Commit Graph
28 Commits
Author SHA1 Message Date
Alexander Bokovoy e6f8d8bc9b ipasam: implement PASSDB getgrnam call
ipasam already implemented retrieval of groups for MS-SAMR calls.
However, it did not have implementation of a group retrieval for the
path of lookup_name() function in Samba. The lookup_name() is used in
many places in smbd and winbindd.

With this change it will be possible to resolve IPA groups in Windows UI
(Security tab) and console (net localgroup ...). When Global Catalog
service is enabled, it will be possible to search for those groups as
well.

In Active Directory, security groups can be domain, domain local, local
and so on. In IPA, only domain groups exposed through ipasam because
SID generation plugin only supports adding SIDs to POSIX groups and
users. Thus, non-POSIX groups are not going to have SIDs associated and
will not be visible in both UNIX and Windows environments.

Group retrieval in Samba is implemented as a mapping between NT and
POSIX groups. IPA doesn't have explicit mapping tables. Instead, any
POSIX group in IPA that has a SID associated with it is considered a
domain group for Samba.

Finally, additional ACI is required to ensure attributes looked up by
ipasam are always readable by the trust agents.

Fixes: https://pagure.io/freeipa/issue/8660
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
2021-01-22 12:21:33 -05:00
Alexander Bokovoy b5fbbd1957 Keytab retrieval: allow requesting arcfour-hmac for SMB services
With system-wide crypto policy in use, arcfour-hmac encryption type
might be removed from the list of permitted encryption types in the MIT
Kerberos library. Applications aren't prevented to use the arcfour-hmac
enctype if they operate on it directly.

Since FreeIPA supported and default encryption types stored in LDAP, on
the server side we don't directly use a set of permitted encryption
types provided by the MIT Kerberos library. However, this set will be
trimmed to disallow arcfour-hmac and other weaker types by default.

While the arcfour-hmac key can be generated and retrieved, MIT Kerberos
library will still not allow its use in Kerberos protocol if it is not
on the list of permitted encryption types. We only need this workaround
to allow setting up arcfour-hmac key for SMB services where arcfour-hmac
key is used to validate communication between a domain member and its
domain controller. Without this fix it will not be possible to request
setting up a machine account credential from the domain member side. The
latter is needed for Samba running on IPA client.

Thus, extend filtering facilities in ipa-pwd-extop plugin to explicitly
allow arcfour-hmac encryption type for SMB services (Kerberos principal
name starts with cifs/).

Reviewed-By: Christian Heimes <cheimes@redhat.com>
2019-05-28 09:55:51 +03:00
Alexander Bokovoy 120bab0d9c trust: allow trust agents to read POSIX identities of trust
SSSD and Samba on IPA masters need to be able to look up POSIX
attributes of trusted domain objects in order to allow Active Directory
domain controllers from trusted forests to connect to LSA and NETLOGON
pipes.

We only have access to read POSIX attributes in cn=accounts,$SUFFIX
subtree rather than whole $SUFFIX. Thus, add an ACI to trusts subtree.

Fixes: https://pagure.io/freeipa/issue/6077
Reviewed-By: Christian Heimes <cheimes@redhat.com>
2019-03-28 14:08:19 +01:00
Simo Sorce f9ed0b6ff8 Convert ipa-sam to use the new getkeytab control
Signed-off-by: Simo Sorce <simo@redhat.com>

Ticket: https://fedorahosted.org/freeipa/ticket/5495
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
2016-02-01 13:28:39 +01:00
Alexander Bokovoy 5025204175 trusts: add ACIs to allow AD trust agents to fetch cross-realm keytabs
Part of https://fedorahosted.org/freeipa/ticket/4959

Reviewed-By: Tomas Babej <tbabej@redhat.com>
2015-07-08 01:56:52 +02:00
Martin Basti 5783d0c832 Server Upgrade: remove CSV from upgrade files
CSV values are not supported in upgrade files anymore

Instead of

   add:attribute: 'first, part', second

please use

  add:attribute: firts, part
  add:attribute: second

Required for ticket: https://fedorahosted.org/freeipa/ticket/4984

Reviewed-By: Jan Cholasta <jcholast@redhat.com>
2015-05-11 16:08:01 +00:00
Martin Basti 2712b609cb Upgrade: fix trusts objectclass violationi
Execute updates in proper ordering.
Curently ldap-updater implementation doesnt allow better fix.

