Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.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 2061795

Summary: Unable to lookup AD user if the AD group contains '@' symbol
Product: Red Hat Enterprise Linux 9 Reporter: Abhijit Roy <abroy>
Component: sssdAssignee: Tomas Halman <thalman>
Status: CLOSED ERRATA QA Contact: shridhar <sgadekar>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 9.0CC: atikhono, grajaiya, jhrozek, lslebodn, mzidek, pbrezina, sgadekar, thalman, tscherf
Target Milestone: rcKeywords: Triaged
Target Release: ---Flags: pm-rhel: mirror+
Hardware: All   
OS: All   
Whiteboard: sync-to-jira
Fixed In Version: sssd-2.7.1-2.el9 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2022-11-15 11:17:22 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:

Description Abhijit Roy 2022-03-08 14:55:58 UTC
Description of problem:

Unable to lookup AD user if the AD group contains '@' symbol

Workaround: Adding re_expression = (((?P<name>.+)@(?P<domain>[^@]+$))|(^(?P<name>[^@\\]+)$)) on the IPA server and client's /etc/sssd/sssd.conf

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

sssd version: sssd-2.4.0-9.el8_4.2.x86_64

How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

Comment 1 Alexey Tikhonov 2022-03-08 17:20:18 UTC
(In reply to Abhijit Roy from comment #0)
> Description of problem:
> 
> Unable to lookup AD user if the AD group contains '@' symbol
> 
> Workaround: Adding re_expression =
> (((?P<name>.+)@(?P<domain>[^@]+$))|(^(?P<name>[^@\\]+)$)) on the IPA server
> and client's /etc/sssd/sssd.conf

IIUC, this ^^ is not a "workaround" but a valid way to cater for this requirement. I.e. this is not a bug, but rather "by design"...

Comment 2 Abhijit Roy 2022-03-08 17:52:37 UTC
Thanks for your reply.


I thought '@' in group names, there were some issues some years ago but nowadays SSSD is able to handle '@' signs in group names. Which actually sssd does on IPA server and AD joined host but not on IPA client.

[root@-ad ~]# id alleysh
uid=974001325(alleysh) gid=974000513(domain users) groups=974000513(domain users),974001510(alok@testgroup),974001402(linux sudo),974001289(grp10),974001281(grp2),974001288(grp9)
[root@alok-ad ~]# client_loop: send disconnect: Broken pipe
abhijitroy@abroy-mac ~ % 

Feel free to close the bz if the 're_expression' is mandatory on the IPA client side.

Comment 3 Alexey Tikhonov 2022-03-10 14:39:15 UTC
Upstream PR: https://github.com/SSSD/sssd/pull/6044

Comment 11 Alexey Tikhonov 2022-03-23 11:50:44 UTC
Pushed PR: https://github.com/SSSD/sssd/pull/6044

* `master`
    * dde276e251ca0210757407b0013578d2e789bf60 - TESTS: New tests for IPA/AD re_expression default
    * c159f52995d211e0ccc72b918f441bd1497549f6 - usertools: move default re_expression definition
    * 0c0705e301886a5af5f0f9ed947d23e00851a104 - usertools: better default for IPA/AD re_expression

Comment 18 Alexey Tikhonov 2022-06-10 13:21:56 UTC
Additional PR: https://github.com/SSSD/sssd/pull/6205

Comment 19 Alexey Tikhonov 2022-06-13 10:22:07 UTC
Pushed PR: https://github.com/SSSD/sssd/pull/6205

* `master`
    * 9656516b9af2b3ea4627eab42f11c7667564020f - names: only check sub-domains for regex match
* `sssd-2-7`
    * 536dc9e4f72503942e659ca0dbd022d3dfac148f - names: only check sub-domains for regex match

Comment 23 errata-xmlrpc 2022-11-15 11:17:22 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-2022:8325