Bug 1883488

Summary: [RfE] Implement a new sssd.conf option to disable the filter for AD domain local groups from trusted domains
Product: Red Hat Enterprise Linux 8 Reporter: Alexey Tikhonov <atikhono>
Component: sssdAssignee: Sumit Bose <sbose>
Status: CLOSED ERRATA QA Contact: Dan Lavu <dlavu>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 8.3CC: dlavu, grajaiya, jhrozek, lslebodn, mzidek, pbrezina, sgoveas, tscherf
Target Milestone: rcKeywords: FutureFeature, Triaged
Target Release: ---Flags: pm-rhel: mirror+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: sync-to-jira qetodo
Fixed In Version: sssd-2.4.0-1.el8 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-05-18 15:03:57 UTC Type: Bug
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: 1881992    
Bug Blocks:    

Description Alexey Tikhonov 2020-09-29 11:19:54 UTC 
This bug was initially created as a copy of Bug #1756240

I am copying this bug because: to track fix for RHEL8



Description of problem:
Active Directory comes with different group types. The "Domain Local Group" type (0x00000004) is only valid in the same domain where the group was defined and not cross domain. SSSD enforces this limit since Red Hat Enterprise Linux 7.0 and sssd-1.11.2-18.el7. See 'Additional info' for more details reg the actual implementation.

There are some use-cases though where it would be helpful to disable the filter for domain local groups and make them available cross domain - even when this is against what Microsoft is proposing.

The ask here is to implement a new SSSD option that allows to disable the filter for domain local groups. The default should be that domain local groups are filtered (no change to current behavior) so that Administrators explicitly need to turn this option on to disable the filter.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

AD groups with domain-local scope should be filtered out for trusted domains
https://pagure.io/SSSD/sssd/issue/2178

AD: filter domain local groups for trusted/sub domains
https://pagure.io/SSSD/sssd/c/8280c5213094a72fcaa499dda2f8647246185d45

tokenGroups do not work reliable with Global Catalog
https://bugzilla.redhat.com/show_bug.cgi?id=1033096
Comment 3 Sumit Bose 2020-10-05 11:15:27 UTC 
Upstream ticket:
https://github.com/SSSD/sssd/issues/5346
Comment 4 Pavel Březina 2020-10-07 12:00:59 UTC 
Pushed PR: https://github.com/SSSD/sssd/pull/5347

* `master`
    * 4f65a8d15b8e5f3dd613e789d68f38e60e0addc5 - ad: add ad_allow_remote_domain_local_groups
Comment 9 Dan Lavu 2020-12-01 00:46:16 UTC 
Moving this to ITM5, the new multidomain setup is not cooperating.
Comment 12 Dan Lavu 2020-12-15 00:34:33 UTC 
Verified against sssd-2.4.0-2.el8.x86_64

Ran against automated tests, snips from the test execution. 

local group in the child domain is not discovered. 

2020-12-14 19:08:01,713 - sssd.testlib.common.qe_class.QeHost.hostname1.cmd41 - DEBUG - uid=1612601122(user1) gid=1612600513(domain users) groups=1612600513(domain users),1612601126(domain_group),1612601119(group1),1612601130(nested_group2),1612601131(nested_group3),1612601127(global_group),1612601121(group3),1612601120(group2),1612601129(nested_group1)
2020-12-14 19:08:01,715 - sssd.testlib.common.qe_class.QeHost.hostname1.cmd41 - DEBUG - Exit code: 0
2020-12-14 19:08:01,758 - sssd.testlib.common.qe_class.QeHost.hostname1.ParamikoTransport - INFO - RUN getent group child_domain_group.com
2020-12-14 19:08:01,758 - sssd.testlib.common.qe_class.QeHost.hostname1.cmd42 - DEBUG - RUN getent group child_domain_group.com
2020-12-14 19:08:01,883 - sssd.testlib.common.qe_class.QeHost.hostname1.cmd42 - DEBUG - Exit code: 2


Enabling the feature and searching for the same group, this time it is found.

2020-12-14 19:08:26,103 - sssd.testlib.common.qe_class.QeHost.hostname1.ParamikoTransport - INFO - RUN getent group domain_group.com
2020-12-14 19:08:26,103 - sssd.testlib.common.qe_class.QeHost.hostname1.cmd70 - DEBUG - RUN getent group domain_group.com
2020-12-14 19:08:26,163 - sssd.testlib.common.qe_class.QeHost.hostname1.cmd70 - DEBUG - domain_group.com:*:1159401111:
2020-12-14 19:08:26,164 - sssd.testlib.common.qe_class.QeHost.hostname1.cmd70 - DEBUG - Exit code: 0
2020-12-14 19:08:26,207 - sssd.testlib.common.qe_class.QeHost.hostname1.ParamikoTransport - INFO - RUN id child_user1.com
2020-12-14 19:08:26,207 - sssd.testlib.common.qe_class.QeHost.hostname1.cmd71 - DEBUG - RUN id child_user1.com
2020-12-14 19:08:26,249 - sssd.testlib.common.qe_class.QeHost.hostname1.cmd71 - DEBUG - uid=1159401108(child_user1.com) gid=1159401108(child_user1.com) groups=1159401108(child_user1.com),1159401112(child_domain_group.com),1159401105(child_group1.com),1159401116(child_nested_group2.com),1159401117(child_nested_group3.com),1159401115(child_nested_group1.com),1159401106(child_group2.com),1159401113(child_global_group.com),1159401107(child_group3.com),1159400513(domain users.com)
2020-12-14 19:08:26,251 - sssd.testlib.common.qe_class.QeHost.hostname1.cmd71 - DEBUG - Exit code: 0
Comment 14 errata-xmlrpc 2021-05-18 15:03:57 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 (sssd bug fix and enhancement update), 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://access.redhat.com/errata/RHBA-2021:1666