SSSD rifiuta l'accesso LDAP con su: password errata

10

Ho impostato un server LDAP con account utente. Ho configurato correttamente un'applicazione Rails per l'autenticazione con questo server LDAP. Sto ora cercando di configurare SSSD per l'autenticazione con LDAP, ma non mi piacciono le password dei singoli utenti.

Errore:

$ su - leopetr4
Password:
su: incorrect password

SSSD riconosce l'utente, ma non la password:

$ id leopetr4
uid=9583(leopetr4) gid=9583(leopetr4) groups=9583(leopetr4)

Ecco come appare il record dell'utente:

# ldapsearch -x -W -D "cn=admin,dc=my_domain,dc=com"  -H ldaps://my_hostname.my_domain.com "(uid=leopetr4)"
Enter LDAP Password:
# extended LDIF
#
# LDAPv3
# base <dc=my_domain,dc=com> (default) with scope subtree
# filter: (uid=leopetr4)
# requesting: ALL
#

# leopetr4, People, my_domain.com
dn: uid=leopetr4,ou=People,dc=my_domain,dc=com
uid: leopetr4
cn: Leo Petr 40
sn: 40
objectClass: posixAccount
objectClass: top
objectClass: shadowAccount
objectClass: inetOrgPerson
shadowLastChange: 16736
shadowMin: 1
shadowMax: 99999
shadowWarning: 7
loginShell: /bin/bash
uidNumber: 9583
gidNumber: 9583
homeDirectory: /mnt/home/leopetr4
mail: leo.petr+40@example.com
gecos: Leo Petr 40
userPassword:: e1NIQX1vUk5PMWozMXdtdDVIVkVhZmNtNWYvU1Jmam89

# search result
search: 2
result: 0 Success

# numResponses: 2
# numEntries: 1

Ecco l'hash della password utente dopo la decodifica base64 sopra:

{SHA}oRNO1j31wmt5HVEafcm5f/SRfjo=

Corrisponde esattamente all'output di slappaswd -c {SHA} "that_password"

Ecco la configurazione SSSD:

# cat /etc/sssd/sssd.conf
[sssd]
config_file_version = 2
reconnection_retries = 3
sbus_timeout = 30
services = nss, pam
domains = LOCAL,LDAP
debug_level = 5

[nss]
filter_groups = root
filter_users = root
reconnection_retries = 3
entry_cache_timeout = 300
entry_cache_nowait_percentage = 75

[pam]
reconnection_retries = 3
offline_credentials_expiration = 2
offline_failed_login_attempts = 3
offline_failed_login_delay = 5

[domain/LDAP]
cache_credentials = true

id_provider = ldap
auth_provider = ldap

ldap_uri = ldaps://my_hostname.my_domain.com
ldap_search_base = dc=my_domain,dc=com
ldap_id_use_start_tls = true
ldap_tls_reqcert = never
ldap_tls_cacert = /etc/pki/tls/certs/ca-bundle.crt

debug_level = 5

Ecco i registri SSSD quando provo a su - leopetr4:

# tail -f /var/log/secure /var/log/sssd/*.log

==> /var/log/sssd/sssd_LDAP.log <==
(Mon Nov 30 12:32:10 2015) [sssd[be[LDAP]]] [be_get_account_info] (0x0200): Got request for [0x1001][1][name=leopetr4]
(Mon Nov 30 12:32:10 2015) [sssd[be[LDAP]]] [sdap_save_user] (0x0080): Failed to retrieve UUID [22][Invalid argument].
(Mon Nov 30 12:32:10 2015) [sssd[be[LDAP]]] [acctinfo_callback] (0x0100): Request processed. Returned 0,0,Success

==> /var/log/sssd/sssd.log <==
(Mon Nov 30 12:32:12 2015) [sssd] [service_send_ping] (0x0100): Pinging LDAP
(Mon Nov 30 12:32:12 2015) [sssd] [service_send_ping] (0x0100): Pinging nss
(Mon Nov 30 12:32:12 2015) [sssd] [service_send_ping] (0x0100): Pinging pam
(Mon Nov 30 12:32:12 2015) [sssd] [ping_check] (0x0100): Service LDAP replied to ping
(Mon Nov 30 12:32:12 2015) [sssd] [ping_check] (0x0100): Service nss replied to ping
(Mon Nov 30 12:32:12 2015) [sssd] [ping_check] (0x0100): Service pam replied to ping

==> /var/log/secure <==
Nov 30 12:32:12 my_domain su: pam_unix(su-l:auth): authentication failure; logname=root uid=1004 euid=0 tty=pts/3 ruser=leonsp rhost=  user=leopetr4

==> /var/log/sssd/sssd_LDAP.log <==
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [be_get_account_info] (0x0200): Got request for [0x3][1][name=leopetr4]
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [sdap_save_user] (0x0080): Failed to retrieve UUID [22][Invalid argument].
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [sdap_process_group_send] (0x0040): No Members. Done!
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [sdap_save_group] (0x0080): Failed to retrieve UUID [22][Invalid argument].
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [acctinfo_callback] (0x0100): Request processed. Returned 0,0,Success
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [be_pam_handler] (0x0100): Got request with the following data
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [pam_print_data] (0x0100): command: PAM_AUTHENTICATE
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [pam_print_data] (0x0100): domain: LDAP
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [pam_print_data] (0x0100): user: leopetr4
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [pam_print_data] (0x0100): service: su-l
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [pam_print_data] (0x0100): tty: pts/3
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [pam_print_data] (0x0100): ruser: leonsp
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [pam_print_data] (0x0100): rhost:
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [pam_print_data] (0x0100): authtok type: 0
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [pam_print_data] (0x0100): newauthtok type: 0
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [pam_print_data] (0x0100): priv: 0
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [pam_print_data] (0x0100): cli_pid: 1586655
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [pam_print_data] (0x0100): logon name: not set
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [be_pam_handler_callback] (0x0100): Backend returned: (0, 7, <NULL>) [Success]
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [be_pam_handler_callback] (0x0100): Sending result [7][LDAP]
(Mon Nov 30 12:32:12 2015) [sssd[be[LDAP]]] [be_pam_handler_callback] (0x0100): Sent result [7][LDAP]

