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This is much clearer than doing it in sdb_free_entry() already.
It also simplifies the next cleanups.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
It seems we need to take a closer look at the
memory hierachy of the sdb_entry related code.
I'll check that during the next commits,
but for now just remove use the unused hook.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This is not related to the kvno of the key,
the mkvno tells the HDB layer that the keys need to
be decrypted with a master key (with the given [m]kvno).
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Even if the msDS-KeyVersionNumber of the main krbtgt
account if larger than 65535, we need to have
the 16 upper bits all zero in order to avoid
mixing the keys with an RODC.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14951
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>
The resulting user_info_dc is kept in the 'samba_kdc_entry' structure,
so it can be reused between calls.
This allows us to simplify samba_kdc_get_pac_blobs(), as it no longer
need to return a user_info_dc structure.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This fixes the rpc.samr test because we no longer specify an LM hash
to the DSDB layer only to have it rejected by password_hash.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
We no longer use the old NT and LM hash as proof of performing a
password change, and this removes the privileged status of these
attributes.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This returns the API for password changes via (eg) kpasswd to the
previous design as at 7eebcebbab8f62935bd1d5460e58b0a8f2cc30e8
where a control but no partiuclar values were specified.
This avoids the issues that were attempted to be addressed between
7eebcebbab8f62935bd1d5460e58b0a8f2cc30e8 and 786c41b0954b541518d1096019e1ce7ca11e5e98
by still keeping the ACL check from 23bd3a74176be4a1f8d6d70b148ababee397cf8c.
The purpose of this change is to move away from the NT hash (unicodePwd) being
the primary password in Samba, to allow installations to operate without this
unsalted hash.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
This is for MIT Kerberos >= 1.20.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
This is for MIT Kerberos <= 1.19
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
CID 1502873: Control flow issues (NO_EFFECT)
>>> This greater-than-or-equal-to-zero comparison of an unsigned value is always
true. "el->num_values >= 0U".
This is probably just a paranoia check as num_values should be set to at least
1 if the we have an LDAP entry.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
The ret variable is just used to set the error message for logging.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
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 791be84c3eecb95e03611458e2305bae272ba267
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>
NOTE: This commit finally works again!
This aligns us with the following Heimdal change:
commit 11d8a053f50c88256b4d49c7e482c2eb8f6bde33
Author: Stefan Metzmacher <metze@samba.org>
AuthorDate: Thu Feb 24 18:27:09 2022 +0100
Commit: Luke Howard <lukeh@padl.com>
CommitDate: Thu Mar 3 09:58:48 2022 +1100
kdc-plugin: also pass astgs_request_t to the pac related functions
This is more consistent and allows the pac hooks to be more flexible.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14865
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This just implements a call in the MIT KDB shim layer. It will be used in the
next commits in the KDB plugin.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Allow delegation to any target if we have delegations set up, but the target is
not specified.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Pair-Programmed-With: Alexander Bokovoy <ab@samba.org>
Signed-off-by: Alexander Bokovoy <ab@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This also addresses CVE-2020-17049.
MIT Kerberos 1.20 is in pre-release state at the time writing this commit. It
will be released in autumn 2022. We need to support MIT Kerberos 1.19 till
enough distributions have been released with MIT Kerberos 1.20.
Pair-Programmed-With: Robbie Harwood <rharwood@redhat.com>
Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Robbie Harwood <rharwood@redhat.com>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This needs to be set so that the MIT KDC >= 1.20 will not call the handle_pac()
function which executes the issue_pac KDB callback.
Pair-Programmed-With: Alexander Bokovoy <ab@samba.org>
Signed-off-by: Alexander Bokovoy <ab@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Stefan Metzmacher <metze@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>
We now have to use the accessor functions instead.
This is an adaptation to Heimdal:
commit ec24edf7005c340018450a202d27ca75fcf322d4
Author: Luke Howard <lukeh@padl.com>
Date: Thu Jan 20 09:15:24 2022 +1100
kdc: add accessor functions for KDC request structure
Add accessor functions for use by Samba and other plugin developers.
Documentation is in kdc/kdc-accessors.h.
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>
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>
This is an adaptation to Heimdal:
commit 40e4a4df09c2d6c3ba7bf14df1dee74a0bc18110
Author: Luke Howard <lukeh@padl.com>
Date: Mon Jan 10 12:50:37 2022 +1100
kdc: use astgs_request_t for client/server name (TGS)
Store the client and server principal name from the TGT and request
(respectively) in the astgs_request_t rather than using local variables.
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>
This is an adaptation to Heimdal:
commit 7cc4b7a9e624f5eecfbb38607d4cc0870a895671
Author: Luke Howard <lukeh@padl.com>
Date: Wed Jan 5 13:08:11 2022 +1100
kdc: KDC plugin API contract notes
Add some notes about the KDC plugin API contract, and require plugins to
explicitly indicate which version of the API they support (remove the macro
alias for the current version).
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>
This is an adaptation to Heimdal:
commit 06f8985c55fcd23e3efe0017ed2480c5b3c4524f
Author: Luke Howard <lukeh@padl.com>
Date: Wed Jan 5 09:42:03 2022 +1100
hdb: consolidate preauth audit event types
Instead of having distinct preauth success/failure events for different
mechanisms, have a single event; the mechanism can be disambiguated by querying
the HDB_REQUEST_KV_PA_NAME key.
Note: there is still an explicit event for long-term key-based success/failure
in order to help the backend implement lockout.
Audit failure (HDB_AUTH_EVENT_PREAUTH_FAILED) in the main preauth loop, rather
than in each mechanism. Success is still audited in the mechanism to allow
client pre-authentication success to be noted even if something subsequent
(e.g. encoding a reply, memory allocation) fails. The generic catch-all for
success remains.
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>
This is an adaptation to Heimdal:
commit fcff5933ade652343d7c169659da92fac0e6e0d4
Author: Luke Howard <lukeh@padl.com>
Date: Mon Jan 3 11:10:18 2022 +1100
kdc: rename windc to kdc plugin
Rename the "windc" plugin API to the more general "kdc" plugin API, for two
reasons: the Heimdal KDC uses the Windows PAC even when not emulating a domain
controller, and the plugin API has accreted methods that are not specific to
emulating a domain controller (such as referral_policy and finalize_reply).
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>
This is now used instead of a configuration option.
This is an adaption to Heimdal:
commit 3fa47f5a1a422e178d968a8ec0d59889eaa71548
Author: Luke Howard <lukeh@padl.com>
Date: Sun Jan 2 21:51:43 2022 +1100
kdc: add referral_policy callback to windc plugin
Add a referral policy hook to the TGS as a more elegant way of resolving
referral detection for Samba). The hook can either rewrite the server_princ in
the request, or it can return an error to disable built-in referral processing.
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>
