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Bug 1846003 - GDM password prompt when cert mapped to multiple users and promptusername is False
Summary: GDM password prompt when cert mapped to multiple users and promptusername is ...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: sssd
Version: 8.2
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Sumit Bose
QA Contact: sssd-qe
URL:
Whiteboard: sync-to-jira
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-06-10 14:52 UTC by Alexey Tikhonov
Modified: 2020-11-04 02:09 UTC (History)
9 users (show)

Fixed In Version: sssd-2.3.0-3.el8
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-11-04 02:05:29 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github SSSD sssd issues 5190 0 None closed GDM password prompt when cert mapped to multiple users and promptusername is False 2020-11-01 15:56:33 UTC
Red Hat Product Errata RHBA-2020:4569 0 None None None 2020-11-04 02:05:42 UTC

Description Alexey Tikhonov 2020-06-10 14:52:23 UTC 
This bug was initially created as a copy of Bug #1507683

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



Description of problem:

Smart Card login to GDM on IPA client with certificate mapped to multiple users is behaving unexpectedly when promptusername is set to False.  When I insert the card and GDM at login screen, it blanks.  Then it goes to a "Password" prompt.  There is no indication of which user this is for.  

Version-Release number of selected component (if applicable):
gdm-3.22.3-12.el7.x86_64
sssd-1.15.2-50.el7_4.6.x86_64
ipa-client-4.5.0-21.el7_4.2.2.x86_64


How reproducible:
always on my local test VMs.

Steps to Reproduce:
1. Setup IPA server and client with smart card cert mapped to two users

2. set promptusername to false

ipa certmapconfig-mod --promptusername=False
 
3. Connect smart card reader to client and insert card

Actual results:

password prompt

Expected results:

error message or simply return to user list login screen.

Additional info:
Comment 1 Alexey Tikhonov 2020-06-10 14:55:19 UTC 
* `master`
    * 3ed254765fc92e9cc9e4c35335818eaf1256e0d6 - pam_sss: special handling for gdm-smartcard
    * 26c794da31c215fef3e41429f6f13afdaf349bee - pam_sss: add SERVICE_IS_GDM_SMARTCARD
Comment 3 Pavel Březina 2020-06-24 14:18:17 UTC 
Additional commit:

Pushed PR: https://github.com/SSSD/sssd/pull/5212

* `master`
    * 31e57432537b9d248839159d83cfa9049faf192b - pam_sss: make sure old certificate data is removed before retry
Comment 6 Scott Poore 2020-08-07 17:31:41 UTC 
Verified.

Version::

sssd-client-2.3.0-6.el8.x86_64

Results ::


[root@rhel8-8 usercert]# ipa certmapconfig-mod --promptusername=False
  Prompt for the username: FALSE

[root@rhel8-8 usercert]# ipa certmap-match ipauser1.crt
---------------
2 users matched
---------------
  Domain: SMARTCARD.TEST
  User logins: ipauser1, ipauser2
----------------------------
Number of entries returned 1
----------------------------

[root@rhel8-8 usercert]# systemctl stop sssd; rm -rf /var/lib/sss/{db,mc}/*; systemctl start sssd

[root@rhel8-8 usercert]# systemctl restart gdm

Now remove card from reader before gdm restarts
Insert card when gdm comes up
GDM prompted for PIN
when I enter pin, I see the "Sorry, that didn't work.  Please try again".

This is expected behavior wth the patch.
Comment 9 errata-xmlrpc 2020-11-04 02:05:29 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-2020:4569
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