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So far we autocreated local user accounts based on just the
account_name (just ignoring any domain part).
This only happens via a possible 'add user script',
which is not typically defined on domain members
and on NT4 DCs local users already exist in the
local passdb anyway.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14556
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14801
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
add_sid_to_array_unique() only fails for ENOMEM, and other parts of
the auth stack would probably crash under ENOMEM anyway. But this is
authorization-related code that should be as clean as possible.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Under the following conditions a user from an ignored domain might be able to
authenticate:
- using Kerberos
- successfully previous authentication so the idmap and name caches are filled
- winbind not running (fwiw, winbindd is mandatory on a domain member)
- nscd running with a cached getpwnam for the ignored user (otherwise auth fails
because getpwnam fails)
- lookup_name() function being modified to look into the name cache before
contacting winbindd. Currently it talks directly to winbindd and that will
check the cache.
Currently, authentication will only fail because creating the local token for
the user fails because an LSA lookupname RPC call fails (because winbindd is not
running).
All of this makes a successfull authentication unlikelly, but that is more by
accident then by design.
To ensures that if winbindd is not running and as such winbindd itself can not
enforce the restriction, also implement the ignored domains check in the auth
system as a last line of defense.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14602
RN: "winbind:ignore domains" doesn't prevent user login from trusted domain
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Fixes:
source3/auth/auth_util.c:283:11: warning: Value stored to 'ret' during its initialization is never read <--[clang]
NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
^~~ ~~~~~~~~~~~~~~~~~~~~~~
source3/auth/auth_util.c:2005:11: warning: Value stored to 'nt_status' during its initialization is never read <--[clang]
NTSTATUS nt_status = NT_STATUS_OK;
^~~~~~~~~ ~~~~~~~~~~~~
2 warnings generated.
Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
This changes ensures that smbd always adds BUILTIN\Guests to the guest token
which is required for guest authentication.
Currently the guest token depends on the on-disk configured group mappings. If
there's an existing group mapping for BUILTIN\Guests, but LOCALSAM\Guest is not
a member, the final guest token won't contain BUILTIN\Guests.
For SMB2 the flag SMB2_SESSION_FLAG_IS_GUEST will not be set in the final SMB2
SESSION_SETUP response, because smbd sets it based on the token containing the
BUILTIN\Guests SID S-1-5-32-546.
At the same time, the packet is not signed which causes Windows clients and
smbclient to reject the unsigned SMB2 SESSION_SETUP response.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13944
Pair-programmed-with: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Wed Jun 5 16:55:26 UTC 2019 on sn-devel-184
Generate a GUID for each successful authorization, this will allow the
tying of events in the logs back to a specific session.
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We only need to adjust sanitized_username in order to keep the same behaviour.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13328
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
These functions make it possible to construct a full auth_session_info
from the information available from an auth_user_info_dc structure.
This has all the logic from create_local_token() that is used
to transform a auth_serversupplied_info to a full auth_session_info.
In order to workarround the restriction that auth_user_info_dc
doesn't contain hints for the unix token/name, we use
the special S-1-5-88 (Unix_NFS) sids:
- S-1-5-88-1-Y gives the uid=Y
- S-1-5-88-2-Y gives the gid=Y
- S-1-5-88-3-Y gives flags=Y AUTH3_UNIX_HINT_*
The currently implemented flags are:
- AUTH3_UNIX_HINT_QUALIFIED_NAME
unix_name = DOMAIN+ACCOUNT
- AUTH3_UNIX_HINT_ISLOLATED_NAME
unix_name = ACCOUNT
- AUTH3_UNIX_HINT_DONT_TRANSLATE_FROM_SIDS
Don't translate the nt token SIDS into uid/gids
using sid mapping.
- AUTH3_UNIX_HINT_DONT_TRANSLATE_TO_SIDS
Don't translate the unix token uid/gids to S-1-22-X-Y SIDS
- AUTH3_UNIX_HINT_DONT_EXPAND_UNIX_GROUPS
The unix token won't get expanded gid values
from getgroups_unix_user()
By using the hints it is possible to keep the current logic
where an authentication backend provides uid/gid values and
the unix name.
Note the S-1-5-88-* SIDS never appear in the final security_token.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13328
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
The primary gid might not be in the gid array.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13328
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
We have a stackframe we can use for the lifetime of the session.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Feb 21 02:46:40 CET 2018 on sn-devel-144
This gets rid of some strange macro and makes sure we clenaup at the
end.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13209
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Mon Jan 15 22:16:13 CET 2018 on sn-devel-144
The next commit will add an additional caller that in rpc_client and I
don't want to pull in AUTH_COMMON. The natural place to consolidate
netlogon related helper functions seems to be util_netlogon.c which
already has copy_netr_SamBaseInfo().
No change in behaviour.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This implements the same behavior as Windows,
we should pass the domain and account names given
by the client directly to the auth backends,
they can decide if they are able to process the
authentication pass it to the next backend.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=8630
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We should avoid contacting winbind if we already know the domain is our
local sam or our primary domain.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=8630
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
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>
This will allow the logging code to make clear which protocol an authentication was for.
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>
We have global_sid_System, so we don't need to dom_sid_parse("S-1-5-18");
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): Mon Feb 27 11:31:53 CET 2017 on sn-devel-144
When mapping user and domain during NTLM authentication, an empty domain
is mapped to the local SAM db. However, an empty domain may legitimately
be used if the user field has both user and domain in upn@realm format.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12375
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Signed-off-by: Trever L. Adams <trever.adams@gmail.com>
Reviewed-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Oct 13 04:26:26 CEST 2016 on sn-devel-144
This includes user_principal_name and dns_domain_name.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We call make_server_info(NULL) and it is possible that we do not free
it, because server_info is not allocated on the memory context we pass
to the function.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=9862
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
We set nt_username above but do not use it in this function.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=9862
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
