IF YOU WOULD LIKE TO GET AN ACCOUNT, please write an
email to Administrator. User accounts are meant only to access repo
and report issues and/or generate pull requests.
This is a purpose-specific Git hosting for
BaseALT
projects. Thank you for your understanding!
Только зарегистрированные пользователи имеют доступ к сервису!
Для получения аккаунта, обратитесь к администратору.
On interactive sessions we print the following instead now:
Try "help" do get a list of possible commands.
smb: >
The reason for this is that we don't get these information via SMB2
and the we only get the domain name via some layering violations
from the NTLMSSP state.
It's better to remove this consitently for all SMB and auth
protocol combinations.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
As the caller ("smbd_smb2_request_process_create()") already sets the callback,
the first time, it's not safe to reuse the tevent_req structure.
The typical 'tevent_req_nterror(); return tevent_req_post()' will
crash as the tevent_req_nterror() already triggered the former callback,
which calls smbd_smb2_create_recv(), were tevent_req_received() invalidates
the tevent_req structure, so that tevent_req_post() will crash.
We just remember the required values from the old state
and move them to the new state.
We tried to write reproducers for this, but sadly weren't able to trigger
the backtrace we had from a create a customer (using recent code)
with commit 6beba782f1
included. And this patch fixed the situation for the
customer.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12832
Pair-Programmed-With: Volker Lendecke <vl@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Here we check that we get 'REDACTED SECRET VALUES' printed, in order
to avoid regression on the non '-f' behavior.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12782
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
We use secrets_{prepare,failed,defer,finish}_password_change() to make
the process more robust.
Even if we just just verified the current password with the DC
it can still happen that the remote password change will fail.
If a server has the RefusePasswordChange=1 under
HKLM\SYSTEM\CurrentControlSet\Services\Netlogon\Parameters,
it will reject NetrServerPasswordSet2() with NT_STATUS_WRONG_PASSWORD.
This results in a successful local change, but a failing remote change,
which means the domain membership is broken (as we don't fallback to
the previous password for ntlmssp nor kerberos yet).
An (at least Samba) RODC will also reject a password change,
see https://bugzilla.samba.org/show_bug.cgi?id=12773.
Even with this change we still have open problems, e.g. if the password was
changed, but we didn't get the servers response. In order to fix that we need
to use only netlogon and lsa over unprotected transports, just using schannel
authentication (which supports the fallback to the old password).
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12782
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
We now store various hashed keys at change time and maintain a lot of details
that will help debugging failed password changes.
We keep storing the legacy values:
SECRETS/SID/
SECRETS/DOMGUID/
SECRETS/MACHINE_LAST_CHANGE_TIME/
SECRETS/MACHINE_PASSWORD/
SECRETS/MACHINE_PASSWORD.PREV/
SECRETS/SALTING_PRINCIPAL/DES/
This allows downgrades to older Samba versions.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12782
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
This blob will be store in secrets.tdb. It makes it possible to store much
more useful details about the workstation trust.
The key feature that that triggered this change is the ability
to store details for the next password change before doing
the remote change. This will allow us to recover from failures.
While being there I also thought about possible new features,
which we may implement in the near future.
We also store the raw UTF16 like cleartext buffer as well as derived
keys like the NTHASH (arcfour-hmac-md5 key) and other kerberos keys.
This will allow us to avoid recalculating the keys for an in memory
keytab in future.
I also added pointer to an optional lsa_ForestTrustInformation structure,
which might be useful to implement multi-tenancy in future.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12782
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Even in the case where only the password is known to the server, we should
try to leave a valid authentication behind.
We have better ways to indentify which password worked than only using
the current one.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12782
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
This way the caller can pass more than 2 hashes and can only
know which hash was used for a successful connection.
We allow up to 4 hashes (next, current, old, older).
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12782
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
We just want all values to be removed at the end, it doesn't matter
if they didn't existed before.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12782
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
secrets_delete_entry() fails if the key doesn't exist.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12782
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
These don't use any krb5_context related functions and they just
work on secrets.tdb, so they really belong to machine_account_secrets.c.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12782
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
The handling for per encryption type salts was removed in
Samba 3.0.23a (Jul 21, 2006). It's very unlikely that someone
has such an installation that got constantly upgraded over 10 years
with an automatic password change nor rejoin. It also means
that the KDC only has salt-less arcfour-hmac-md5 key together
with the salted des keys. So there would only be a problem
if the client whould try to use a des key to contact the smb server.
Having this legacy code adds quite some complexity for no
good reason.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12782
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
We should not store the secrets before we did all remote changes
(except the optional dns updates).
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12782
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
We should separate the calculation and the storing steps.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12782
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
