.env.VARNAME' must be
used to indicate that config test successes are expected.
Note that conf.env.VARNAME always returns an empty list (False value)
when no variable is defined so there are no risk of raising
AttributeError/KeyError exceptions.

Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>

Autobuild-User(master): Uri Simchoni <uri@samba.org>
Autobuild-Date(master): Tue Feb 21 13:47:07 CET 2017 on sn-devel-144
2017-02-21 13:47:07 +01:00
Lukas Slebodnik
fa99ae70f1 tls: Fix warning Wunused-variable
The variable error_pos is used only with enabled ENABLE_GNUTLS
There are warnings if compiled witout gnutls

../source4/lib/tls/tls_tstream.c: In function ‘_tstream_tls_connect_send’:
../source4/lib/tls/tls_tstream.c:1053:14:
    warning: unused variable ‘error_pos’ [-Wunused-variable]
  const char *error_pos;
              ^~~~~~~~~
../source4/lib/tls/tls_tstream.c: In function ‘_tstream_tls_accept_send’:
../source4/lib/tls/tls_tstream.c:1333:14:
     warning: unused variable ‘error_pos’ [-Wunused-variable]
  const char *error_pos;
              ^~~~~~~~~

Signed-off-by: Lukas Slebodnik <lslebodn@redhat.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>

Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Wed Sep 21 00:01:09 CEST 2016 on sn-devel-144
2016-09-21 00:01:08 +02:00
Stefan Metzmacher
64a9cd2a38 CVE-2016-2113: s4:lib/tls: implement infrastructure to do peer verification
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11752

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-04-12 19:25:25 +02:00
Stefan Metzmacher
b5681c4125 CVE-2016-2113: s4:lib/tls: create better certificates and sign the host cert with the ca cert
The generated ca cert (in ca.pem) was completely useless,
it could be replaced by cert.pem.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11752

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-04-12 19:25:25 +02:00
Andreas Schneider
53e8feeb6a waf: Check for GnuTLS 3.4.7
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2015-12-10 08:49:20 +01:00
Björn Jacke
22a37c453d tls: increase Diffie-Hellman group size to 2048 bits
1024 bits is already the minimum accepted size of current TLS libraries. 2048
is recommended for servers, see https://weakdh.org/

Signed-off-by: Bjoern Jacke <bj@sernet.de>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Thu Sep  3 03:47:48 CEST 2015 on sn-devel-104
2015-09-03 03:47:48 +02:00
Andrew Bartlett
ac25a8ac4f lib/tls: Ensure SSLv3 is disabled in the web server by default
By calling gnutls_priority_set_direct() the behaviour should now match the LDAP server

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11076
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Pair-programmed-with: Garming Sam <garming@catalyst.net.nz>
2015-08-31 01:10:22 +02:00
Andrew Bartlett
cdaa1224c4 lib/tls: Remove unused tls_init_client code
This is unused as the callers have now been migrated to tls_tstream

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11076
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Pair-programmed-with: Garming Sam <garming@catalyst.net.nz>
2015-08-31 01:10:22 +02:00
Andrew Bartlett
374d73617d lib/tls: Add new 'tls priority' option
This adds a new option to the smb.conf to allow administrators to disable
TLS protocols in GnuTLS without changing the code.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11076
Pair-programmed-with: Garming Sam <garming@catalyst.net.nz>
Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
2015-07-20 03:08:26 +02:00
Andrew Bartlett
1a8c1bd952 Remove support for OpenPGP certificates in our TLS client and server
We do not provide parameters to configure these, and OpenPGP for TLS (RFC 6091) is not used in AD

