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Bug 1132540

Summary: [RFE] Expose service delegation rules CLI
Product: Red Hat Enterprise Linux 7 Reporter: Martin Kosek <mkosek>
Component: ipaAssignee: Martin Kosek <mkosek>
Status: CLOSED ERRATA QA Contact: Namita Soman <nsoman>
Severity: unspecified Docs Contact:
Priority: medium    
Version: 7.0CC: jcholast, mkosek, nkinder, rcritten, spoore
Target Milestone: rcKeywords: FutureFeature
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: ipa-4.2.0-0.1.alpha1.el7 Doc Type: Enhancement
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-11-19 12:00:57 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1181710    

Description Martin Kosek 2014-08-21 14:15:06 UTC 
This bug is created as a clone of upstream ticket:
https://fedorahosted.org/freeipa/ticket/3644

Currently by default we allow HTTP to get tickets for users for LDAP. KDC uses internal ACL mechanism that limits delegation. It is currently configured at the install time. We need to expose it in the CLI and UI so that it becomes possible to configure other services to acquire tickets on behalf of other services following policies defined in IPA. 

Also see #3642 and #3643
Comment 3 Jan Cholasta 2015-06-03 09:49:02 UTC 
Fixed upstream
master:
https://fedorahosted.org/freeipa/changeset/a92328452dced34d6d6df7ad6fe585563bb909f6
Comment 6 Scott Poore 2015-09-18 15:22:29 UTC 
Is this just a bug tracking the addition of the servicedelegation feature?

From a verification perspective I think we need to test that feature right?

Can someone confirm this is the intended feature?

http://www.freeipa.org/page/V4/Service_Constraint_Delegation

Thanks,
Scott
Comment 7 Scott Poore 2015-09-18 16:23:25 UTC 
Trying to go through the example here:

http://www.freeipa.org/page/V4/Service_Constraint_Delegation#How_to_Test

I'm having a problem with the kadmin.local modprinc command:

kadmin.local:  modprinc +ok_to_auth_as_delegate test/master.testrelm.test
modify_principal: Database record is incomplete or corrupted while getting "test/master.testrelm.test".

Is there another way to test this?
Comment 8 Jan Cholasta 2015-09-21 05:18:39 UTC 
Hi Scott,

I think

$ ipa service-mod test/ipa.example.com --ok-as-delegate=1

should work instead of kadmin.local.
Comment 9 Jan Cholasta 2015-09-21 05:59:52 UTC 
I misread the flag name - to set the ok_to_auth_as_delegate flag (not the ok_as_delegate flag), you need to run:

$ ipa service-mod test/master.testrelm.test --setattr krbticketflags=2097280
Comment 10 Scott Poore 2015-09-21 17:53:46 UTC 
Verified.

Version ::

ipa-server-4.2.0-11.el7.x86_64

Results ::


################ First show this fail because delegation not allowed #########

[root@master ~]# echo Secret123|kinit admin
Password for admin: 

[root@master ~]# ipa service-add test/$(hostname) --force
-------------------------------------------------------
Added service "test/master.testrelm.test"
-------------------------------------------------------
  Principal: test/master.testrelm.test
  Managed by: master.testrelm.test

[root@master ~]# ipa service-mod test/$(hostname) --setattr krbticketflags=2097280
----------------------------------------------------------
Modified service "test/master.testrelm.test"
----------------------------------------------------------
  Principal: test/master.testrelm.test
  Managed by: master.testrelm.test

[root@master ~]# ipa service-add test2/$(hostname) --force
--------------------------------------------------------
Added service "test2/master.testrelm.test"
--------------------------------------------------------
  Principal: test2/master.testrelm.test
  Managed by: master.testrelm.test

[root@master ~]# ipa-getkeytab -s master.testrelm.test -k /tmp/test.keytab -p test/$(hostname)
Keytab successfully retrieved and stored in: /tmp/test.keytab

[root@master ~]# ipa-getkeytab -s master.testrelm.test -k /tmp/test2.keytab -p test2/$(hostname)
Keytab successfully retrieved and stored in: /tmp/test2.keytab

[root@master ~]# kdestroy -A

[root@master ~]# kinit -kt /tmp/test.keytab test/$(hostname)

