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In hdb_samba4_audit(), ERR_GENERIC signals an unexpected situation — if
we encounter that error code while running under selftest, we’ll panic.
In response to an expected event such as the failure of
authsam_logon_success_accounting(), it’s more appropriate to continue to
run.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This condition was written backwards — if samba_kdc_fetch() returned
zero, we would ignore any error code returned by
sdb_entry_to_hdb_entry().
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Thu Aug 3 15:25:01 UTC 2023 on atb-devel-224
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
samba_kdc_check_s4u2proxy() is never going to return an SDB_* error
code, so these conditions can never be hit.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
NOTE: This commit finally works again!
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Such errors were not logged in the past, either, but that was accidental
— a result of failing too early for an authentication event to be set —
rather than the auditing being deliberately designed that way.
Now that we have added the KDC_AUTH_EVENT_CLIENT_FOUND event, we want to
ensure that PREAUTH_REQUIRED errors continue to go unlogged.
NOTE: THIS COMMIT WON’T COMPILE/WORK ON ITS OWN!
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This is important in order to prevent ACCOUNT_LOCKED_OUT
with cached credentials.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14054
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
All that uses the FAST cookie is the gss-preauth authentication
mechanism, which is untested in Samba, and disabled by default.
Disabling the FAST cookie code (and sending a dummy string instead)
relieves us of the maintenance and testing burden of this untested code.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Wed Jun 21 13:19:17 UTC 2023 on atb-devel-224
This makes it clearer that we are assigning a value to both together.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
If a client was authorized, we would ignore the Kerberos error code and
just log the return value of authsam_logon_success_accounting().
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
If an NTSTATUS code has been set in the KDC request structure, encode it
as KERB-ERROR-DATA and add it to the KDC reply.
hdb_samba4_set_ntstatus() adds the NTSTATUS code to the request
structure.
hdb_samba4_get_ntstatus() gets that status code back from the request
structure.
hdb_samba4_set_edata_from_ntstatus() encodes the status code and adds it
to the reply.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Our KDC plugin can use this to store NTSTATUS codes that can be added to
the final KDC reply later.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This now matches the return type of the function.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We dereference this pointer immediately after this call, so we should be
sure it is not NULL.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We pass the stack variable 'req' to dcerpc_winbind_SendToSam_r_send(),
so we need to make sure the runtime of the subreq in not longer
than the stack variable.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15253
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
If the account has been locked out in the meantime (indicated by
NT_STATUS_ACCOUNT_LOCKED_OUT), we should return the appropriate error
code.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14611
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
If we find that the user has been locked out sometime during the request
(due to a race), we will now return an error code.
Note that we cannot avoid the MIT KDC aspect of the issue by checking
the return status of mit_samba_zero_bad_password_count(), because
kdb_vftabl::audit_as_req() returning void means we cannot pass on the
result.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14611
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This simplifies the code for the following commit.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14611
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Mon Sep 12 03:27:55 UTC 2022 on sn-devel-184
This plugin is now only used by the kpasswd service. Thus, ensuring we
only look up the kadmin/changepw principal means we can't be fooled into
accepting tickets for other service principals. We make sure not to
specify a specific kvno, to ensure that we do not accept RODC-issued
tickets.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
We should avoid sdb_entry_ex, as it will be removed soon.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Accounts in the Protected Users group acting as clients lack support for
the RC4 encryption type. TGTs issued to such accounts have a lifetime
restricted to four hours, and are unable to be proxied or forwarded.
To determine at lookup time whether a client account is a member of
Protected Users, we now also create an auth_user_info_dc structure when
creating the database entry for an AS-REQ, rather than only when
creating a PAC for a TGT, or when recreating the PAC from an RODC-issued
TGT.
This means that the user's groups are now expanded even for AS-REQs that
result in an error (such as a PREAUTH_REQUIRED error), but this is
required to be able to correctly determine the account's available
encryption types, which are needed soon after fetching the user account.