Pair-programmed-with: Garming Sam <garming@catalyst.net.nz>
Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
2015-07-20 03:08:26 +02:00
Stefan Metzmacher
6f2c29a13c s4:lib/tls: ignore non-existing ca and crl files in tstream_tls_params_client()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-06-23 22:12:08 +02:00
Stefan Metzmacher
3d298b994d s4:lib/tls: fix tstream_tls_connect_send() define
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-06-23 22:12:07 +02:00
Evangelos Foutras
c6ad8a10c1 s4:lib/tls: fix build with gnutls 3.4
gnutls_certificate_type_set_priority() was removed in GnuTLS 3.4.0. Use
gnutls_priority_set_direct instead.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=8780

Signed-off-by: Björn Jacke <bj@sernet.de>
Reviewed-By: Jelmer Vernooij <jelmer@samba.org>

Autobuild-User(master): Björn Jacke <bj@sernet.de>
Autobuild-Date(master): Wed Apr 29 22:29:02 CEST 2015 on sn-devel-104
2015-04-29 22:29:02 +02:00
Stefan Metzmacher
0a4adb6730 s4:lib/tls: remove allow_warnings=True
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-03-20 20:43:12 +01:00
Stefan Metzmacher
f074e271a1 s4:lib/tls: add tls_cert_generate() prototype to tls.h
This avoids compiler warnings...

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-03-20 20:43:12 +01:00
Thomas Nagy
3c0e3af395 Transition to waf 1.8: wrapped conf.check_cfg
Reviewed-By: Jelmer Vernooij <jelmer@samba.org>

(forward ported to current master by abartlet)

Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2015-03-16 03:00:07 +01:00
Andrew Bartlett
61d962bdfd lib/tls: Fix behaviour of --disable-gnutls and remove link to gcrypt
We no longer link against gcrypt if gnutls > 3.0.0 is found, as these
versions use libnettle.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11135

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2015-03-12 22:24:07 +01:00
Garming Sam
a1f1db277a build: Require GnuTLS if building with Active Directory
Without GnuTLS, we don't have ldaps:// support and we are unable to
readily create RSA keys of the correct length for the BackupKey
protocol.

Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2015-02-25 01:08:12 +01:00
Stefan Metzmacher
bb187cc1e9 s4:lib/tls: explicitly use allow_warnings=True
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2014-04-02 09:03:46 +02:00
Stefan Metzmacher
a2c3479878 Revert "s4:tls_tstream: allow mode of SSL keyfile to be 0400, not only 0600"
This reverts commit 05c1fe5055.

This was discussed here:
https://bugzilla.samba.org/show_bug.cgi?id=10392#c11

This generated warnings like:
invalid permissions on file
'/memdisk/metze/W/b138235/samba/bin/ab/promoted_dc/private/tls/key.pem': has
0600 should be 0400'.

I think we need a better way. Maybe file_check_permissions()
should get allow_perms and deny_perms. And we would call it
with allow_perms = 0400 and deny_perms = 0177. And bits in none
of them are ignored.

For now we revert this and wait for a better fix.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Fri Mar 28 12:37:17 CET 2014 on sn-devel-104
2014-03-28 12:37:17 +01:00
Michael Brown
05c1fe5055 s4:tls_tstream: allow mode of SSL keyfile to be 0400, not only 0600
Bug: https://bugzilla.samba.org/show_bug.cgi?id=10392

Signed-off-by: Michael Brown <michael@netdirect.ca>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>

Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Fri Jan 31 01:27:03 CET 2014 on sn-devel-104
2014-01-31 01:27:03 +01:00
Volker Lendecke
91b04f708f tls: Fix CID 242014 Uninitialized scalar variable
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2013-11-13 09:01:55 +01:00
Volker Lendecke
2be1eeab7f tls: Fix some noblank line endings
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2013-11-13 09:01:55 +01:00
Björn Baumbach
22af043d2f CVE-2013-4476: s4:libtls: check for safe permissions of tls private key file (key.pem)
If the tls key is not owned by root or has not mode 0600 samba will not
start up.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=10234

Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>

Signed-off-by: Björn Baumbach <bb@sernet.de>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>

Autobuild-User(master): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(master): Mon Nov 11 13:07:16 CET 2013 on sn-devel-104
2013-11-11 13:07:16 +01:00
Björn Baumbach
e0248cde8d CVE-2013-4476: s4:libtls: Create tls private key file (key.pem) with mode 0600
Bug: https://bugzilla.samba.org/show_bug.cgi?id=10234

Signed-off-by: Björn Baumbach <bb@sernet.de>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2013-11-11 11:14:36 +01:00
Andrew Bartlett
d0d05f8474 s4-lib/tls: Try socket_send() multiple times to send partial packets
This works around an artificial limitation in socket_wrapper that breaks
some versions of GnuTLS when we return a short write.

