Hi, sure.
My auth files are based on this:
- https://wiki.archlinux.org/title/LDAP_authentication#PAM_Configuration_2
- and this: https://sssd.io/docs/ad/ad-provider-manual.html#id6

but sssd.io docs are based on Debian/Ubuntu common-auth so I had to
improvise...

passwd file:

password        include         system-auth

system-auth file:

auth      sufficient  pam_unix.so     try_first_pass nullok
auth      sufficient pam_sss.so forward_pass
auth      optional    pam_permit.so
auth      required    pam_env.so
auth      requisite    pam_deny.so

account   required    pam_unix.so
account   [default=bad success=ok user_unknown=ignore]  pam_sss.so
account   optional    pam_permit.so
account   required    pam_time.so

password  sufficient  pam_unix.so     try_first_pass nullok sha512 shadow
use_authtok
password  sufficient  pam_sss.so use_authtok
password  optional    pam_permit.so

session   required                                      pam_mkhomedir.so
skel=/etc/skel/ umask=0022
session   required    pam_limits.so
session   required    pam_unix.so
session   optional    pam_sss.so
session   optional    pam_permit.so


-----
Pawel




wt., 11 maj 2021 o 15:25 Sumit Bose <[email protected]> napisał(a):

> Am Tue, May 11, 2021 at 02:46:39PM +0200 schrieb Paweł Szafer:
> > Hi again,
> >
> > Last week I had to change my sssd.conf to ldap_sasl_mech=GSSAPI.
> > SSSD is 2.4.2 on Arch Linux.
> > Don't know if it is related but now I can't change password with this
> > machine (last time it was working in February).
> > Anyway passwd is asking me for current password and after typing it +
> Enter
> > it returning with message: Password changed.
>
> Hi,
>
> this is most probably an issue with the PAM configuration. Can you share
> /etc/pam.d/passwd? If it includes additional PAM configuration files,
> please send them as well.
>
> bye,
> Sumit
>
> >
> > Error which are most important (I think) is: authentication service
> cannot
> > retrieve user authentication to the client (bold below in Polish).
> >
> > What I see in logs:
> >
> > pam_sss:
> >
> > (2021-05-11 14:40:28): [pam] [pam_initgr_check_timeout] (0x2000): User
> > [test] found in PAM cache.
> > (2021-05-11 14:40:28): [pam] [pam_dp_send_req] (0x0100): Sending request
> > with the following data:
> > (2021-05-11 14:40:28): [pam] [pam_print_data] (0x0100): command:
> > SSS_PAM_CHAUTHTOK
> > (2021-05-11 14:40:28): [pam] [pam_print_data] (0x0100): domain:
> realm.domain
> > (2021-05-11 14:40:28): [pam] [pam_print_data] (0x0100): user:
> > [email protected]
> > (2021-05-11 14:40:28): [pam] [pam_print_data] (0x0100): service: passwd
> > (2021-05-11 14:40:28): [pam] [pam_print_data] (0x0100): tty: not set
> > (2021-05-11 14:40:28): [pam] [pam_print_data] (0x0100): ruser: not set
> > (2021-05-11 14:40:28): [pam] [pam_print_data] (0x0100): rhost: not set
> > (2021-05-11 14:40:28): [pam] [pam_print_data] (0x0100): authtok type: 1
> > (Password)
> > (2021-05-11 14:40:28): [pam] [pam_print_data] (0x0100): newauthtok type:
> 0
> > (No authentication token available)
> > (2021-05-11 14:40:28): [pam] [pam_print_data] (0x0100): priv: 0
> > (2021-05-11 14:40:28): [pam] [pam_print_data] (0x0100): cli_pid: 955753
> > (2021-05-11 14:40:28): [pam] [pam_print_data] (0x0100): logon name: test
> > (2021-05-11 14:40:28): [pam] [pam_print_data] (0x0100): flags: 4
> > (2021-05-11 14:40:28): [pam] [pam_dom_forwarder] (0x0100):
> pam_dp_send_req
> > returned 0
> > (2021-05-11 14:40:28): [pam] [sbus_dispatch] (0x4000): Dispatching.
> > (2021-05-11 14:40:28): [pam] [pam_dp_send_req_done] (0x0200): received:
> [15
> > (Usługa uwierzytelniania nie może uzyskać uwierzytelnienia
