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Commit Graph

285 Commits

Author SHA1 Message Date
Stefan Metzmacher
7a6b3efdc6 CVE-2016-2110: auth/ntlmssp: split allow_lm_response from allow_lm_key
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11644

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-04-12 19:25:22 +02:00
Stefan Metzmacher
2843f012b6 CVE-2016-2110: auth/ntlmssp: maintain conf_flags and required_flags variables
We now give an error when required flags are missing.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11644

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-04-12 19:25:22 +02:00
Stefan Metzmacher
61ec7f069d CVE-2016-2110: auth/ntlmssp: let ntlmssp_handle_neg_flags() return NTSTATUS
In future we can do a more fine granted negotiation
and assert specific security features.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11644

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-04-12 19:25:22 +02:00
Stefan Metzmacher
57946ac7c1 auth/gensec: split out a gensec_verify_dcerpc_auth_level() function
We only need this logic once.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-17 17:17:16 +01:00
Stefan Metzmacher
cc3dea5a81 auth/gensec: make sure gensec_security_by_auth_type() returns NULL for AUTH_TYPE_NONE
ops->auth_type == 0, means the backend doesn't support DCERPC.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-17 17:17:16 +01:00
Stefan Metzmacher
59301830e2 auth/ntlmssp: remove ntlmssp_unwrap() fallback for LDAP
This is now handled by GENSEC_FEATURE_LDAP_STYLE.

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 06:52:29 +01:00
Stefan Metzmacher
122a5f6b58 auth/ntlmssp: add more compat for GENSEC_FEATURE_LDAP_STYLE
We want also work against old Samba servers which didn't had
GENSEC_FEATURE_LDAP_STYLE we negotiate SEAL too. We may remove this in a few
years. As all servers should support GENSEC_FEATURE_LDAP_STYLE by then.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-10 06:52:29 +01:00
Stefan Metzmacher
f3dbe19e14 auth/ntlmssp: implement GENSEC_FEATURE_LDAP_STYLE
We need to handle NTLMSSP_NEGOTIATE_SIGN as
NTLMSSP_NEGOTIATE_SEAL if GENSEC_FEATURE_LDAP_STYLE
is requested.

This works arround a bug in Windows, which allow signed only
messages using NTLMSSP and LDAP.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-10 06:52:29 +01:00
Stefan Metzmacher
069aee42c2 auth/gensec: add GENSEC_FEATURE_LDAP_STYLE define
This will be used for LDAP connections and may trigger
backend specific behaviour.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-10 06:52:29 +01:00
Günther Deschner
f6b9e1feab auth/ntlmssp: use ndr_push_AV_PAIR_LIST in gensec_ntlmssp_server_negotiate().
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>

Signed-off-by: Günther Deschner <gd@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-03-10 06:52:29 +01:00
Stefan Metzmacher
8af6b8d2eb auth/ntlmssp: use ntlmssp_version_blob() in the server
We already set NTLMSSP_NEGOTIATE_VERSION in
gensec_ntlmssp_server_start(), so it's always
set in chal_flags.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-10 06:52:28 +01:00
Stefan Metzmacher
4a1809cb14 auth/ntlmssp: let the client always include NTLMSSP_NEGOTIATE_VERSION
This matches a modern Windows client.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-10 06:52:28 +01:00
Stefan Metzmacher
a61ab398cc auth/ntlmssp: add ntlmssp_version_blob()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-10 06:52:28 +01:00
Stefan Metzmacher
4fca8eaaae auth/ntlmssp: don't send domain and workstation in the NEGOTIATE_MESSAGE
We don't set NTLMSSP_NEGOTIATE_OEM_{DOMAIN,WORKSTATION}_SUPPLIED anyway.