Currently, the TGT lifetime may exceed four hours (for Heimdal
specifically). This may happen if PKINIT is used, and either the
pkinit_max_life_from_cert_extension option is TRUE and
pkinit_max_life_bound is greater than four hours, or
pkinit_max_life_from_cert is greater than four hours.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Otherwise useful information gets lost while converting
from NTSTATUS to krb5_error and back to NTSTATUS again.
E.g. NT_STATUS_ACCOUNT_DISABLED would be audited as
NT_STATUS_ACCOUNT_LOCKED_OUT.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15015
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Cases to handle KDC_AUTH_EVENT_VALIDATED_LONG_TERM_KEY and
KDC_AUTH_EVENT_PREAUTH_SUCCEEDED were removed in:
commit 791be84c3e
Author: Stefan Metzmacher <metze@samba.org>
Date: Wed Mar 2 10:10:08 2022 +1300
s4:kdc: hdb_samba4_audit() is only called once per request
Normally these auth event types are overwritten with the
KDC_AUTH_EVENT_CLIENT_AUTHORIZED event type, but if a client passes the
pre-authentication check, and happens to fail the client access check
(e.g. because the account is disabled), we get error messages of the
form:
hdb_samba4_audit: Unhandled hdb_auth_status=9 => INTERNAL_ERROR
To avoid such errors, use the error code provided in the request
structure to obtain a relevant status code in cases not handled
explicitly.
For unexpected values we return KRB5KRB_ERR_GENERIC
in order to hopefully prevent success. And within make test
we panic in order let a ci run fail.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15015
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The call to sdb_free_entry() was forgotten.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15000
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Fri Mar 11 11:05:55 UTC 2022 on sn-devel-184
mapped_state is completely irrelevant for audit logging and
will also 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>
The most important case is that we still have a previous
password cached at the RODC and the inbound replication
hasn't wiped the cache yet and we also haven't triggered
a new replication yet.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14865
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
So we need to restructure the logic a bit.
NOTE: This commit finally works again!
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14995
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Joseph Sutton <jsutton@samba.org>
Autobuild-Date(master): Tue Mar 1 23:28:22 UTC 2022 on sn-devel-184
This is to adapt to:
commit 6530021f09a5cab631be19a1b5898a0ba6b32f16
Author: Luke Howard <lukeh@padl.com>
Date: Thu Jan 13 14:37:29 2022 +1100
kdc: move auth event definitions into KDC header
Move KDC auth event macro definitions out of hdb.h and into a new KDC header,
kdc-audit.h.
NOTE: THIS COMMIT WON'T COMPILE/WORK ON ITS OWN!
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14995
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Rather than having a 'free_entry' member that can be called to free an
hdb_entry, we now implement the free function in HDB. We perform the
free only if the context pointer is non-NULL.
We also remove the ZERO_STRUCTP() in sdb_entry_to_hdb_entry(), as the
context pointer is now part of the 'hdb_entry' structure itself, and
this would undesirably zero it out.
This is an adaptation to Heimdal commits:
commit c5551775e204d00c7ee8055ab6ddbba7e0590584
Author: Luke Howard <lukeh@padl.com>
Date: Fri Jan 7 12:15:55 2022 +1100
hdb: decorate HDB_entry with context member
Decorate HDB_entry with context and move free_entry callback into HDB structure
itself. Requires updating hdb_free_entry() signature to include HDB parameter.
A follow-up commit will consolidate hdb_entry_ex (which has a single hdb_entry
member) into hdb_entry.
commit 0e8c4ccc6ee0123ea39e53e8917fc3f6bb74e8c8
Author: Luke Howard <lukeh@padl.com>
Date: Fri Jan 7 12:54:40 2022 +1100
hdb: eliminate hdb_entry_ex
Remove hdb_entry_ex and revert to the original design of hdb_entry (except with
an additional context member in hdb_entry which is managed by the free_entry
method in HDB).
NOTE: THIS COMMIT WON'T COMPILE/WORK ON ITS OWN!
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14995
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