[root@master ~]# kvno -k /tmp/test.keytab -U admin -P test/$(hostname) test2/$(hostname)
test/master.testrelm.test: kvno = 2, keytab entry valid
test2/master.testrelm.test: kvno = 2, keytab entry valid
kvno: KDC returned error string: NOT_ALLOWED_TO_DELEGATE test2/master.testrelm.test: constrained delegation failed

############# Now showing servicedelegation allowing this to work #############
[root@master ~]# kdestroy -A

[root@master ~]# kinit admin
Password for admin: 

[root@master ~]# ipa servicedelegationrule-add test
------------------------------------
Added service delegation rule "test"
------------------------------------
  Delegation name: test

[root@master ~]# ipa servicedelegationtarget-add target-test
---------------------------------------------
Added service delegation target "target-test"
---------------------------------------------
  Delegation name: target-test

[root@master ~]# ipa servicedelegationrule-add-target --servicedelegationtargets=target-test test
  Delegation name: test
  Allowed Target: target-test
-------------------------
Number of members added 1
-------------------------

[root@master ~]# ipa servicedelegationrule-add-member --principals test/$(hostname) test
  Delegation name: test
  Allowed Target: target-test
  Member principals: test/master.testrelm.test
-------------------------
Number of members added 1
-------------------------

[root@master ~]# ipa servicedelegationtarget-add-member --principals=test2/$(hostname) target-test
  Delegation name: target-test
  Member principals: test2/master.testrelm.test
-------------------------
Number of members added 1
-------------------------

[root@master ~]# kdestroy -A

[root@master ~]# kinit -kt /tmp/test.keytab  test/$(hostname)

[root@master ~]# kvno -k /tmp/test.keytab -U admin -P test/$(hostname) test2/$(hostname)
test/master.testrelm.test: kvno = 2, keytab entry valid
test2/master.testrelm.test: kvno = 2, keytab entry valid

#####################################################################
[root@master ~]# kdestroy -A

[root@master ~]# kinit admin
Password for admin: 

[root@master ~]# ipa servicedelegationrule-find
----------------------------------
2 service delegation rules matched
----------------------------------
  Delegation name: ipa-http-delegation
  Allowed Target: ipa-ldap-delegation-targets, ipa-cifs-delegation-targets
  Member principals: HTTP/master.testrelm.test

  Delegation name: test
  Allowed Target: target-test
  Member principals: test/master.testrelm.test
----------------------------
Number of entries returned 2
----------------------------

[root@master ~]# ipa servicedelegationtarget-find
------------------------------------
3 service delegation targets matched
------------------------------------
  Delegation name: ipa-cifs-delegation-targets

  Delegation name: ipa-ldap-delegation-targets
  Member principals: ldap/master.testrelm.test

  Delegation name: target-test
  Member principals: test2/master.testrelm.test
----------------------------
Number of entries returned 3
----------------------------

[root@master ~]# ipa servicedelegationtarget-del target-test
-----------------------------------------------
Deleted service delegation target "target-test"
-----------------------------------------------
[root@master ~]# kdestroy -A

[root@master ~]# kinit -kt /tmp/test.keytab  test/$(hostname)

[root@master ~]# kvno -k /tmp/test.keytab -U admin -P test/$(hostname) test2/$(hostname)
test/master.testrelm.test: kvno = 2, keytab entry valid
test2/master.testrelm.test: kvno = 2, keytab entry valid
kvno: KDC returned error string: NOT_ALLOWED_TO_DELEGATE test2/master.testrelm.test: constrained delegation failed
Comment 11 Scott Poore 2015-09-21 18:13:40 UTC 
Ok, Also, this is only for CLI.  It's my understanding that the UI part of this will be handled separately via:  https://fedorahosted.org/freeipa/ticket/5044

As such, can we change the summary/name of this bug to reflect only CLI and not UI work to be done?

Thanks,
Scott
Comment 12 Martin Kosek 2015-09-24 07:23:55 UTC 
This is correct, good catch. I updated the summary of the bug.
Comment 13 errata-xmlrpc 2015-11-19 12:00:57 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2362.html