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Some clients (e.g. an exchange server) check operatingSystemVersion
in order to check if a domain controller is new enough.
So we better use a value matching the dc functional level.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Some clients (e.g. an exchange server) check operatingSystemVersion
in order to check if a domain controller is new enough.
So we better use a value matching the dc functional level.
While we also fixed operatingSystem[Version] at provision time,
we do it also in dsdb_check_and_update_fl() in order to
handle old provisions and systems joined to an existing domain.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This is to adapt to Heimdal:
commit 3c4548025c0a239ff580e7974939185eadf1856b
Author: Nicolas Williams <nico@twosigma.com>
Date: Sun Jun 4 22:54:03 2023 -0500
hdb: Add auth-data-reqd flag
NOTE: This commit finally works again!
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
To run these tests standalone, you will need the certificate and private
key of the Certificate Authority. These can be specified together in the
same file with the environment variable CA_CERT, or the private key may
be specified in its own file with CA_PRIVATE_KEY.
If either of these files are encrypted, you can specify the password in
the environment variable CA_PASS.
These tests create a new certificate for the user account, signed with
the private key of the Certificate Authority. We negotiate the reply key
with either of the public-key and Diffie-Hellman PK-INIT variants, and
use the reply key to decrypt the enc-part in the response. We also check
that the KDC’s signatures are valid.
Most of the failures with the Heimdal KDC are due to the wrong nonce
being returned in the reply compared to Windows, which issue is simple
enough to correct.
An example command line for manual testing against Windows:
SMB_CONF_PATH=ad_dc.conf KRB5_CONFIG=krb5.conf SERVICE_USERNAME=win2k19-dc.example.com ADMIN_USERNAME=Administrator ADMIN_PASSWORD=locDCpass ADMIN_KVNO=1 FOR_USER=Administrator USERNAME=Administrator PASSWORD=locDCpass DC_SERVER=win2k19-dc.example.com SERVER=win2k19-dc.example.com DOMAIN=example REALM=example.com PYTHONPATH=bin/python STRICT_CHECKING=1 FAST_SUPPORT=1 CLAIMS_SUPPORT=1 COMPOUND_ID_SUPPORT=1 TKT_SIG_SUPPORT=1 FULL_SIG_SUPPORT=1 GNUTLS_PBKDF2_SUPPORT=1 EXPECT_PAC=1 EXPECT_EXTRA_PAC_BUFFERS=1 CHECK_CNAME=1 CHECK_PADATA=1 KADMIN_IS_TGS=0 FORCED_RC4=1 DEFAULT_ETYPES=36 CA_CERT=./win2k19-ca.pfx CA_PASS=1234 python3 python/samba/tests/krb5/pkinit_tests.py
To set up windows for this I first installed an Certificate Authority with an Enterprise CA.
Then I exported the private key and certificate of the CA:
1. go into the Certification Authority snap-in for the relevant computer,
2. right-clicking the CA
3. clicking ‘All Tasks’ → ‘Back up CA...’
4. and exporting the private key and CA certificate.
(I downloaded the resulting file via smbclient).
After setting up an Enterprise CA, I also needed to edit the domain
controller GPO to enable auto-enrollment, otherwise Windows would
refuse to accept as legitimate any certificates provided by the client.
That can be done by first enabling the policy:
‘Computer Configuration/Policies/Windows Settings/Security Settings/Public Key Policies/Certificate Services Client — Auto-Enrollment’,
and then ticking both ‘Renew expired certificates…’ and ‘Update certificates…’)
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This is important as Windows clients with KB5028166 seem to
call netr_LogonGetCapabilities with query_level=2 after
a call with query_level=1.
An unpatched Windows Server returns DCERPC_NCA_S_FAULT_INVALID_TAG
for query_level values other than 1.
While Samba tries to return NT_STATUS_NOT_SUPPORTED, but
later fails to marshall the response, which results
in DCERPC_FAULT_BAD_STUB_DATA instead.
Because we don't have any documentation for level 2 yet,
we just try to behave like an unpatched server and
generate DCERPC_NCA_S_FAULT_INVALID_TAG instead of
DCERPC_FAULT_BAD_STUB_DATA.