Ticket: https://fedorahosted.org/freeipa/ticket/4680
Reviewed-By: David Kupka <dkupka@redhat.com>
2014-11-13 13:31:17 +01:00
Tomas Babej b7a1401e9d trusts: Make cn=adtrust agents sysaccount nestedgroup
Since recent permissions work references this entry, we need to be
able to have memberOf attributes created on this entry. Hence we
need to include the nestedgroup objectclass.

https://fedorahosted.org/freeipa/ticket/4433

Reviewed-By: Jan Cholasta <jcholast@redhat.com>
2014-07-18 10:08:04 +02:00
Tomas Babej c2e6b74029 trusts: Allow reading system trust accounts by adtrust agents
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
2014-06-25 15:01:52 +02:00
Petr Viktorin 193ced0bd7 Remove the global anonymous read ACI
Also remove
- the deny ACIs that implemented exceptions to it:
  - no anonymous access to roles
  - no anonymous access to member information
  - no anonymous access to hbac
  - no anonymous access to sudo (2×)
- its updater plugin

Part of the work for: https://fedorahosted.org/freeipa/ticket/3566

Reviewed-By: Martin Kosek <mkosek@redhat.com>
2014-05-26 12:14:55 +02:00
Petr Viktorin 223e6dc3f7 aci-update: Trim the admin write blacklist
These attributes are removed from the blacklist, which means
high-level admins can now modify them:

- krbPrincipalAliases
- krbPrincipalType
- krbPwdPolicyReference
- krbTicketPolicyReference
- krbUPEnabled
- serverHostName

The intention is to only blacklist password attributes and attributes
that are managed by DS plugins.

Also, move the admin ACIs from ldif and trusts.update to aci.update.

Reviewed-By: Martin Kosek <mkosek@redhat.com>
2014-04-25 14:06:08 +02:00
Tomas Babej 3e1386a57e acl: Remove krbPrincipalExpiration from list of admin's excluded attrs
Since we're exposing the krbPrincipalExpiration attribute for direct
editing in the CLI, remove it from the list of attributes that
admin cannot edit by default.

Part of: https://fedorahosted.org/freeipa/ticket/3306
2014-01-14 15:22:27 +01:00
Petr Viktorin d9a1c09e7c Remove schema modifications from update files
As schema is now handled by the schema updater, these entries
are superfluous.

https://fedorahosted.org/freeipa/ticket/3454
2013-11-18 16:54:21 +01:00
Martin Kosek cdd2e9caff Do not add kadmin/changepw ACIs on new installs
These ACI were needed when FreeIPA had a custom ipa_kpasswd daemon,
now that a standard kadmin is used, ACIs are not needed anymore as
kadmin uses the same driver as the KDC.

The ACIs is not removed on upgrades to avoid breaking older
replicas which may still use FreeIPA version with the ipa_kpasswd
daemon.

https://fedorahosted.org/freeipa/ticket/3987
2013-10-25 15:26:51 +02:00
Alexander Bokovoy 9cf8ec79c9 ipa-sam: do not modify objectclass when trust object already created
When trust is established, last step done by IPA framework is to set
encryption types associated with the trust. This operation fails due
to ipa-sam attempting to modify object classes in trust object entry
which is not allowed by ACI.

