Add support for configuring the attributes of new principals created via
httpkadmind. This can be done via virtual host-based service
namespaces, which will provide default attributes even if disabled (but
the created principals will not be disabled, naturally), or via
krb5.conf.
Since plugins no longer have a way of accessing the 'ek' member of the
request structure, this function provides a way for a plugin to add
encrypted padata to the response.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Honor the return code of _kdc_audit_request(), propagating if non-zero. Note
that this is principally intended to allow the audit plugin to return
HDB_ERR_NOT_FOUND_HERE, which influences whether the KDC sends an error reply
or not. If the audit plugin also wishes to rewrite r->error_code, it must do so
separately.
Closes: #964
_kdc_fast_check_armor_pac() already checks the PAC of the armor,
but it should also remember it if it's an TGS-REQ with explicit armor.
This will allow the kdc pac hooks to generate a compound identity PAC
with PAC_TYPE_DEVICE_INFO.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Closes: #967
Add libkdc wrappers for heimbase object accessors so plugins can use audit and
request attribute APIs without consuming libheimbase. Exposed API surface is
minimal and is limited to reading array collections, and reading/creating base
and custom types.
is_preauth (KFE_IS_PREAUTH is set) might require replying with
PA-ETYPE-INFO[2] which requires use of the long-term keys.
Without this change is_default_salt_p() can be called with 'key'
eq NULL.
Change-Id: I513fa768680225d4501d8b390e349a011666d90c
If 'local_realm' is true, must protect against failure
of krb5_get_default_realm() and krb5_principal_set_realm().
Otherwise, the wrong realm might be used.
Change-Id: Ib7a92559da1ac062c71228c5530106a13d836d53
Add an internal-use setter accessor for use by mssfu.c when principal names are
replaced. This also fixes a leak where r->client_princ was not freed before
being replaced with the impersonated client name.
As we move more and more state into astgs_request_t we need to be
careful not to leave locals and function arguments aliasing objects from
the astgs_request_t.
We weren't checking for errors, and we weren't using the convience
SEQUENCE OF add_METHOD_DATA() and add_ETYPE_INFO() functions generated
by the ASN.1 compiler. Using those utilities made get_pa_etype_info()
and make_etype_info_entry() sufficiently simpler that merging the two
makes for simpler, more readable code.
Build the entry to write to the log file in memory, the write it with
O_APPEND. This should make writes to the request log file safer in
multi-process KDC configurations.
Also, check results of krb5_store_*() functions (coverity alerted to
this).
We will use the kdc_ rather than krb5_kdc_ prefix for new public APIs exported
from libkdc. Amend the recently introduced
request_{get,set,copy,delete}_attribute APIs to conform.
If use_strongest_session_key and no keys are found the return
code will be set to KRB5KDC_ERR_ETYPE_NOSUPP. However, before
exiting if the principal is a weak exception then the return
code will be set to success and a NULL key pointer will be
dereferenced. Skip the weak exception check if the return
code is non-zero.
Change-Id: I36d0e1b179b3392171ad6767c75111d59c3f2f7d
Samba clients are often machine accounts with non-default salts that
will fail if they can't use the AES encryption type they know the KDC
supports. The problem is that arcfour-hmac-md5 has no salt so was
being used in preference.
Samba started to fail when
kdc_config->preauth_use_strongest_session_key = true;
was forced into the KDC configuration.
The history here is an attempt to avoid Kerberos v4 salts in des-cbc-crc
keys, but this instead broke Samba clients with AES-keys on machine accounts
as these have a non-default salt by default. These accounts were incorrectly
restricted to arcfour-hmac-md5 and they didn't like that.
A broader fix than Samba commit 8e1efd8bd3bf698dc0b6ed2081919f49b1412b53
REF: https://lists.samba.org/archive/samba/2021-October/237844.html
Samba BUG: https://bugzilla.samba.org/show_bug.cgi?id=14864
Change-Id: Ia8908a5a2eef107e6b133d7f0e4343c1988c18bb
