On Thu, 2022-06-02 at 13:33 +0200, Pavel Březina via FreeIPA-users
wrote:
> # SSSD 2.7.1
> 
> 
> ### Configuration changes
> 
> * New option `implicit_pac_responder` to control if the PAC responder
> is 
> started for the IPA and AD providers, default is `true`.
> * New option `krb5_check_pac` to control the PAC validation behavior.
> * multiple `crl_file` arguments can be used in the 
> `certificate_verification` option.

I updated my Fedora 36 desktop a few minutes ago, which installed the
new sssd and related packages. I rebooted since a new kernel was also
installed. When I tried to login to GNOME, I got an error.

I used a local account to get in and to check my freeipa user account.
The pwd worked fine on my other machines and on the web UI. I poked
around somemore and found this in krb5_child.log:

(2022-06-08  0:43:37): [krb5_child[9120]] [validate_tgt] (0x0020):
[RID#196] PAC check failed for principal [[email protected]].
(2022-06-08  0:43:37): [krb5_child[9120]] [get_and_save_tgt] (0x0020):
[RID#196] 2045: [1432158308][Unknown code UUz 100]
********************** PREVIOUS MESSAGE WAS TRIGGERED BY THE FOLLOWING
BACKTRACE:
   *  (2022-06-08  0:43:37): [krb5_child[9120]] [validate_tgt]
(0x0020): [RID#196] PAC check failed for principal [[email protected]].
   *  (2022-06-08  0:43:37): [krb5_child[9120]] [get_and_save_tgt]
(0x0020): [RID#196] 2045: [1432158308][Unknown code UUz 100]
********************** BACKTRACE DUMP ENDS HERE
*********************************

There's more before that.


I also saw this in sssd's journal (it's in reverse):

Jun 08 00:29:21 host.domain.tld krb5_child[2270952]: Preauthentication
failed
Jun 08 00:29:21 host.domain.tld krb5_child[2270952]: Preauthentication
failed
Jun 08 00:29:07 host.domain.tld krb5_child[2270889]: Preauthentication
failed
Jun 08 00:29:07 host.domain.tld krb5_child[2270889]: Preauthentication
failed
Jun 08 00:29:01 host.domain.tld krb5_child[2270848]: Unknown code UUz
100
Jun 08 00:28:52 host.domain.tld krb5_child[2270818]: Unknown code UUz
100
Jun 08 00:28:45 host.domain.tld krb5_child[2270782]: Unknown code UUz
100
Jun 08 00:15:15 host.domain.tld sssd_be[2249888]: GSSAPI client step 2
Jun 08 00:15:15 host.domain.tld sssd_be[2249888]: GSSAPI client step 1
Jun 08 00:15:15 host.domain.tld systemd[1]: Started sssd.service -
System Security Services Daemon.

No amount of reboots or sssd restarts fixed the problem, so I
downgraded all of the sssd related packages. After that was done, I was
able to login again.

Do I have a misconfiguration or is it a bug?

-- 
Ranbir
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