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If an authentication policy enforces a maximum TGT lifetime for a
Protected User, that limit should stand in place of the four-hour limit
usually applied to Protected Users; we should nevertheless continue to
ensure that forwardable or proxiable tickets are not issued to such
users.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We should not have two unrelated classes both named SimpleKerberosTests.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=9612
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Wed Jul 19 02:41:25 UTC 2023 on atb-devel-224
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>
When PK-INIT is performed, check that the buffer is as expected and
contains the correct NT hash.
The PK-INIT tests now pass against Windows Server 2019.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14985
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 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>
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>
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>
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 shows us that the client’s access is checked prior to passwords
being checked.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
For each test, we check the authentication logs and ensure the messages
are as we expect.
We only test AS-REQs and TGS-REQs with the Heimdal KDC at the moment,
assuming that MIT doesn’t support logging for those cases.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
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
The cookie produced by Windows differs depending on whether FAST was
used.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@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>
These authentications are actually failing (due to RESPONSE_TOO_BIG
errors), but our authentication logging infrastructure hides this.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The ticket returned by kdc_request_get_ticket() is the main TGT
presented in a TGS-REQ. If we’re verifying a FAST armor ticket or a
user-to-user ticket, make sure we check the lifetime of that ticket
instead. To do this we need to pass the appropriate ticket into the
plugin function.
NOTE: This commit finally works again!
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Thu May 18 05:49:31 UTC 2023 on atb-devel-224
With the Heimdal KDC, we erroneously accept short-lived FAST and
user-to-user tickets.
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>
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Fri Mar 31 09:30:17 UTC 2023 on atb-devel-224
We now create a client claims blob and add it to the PAC.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This works as long as both tickets are issued by the same RODC.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
They have been made superfluous by newer declarative tests in
claims_tests.py and device_tests.py.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
These test the interaction between claims and groups in the PAC.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
These tests verify that the groups in the device info structure in the
PAC are exactly as expected under various scenarios.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Create a claim large enough to cause it to be compressed.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Windows erroneously shifts integer syntax claim values four bytes to the
right, resulting in incorrect values (if only one claim is present) or
corrupt claims data that cannot be unpacked (if other claims are
present). There's no reason to emulate such broken behaviour.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>