> > użytkownika)][realm.domain]
> > (2021-05-11 14:40:28): [pam] [ldb] (0x10000): Added timed event
> > "ldb_kv_callback": 0x56049f493ce0
> > *(2021-05-11 14:40:28): [pam] [pam_reply] (0x4000): pam_reply initially
> > called with result [15]: Usługa uwierzytelniania nie może uzyskać
> > uwierzytelnienia użytkownika. this result might be changed during
> > processing*
> > (2021-05-11 14:40:28): [pam] [filter_responses] (0x0100):
> > [pam_response_filter] not available, not fatal.
> > (2021-05-11 14:40:28): [pam] [pam_reply] (0x0200): blen: 35
> > *(2021-05-11 14:40:28): [pam] [pam_reply] (0x0200): Returning [15]:
> Usługa
> > uwierzytelniania nie może uzyskać uwierzytelnienia użytkownika to the
> > client*
> > (2021-05-11 14:40:28): [pam] [client_recv] (0x0200): Client disconnected!
> > (2021-05-11 14:40:28): [pam] [client_close_fn] (0x2000): Terminated
> client
> > [0x56049f489150][19]
> > (2021-05-11 14:40:33): [pam] [pam_initgr_cache_remove] (0x2000): [test]
> > removed from PAM initgroup cache
> >
> > krb5 logs
> >
> > (2021-05-11 14:40:28): [krb5_child[955777]] [main] (0x0400): krb5_child
> > started.
> > (2021-05-11 14:40:28): [krb5_child[955777]] [unpack_buffer] (0x1000):
> total
> > buffer size: [173]
> > (2021-05-11 14:40:28): [krb5_child[955777]] [unpack_buffer] (0x0100): cmd
> > [247 (password change checks)] uid [1175201116] gid [1175200513] validate
> > [true] enterprise principal [false] offline [false] UPN
> [[email protected]]
> > (2021-05-11 14:40:28): [krb5_child[955777]] [unpack_buffer] (0x0100):
> > ccname: [FILE:/tmp/krb5cc_1175201116_XXXXXX] old_ccname:
> > [FILE:/tmp/krb5cc_1175201116_GlkSJ1] keytab: [/etc/krb5.keytab]
> > (2021-05-11 14:40:28): [krb5_child[955777]] [check_use_fast] (0x0100):
> Not
> > using FAST.
> > (2021-05-11 14:40:28): [krb5_child[955777]] [switch_creds] (0x0200):
> Switch
> > user to [1175201116][1175200513].
> > (2021-05-11 14:40:28): [krb5_child[955777]] [switch_creds] (0x0200):
> Switch
> > user to [0][0].
> > (2021-05-11 14:40:28): [krb5_child[955777]] [k5c_check_old_ccache]
> > (0x4000): Ccache_file is [FILE:/tmp/krb5cc_1175201116_GlkSJ1] and is
> >  active and TGT is  valid.
> > (2021-05-11 14:40:28): [krb5_child[955777]] [privileged_krb5_setup]
> > (0x0080): Cannot open the PAC responder socket
> > (2021-05-11 14:40:28): [krb5_child[955777]] [become_user] (0x0200):
> Trying
> > to become user [1175201116][1175200513].
> > (2021-05-11 14:40:28): [krb5_child[955777]] [main] (0x2000): Running as
> > [1175201116][1175200513].
> > (2021-05-11 14:40:28): [krb5_child[955777]] [sss_child_set_krb5_tracing]
> > (0x0100): krb5 tracing is not available
> > (2021-05-11 14:40:28): [krb5_child[955777]] [set_lifetime_options]
> > (0x0100): No specific renewable lifetime requested.
> > (2021-05-11 14:40:28): [krb5_child[955777]] [set_lifetime_options]
> > (0x0100): No specific lifetime requested.
> > (2021-05-11 14:40:28): [krb5_child[955777]] [set_canonicalize_option]
> > (0x0100): Canonicalization is set to [true]
> > (2021-05-11 14:40:28): [krb5_child[955777]] [main] (0x0400): Will perform
> > password change checks
> > (2021-05-11 14:40:28): [krb5_child[955777]] [changepw_child] (0x1000):
> > Password change operation
> > (2021-05-11 14:40:28): [krb5_child[955777]] [changepw_child] (0x0400):
> > Attempting kinit for realm [REALM.DOMAIN]
> > (2021-05-11 14:40:28): [krb5_child[955777]] [sss_krb5_responder]
> (0x4000):
> > Got question [password].
> > (2021-05-11 14:40:28): [krb5_child[955777]] [changepw_child] (0x2000):
> > chpass is not using OTP
> > (2021-05-11 14:40:28): [krb5_child[955777]] [changepw_child] (0x1000):