This matches modern Windows clients.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-10 06:52:28 +01:00
Stefan Metzmacher
efd4986794 auth/ntlmssp: set NTLMSSP_ANONYMOUS for anonymous authentication
This matches a modern Windows client.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-10 06:52:28 +01:00
Stefan Metzmacher
afba38dbf5 auth/ntlmssp: define all client neg_flags in gensec_ntlmssp_client_start()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-10 06:52:28 +01:00
Stefan Metzmacher
30d626024c auth/ntlmssp: NTLMSSP_NEGOTIATE_VERSION is not a negotiated option
NTLMSSP_NEGOTIATE_VERSION only indicates the existence of the version
information in the packet.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-10 06:52:28 +01:00
Stefan Metzmacher
e63442a1c2 auth/ntlmssp: split out a debug_ntlmssp_flags_raw() that's more complete
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-10 06:52:28 +01:00
Stefan Metzmacher
b133f66e0d auth/ntlmssp: implement GENSEC_FEATURE_NTLM_CCACHE
This can used in order to use the WINBINDD_CCACHE_NTLMAUTH
code of winbindd to do NTLMSSP authentication with a cached
password.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-10 06:52:28 +01:00
Stefan Metzmacher
0a93cad337 auth/gensec: add GENSEC_FEATURE_NTLM_CCACHE define
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-10 06:52:28 +01:00
Stefan Metzmacher
b3d4523ff7 auth/ntlmssp: provide a "ntlmssp_resume_ccache" backend
These can be used to implement the winbindd side of
the WINBINDD_CCACHE_NTLMAUTH call.

It can properly get the initial NEGOTIATE messages
injected if available.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-10 06:52:28 +01:00
Stefan Metzmacher
a85a02b631 auth/ntlmssp: add gensec_ntlmssp_server_domain()
This is a hack in order to temporary export the server domain
from NTLMSSP through the gensec stack.

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
0a9e37a0db auth/ntlmssp: keep ntlmssp_state->server.netbios_domain on the correct talloc context
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
8efcb49435 auth/gensec: make gensec_security_by_name() public
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-03-10 06:52:27 +01:00
Stefan Metzmacher
64364e365c auth/gensec: handle gensec_security_by_sasl_name(NULL, ...)
We do that for all other gensec_security_by_*() functions already.

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
5e913af833 auth/gensec: keep a pointer to a possible child/sub gensec_security context
This is a hack in order to temporary implement something like:
gensec_ntlmssp_server_domain(), which may be used within spnego.

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
Andrew Bartlett
fc747539dc pycredentials: Use pytalloc_BaseObject_PyType_Ready()
This changes pycredentials to use talloc.BaseObject() just like the PIDL output

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2016-03-08 01:58:29 +01:00
Andrew Bartlett
7506321996 pycredentials: Remove PyCredentialCacheContainerObject
We can call pytalloc_reference() and avoid having this in the header file

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2016-03-08 01:58:29 +01:00
Andrew Bartlett
fe4b990cba pycredentials: Do not use pytalloc_Object directly
This type should not be used directly, it should have been made private
to pytalloc

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2016-03-08 01:58:29 +01:00
Volker Lendecke
58de339247 credentials: Fix a typo
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2016-02-16 10:50:10 +01:00
Volker Lendecke
2c73ed8c69 credentials: Fix whitespace
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2016-02-16 10:50:10 +01:00
Günther Deschner
30386c23ae ntlmssp: when pulling messages it is important to clear memory first.
Guenther

Signed-off-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2016-02-04 09:29:16 +01:00
Jelmer Vernooij
da8674c72a Rename 'errors' to 'samba-errors' and make it public.
This is necessary because it has public headers.

Signed-off-by: Jelmer Vernooij <jelmer@jelmer.uk>
Reviewed-By: Andrew Bartlett <abartlet@samba.org>
Reviewed-By: Stefan Metzmacher <metze@samba.org>