Instead, keep pushing until the OS will not take it.

The correct solution will be to use tls_tstream, but the client code
for this is not yet tested and needs the ldap client layer changed
to use it.

Andrew Bartlett

Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Wed Jul 18 11:23:55 CEST 2012 on sn-devel-104
2012-07-18 11:23:55 +02:00
Matthias Dieter Wallnöfer
32c82fe69b s4:lib/tls - include GNUTLS headers consistently using <...>
These are system-specific.

Reviewed-by: Jelmer

Autobuild-User: Matthias Dieter Wallnöfer <mdw@samba.org>
Autobuild-Date: Sat Feb 18 00:43:58 CET 2012 on sn-devel-104
2012-02-18 00:43:58 +01:00
Andrew Bartlett
ac57defdb4 s4-lib/tls: remove unused tls_support()
Found by callcatcher: http://www.skynet.ie/~caolan/Packages/callcatcher.html

Andrew Bartlett
2012-02-10 16:45:12 +11:00
Matthias Dieter Wallnöfer
456c69f95e s4:lib/tls - call "gnutls_transport_set_lowat" only on GNUTLS < 3.0
This function call together with the lowat feature has been removed in release
3.0 as described in this mailing list post:
http://old.nabble.com/gnutls_transport_set_lowat-deprecated-td32554230.html.

Since we do not make any use of lowat (esprimed by each function call)
we are free to simply omit it on v3.0 and later.

This addresses bug #8537.

Reviewed by: abartlet + metze

Autobuild-User: Matthias Dieter Wallnöfer <mdw@samba.org>
Autobuild-Date: Wed Nov 30 20:11:14 CET 2011 on sn-devel-104
2011-11-30 20:11:14 +01:00
Simo Sorce
15efcbaa09 s4:lib: use tevent_ fns names instead of legcay event_ ones 2011-08-13 09:54:16 -04:00
Andrew Bartlett
af5f494bd2 build: provide tevent-util as a public library
This is needed so that OpenChange can get at _tevent_req_nterr(), which is referenced
by generated PIDL output.

Andrew Bartlett
2011-08-08 13:34:06 +02:00
Matthias Dieter Wallnöfer
22fcb8e494 s4:lib/tls/wscript - exclude known broken GNUTLS releases
This definitely fixes bug #7218.

Autobuild-User: Matthias Dieter Wallnöfer <mdw@samba.org>
Autobuild-Date: Thu Mar 10 11:58:27 CET 2011 on sn-devel-104
2011-03-10 11:58:27 +01:00
Stefan Metzmacher
93733e4e31 s4:tls_tstream: also use a dynamic buffer for the pull side
Maybe that fixes the remaining issues with some gnutls versions.

metze

Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Tue Jan 18 17:26:08 CET 2011 on sn-devel-104
2011-01-18 17:26:08 +01:00
Stefan Metzmacher
361b4ed016 s4:tls_tstream: fix partial reads, so that the gnutls layer doesn't read the same data twice
metze
2011-01-18 16:34:28 +01:00
Stefan Metzmacher
69ad3f7f90 tls_tstream: use a dynamic buffer for the push case
Some versions of gnutls doesn't handle EAGAIN correctly,
so we better allow sending buffers without a low size limitation,
the limit is now UINT16_MAX (0xFFFF) and we allocate the buffer
with talloc each time.

metze
2010-12-04 12:12:21 +01:00