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Commit Graph

141 Commits

Author SHA1 Message Date
Andrew Bartlett
9ba5ebf4af kdc: Remove confusing duplicate open of sam.ldb to find RODC status
Instead, make this query after we open the DB in common with the MIT code.

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Jo Sutton <josutton@catalyst.net.nz>
2024-06-10 04:27:30 +00:00
Jo Sutton
048de3da01 s4:libnet: Pass SDB_F_ADMIN_DATA flag through to samba_kdc_message2entry()
This will allow us to specify whether to specify this flag for a keytab
export.

Signed-off-by: Jo Sutton <josutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2024-05-22 20:33:36 +00:00
Joseph Sutton
bea9958b60 s4:kdc: Call kdc_request_set_e_data() instead of kdc_set_e_data()
NOTE: This commit finally works again!

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-11-01 20:10:45 +00:00
Joseph Sutton
3759403554 s4:kdc: Use HDB flag constants instead of SDB ones
These flags are passed to us by Heimdal, and so they are HDB flags, not
SDB flags.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-19 21:37:36 +00:00
Joseph Sutton
4b19a707f2 s4:kdc: Use claims to evaluate RBCD conditions
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-12 23:13:32 +00:00
Joseph Sutton
f7064f6fd2 s4:kdc: Use device info to evaluate RBCD conditions
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-12 23:13:32 +00:00
Joseph Sutton
9b4dbaecfe s4:kdc: Pass claims and device info into samba_kdc_check_s4u2proxy_rbcd()
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-12 23:13:32 +00:00
Joseph Sutton
51d516cc2f s4:kdc: Rename ‘user_info_dc’ to ‘client_info’
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-12 23:13:32 +00:00
Joseph Sutton
310c537ffa s4:kdc: Call samba_kdc_get_user_info_dc() to get client information
Among other things, this function can deal with RODC‐issued PACs.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-12 23:13:32 +00:00
Joseph Sutton
b13701ac18 s4:kdc: Factor creation of user_info_dc out of samba_kdc_check_s4u2proxy_rbcd() into its callers
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-12 23:13:32 +00:00
Joseph Sutton
390be7d332 s4:kdc: Adapt interface to new Heimdal revision
NOTE: This commit finally works again!