Autobuild-User(master): Jelmer Vernooij <jelmer@samba.org>
Autobuild-Date(master): Wed Jan 13 07:47:04 CET 2016 on sn-devel-144
2016-01-13 07:47:04 +01:00
Jelmer Vernooij
773cfba9af Avoid including libds/common/roles.h in public loadparm.h header.
Signed-Off-By: Jelmer Vernooij <jelmer@samba.org>
Reviewed-By: Andrew Bartlett <abartlet@samba.org>
Reviewed-By: Stefan Metzmacher <metze@samba.org>
2016-01-13 04:43:23 +01:00
Jelmer Vernooij
c46a8cf258 Make gensec private, for now.
Signed-Off-By: Jelmer Vernooij <jelmer@samba.org>
Reviewed-By: Andrew Bartlett <abartlet@samba.org>
Reviewed-By: Stefan Metzmacher <metze@samba.org>
2016-01-13 04:43:23 +01:00
Volker Lendecke
57a0bc9a9f lib: Use asn1_has_error()
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-01-06 00:54:18 +01:00
Volker Lendecke
ad630a681e asn1: Make asn1_peek_full_tag return 0/errno
We don't need the full power of NTSTATUS here. This was the only
NTSTATUS in asn1.h, so I think it's worth removing it.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-01-06 00:54:17 +01:00
Douglas Bagnall
8b26559aeb pycredentials: add get_kerberos_state() method
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Ralph Boehme <slow@samba.org>
2015-12-15 00:08:57 +01:00
Andreas Schneider
ab0cbf9bba auth: Fix picky const warnings in gssapi_pac
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
2015-11-23 15:17:18 +01:00
Jeremy Allison
d4059e1a53 auth: gensec: Parameters out_mem_ctx and ev are passed in the wrong order to gensec_spnego_server_try_fallback().
Fix suggested by <lev@zadarastorage.com>. Fixes a memory leak.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11565

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

Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Thu Oct 22 11:27:19 CEST 2015 on sn-devel-104
2015-10-22 11:27:19 +02:00
Richard Sharpe
dba9e631bd Prevent a crash in Python modules that try to authenticate by ensuring we reject cases where credendials fields are not intialized.
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): Tue Aug 25 21:45:18 CEST 2015 on sn-devel-104
2015-08-25 21:45:18 +02:00
Volker Lendecke
2fbce8ad0a gensec: Fix CID 242642 Unchecked return value
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ira Cooper <ira@samba.org>
2015-08-20 12:49:21 +02:00
Andreas Schneider
c9a8fff525 s4-auth: Always pass down the salt principal
We should always pass down the saltPrincipal to smb_krb5_update_keytab()
function.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-07-17 01:38:15 +02:00
Alexander Bokovoy
a0d2dd0e01 auth/credentials: if credentials have principal set, they are not anonymous anymore
When dealing with Kerberos, we cannot consider credentials anonymous
if credentials were obtained properly.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11265

Signed-off-by: Alexander Bokovoy <ab@samba.org>
Reviewed-by: Stefan (metze) Metzmacher <metze@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>

Autobuild-User(master): Alexander Bokovoy <ab@samba.org>
Autobuild-Date(master): Wed Jul 15 16:32:55 CEST 2015 on sn-devel-104
2015-07-15 16:32:54 +02:00
Stefan Metzmacher
f3f1c38925 auth/credentials: anonymous should not try to use kerberos
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
2015-07-03 02:00:28 +02:00
Andreas Schneider
0438027a47 auth: Explain why GSS_KRB5_CRED_NO_CI_FLAGS_X is needed
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>

Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Wed Jun 24 13:37:02 CEST 2015 on sn-devel-104
2015-06-24 13:37:02 +02:00
Stefan Metzmacher
8a4c0abb3e auth/kerberos: add gssapi_get_sig_size() and gssapi_{seal,unseal,sign,check}_packet() helper functions
These make use of gss_[un]wrap_iov[_length]() where required and support
header signing.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2015-06-24 01:03:16 +02:00
Stefan Metzmacher
2cd3e51e19 auth/gensec: remove unused gensec_[un]wrap_packets() hooks
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
756508c8c3 auth/gensec: make sure gensec_start_mech_by_authtype() resets SIGN/SEAL before starting
We want to set GENSEC_FEATURE_SIGN and GENSEC_FEATURE_SEAL based on the given
auth_level and should not have GENSEC_FEATURE_SEAL if
DCERPC_AUTH_LEVEL_INTEGRITY is desired.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11061

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2015-06-23 14:38:53 +02:00
Stefan Metzmacher
3542d33314 auth/gensec: gensec_[un]seal_packet() should only work with GENSEC_FEATURE_DCE_STYLE
gensec_sig_size() also requires GENSEC_FEATURE_DCE_STYLE if
GENSEC_FEATURE_SEAL is negotiated.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2015-06-23 14:38:53 +02:00