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Bug 1784620

Summary:	Force LDAPS over 636 with AD Access Provider
Product:	Red Hat Enterprise Linux 7	Reporter:	Gaurav Swami <gswami>
Component:	sssd	Assignee:	SSSD Maintainers <sssd-maint>
Status:	CLOSED ERRATA	QA Contact:	sssd-qe <sssd-qe>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	7.8	CC:	afox, apeddire, asakure, cobrown, ddas, grajaiya, imran, jhrozek, lslebodn, mark.crossland, mkosek, mzidek, pbrezina, pdwyer, sbose, sgadekar, sgoveas, sssd-maint, tborcin, tscherf
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:	sync-to-jira
Fixed In Version:	sssd-1.16.4-36	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-03-31 19:44:37 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:

Comment 3 Sumit Bose 2019-12-18 07:29:19 UTC

Upstream ticket: https://pagure.io/SSSD/sssd/issue/4131

Pull-request: https://github.com/SSSD/sssd/pull/966

Comment 12 Pavel Březina 2020-01-14 10:07:12 UTC

* `master`
    * 24387e19f065e6a585b1120d5568cb4df271d102 - ad: set min and max ssf for ldaps
    * 78649907b81b4bdaf8fc6a6e6ae55ed3cd5419f5 - ldap: add new option ldap_sasl_maxssf
    * 341ba49b0deb42e17d535744824786c2499656b7 - ad: add ad_use_ldaps
    * 090cf77a0fd5f300a753667658af3ed763a88e83 - ad: allow booleans for ad_inherit_opts_if_needed()
* `sssd-1-16`
    * 9b875b87fda7dab1c92022b5c2e3b11cd5fffa4f - ad: set min and max ssf for ldaps
    * 07d19249a88d90135dce21e3d112caf70629ef02 - ldap: add new option ldap_sasl_maxssf
    * b2aca1f7d7aa4a11f86d977ad00481aeb1f9a436 - ad: add ad_use_ldaps
    * 44e76055d4413e56a33a90185161b6cfa4062d03 - ad: allow booleans for ad_inherit_opts_if_needed()

Comment 14 shridhar 2020-01-28 11:07:36 UTC

Tested with following data:

[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# rpm -q sssd 
sssd-1.16.4-37.el7.x86_64

-----------------
Before using certificates and without ad_use_ldaps option
-----------------
[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# cat /etc/sssd/sssd.conf 

[sssd]
domains = ad.baseos.qe
config_file_version = 2
services = nss, pam

[domain/ad.baseos.qe]
ad_domain = ad.baseos.qe
krb5_realm = AD.BASEOS.QE
realmd_tags = manages-system joined-with-samba 
cache_credentials = True
id_provider = ad
krb5_store_password_if_offline = True
default_shell = /bin/bash
ldap_sasl_authid = CI-VM-10-0-139-$
ldap_id_mapping = True
use_fully_qualified_names = False
fallback_homedir = /home/%u@%d
access_provider = ad
#ad_use_ldaps = True
#ldap_tls_cacert = /etc/openldap/certs/ad_cert.pem

