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Commit Graph

171 Commits

Author SHA1 Message Date
Stefan Metzmacher
894e5001c7 smbd: add an effective {smb,smbd_smb2}_request->ev_ctx that holds the event context used for the request processing
In future this will an impersonation wrapper tevent_context based on the
user session.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2018-06-18 08:59:21 +02:00
Jeremy Allison
8dabcf8948 s3: debug: smb2: Create a new DBGC_SMB2 debug class and mark all smbd/smb2_*.c files with it.
Will allow easier smb2-specific debugging.

https://bugzilla.samba.org/show_bug.cgi?id=13347

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Böhme <slow@samba.org>
2018-03-22 02:15:13 +01:00
Stefan Metzmacher
bb5c394fde s3:smb2_sesssetup: allow a compound request after a SessionSetup
This is not a full fix yet as we don't allow compound requests
after going async.

With SMB 3.11 requiring signed TreeConnect requests it's pointless
to try to compound requests after a SessionSetup.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12845

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sat Jun 17 10:55:25 CEST 2017 on sn-devel-144
2017-06-17 10:55:25 +02:00
Andrew Bartlett
366f8cf090 auth: Log the transport connection for the authorization
We also log if a simple bind was over TLS, as this particular case matters to a lot of folks

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
2017-03-29 02:37:27 +02:00
Andrew Bartlett
85536c1ff3 auth: Always supply both the remote and local address to the auth subsystem
This ensures that gensec, and then the NTLM auth subsystem under it, always gets the
remote and local address pointers for potential logging.

The local address allows us to know which interface an authentication is on

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Pair-Programmed-by: Gary Lockyer <gary@catalyst.net.nz>
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
2017-03-29 02:37:26 +02:00
Andrew Bartlett
d82ac32eb7 s3-auth: Pass service_description into gensec via auth_generic_prepare()
This allows the GENSEC service description to be set from the various callers
that go via this function.

The RPC service description is the name of the interface from the IDL.

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Pair-Programmed-by: Gary Lockyer <gary@catalyst.net.nz>
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
2017-03-29 02:37:25 +02:00
Ralph Boehme
a2c59d3e45 smbd: use remote arch caching
We're using the client guid as gencache db key, so this can only be used
with SMB 2_10 or higher.

The idea is that whenever we get a direct SMB2 negprot, we can then try
to see if a value is cached for the client's guid.

When a user logs off the cache entry is deleted.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-05-04 01:28:22 +02:00
Stefan Metzmacher
79a71545bf s3:smbd: only mark real guest sessions with the GUEST flag
Real anonymous sessions don't get it.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11847

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-04-28 16:51:17 +02:00
Stefan Metzmacher
5cb4ee27f8 CVE-2016-2114: s3:smbd: use the correct default values for "smb signing"
This means an ad_dc will now require signing by default.
This matches the default behavior of Windows dc and avoids
man in the middle attacks.

The main logic for this hides in lpcfg_server_signing_allowed().

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11687

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-04-12 19:25:25 +02:00
Michael Adam
a1a8746174 s3:smb2_sesssetup: implement SMB3 session bind (disabled)
This is disabled for now. It will be possible to enabled it
via a config switch once the underpinnings are complete.

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

Signed-off-by: Michael Adam <obnox@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>

Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Sat Jan 23 03:22:18 CET 2016 on sn-devel-144
2016-01-23 03:22:18 +01:00
Stefan Metzmacher
edd781d5a8 s3:smb2_sesssetup: treat BINDING in smbd_smb2_session_setup_auth_return
This adds smbd_smb2_bind_auth_return(), a
variant of auth_return for session binding.

Pair-Programmed-With: Michael Adam <obnox@samba.org>

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
2016-01-23 00:08:36 +01:00
Ralph Boehme
fe5353c82e s3:smb2_server: convert signing_required bool to flags bitmap
Use a flags bitmap for storing the signing state. This is in preparation
of a subsequent patch that adds more flags to the bitmap.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-01-22 07:52:21 +01:00
Ralph Boehme
736cd36d36 s3:smb2_server: store encryption cipher in the channel
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-01-22 07:52:20 +01:00
Ralph Boehme
bfdffea0fa s3:smb2_server: convert encryption desired and required bools to flags
This adds a bitmap smbXsrv_encrpytion_flags with flags to the
smbXsrv_session_global.tdb and smbXsrv_tcon_global.tdb that we use
instead of bools for desired and required.

We need this info in the smbXsrv tdbs for smbstatus. Subsequent commits
for smbstatus will use it.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-01-22 07:52:20 +01:00
Michael Adam
fba90fd8fe s3:smbd_smb2_reauth_generic_return: make use of smb2req->xconn
More specifically move from smb2req->sconn to smb2req->xconn->client->sconn
to avouid using smb2req->sconn directly.

Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>

Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Wed Jan 13 14:02:21 CET 2016 on sn-devel-144
2016-01-13 14:02:21 +01:00
Stefan Metzmacher
57053c5cb9 s3:smb2_sesssetup: let smbd_smb2_reauth_generic_return() cope with channels
Pair-Programmed-With: Michael Adam <obnox@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-09-10 18:32:15 +02:00
Michael Adam
69d2af10d4 s3:smb2_sesssetup: let smbd_smb2_auth_generic_return() cope with channels
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-09-10 18:32:15 +02:00
Michael Adam
6f95bc5025 s3:smb2_sesssetup: change talloc hierarchy in smbd_smb2_session_setup_gensec_done
Only put session_info to the session->global context if we use it.

Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-09-10 18:32:15 +02:00
Stefan Metzmacher
d391f6daea s3:smb2_sesssetup: use session->pending_auth
Pair-Programmed-With: Michael Adam <obnox@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
2015-07-30 21:58:14 +02:00
Michael Adam
8ab4b05d33 s3:smb2_sesssetup: check that the connection belongs to the session in sess.setup
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2015-07-29 18:26:07 +02:00
Michael Adam
fc228025d7 smbd:smb2: only enable encryption in session if desired
Don't enforce it but only announce ENCRYPT_DATA, using the
encryption_desired flag in session setup.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11372

Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
2015-07-07 14:05:27 +02:00
Jeremy Allison
0aefbf45c9 smbd: Fix clients connecting unencrypted with PROTOCOL_SMB2_24 or higher.
Nonce code was terminating connections where xconn->smb2.server.cipher == 0.

If no negotiated cipher (smb2.server.cipher is zero) set nonce_high_max to zero.
smb2_get_new_nonce() returns NT_STATUS_ENCRYPTION_FAILED if it is ever called with
session->nonce_high_max == 0.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=11300

Signed-off-by: Jeremy Allison <jra@samba.org>
2015-06-17 22:10:24 +02:00
Simo Sorce
461c69bd7c s3:smb2_server: In CCM and GCM mode we can't reuse nonces
Reuse of nonces with AES-CCM and AES-GCM leads to catastrophic failure,
so make sure the server drops the connection if that ever happens.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=11300

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

Signed-off-by: Simo Sorce <simo@redhat.com>
Signed-off-by: Stefan Metzmacher <metze@samba.org>

Autobuild-User(master): Simo Sorce <idra@samba.org>
Autobuild-Date(master): Fri May 29 22:38:50 CEST 2015 on sn-devel-104
2015-05-29 22:38:50 +02:00
Stefan Metzmacher
4481fea86a s3:smb2_sesssetup.c: For SMB >= 3.1, derive crypto keys from preauth
This protects the full connection setup including
a posteriori verification of the negotiate messages,
by signing the final session setup response with a signing key
derived from the preauth hash and the authentication session key.

Pair-Programmed-With: Michael Adam <obnox@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
2015-05-08 13:00:28 +02:00
Stefan Metzmacher
5871d3da87 s3:smb2_sesssetup: remove unused smbd_smb2_session_setup_* destructors
The cleanup of a failing session setup is now handled in
smbd_smb2_session_setup_wrap_*().

Bug: https://bugzilla.samba.org/show_bug.cgi?id=11182

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-05-06 22:33:19 +02:00
Stefan Metzmacher
50aeb6b38b s3:smb2_sesssetup: add smbd_smb2_session_setup_wrap_send/recv()
The wrapper calls smbXsrv_session_shutdown_send/recv() in case of an error,
this makes sure a failing reauth shuts down the session like an explicit logoff.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=11182

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-05-06 22:33:19 +02:00
Stefan Metzmacher
8f0d4d1132 s3:smb2_sesssetup: always assign smb2req->session when a session was created.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11182

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-05-06 22:33:19 +02:00
Stefan Metzmacher
95057fe375 s3:smb2_sesssetup: let smbd_smb2_logoff_* use smbXsrv_session_shutdown_*
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11182

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-05-06 22:33:19 +02:00
Volker Lendecke
b3385f74db smbd: Make SMB3 clients use encryption with "smb encrypt = auto"
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>

Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Tue Mar  3 10:40:42 CET 2015 on sn-devel-104
2015-03-03 10:40:42 +01:00
Jeremy Allison
eb05766a8c Revert "s3: smbd: signing. Ensure we respond correctly to an SMB2 negprot with SMB2_NEGOTIATE_SIGNING_REQUIRED."
Even though the MS-SMB2 spec says so, Windows doesn't behave
like this.

