Commit Graph

34 Commits

Author SHA1 Message Date
Robbie Harwood
9f8700fcee
ipa-kdb: support KDB DAL version 7.0
krb5-1.16 includes DAL version 7, which changes the signature of
audit_as_req to include local and remote address parameters.

This patch just enables building against the new DAL version and bumps
the minimum in freeipa.spec.in, but doesn't use the new information
for anything.

Reviewed-By: Tomas Krizek <tkrizek@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
2017-10-26 12:46:44 +02:00
Thierry Bordaz
0f0423cf53 NULL LDAP context in call to ldap_search_ext_s during search
KDC crashes on quite random interval while trying to reach LDAP
    https://pagure.io/freeipa/issue/7017

Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
2017-07-24 13:34:06 +02:00
Sumit Bose
0ba0c07813 ipa-kdb: do not depend on certauth_plugin.h
Related to https://pagure.io/freeipa/issue/4905

Reviewed-By: Christian Heimes <cheimes@redhat.com>
2017-03-27 17:57:28 +02:00
Sumit Bose
c4156041fe IPA certauth plugin
This patch add a certauth plugin which allows the IPA server to support
PKINIT for certificates which do not include a special SAN extension
which contains a Kerberos principal but allow other mappings with the
help of SSSD's certmap library.

Related to https://pagure.io/freeipa/issue/4905

Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: David Kupka <dkupka@redhat.com>
2017-03-27 09:52:57 +02:00
Simo Sorce
2e5cc369fd Add support for searching policies in cn=accounts
Use the new multibase search to collect policies from multiple subtrees.
The 'any' parameter is set to 'true' so the search stop when the first result
is found in any of the bases.

https://fedorahosted.org/freeipa/ticket/6568

Signed-off-by: Simo Sorce <simo@redhat.com>
Reviewed-By: Martin Babinsky <mbabinsk@redhat.com>
2017-03-10 09:17:28 +01:00
Alexander Bokovoy
593ea7da9a ipa-kdb: support KDB DAL version 6.1
DAL version 6.0 removed support for a callback to free principal.
This broke KDB drivers which had complex e_data structure within
the principal structure. As result, FreeIPA KDB driver was leaking
memory with DAL version 6.0 (krb5 1.15).

DAL version 6.1 added a special callback for freeing e_data structure.
See details at krb5/krb5#596

Restructure KDB driver code to provide this callback in case
we are built against DAL version that supports it. For DAL version
prior to 6.0 use this callback in the free_principal callback to
tidy the code.

Use explicit KDB version dependency in Fedora 26+ via BuildRequires.

With new DAL version, freeipa package will fail to build and
we'll have to add a support for new DAL version explicitly.

https://fedorahosted.org/freeipa/ticket/6619

Reviewed-By: Simo Sorce <ssorce@redhat.com>
Reviewed-By: Robbie Harwood <rharwood@redhat.com>
2017-02-15 14:24:05 +01:00
Simo Sorce
2775042787 Support DAL version 5 and version 6
https://fedorahosted.org/freeipa/ticket/6466

Signed-off-by: Simo Sorce <simo@redhat.com>
Reviewed-By: Tomas Krizek <tkrizek@redhat.com>
Reviewed-By: Robbie Harwood <rharwood@redhat.com>
2016-11-10 13:25:51 +01:00
Simo Sorce
3e45c9be0a Allow admins to disable preauth for SPNs.
Some legacy softare is not able to properly cope with preauthentication,
allow the admins to disable the requirement to use preauthentication for
all Service Principal Names if they so desire. IPA Users are excluded,
for users, which use password of lessere entrpy, preauthentication is
always required by default.

This setting does NOT override explicit policies set on service principals
or in the global policy, it only affects the default.

Signed-off-by: Simo Sorce <simo@redhat.com>

Ticket: https://fedorahosted.org/freeipa/ticket/3860
Reviewed-By: Martin Babinsky <mbabinsk@redhat.com>
2016-03-08 18:48:40 +01:00
Martin Babinsky
4d7b630992 ipa-kdb: common function to get key encodings/salt types
This patch moves duplicate code in `ipadb_get_connection` to get default and
supported key encodings/salt types from Kerberos container to a common
function handling this task.

It is actually a small cosmetic enhancement of the fix of
https://fedorahosted.org/freeipa/ticket/4914

Reviewed-By: Martin Basti <mbasti@redhat.com>
2015-06-29 17:15:00 +02:00
Simo Sorce
d5b6c83601 Detect default encsalts kadmin password change
When kadmin tries to change a password it will get the allowed keysalts
from the password policy. Failure to provide them will result in kadmin
using the defaults specified in the kdc.conf file or hardcoded defaults
(the default salt is then of type NORMAL).