Additionally, wrong handle was used by dcerpc.py code when executing
SetInformationTrustedDomain() against IPA smbd which prevented even to
reach the point where ipa-sam would be asked to modify the trust object.
2013-09-20 09:59:02 +02:00
Tomas Babej 75f0801324 Add nfs:NONE to default PAC types only when needed
We need to add nfs:NONE as a default PAC type only if there's no
other default PAC type for nfs. Adds a update plugin which
determines whether default PAC type for nfs is set and adds
nfs:NONE PAC type accordingly.

https://fedorahosted.org/freeipa/ticket/3555
2013-04-15 14:46:21 +02:00
Jan Cholasta 5f26d2c6db Add Kerberos ticket flags management to service and host plugins.
https://fedorahosted.org/freeipa/ticket/3329
2013-03-29 16:34:46 +01:00
Sumit Bose 2d90724a7e Add NFS specific default for authorization data type
Since the hardcoded default fpr the NFS service was removed the default
authorization data type is now set in the global server configuration.

https://fedorahosted.org/freeipa/ticket/2960
2013-03-08 10:46:00 +01:00
Martin Kosek 4a6f3cac29 Remove ORDERING for IA5 attributeTypes
IA5 string syntax does not have a compatible ORDERING matching rule.
Simply use default ORDERING for these attributeTypes as we already
do in other cases.

https://fedorahosted.org/freeipa/ticket/3398
2013-02-27 12:47:04 +01:00
Rob Crittenden 49beb8cd3a Add missing v3 schema on upgrades, fix typo in schema.
Add mising ipaExternalMember attribute and ipaExternalGroup objectclass.

Replacing mis-spelled ORDERING value on new install and upgrades.

https://fedorahosted.org/freeipa/ticket/3398
2013-02-22 13:30:59 +01:00
Martin Kosek d4d19ff423 Add SID blacklist attributes
Update our LDAP schema and add 2 new attributes for SID blacklist
definition. These new attributes can now be set per-trust with
trustconfig command.

https://fedorahosted.org/freeipa/ticket/3289
2013-02-12 10:37:34 +01:00
Alexander Bokovoy 0840b588d7 Add cifs principal to S4U2Proxy targets only when running ipa-adtrust-install
Since CIFS principal is generated by ipa-adtrust-install and is only
usable after setting CIFS configuration, there is no need to include it
into default setup.

This should fix upgrades from 2.2 to 3.0 where CIFS principal does not
exist by default.

https://fedorahosted.org/freeipa/ticket/3041
2012-10-09 18:15:01 -04:00
Alexander Bokovoy 155d1efd48 Add ACI to allow regenerating ipaNTHash from ipasam
ACI was lacking to allow actually writing MagicRegen into ipaNTHash attribute,

Part 2 of https://fedorahosted.org/freeipa/ticket/3016
2012-08-22 17:21:27 +03:00
Rob Crittenden fb817d3401 Add per-service option to store the types of PAC it supports
Create a per-service default as well.

https://fedorahosted.org/freeipa/ticket/2184
2012-08-01 16:15:51 +02:00
Martin Kosek 32ef4efaca Remove ipaNTHash from global allow ACI
ipaNTHash contains security sensitive information, it should be hidden just
like other password attributes. As a part of preparation for ticket #2511,
the ACI allowing global access is also updated to hide DNS zones.

https://fedorahosted.org/freeipa/ticket/2856
2012-06-26 21:28:25 +02:00
Sumit Bose b367c9ee7e Use exop instead of kadmin.local 2012-06-11 09:40:59 +02:00
Alexander Bokovoy bd0d858043 Add trust-related ACIs
A high-level description of the design and ACIs for trusts is available at
https://www.redhat.com/archives/freeipa-devel/2011-December/msg00224.html
and
https://www.redhat.com/archives/freeipa-devel/2011-December/msg00248.html

Ticket #1731
2012-06-07 09:39:10 +02:00
Alexander Bokovoy b32204fccc Add separate attribute to store trusted domain SID
We need two attributes in the ipaNTTrustedDomain objectclass to store different
kind of SID. Currently ipaNTSecurityIdentifier is used to store the Domain-SID
of the trusted domain. A second attribute is needed to store the SID for the
trusted domain user. Since it cannot be derived safely from other values and
since it does not make sense to create a separate object for the user a new
attribute is needed.

https://fedorahosted.org/freeipa/ticket/2191
2012-06-07 09:39:09 +02:00