Which allows patched Windows clients to keep working
against a Samba DC.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15418
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The important change it that we expect DCERPC_NCA_S_FAULT_INVALID_TAG
for unsupported query_levels, we allow it to work with servers
with or without support for query_level=2.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15418
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
WACK packets use the ‘data’ member of the ‘nbt_rdata’ union, but they
claim to be a different type — NBT_QTYPE_NETBIOS — than would normally
be used with that union member. This means that if rr_type is equal to
NBT_QTYPE_NETBIOS, ndr_push_nbt_res_rec() has to guess which type the
structure really is by examining the data member. However, if the
structure is actually of a different type, that union member will not be
valid and accessing it will invoke undefined behaviour.
To fix this, eliminate all the guesswork and introduce a new type,
NBT_QTYPE_WACK, which can never appear on the wire, and which indicates
that although the ‘data’ union member should be used, the wire type is
actually NBT_QTYPE_NETBIOS.
This means that as far as NDR is concerned, the ‘netbios’ member of the
‘nbt_rdata’ union will consistently be used for all NBT_QTYPE_NETBIOS
structures; we shall no longer access the wrong member of the union.
Credit to OSS-Fuzz.
REF: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=38480
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15019
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Autobuild-User(master): Douglas Bagnall <dbagnall@samba.org>
Autobuild-Date(master): Fri Jul 7 01:14:06 UTC 2023 on atb-devel-224
Some log levels changed slightly because the macros don't cover all the
previously used levels.
Signed-off-by: Bjoern Jacke <bjacke@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This allows us to remove a lot of conditionally compiled code and so
know with more certainly that our tests are covering our code-paths.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
This removes a lot of inline #ifdef and means this feature is always tested.
We can do this as we have chosen GnuTLS 3.6.13 as the new minimum version.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
We log a warnings if access is not granted from a security descriptor in
msDS-AllowedToActOnBehalfOfOtherIdentity, so we should use the same log
level if msDS-AllowedToActOnBehalfOfOtherIdentity is not available at
all.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Tue Jun 27 06:39:08 UTC 2023 on atb-devel-224
This is consistent with the behaviour of the existing function
_authn_policy_access_check() and of Windows.
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>
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>
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): Mon Jun 26 12:11:30 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>
As we don't support the Claims Transformation Algorithm [MS-CTA]
we better clear claims as they have no valid meaning in our domain.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This is so that we can have them point to ‘null_data’ if we so choose.
We can’t assign the result of data_blob_talloc() to a const pointer, so
we go through an intermediary non-const pointer for the
device_claims_blob case.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
pac_blobs_add_blob() already checks whether the blob argument is NULL,
and skips adding the blob if so.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
For now we only pass in the krbtgt that verified the client pac
and optionally the krbtgt that verified the device pac.
These can be different depending on the domain of the related
principals.
If we want to apply SID filtering in future we may also need
to pass in the krbtgt that verified the delegated_proxy_pac,
but that needs more research and if not required for the
following changes.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@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>
For a constrained delegation request, we need to pass ‘delegated_proxy’
(and the delegated proxy PAC, if one was provided) into
samba_kdc_update_pac() so that we can verify that the delegating server
is allowed to authenticate to the target server.
The ‘const’ is entirely unnecessary in a function declaration, but we
add it just to be consistent.
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>
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>
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>
Commit 6bd3b4528d4b33c8f7ae6341d166bea3a06cd971 diverged the const
declarations in the header, this brings them back in alignnment as
is Samba's normal practice.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Mon Jun 26 00:26:37 UTC 2023 on atb-devel-224
We subsequently dereference the result without performing a NULL check.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
‘client->context’ is too long-lived to use for allocating short-term
data.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
A negative condition incurs more cognitive load.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This will help to reduce code duplication and the number of branching
code paths.
View with ‘git show -b’.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We may not always want this SID to be present. For example, to enforce
authentication policies as Windows does, we’ll want the client’s
security token without this SID.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Previously this function obtained the auth_user_info_dc structure, then
used it to update the PAC blob. Now it does only one thing: fetch the
auth_user_info_dc info and return it to the caller, who can then call
samba_get_logon_info_pac_blob().
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This gives it more control over the final Kerberos error code, so that
we won’t always get ERR_GENERIC.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This ensures that we always clean up resources.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The ‘const’ is entirely unnecessary in a function declaration, but we
add it just to be consistent.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
