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Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Mar 16 07:48:37 CET 2018 on sn-devel-144
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13247
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Wed Jan 31 00:38:09 CET 2018 on sn-devel-144
This avoids a lot of cpu cycles, which were wasted for each single smb
connection, even if the client didn't use kerberos.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12973
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Fri Aug 18 10:04:57 CEST 2017 on sn-devel-144
If the keytab file isn't readable, we may call
krb5_kt_end_seq_get() with an invalid kt_cursor.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=10490
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Saxl <mike@mwsys.mine.bz>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Administrators really care about how their users were authenticated, so make
this clear.
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>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12554
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12554
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12554
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12554
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
MIT krb5 1.9 version of gss_krb5_import_cred() may fail when importing
credentials from a keytab without specifying actual principal.
This was fixed in MIT krb5 1.9.2 (see commit
71c3be093db577aa52f6b9a9a3a9f442ca0d8f20 in MIT krb5-1.9 branch, git
master's version is bd18687a705a8a6cdcb7c140764d1a7c6a3381b5).
Move fallback code to the smb_gss_krb5_import_cred wrapper. We only
expect this fallback to happen with krb5 GSSAPI mechanism, thus hard
code use of krb5 mech when calling to gss_acquire_cred.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12611
Signed-off-by: Alexander Bokovoy <ab@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Alexander Bokovoy <ab@samba.org>
Autobuild-Date(master): Wed Mar 8 22:00:24 CET 2017 on sn-devel-144
This will make sure we correctly fall back to NTLMSSP.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12557
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Thu Mar 2 12:41:40 CET 2017 on sn-devel-144
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>
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>
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>
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>
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
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>
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>
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>
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>
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
This way are able to support GENSEC_FEATURE_SIGN_PKT_HEADER also together with
GENSEC_FEATURE_SEAL.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Wed Jun 24 04:00:43 CEST 2015 on sn-devel-104
This way are able to support GENSEC_FEATURE_SIGN_PKT_HEADER.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This improved code simply cleans up the memory as soon as possible,
rather than using memcmp(). Otherwise, we segfault if
krb5_kt_start_seq_get fails, as it can set the fd element in the
handle to -1.
Change-Id: Ib4821ef944a7e12cd8a891ae07dbfc0567c65495
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Pair-programmed-with: Garming Sam <garming@catalyst.net.nz>
Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Thu Nov 27 07:38:02 CET 2014 on sn-devel-104