This patch provides the supported values that have been read out of the
appropriate LDAP attribute when we read the server configuration.

Then at actual password change, check if kadmin is handing us back the exact
list of supported encsalts we sent it, and in that case replace it with the
real default encsalts.

Fixes https://fedorahosted.org/freeipa/ticket/4914

Signed-off-by: Simo Sorce <simo@redhat.com>
Reviewed-by: Martin Babinsky <mbabinsk@redhat.com>
2015-05-27 09:45:56 -04:00
Simo Sorce
730b472db1 Avoid calling ldap functions without a context
We need to make sure we have a ld context before we can load the
configuration, otherwise ldap APIs will abort crashing the KDC.

If we have an issue connecting to LDAP the lcontext will be NULL, but
we are not checking that condition when we try to refresh the global
configuration.

https://fedorahosted.org/freeipa/ticket/4810

Signed-off-by: Simo Sorce <simo@redhat.com>
Reviewed-By: Martin Kosek <mkosek@redhat.com>
2015-01-08 11:55:25 +01:00
Nathaniel McCallum
8b2f4443dc Periodically refresh global ipa-kdb configuration
Before this patch, ipa-kdb would load global configuration on startup and
never update it. This means that if global configuration is changed, the
KDC never receives the new configuration until it is restarted.

This patch enables caching of the global configuration with a timeout of
60 seconds.

https://fedorahosted.org/freeipa/ticket/4153

Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
2014-06-19 14:50:32 +02:00
Nathaniel McCallum
fd55da9a27 ipa-kdb: validate that an OTP user has tokens
This handles the case where a user is configured for OTP in ipaUserAuthType,
but the user has not yet created any tokens. Until the user creates tokens,
the user should still be able to log in via password. This logic already
exists in LDAP, but ipa-kdb needs to perform the same validation to know
what data to return to the KDC.

https://fedorahosted.org/freeipa/ticket/4154

Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
2014-02-14 16:03:24 +01:00
Alexander Bokovoy
749111e6c2 KDC: implement transition check for trusted domains
When client principal requests for a ticket for a server principal
and we have to perform transition, check that all three belong to either
our domain or the domains we trust through forest trusts.

In case all three realms (client, transition, and server) match
trusted domains and our domain, issue permission to transition from client
realm to server realm.

Part of https://fedorahosted.org/freeipa/ticket/3909
2013-10-04 10:25:31 +02:00
Alexander Bokovoy
84b2269589 ipa-kdb: reinit mspac on HTTP TGT acquisition to aid trust-add case
When trust is established, we also create idrange for the trusted domain.
With FreeIPA 3.3 these ranges can have different types, and in order to
detect which one is to create, we need to do lookup at AD LDAP server.

Such lookup requires authenticated bind. We cannot bind as user because
IPA framework operates under constrained delegation using the user's
credentials and allowing HTTP/ipa.server@REALM to impersonate the user
against trusted domain's services would require two major things:

  - first, as we don't really know exact AD LDAP server names (any AD DC
    can be used), constrained delegation would have to be defined against
    a wild-card

  - second, constrained delegation requires that target principal exists
    in IPA LDAP as DN.

These two together limit use of user's ticket for the purpose of IPA
framework looking up AD LDAP.

Additionally, immediately after trust is established, issuing TGT with
MS-PAC to HTTP/ipa.server@REALM may fail due to the fact that KDB driver
did not yet refreshed its list of trusted domains -- we have limited
refresh rate of 60 seconds by default.

This patch makes possible to force re-initialization of trusted domains'
view in KDB driver if we are asked for TGT for HTTP/ipa.server@REALM.

We will need to improve refresh of trusted domains' view in KDB driver
in future to notice changes in cn=etc,$SUFFIX tree automatically.

