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1289 Commits

Author SHA1 Message Date
Stefan Metzmacher
7c3ea9fe96 s3:librpc/gse: make use of gss_krb5_import_cred() instead of gss_acquire_cred()
This avoids the usage of the ccselect_realm logic in MIT krb5,
which leads to unpredictable results.

The problem is the usage of gss_acquire_cred(), that just creates
a credential handle without ccache.

As result gss_init_sec_context() will trigger a code path
where it use "ccselect" plugins. And the ccselect_realm
module just chooses a random ccache from a global list
where the realm of the provides target principal matches
the realm of the ccache user principal.

In the winbindd case we're using MEMORY:cliconnect to setup
the smb connection to the DC. For ldap connections we use
MEMORY:winbind_ccache.

The typical case is that we do the smb connection first.
If we try to create a new ldap connection, while the
credentials in MEMORY:cliconnect are expired,
we'll do the required kinit into MEMORY:winbind_ccache,
but the ccselect_realm module will select MEMORY:cliconnect
and tries to get a service ticket for the ldap server
using the already expired TGT from MEMORY:cliconnect.

The solution will be to use gss_krb5_import_cred() and explicitly
pass the desired ccache, which avoids the ccselect logic.

We could also use gss_acquire_cred_from(), but that's only available
in modern MIT krb5 versions, while gss_krb5_import_cred() is available
in heimdal and all supported MIT versions (>=1.9).
As far as I can see both call the same internal function in MIT
(at least for the ccache case).

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12480

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2017-01-02 18:04:13 +01:00
Stefan Metzmacher
b61a93755c s3:librpc/gse: remove unused #ifdef HAVE_GSS_KRB5_IMPORT_CRED
We always have gss_krb5_import_cred(), it available in heimdal
and also the oldest version (1.9) of MIT krb5 that we support.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12480

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2017-01-02 18:04:13 +01:00
Stefan Metzmacher
6f029d5870 s3:librpc/gse: include ccache_name in DEBUG message if krb5_cc_resolve() fails
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12480

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2017-01-02 18:04:13 +01:00
Stefan Metzmacher
f52ca0cbb6 CVE-2016-2125: s3:gse: avoid using GSS_C_DELEG_FLAG
We should only use GSS_C_DELEG_POLICY_FLAG in order to let
the KDC decide if we should send delegated credentials to
a remote server.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12445

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
Reviewed-by: Simo Sorce <idra@samba.org>
2016-12-20 07:51:14 +01:00
Andreas Schneider
430c2d1844 s3:crypto: Use smb_krb5_kt_open_relative() for MEMORY keytab
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-12-16 01:55:13 +01:00
Stefan Metzmacher
d134f57ccf s3:gse: We need to use the users realm in the target_principal
This is important in order to let the kdc of the users realm start with
the trust referral routing.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2016-11-15 11:00:26 +01:00
Volker Lendecke
e217b3ee41 libcli: Increase the debug level for expired tickets
In libads/sasl.c we do a retry in this case. We should not
spam syslog with that.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Nov  2 05:22:38 CET 2016 on sn-devel-144
2016-11-02 05:22:38 +01:00
Stefan Metzmacher
376e58d2fb s3:dcerpc_helpers: correctly support DCERPC_AUTH_LEVEL_PACKET
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2016-10-26 11:20:16 +02:00
Stefan Metzmacher
fc65e48cbe librpc/rpc: move dcerpc_pull_ncacn_packet() from source3/librpc/rpc/ to the toplevel
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2016-10-26 11:20:13 +02:00
Stefan Metzmacher
ab7868a964 s3:librpc: move NDR_PRINT_DEBUG() into the caller of dcerpc_pull_ncacn_packet()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2016-10-26 11:20:13 +02:00
Stefan Metzmacher
1bfba2c516 s3:librpc: remove bigendian argument from dcerpc_pull_ncacn_packet()
We should get this from the packet itself.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2016-10-26 11:20:13 +02:00
Stefan Metzmacher
b827a7e860 s3:gse: pass gss_got_flags to gssapi_get_sig_size()
We need to calculate the signature length based on the negotiated
flags. This is most important on the server side where,
gss_accept_sec_context() doesn't get gss_want_flags, but fills
gss_got_flags.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2016-10-26 11:20:12 +02:00
Volker Lendecke
46fac3b796 lib: Fix a signed/unsigned hickup
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2016-10-19 01:26:14 +02:00
Günther Deschner
a5264b187b mit: make it possible to build with MIT kerberos and --picky-developer
Guenther

Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2016-09-29 08:02:18 +02:00
Andreas Schneider
2454374309 krb5_wrap: Rename kerberos_get_principal_from_service_hostname()
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-08-31 20:59:16 +02:00
Andreas Schneider
6ddeb4aa42 krb5_wrap: Rename smb_krb5_keytab_name()
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-08-31 20:59:15 +02:00
Andreas Schneider
aa1cca9f27 krb5_wrap: Rename smb_krb5_open_keytab()
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-08-31 20:59:15 +02:00
Andreas Schneider
d1de425385 krb5_wrap: Rename smb_get_enctype_from_kt_entry()
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-08-31 20:59:15 +02:00
Andreas Schneider
2622e16d76 krb5_wrap: Rename get_kerberos_allowed_etypes()
Use consistent naming.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-08-31 20:59:13 +02:00
Günther Deschner
b6595037f3 s3:librpc:crypto:gse: increase debug level for gse_init_client().
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11872

Guenther

Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2016-04-28 16:51:16 +02:00
Stefan Metzmacher
97ee4d82b1 CVE-2015-5370: s3:librpc/rpc: verify auth_context_id in dcerpc_check_auth()
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-04-12 19:25:32 +02:00
Stefan Metzmacher
9dedf276f0 CVE-2015-5370: s3:librpc/rpc: make use of auth->auth_context_id in dcerpc_add_auth_footer()
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-04-12 19:25:32 +02:00
Stefan Metzmacher
ce8d2d6a70 CVE-2015-5370: s3:librpc/rpc: add auth_context_id to struct pipe_auth_data
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-04-12 19:25:32 +02:00
Stefan Metzmacher
0f8d4a50f8 CVE-2015-5370: s3:librpc/rpc: remove unused dcerpc_pull_dcerpc_auth()
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-04-12 19:25:32 +02:00
Stefan Metzmacher
8a6240872c CVE-2015-5370: s3:librpc/rpc: let dcerpc_check_auth() auth_{type,level} against the expected values.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-04-12 19:25:31 +02:00
Stefan Metzmacher
642fe0aa16 CVE-2015-5370: s3:librpc/rpc: remove auth trailer and possible padding within dcerpc_check_auth()
This simplifies the callers a lot.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-04-12 19:25:31 +02:00
Stefan Metzmacher
67f6fd305c CVE-2015-5370: s3:librpc/rpc: don't call dcerpc_pull_auth_trailer() if auth_length is 0
All other paranoia checks are done within dcerpc_pull_auth_trailer()
now.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11344

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-04-12 19:25:28 +02:00
Günther Deschner
31f33a3f39 s3:smbXsrv.idl: add 8 byte channel_sequence number and request counters to IDL.
Guenther

Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-03-22 00:23:21 +01:00
Volker Lendecke
3940d4e386 crypto: Fix CID 1356314 Resource leak
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-03-18 00:29:13 +01:00
Günther Deschner
4a49f6fac9 s3:librpc:idl:libnet_join: add encryption types to libnet_JoinCtx.
Guenther