> > Initial authentication for change password operation successful.
> > (2021-05-11 14:40:28): [krb5_child[955777]] [k5c_send_data] (0x0200):
> > Received error code 0
> > (2021-05-11 14:40:28): [krb5_child[955777]] [pack_response_packet]
> > (0x2000): response packet size: [4]
> > (2021-05-11 14:40:28): [krb5_child[955777]] [k5c_send_data] (0x4000):
> > Response sent.
> > (2021-05-11 14:40:28): [krb5_child[955777]] [main] (0x0400): krb5_child
> > completed successfully
> > (2021-05-11 14:40:28): [krb5_child[955786]] [main] (0x0400): krb5_child
> > started.
> > (2021-05-11 14:40:28): [krb5_child[955786]] [unpack_buffer] (0x1000):
> total
> > buffer size: [181]
> > (2021-05-11 14:40:28): [krb5_child[955786]] [unpack_buffer] (0x0100): cmd
> > [246 (password change)] uid [1175201116] gid [1175200513] validate [true]
> > enterprise principal [false] offline [false] UPN [[email protected]]
> > (2021-05-11 14:40:28): [krb5_child[955786]] [unpack_buffer] (0x0100):
> > ccname: [FILE:/tmp/krb5cc_1175201116_XXXXXX] old_ccname:
> > [FILE:/tmp/krb5cc_1175201116_GlkSJ1] keytab: [/etc/krb5.keytab]
> > (2021-05-11 14:40:28): [krb5_child[955786]] [check_use_fast] (0x0100):
> Not
> > using FAST.
> > (2021-05-11 14:40:28): [krb5_child[955786]] [switch_creds] (0x0200):
> Switch
> > user to [1175201116][1175200513].
> > (2021-05-11 14:40:28): [krb5_child[955786]] [switch_creds] (0x0200):
> Switch
> > user to [0][0].
> > (2021-05-11 14:40:28): [krb5_child[955786]] [k5c_check_old_ccache]
> > (0x4000): Ccache_file is [FILE:/tmp/krb5cc_1175201116_GlkSJ1] and is
> >  active and TGT is  valid.
> > (2021-05-11 14:40:28): [krb5_child[955786]] [privileged_krb5_setup]
> > (0x0080): Cannot open the PAC responder socket
> > (2021-05-11 14:40:28): [krb5_child[955786]] [become_user] (0x0200):
> Trying
> > to become user [1175201116][1175200513].
> > (2021-05-11 14:40:28): [krb5_child[955786]] [main] (0x2000): Running as
> > [1175201116][1175200513].
> > (2021-05-11 14:40:28): [krb5_child[955786]] [sss_child_set_krb5_tracing]
> > (0x0100): krb5 tracing is not available
> > (2021-05-11 14:40:28): [krb5_child[955786]] [set_lifetime_options]
> > (0x0100): No specific renewable lifetime requested.
> > (2021-05-11 14:40:28): [krb5_child[955786]] [set_lifetime_options]
> > (0x0100): No specific lifetime requested.
> > (2021-05-11 14:40:28): [krb5_child[955786]] [set_canonicalize_option]
> > (0x0100): Canonicalization is set to [true]
> > (2021-05-11 14:40:28): [krb5_child[955786]] [main] (0x0400): Will perform
> > password change
> > (2021-05-11 14:40:28): [krb5_child[955786]] [changepw_child] (0x1000):
> > Password change operation
> > (2021-05-11 14:40:28): [krb5_child[955786]] [changepw_child] (0x0400):
> > Attempting kinit for realm [REALM.DOMAIN]
> > (2021-05-11 14:40:28): [krb5_child[955786]] [sss_krb5_responder]
> (0x4000):
> > Got question [password].
> > (2021-05-11 14:40:28): [krb5_child[955786]] [changepw_child] (0x2000):
> > chpass is not using OTP
> > (2021-05-11 14:40:28): [krb5_child[955786]] [changepw_child] (0x0020):
> > Failed to fetch new password [2] No such file or directory.
> > (2021-05-11 14:40:28): [krb5_child[955786]] [k5c_send_data] (0x0200):
> > Received error code 1432158219
> > (2021-05-11 14:40:28): [krb5_child[955786]] [pack_response_packet]
> > (0x2000): response packet size: [4]
> > (2021-05-11 14:40:28): [krb5_child[955786]] [k5c_send_data] (0x4000):
> > Response sent.
> > (2021-05-11 14:40:28): [krb5_child[955786]] [main] (0x0400): krb5_child
> > completed successfully
> >
> > Thanks in advance for your help!
> >
> > -----
> > Best regards,
> > Pawel
>
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