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-12 23:13:32 +00:00
Joseph Sutton
c45a24cc41 s4:kdc: Initialize pointer to NULL
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-01 22:45:38 +00:00
Joseph Sutton
6b580f7368 s4:kdc: Do not panic if authsam_logon_success_accounting() fails
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>
2023-08-21 23:37:29 +00:00
Joseph Sutton
0f127875c8 s4:kdc: Correct error message
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-08-14 04:57:34 +00:00
Joseph Sutton
84929c6855 s4:kdc: Return an error code if sdb_entry_to_hdb_entry() fails
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>
2023-08-14 04:57:34 +00:00
Joseph Sutton
0182ddf97d s4:kdc: Use newer debugging macros
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-08-08 04:39:37 +00:00
Andreas Schneider
85c8222bdb s4:kdc: Fix code spelling
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
2023-08-03 15:25:01 +00:00
Joseph Sutton
34760dfc89 s4:kdc: Implement Heimdal hook for resource-based constrained delegation
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2023-06-27 05:45:36 +00:00
Joseph Sutton
0e43d11e39 s4:kdc: Remove useless sdb → hdb error code translation
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>
2023-06-27 05:45:36 +00:00
Joseph Sutton
7e76f36d91 s4:kdc: Initialize pointers with NULL
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2023-06-27 05:45:36 +00:00
Joseph Sutton
67436de3e7 s4:kdc: Handle new KDC_AUTH_EVENT_CLIENT_FOUND audit event
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>
2023-06-26 11:10:31 +00:00
Joseph Sutton
19f867bc54 s4:kdc: Ensure that we don’t log PREAUTH_REQUIRED errors
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>
2023-06-26 11:10:31 +00:00
Joseph Sutton
af95ec0b3f s4:kdc: Add functionality to log client and server authentication policies
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-06-25 23:29:33 +00:00
Joseph Sutton
ca9d27ae99 auth: Add functionality to log client and server policy information
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-06-25 23:29:32 +00:00
Stefan Metzmacher
370ba4ad52 s4:kdc: handle passwords from the history in hdb_samba4_auth_status()
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>
2023-06-24 06:25:35 +00:00
Joseph Sutton
ad98643fbd s4:kdc: Replace FAST cookie with dummy string
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
2023-06-21 13:19:17 +00:00
Joseph Sutton
63fe986357 s4:kdc: Log TGS-REQs in the Heimdal KDC
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-06-15 05:29:28 +00:00
Joseph Sutton
21d1f1ca99 s4:kdc: Fix typo
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-06-14 22:57:35 +00:00
Joseph Sutton
b859b3b67d s4:kdc: Consolidate assignments to r->error_code and final_ret
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>
2023-06-14 22:57:35 +00:00
Joseph Sutton
868e114660 s4:kdc: Don’t log authentication failures as successes
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>
2023-06-14 22:57:35 +00:00
Joseph Sutton
637fd961bd s4:kdc: Add NTSTATUS e-data to KDC reply
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>
2023-05-18 04:53:30 +00:00
Joseph Sutton
041f70055c s4:kdc: Add function to attach an NTSTATUS code to a Kerberos request structure
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>
2023-05-18 04:53:30 +00:00
Joseph Sutton
28cffae4b2 s4:kdc: Use more suitable type for final_ret
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>
2023-05-18 04:53:29 +00:00
Joseph Sutton
7266924b3d s4:kdc: Use talloc_get_type_abort()
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>
2023-05-18 04:53:29 +00:00
Joseph Sutton
798be592f9 s4:kdc: Fix debugging strings
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-05-18 01:03:37 +00:00
Joseph Sutton
12fd8274ff s4:kdc: Make use of KDC_REQUEST_KV_PA_NAME constant
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-05-18 01:03:37 +00:00
Stefan Metzmacher
44192d5f2c s4:kdc: make sure reset_bad_password_netlogon() stops subreq before return
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>
2022-11-24 11:01:37 +00:00
Stefan Metzmacher
1414269dcc CVE-2021-20251: s4:auth: fix use after free in authsam_logon_success_accounting()
This fixes a use after free problem introduced by
commit 7b8e32efc3,
which has msg = current; which means the lifetime
of the 'msg' memory is no longer in the scope of th
caller.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14611
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>
2022-11-24 11:01:37 +00:00
Joseph Sutton
bdfc9d96f8 CVE-2021-20251 s4:kdc: Check badPwdCount update return status
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>
2022-09-12 23:07:37 +00:00
Joseph Sutton
b1e740896e CVE-2021-20251 s4:kdc: Check return status of authsam_logon_success_accounting()
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>
2022-09-12 23:07:37 +00:00
Joseph Sutton
2b593c34c4 CVE-2021-20251 s4:kdc: Move logon success accounting code into existing branch
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>
2022-09-12 23:07:37 +00:00
Andreas Schneider
66289ab678 s4:kdc: Set Kerberos debug class for all KDC files
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
2022-09-12 03:27:55 +00:00
Joseph Sutton
484c6980be CVE-2022-32744 s4:kdc: Modify HDB plugin to only look up kpasswd principal
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>
2022-07-27 10:52:36 +00:00
Andrew Bartlett
2d9fd3855f s4:kdc: Pass supported enctypes to samba_kdc_set_fixed_keys()
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
2022-03-24 09:19:33 +00:00
Stefan Metzmacher
57bf975231 s4:kdc: avoid using sdb_entry_ex in hdb_samba4_{first,next}key()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2022-03-24 09:19:33 +00:00
Stefan Metzmacher
f917a20fce s4:kdc: avoid using sdb_entry_ex in hdb_samba4_fetch_kvno()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2022-03-24 09:19:33 +00:00
Stefan Metzmacher
14487c4027 s4:kdc: samba_kdc_{first,next}key() only need sdb_entry
sdb_entry_ex will be removed shortly.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2022-03-24 09:19:33 +00:00
Stefan Metzmacher
3cba1641fd s4:kdc: samba_kdc_fetch() only needs sdb_entry
sdb_entry_ex will be removed shortly.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2022-03-24 09:19:33 +00:00
Stefan Metzmacher
dceae1bb13 s4:kdc: use sdb_entry_to_hdb_entry() directly
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>
2022-03-24 09:19:33 +00:00
Stefan Metzmacher
a71b74b207 s4:kdc: hdb_samba4_fetch_fast_cookie() don't need sdb_entry_ex
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2022-03-24 09:19:33 +00:00