[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# systemctl stop sssd ; rm -rf /var/lib/sss/db/* ; rm -rf /var/log/sssd/* ; systemctl start sssd 
[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# id administrator.qe
uid=1366200500(administrator) gid=1366200513(domain users) groups=1366200513(domain users),1366200512(domain admins),1366200519(enterprise admins),1366200520(group policy creator owners),1366200572(denied rodc password replication group),1366200518(schema admins)
[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# systemctl stop sssd ; rm -rf /var/lib/sss/db/* ; rm -rf /var/log/sssd/* ; systemctl start sssd 
[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# id administrator.qe
uid=1366200500(administrator) gid=1366200513(domain users) groups=1366200513(domain users),1366200512(domain admins),1366200519(enterprise admins),1366200520(group policy creator owners),1366200572(denied rodc password replication group),1366200518(schema admins)
tmp.Xo3HlLskm0]# egrep sdap_print_server /var/log/sssd/sssd_ad.baseos.qe.log 
(Tue Jan 28 06:01:10 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:389
(Tue Jan 28 06:01:10 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:389
(Tue Jan 28 06:01:12 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:389
(Tue Jan 28 06:01:12 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:389
(Tue Jan 28 06:01:12 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:389
(Tue Jan 28 06:01:12 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:389
(Tue Jan 28 06:01:12 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:389
(Tue Jan 28 06:01:12 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:389
(Tue Jan 28 06:01:12 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:389
(Tue Jan 28 06:01:12 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:389
(Tue Jan 28 06:01:13 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:389
(Tue Jan 28 06:01:13 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:3268
(Tue Jan 28 06:01:14 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:389
(Tue Jan 28 06:01:14 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:389
(Tue Jan 28 06:01:14 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:389


-----------------
Blocking port 389 with firewall rule
-----------------
[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# iptables -A OUTPUT -p tcp --destination-port 389 -j DROP
[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         
DROP       tcp  --  anywhere             anywhere             tcp dpt:ldap



[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# systemctl stop sssd ; rm -rf /var/lib/sss/db/* ; rm -rf /var/log/sssd/* ; systemctl start sssd 
[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# id administrator.qe
id: administrator.qe: no such user

-----------------
After configuring certificates and enabling ad_use_ldaps option
-----------------
[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# vim /etc/sssd/sssd.conf 
[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# systemctl stop sssd ; rm -rf /var/lib/sss/db/* ; rm -rf /var/log/sssd/* ; systemctl start sssd 
[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# cat /etc/sssd/sssd.conf 

[sssd]
domains = ad.baseos.qe
config_file_version = 2
services = nss, pam

[domain/ad.baseos.qe]
ad_domain = ad.baseos.qe
krb5_realm = AD.BASEOS.QE
realmd_tags = manages-system joined-with-samba 
cache_credentials = True
id_provider = ad
krb5_store_password_if_offline = True
default_shell = /bin/bash
ldap_sasl_authid = CI-VM-10-0-139-$
ldap_id_mapping = True
use_fully_qualified_names = False
fallback_homedir = /home/%u@%d
access_provider = ad
ad_use_ldaps = True
ldap_tls_cacert = /etc/openldap/certs/ad_cert.pem

[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# sleep 10

[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# id administrator.qe
uid=1366200500(administrator) gid=1366200513(domain users) groups=1366200513(domain users),1366200512(domain admins),1366200519(enterprise admins),1366200520(group policy creator owners),1366200572(denied rodc password replication group),1366200518(schema admins)

[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# systemctl stop sssd ; rm -rf /var/lib/sss/db/* ; rm -rf /var/log/sssd/* ; systemctl start sssd 
[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# egrep sdap_print_server /var/log/sssd/sssd_ad.baseos.qe.log 
(Tue Jan 28 05:57:56 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:636
(Tue Jan 28 05:57:57 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:636
(Tue Jan 28 05:57:58 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:636
(Tue Jan 28 05:57:58 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:636
(Tue Jan 28 05:57:58 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:636
(Tue Jan 28 05:57:58 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:636
(Tue Jan 28 05:57:58 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:636
(Tue Jan 28 05:57:58 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:636
(Tue Jan 28 05:57:58 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:636
(Tue Jan 28 05:57:59 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:636
(Tue Jan 28 05:57:59 2020) [sssd[be[ad.baseos.qe]]] [sdap_print_server] (0x2000): Searching 10.37.152.14:636
[root@ci-vm-10-0-139-117 tmp.Xo3HlLskm0]# systemctl stop sssd ; rm -rf /var/lib/sss/db/* ; rm -rf /var/log/sssd/* ; systemctl start sssd


Marking bz verified.

Comment 18 errata-xmlrpc 2020-03-31 19:44:37 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://access.redhat.com/errata/RHBA-2020:1053