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11755

Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2016-03-14 16:19:23 +01:00
Stefan Metzmacher
dec9d085f3 s3:librpc/gse: implement gensec_gse_max_{input,wrapped}_size()
This is important in order to support gensec_[un]wrap() with GENSEC_SEAL.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-03-10 06:52:27 +01:00
Stefan Metzmacher
79bf883534 s3:librpc/gse: don't log gss_acquire_creds failed at level 0
Some callers just retry after a kinit.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-03-10 06:52:27 +01:00
Stefan Metzmacher
e4aebd7e28 s3:librpc/gse: correctly support GENSEC_FEATURE_SESSION_KEY
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-03-10 06:52:27 +01:00
Stefan Metzmacher
a8fa078f1a s3:librpc/gse: set GSS_KRB5_CRED_NO_CI_FLAGS_X in gse_init_client() if available
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-03-10 06:52:26 +01:00
Stefan Metzmacher
84c66f1a38 s3:librpc/gse: fix debug message in gse_init_client()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-03-10 06:52:26 +01:00
Stefan Metzmacher
46b9252518 s3:librpc/gse: make use of GSS_C_EMPTY_BUFFER in gse_init_client
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-03-10 06:52:26 +01:00
Andreas Schneider
1e1e12a825 s3-libads: Pass down the salt principal in smb_krb5_kt_add_entry()
This is a preparation to move smb_krb5_kt_add_entry() to krb5_wrap.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2016-03-10 06:52:25 +01:00
Michael Adam
03a3aa9815 smbXsrv.idl: add create_action to smbXsrv_open
Needed for create replay.

Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-03-03 13:09:24 +01:00
Michael Adam
1eb5f1e422 librpc:smbXsrv.idl: add flags to smbXsrv_open
These flags reflect the need for and state of the replay cache.

Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-03-03 13:09:24 +01:00
Stefan Metzmacher
3590f3f562 idl:smbXsrv: add smbXsrv_connection_pass structures.
To be used for the connection passing message.

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

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
2016-01-26 15:58:11 +01:00
Stefan Metzmacher
bae1b9401c idl:smbXsrv: add smbXsrv_client_global structures
This is for marshalling smbXsrv_client.

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

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
2016-01-26 15:58:11 +01:00
Michael Adam
d60ffcfe44 smbXsrv: introduce bool smbXsrv_client->server_multi_channel_enabled
defaulting to false.

Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2016-01-23 00:08:36 +01:00
Ralph Boehme
9d284431fc s3:smb2_server: add signing state tracking flags
Add flags that track the signing state of all incoming and outgoing SMB2
packets and a helper function that can be used to determine whether a
session of tcon can be considered "signed".

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-01-22 07:52:21 +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
e501c733ec s3:smb2_server: add encryption state tracking flags
Add two encryption state tracking flags that can be used to tell whether
a session or tcon is "encrypted" and add a helper function to calculate
the encryption state from those flags.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-01-22 07:52:20 +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
Richard Sharpe
8936281bcc gss: samba member server returns incorrect error code with some versions of krb5
As per Simo's comments in https://bugzilla.redhat.com/show_bug.cgi?id=1279249
we need Samba to return the correct thing to the client when gss_accept_sec_context
returns a token along with an error.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11592

Signed-off-by: Richard Sharpe <rsharpe@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Nov 12 01:44:08 CET 2015 on sn-devel-104
2015-11-12 01:44:08 +01:00
Michael Adam
86dd7b941c smbXsrv_session:idl: remove the preauth and gensec members
They are now taken from the pending_auth member (smbXsrv_session_auth0).

Pair-Programmed-With: Stefan Metzmacher <metze@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): Fri Jul 31 01:03:13 CEST 2015 on sn-devel-104
2015-07-31 01:03:13 +02:00
Michael Adam
5e463b553b smbXsrv_session:idl: add smbXsrv_session_auth0
This contains various auth related items for a session,
in particular preauth. This is in preparation to take
the direct member preauth from smbXsrv_session and have
all session auth code operate on session->pending_auth
instead of session->preauth and friends.

Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
2015-07-30 21:58:14 +02:00