This improvement is tracked in https://fedorahosted.org/freeipa/ticket/1302 and
https://fedorahosted.org/freeipa/ticket/3626

Part of https://fedorahosted.org/freeipa/ticket/3649
2013-07-23 16:24:29 +03:00
Alexander Bokovoy
67bcbab897 ipa-kdb: cache KDC hostname on startup
We need KDC hostname for several purposes:
- short-circuit detection of principals on the same server as KDC
- generating NetBIOS name

Make sure we cache hostname information on startup and use it
instead of detecting the hostname in run-time. This will miss the
case that KDC hostname got changed but such cases are not supported
anyway without restarting KDC and making changes to principals.
2013-07-23 16:24:24 +03:00
Nathaniel McCallum
5d51ae50a5 ipa-kdb: Add OTP support
If OTP is enabled for a user, then:
  1. Long-term keys are not provided to KDB
  2. The user string 'otp' is defined to KDB

Since it is not secure to send radius configuration information
over krb5 user strings, we simply set the string to a known default
('[]') which enables the default configuration in the KDC.

https://fedorahosted.org/freeipa/ticket/3561
http://freeipa.org/page/V3/OTP
2013-05-17 09:30:51 +02:00
Sumit Bose
d5216d5428 ipa-kdb: Read global defaul ipaKrbAuthzData
The ipaKrbAuthzData LDAP attribute is read from the ipaConfig object
and the read value(s) are stored in the ipadb context.

https://fedorahosted.org/freeipa/ticket/2960
2013-03-08 10:46:00 +01:00
sbose
3f8778890e ipa-kdb: Free talloc autofree context when module is closed
Currently kdb5kdc crashes on exit if the ipadb KDB modules is loaded and trusts
are configured. The reason is the talloc autofree context which get initialised
during the ndr_push_union_blob() call. On exit the KDC module is unloaded an
later on atexit() tries to free the context, but all related symbols are
already unloaded with the module.

This patch frees the talloc autofree context during the cleanup routine of the
module. Since this is called only at exit and not during normal operations this
is safe even if other KDC plugins use the talloc autofree context, e.g. via
some Samba libraries, as well.

Fixes https://fedorahosted.org/freeipa/ticket/3410
2013-02-14 10:11:26 +01:00
Martin Kosek
93ea8a6ac3 ipa-kdb: remove memory leaks
All known memory leaks caused by unfreed allocated memory or unfreed
LDAP results (which should be also done after unsuccessful searches)
are fixed.

https://fedorahosted.org/freeipa/ticket/3413
2013-02-14 10:09:48 +01:00
Simo Sorce
f602ad270d Add support for disabling KDC writes
Add two global ipaConfig options to disable undesirable writes that have
performance impact.
The "KDC:Disable Last Success" will disable writing back to ldap the last
successful AS Request time (successful kinit)
The "KDC:Disable Lockout" will disable completely writing back lockout
related data. This means lockout policies will stop working.

https://fedorahosted.org/freeipa/ticket/2734
2012-06-06 22:12:22 -04:00
Simo Sorce
9942a29cab policy: add function to check lockout policy
Fixes: https://fedorahosted.org/freeipa/ticket/2393
2012-02-19 20:43:45 -05:00
Simo Sorce
651f932473 ipa-kdb: add AS auditing support
Fixes: https://fedorahosted.org/freeipa/ticket/2334
2012-02-14 18:03:45 -05:00
Simo Sorce
10264c9ea9 ipa-kdb: Add delgation access control support 2011-12-08 17:18:10 -05:00
Simo Sorce
18537d55a7 Add support for generating PAC for AS requests for user principals 2011-11-07 14:25:07 -05:00
Simo Sorce
299c91df92 Fix CID 11019: Resource leak
https://fedorahosted.org/freeipa/ticket/2037
2011-11-07 11:13:55 -05:00
Simo Sorce
9f07404fe3 ipa-kdb: Fix memory leak 2011-11-03 09:51:30 -04:00
Simo Sorce
452fcdccdc ipa-kdb: implement change_pwd function 2011-08-26 08:24:49 -04:00
Simo Sorce
49c25dbdf5 ipa-kdb: implement function to retrieve password policies 2011-08-26 08:24:49 -04:00
Simo Sorce
0a4f7960b9 ipa-kdb: Get/Store Master Key directly from LDAP 2011-08-26 08:24:49 -04:00
Simo Sorce
abd424889b ipa-kdb: functions to get principal 2011-08-26 08:24:49 -04:00
Simo Sorce
b5ba0f7f48 ipa-kdb: implement get_time function 2011-08-26 08:24:49 -04:00
Simo Sorce
6e010fedaa ipa-kdb: initialize module functions
Initialize module also on ipadb_create invocation. This is what
kdb5_util expects.
2011-08-26 08:24:49 -04:00
Simo Sorce
bac6f2dd13 ipa-kdb: Initial plugin skeleton 2011-08-26 08:24:49 -04:00