This reverts commit 1cea6e5b6f.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: "Stefan (metze) Metzmacher" <metze@samba.org>
2015-02-23 22:32:48 +01:00
Jeremy Allison
1cea6e5b6f s3: smbd: signing. Ensure we respond correctly to an SMB2 negprot with SMB2_NEGOTIATE_SIGNING_REQUIRED.
Bug 11103:  - Samba does not set the required flags in the SMB2/SMB3 Negotiate Protocol Response when signing required by client

https://bugzilla.samba.org/show_bug.cgi?id=11103

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Steve French <smfrench@gmail.com>
2015-02-19 20:42:07 +01:00
Stefan Metzmacher
382019656e s3:smb2_server: allow reauthentication without signing
If signing is not required we should not require it for reauthentication.
Windows clients would otherwise fail to reauthenticate.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=10958

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2014-12-12 20:47:06 +01:00
Stefan Metzmacher
1ed30a6ba7 s3:smb2_server: check xconn->smb2.server.cipher instead of xconn->smb2.server.capabilities
SMB 3.10 and later won't have SMB2_CAP_ENCRYPTION anymore.

xconn->smb2.server.cipher == 0 is the indication that we don't support encryption on the connection.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2014-10-16 19:30:04 +02:00
Stefan Metzmacher
89c6d67124 s3:smb2_sesssetup: we don't need to do a 2nd smb2srv_session_lookup()
For the continuation of a SMB2 SessionSetup we already have the
smb2req->session (with NT_STATUS_MORE_PROCESSING_REQUIRED).

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-09-19 09:15:13 +02:00
Stefan Metzmacher
7f649f9e22 s3:smb2_sesssetup: use smb2req->sconn in smbd_smb2_reauth_generic_return()
xconn->sconn will go away soon.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-09-19 09:15:11 +02:00
Jeremy Allison
01a18811cc s3: smbd: smb2-sessionsetup. Fix use after free when the sessionsetup request state is freed before struct smbXsrv_session struct.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Mon Sep  8 09:52:23 CEST 2014 on sn-devel-104
2014-09-08 09:52:23 +02:00
Stefan Metzmacher
bd19fd1286 s3:smbd: remember the time of the session setup auth_time
This is the time of the last reauth.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-08-06 09:51:14 +02:00
Stefan Metzmacher
d47c006d9d s3:smb2_sesssetup: make use of smb2req->xconn
We should use stuff relative to the current request.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-08-06 09:51:14 +02:00
Stefan Metzmacher
f261dd9c7d s3:smb2_sesssetup: split out smbd_smb2_session_setup_auth_return()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-08-06 09:51:14 +02:00
Stefan Metzmacher
4a07b14cea s3:smb2_server: pass smbXsrv_connection to smbd_server_connection_terminate*()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-08-06 09:51:13 +02:00
Stefan Metzmacher
c9e171ff72 s3:smb2_*: make use of smb2req->xconn where possible
We need to use the connection that is used by the current request.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-08-06 09:51:13 +02:00
Stefan Metzmacher
92e96bedfb s3:smb2_server: move sconn->smb2.requests to xconn->smb2.requests
This prepares the structures for multi-channel support.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-08-06 09:51:11 +02:00
Stefan Metzmacher
7c26475d58 s3:smb2_sesssetup: cancel and wait for pending requests on logoff
Bug: https://bugzilla.samba.org/show_bug.cgi?id=10344

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2014-03-12 09:27:38 -07:00
Jeremy Allison
506817dfc9 s3:smb2_sesssetup: split smbd_smb2_logoff into an async *_send/recv pair.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=10344

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

Signed-off-by: Jeremy Allison <jra@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
2014-03-12 09:27:37 -07:00
Stefan Metzmacher
39832ff588 s3:smb2_sesssetup: make use of smbd_smb2_generate_outbody()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2014-03-05 13:59:22 -08:00
Christian Ambach
ca8353efaa s3:smbd/smb2 fix compiler warnings
about a potentially uninitialized variables

Signed-off-by: Christian Ambach <ambi@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2013-12-12 14:21:27 -08:00
Jeremy Allison
d4a5c832f1 smbd: Invalidate the session correctly.
When a session is invalidated then we must also ensure it isn't used in
any pending requests being processed.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2013-11-04 09:46:45 +01:00
Michael Adam
25494628a2 smbd:smb2: fix crash when smb2 session reauth fails
https://bugzilla.samba.org/show_bug.cgi?id=10208

Authentication error in smb2 session reauth invalidates
the session. In this case the session must in contrast
to successful session setup requests be torn down and live
no longer than the request.

The talloc move of the session from the global session
table to the request ensures that the session setup
reply can still be correctly signed, but subsequent
requests on the connection don't find a session any more.

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

Signed-off-by: Michael Adam <obnox@samba.org>
2013-10-15 11:48:19 -07:00
Gregor Beck
e24b1041b1 s3:smbd: initialize session->global before calling session_claim
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
2012-10-19 12:14:59 +02:00
Gregor Beck
02b9b79447 s3:smbd: remove smbd_server_connection argument from session_claim()
retrieve the server connection from the smbXsrv_session  argument instead.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
2012-10-19 12:14:59 +02:00