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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:
I'm sorry, but we will not have the capacity to address this bug in 7.7, given that the work has not started and the devel freeze is in about three weeks. Therefore I'm moving the bug to 7.8.
Please push back if you think this bug is important to be fixed in 7.7.
Verified.
Version ::
sssd-1.16.5-10.el7.x86_64
Results ::
First make sure certificate on card maps to two users:
[root@rhel7-4 bugs]# ipa certmap-match ipauser1.crt
---------------
0 users matched
---------------
----------------------------
Number of entries returned 0
----------------------------
[root@rhel7-4 bugs]# ipa user-add-certmapdata ipauser1 --certificate=$(cat ipauser1.crt|sed '/CERT/d'|tr -d '\r\n')
---------------------------------------------
Added certificate mappings to user "ipauser1"
---------------------------------------------
User login: ipauser1
Certificate mapping data: X509:<I>O=EXAMPLE.COM,CN=Certificate Authority<S>O=EXAMPLE.COM,CN=ipauser1
[root@rhel7-4 bugs]# ipa user-add-certmapdata ipauser2 --certificate=$(cat ipauser1.crt|sed '/CERT/d'|tr -d '\r\n')
---------------------------------------------
Added certificate mappings to user "ipauser2"
---------------------------------------------
User login: ipauser2
Certificate mapping data: X509:<I>O=EXAMPLE.COM,CN=Certificate Authority<S>O=EXAMPLE.COM,CN=ipauser1
[root@rhel7-4 bugs]# ipa certmap-match ipauser1.crt
---------------
2 users matched
---------------
Domain: EXAMPLE.COM
User logins: ipauser1, ipauser2
----------------------------
Number of entries returned 1
----------------------------
[root@rhel7-4 bugs]# ipa certmapconfig-show
Prompt for the username: TRUE
[root@rhel7-4 bugs]# ipa certmapconfig-mod --promptusername=False
Prompt for the username: FALSE
Here I removed the card from reader
[root@rhel7-4 bugs]# systemctl stop sssd; rm -rf /var/lib/sss/{db,mc}/*; systemctl start sssd
[root@rhel7-4 bugs]# systemctl restart gdm
Now insert card
I see PIN prompt
enter PIN and it returns "Sorry, that didn't work. Please try again." and returns to PIN prompt as expected.
This is expected behavior with this fix.
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-2020:3904