Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 1103249

Summary: PAC responder needs much time to process large group lists
Product: Red Hat Enterprise Linux 7 Reporter: Jakub Hrozek <jhrozek>
Component: sssdAssignee: SSSD Maintainers <sssd-maint>
Status: CLOSED ERRATA QA Contact: Steeve Goveas <sgoveas>
Severity: unspecified Docs Contact:
Priority: medium    
Version: 7.0CC: ccoursey, grajaiya, jgalipea, jhrozek, jnansi, lslebodn, mkosek, mnavrati, mvarun, nsoman, parsonsa, pbrezina, sgoveas
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: sssd-1.14.0-0.2.beta1.el7 Doc Type: Bug Fix
Doc Text:
Under certain circumstances, the algorithm in the Privilege Attribute Certificate (PAC) responder component of the System Security Services Daemon (SSSD) does not effectively handle users who are members of a large number of groups. As a consequence, logging from Windows clients to Red Hat Enterprise Linux clients with Kerberos single sign-on (SSO) can be noticeably slow. There is currently no known workaround available.
 Story Points: ---
Clone Of: Environment:
Last Closed: 2016-11-04 07:10:37 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: 1172231, 1205926    
Attachments:
Description Flags
console output none

Description Jakub Hrozek 2014-05-30 14:25:02 UTC 
This bug is created as a clone of upstream ticket:
https://fedorahosted.org/sssd/ticket/2158

For example, when AD user is part of 500 groups
Comment 4 Jakub Hrozek 2016-02-22 21:19:00 UTC 
*** Bug 1205926 has been marked as a duplicate of this bug. ***
Comment 5 Jakub Hrozek 2016-04-13 09:15:33 UTC 
* d0d7de66c9494621c1bc12384e41e5e38a77fbeb
* c371993cce13edb9185a5f0db76fbee03f0edc04
* 1df6751f81f7d9c225463f76b9789b0cc7a0de8b
* aa0f39c7c09a55efc8d2282ca56e0e93e220aeba
* 63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4
* 28f336bdb32db0b89cb98174a3f8e308e4e928db
* 7cf0f78d832c7a09b59ee9f91cedc427c0253cd4
* cce3e8526176ce2fe9baa5bda1bb457b996b7bcf
Comment 7 Jatin Nansi 2016-08-12 03:12:34 UTC 
Hello Jakub,

We have a customer running RHEL-7.2 who might benefit from this fix, can we get a test package incorporating this fix?

Thank you,
Jatin
Comment 10 Varun Mylaraiah 2016-09-22 13:52:09 UTC 
Verified
ipa-client-4.4.0-7.el7.x86_64
sssd-1.14.0-15.el7.x86_64

Now response is much faster to process large group lists compare to 7.2(sssd-1.13.0-40.el7.x86_64) 
Please find the attached file which contains console output.

######## On 7.3 Client ###########

# service sssd stop; rm -rf /var/lib/sss/{db,mc}/*; service sssd start
Redirecting to /bin/systemctl stop  sssd.service
Redirecting to /bin/systemctl start  sssd.service

[root@host128 ~]# date; ssh -l aduser99 master72.testrelm.test
Thu Sep 22 19:10:14 IST 2016
Password: 
Last login: Thu Sep 22 19:05:13 2016 from dhcp35-128.lab.eng.blr.redhat.com
-sh-4.2$ logout
Connection to master72.testrelm.test closed.

[root@host128 ~]# date
Thu Sep 22 19:10:31 IST 2016

[root@host128 ~]# rpm -qa ipa-client sssd
ipa-client-4.4.0-7.el7.x86_64
sssd-1.14.0-15.el7.x86_64


######## On 7.2 Client ###########
root@client72 ~]# service sssd stop; rm -rf /var/lib/sss/{db,mc}/*; service sssd start
Redirecting to /bin/systemctl stop  sssd.service
Redirecting to /bin/systemctl start  sssd.service

[root@client72 ~]# date
Thu Sep 22 09:08:34 EDT 2016

[root@client72 ~]# ssh -l aduser99 master72.testrelm.test
Password: 
Last login: Thu Sep 22 16:55:47 2016 from auto-hv-01-guest06.idmqe.lab.eng.bos.redhat.com
-sh-4.2$ 
-sh-4.2$ logout
Connection to master72.testrelm.test closed.

[root@client72 ~]# date
Thu Sep 22 09:11:00 EDT 2016

[root@client72 ~]# rpm -qa ipa-client sssd
ipa-client-4.2.0-15.el7.x86_64
sssd-1.13.0-40.el7.x86_64
Comment 11 Varun Mylaraiah 2016-09-22 13:53:03 UTC 
Created attachment 1203769 [details]
console output
Comment 13 errata-xmlrpc 2016-11-04 07:10:37 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://rhn.redhat.com/errata/RHEA-2016-2476.html