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Since memcmp_const_time() doesn't act as an exact replacement for
memcmp(), and its return value is only ever compared with zero, simplify
it and emphasize the intention of checking equality by returning a bool
instead.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This helps to avoid timing attacks.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15010
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We already use talloc_zero() and mapped_state will be removed in the
next commits.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13879
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14932
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): Tue Jan 4 20:57:41 UTC 2022 on sn-devel-184
This is not strictly needed, but makes it easier to audit
that we don't miss important places.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14556
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The fake async code has been pushed down into the 3 users, remove the sync
callback. Overall it's more lines of code, but the central interface is
simplified.
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 Jan 6 23:34:00 UTC 2020 on sn-devel-184
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
Autobuild-User(master): Alexander Bokovoy <ab@samba.org>
Autobuild-Date(master): Wed Aug 14 16:26:47 UTC 2019 on sn-devel-184
This got lost somehow during refactoring. This is still viable
information when trying to figure out what is going wrong when
authenticating a user over NTLMSSP.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13861
Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This fixes "NTLMSSP NTLM2 packet check failed due to invalid signature!"
error messages, which were generated if the client only sends
NTLMSSP_NEGOTIATE_SIGN without NTLMSSP_NEGOTIATE_SEAL on an LDAP
connection.
This fixes a regession in the combination of commits
77adac8c3c and
3a0b835408.
We need to evaluate GENSEC_FEATURE_LDAP_STYLE at the end
of the authentication (as a server, while we already
do so at the beginning as a client).
As a reminder I introduced GENSEC_FEATURE_LDAP_STYLE
(as an internal flag) in order to let us work as a
Windows using NTLMSSP for LDAP. Even if only signing is
negotiated during the authentication the following PDUs
will still be encrypted if NTLMSSP is used. This is exactly the
same as if the client would have negotiated NTLMSSP_NEGOTIATE_SEAL.
I guess it's a bug in Windows, but we have to reimplement that
bug. Note this only applies to NTLMSSP and only to LDAP!
Signing only works fine for LDAP with Kerberos
or DCERPC and NTLMSSP.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=13427
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 May 16 03:26:03 CEST 2018 on sn-devel-144
This will be used to similate a Windows client only
using NTLMSSP_NEGOTIATE_SIGN without NTLMSSP_NEGOTIATE_SEAL
on an LDAP connection, which is indicated internally by
GENSEC_FEATURE_LDAP_STYLE.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=13427
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Mourik Jan C Heupink <heupink@merit.unu.edu>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We still use the sync ntlmssp_server_check_password().
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Some servers may not announce the NTLMSSP_NEGOTIATE_NTLM2
(a.k.a. NTLMSSP_NEGOTIATE_EXTENDED_SESSIONSECURITY) bit.
But if we're acting as a client using NTLMv2 we need to
enforce this flag, because it's not really a negotiationable
in that case.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12862
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
We move as must as possible into ntlmssp_server_{pre,post}auth().
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Mon Jun 26 13:07:30 CEST 2017 on sn-devel-144
We only create a temporary auth_usersupplied_info structure and pass it
down as const, lets keep the values on ntlmssp_state otherwise we may derefence
stale pointers.
We finally free the memory at the end of ntlmssp_server_postauth() now.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Currently only backend functions are sync functions, but that needs
to change in future.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The caller is expected always pass a valid context and this fallback
was needed ages ago.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Pass in the TALLOC_CTX * from the module init to remove
another talloc_autofree_context() use.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Not currently used - no logic changes inside.
This will make it possible to pass down a long-lived talloc
context from the loading function for modules to use instead
of having them internally all use talloc_autofree_context()
which is a hidden global.
Updated all known module interface numbers, and added a
WHATSNEW.
Signed-off-by: Jeremy Allison <jra@samba.org>
Signed-off-by: Ralph Böhme <slow@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sat Apr 22 01:17:00 CEST 2017 on sn-devel-144
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>
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 authentication log to indicate clearly how the password was
supplied to the server.
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 allows the GENSEC service description to be read at authentication time
for logging, eg that the user authenticated to the SAMR server
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>
So far this is only on the AD DC
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Pair-Programmed-by: Gary Lockyer <gary@catalyst.net.nz>
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
