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Bug 1945656 - No gpo found and ad_gpo_implicit_deny set to True still permits user login [rhel-8.4.0.z]
Summary: No gpo found and ad_gpo_implicit_deny set to True still permits user login [r...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: sssd
Version: 8.3
Hardware: All
OS: Linux
unspecified
high
Target Milestone: beta
: ---
Assignee: Sumit Bose
QA Contact: Dan Lavu
URL:
Whiteboard: sync-to-jira
Depends On: 1944665
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-04-01 14:35 UTC by RHEL Program Management Team
Modified: 2021-08-18 09:12 UTC (History)
9 users (show)

Fixed In Version: sssd-2.4.0-9.el8_4.1
Doc Type: If docs needed, set a value
Doc Text:
Clone Of: 1944665
Environment:
Last Closed: 2021-06-29 16:29:08 UTC
Type: ---
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Comment 1 Alexey Tikhonov 2021-04-13 14:54:20 UTC 
Pushed PR: https://github.com/SSSD/sssd/pull/5562

* `master`
    * e865b008aa8947efca0116deb95e29cc2309256f - AD GPO: respect ad_gpo_implicit_deny if no GPO is present
Comment 4 Dan Lavu 2021-06-17 03:32:54 UTC 
Verified.

Followed the setup from https://bugzilla.redhat.com/show_bug.cgi?id=1944665 

[root@rhel84z ~]# rpm -qa | grep sssd-2
sssd-2.4.0-9.el8_4.1.x86_64


[root@rhel84z ~]# cat /etc/sssd/sssd.conf  

[sssd]
domains = domain.com
config_file_version = 2
services = nss, pam

[domain/domain.com]
ad_domain = domain.com
krb5_realm = DOMAIN.COM
realmd_tags = manages-system joined-with-adcli 
cache_credentials = True
id_provider = ad
krb5_store_password_if_offline = True
default_shell = /bin/bash
ldap_id_mapping = True
use_fully_qualified_names = True
fallback_homedir = /home/%u@%d
access_provider = ad
ad_gpo_implicit_deny = True
ad_gpo_access_control = enforcing

[root@rhel84z ~]# id administrator
uid=1353200500(administrator) gid=1353200513(domain users) groups=1353200513(domain users),1353200519(enterprise admins),1353200520(group policy creator owners),1353200512(domain admins),1353200572(denied rodc password replication group),1353200518(schema admins)

[root@rhel84z ~]# id regular_user
uid=1353201115(regular_user) gid=1353200513(domain users) groups=1353200513(domain users)


[root@rhel84z ~]# ssh allowed_user@localhost
The authenticity of host 'localhost (::1)' can't be established.
ECDSA key fingerprint is SHA256:Ily/WmERwfetPYkJV41lvMDH7gzogwimOoG2ay1sR8E.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added 'localhost' (ECDSA) to the list of known hosts.
allowed_user@localhost's password: 
Connection closed by ::1 port 22

[root@rhel84z ~]# ssh regular_user@localhost
regular_user@localhost's password: 
Connection closed by ::1 port 22
Comment 8 errata-xmlrpc 2021-06-29 16:29:08 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-2021:2571
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