==> /var/log/secure <==
Nov 30 12:32:12 my_domain su: pam_sss(su-l:auth): authentication failure; logname=root uid=1004 euid=0 tty=pts/3 ruser=leonsp rhost= user=leopetr4
Nov 30 12:32:12 my_domain su: pam_sss(su-l:auth): received for user leopetr4: 7 (Authentication failure)

Ecco il registro del server LDAP quando provo a su - leopetr4:

Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on 1 descriptor
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on:
Nov 27 21:21:08 my_hostname slapd[15353]:
Nov 27 21:21:08 my_hostname slapd[15353]: slap_listener_activate(9):
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=7 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=8 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=9 busy
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=10 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=11 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: >>> slap_listener(ldaps:///)
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: listen=9, new connection on 31
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: added 31r (active) listener=(nil)
Nov 27 21:21:08 my_hostname slapd[15353]: conn=3358 fd=31 ACCEPT from IP=256.256.256.256:29338 (IP=0.0.0.0:636)
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on 2 descriptors
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on:
Nov 27 21:21:08 my_hostname slapd[15353]:  31r
Nov 27 21:21:08 my_hostname slapd[15353]:
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: read active on 31
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=7 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=8 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=9 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=10 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=11 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: connection_get(31)
Nov 27 21:21:08 my_hostname slapd[15353]: connection_get(31): got connid=3358
Nov 27 21:21:08 my_hostname slapd[15353]: connection_read(31): checking for input on id=3358
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on 1 descriptor
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on:
Nov 27 21:21:08 my_hostname slapd[15353]:
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=7 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=8 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=9 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=10 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=11 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on 1 descriptor
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on:
Nov 27 21:21:08 my_hostname slapd[15353]:  31r
Nov 27 21:21:08 my_hostname slapd[15353]:
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: read active on 31
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=7 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=8 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=9 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=10 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=11 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: connection_get(31)
Nov 27 21:21:08 my_hostname slapd[15353]: connection_get(31): got connid=3358
Nov 27 21:21:08 my_hostname slapd[15353]: connection_read(31): checking for input on id=3358
Nov 27 21:21:08 my_hostname slapd[15353]: connection_read(31): unable to get TLS client DN, error=49 id=3358
Nov 27 21:21:08 my_hostname slapd[15353]: conn=3358 fd=31 TLS established tls_ssf=256 ssf=256
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on 1 descriptor
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on:
Nov 27 21:21:08 my_hostname slapd[15353]:
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=7 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=8 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=9 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=10 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=11 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on 1 descriptor
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on:
Nov 27 21:21:08 my_hostname slapd[15353]:  31r
Nov 27 21:21:08 my_hostname slapd[15353]:
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: read active on 31
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=7 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=8 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=9 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=10 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=11 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: connection_get(31)
Nov 27 21:21:08 my_hostname slapd[15353]: connection_get(31): got connid=3358
Nov 27 21:21:08 my_hostname slapd[15353]: connection_read(31): checking for input on id=3358
Nov 27 21:21:08 my_hostname slapd[15353]: op tag 0x77, time 1448680868
Nov 27 21:21:08 my_hostname slapd[15353]: conn=3358 op=0 do_extended
Nov 27 21:21:08 my_hostname slapd[15353]: conn=3358 op=0 EXT oid=1.3.6.1.4.1.1466.20037
Nov 27 21:21:08 my_hostname slapd[15353]: do_extended: oid=1.3.6.1.4.1.1466.20037
Nov 27 21:21:08 my_hostname slapd[15353]: conn=3358 op=0 STARTTLS
Nov 27 21:21:08 my_hostname slapd[15353]: send_ldap_extended: err=1 oid= len=0
Nov 27 21:21:08 my_hostname slapd[15353]: send_ldap_response: msgid=1 tag=120 err=1
Nov 27 21:21:08 my_hostname slapd[15353]: conn=3358 op=0 RESULT oid= err=1 text=TLS already started
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on 1 descriptor
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on:
Nov 27 21:21:08 my_hostname slapd[15353]:
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=7 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=8 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=9 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=10 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=11 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on 1 descriptor
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on:
Nov 27 21:21:08 my_hostname slapd[15353]:  31r
Nov 27 21:21:08 my_hostname slapd[15353]:
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: read active on 31
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=7 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=8 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=9 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=10 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=11 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: connection_get(31)
Nov 27 21:21:08 my_hostname slapd[15353]: connection_get(31): got connid=3358
Nov 27 21:21:08 my_hostname slapd[15353]: connection_read(31): checking for input on id=3358
Nov 27 21:21:08 my_hostname slapd[15353]: op tag 0x42, time 1448680868
Nov 27 21:21:08 my_hostname slapd[15353]: ber_get_next on fd 31 failed errno=0 (Success)
Nov 27 21:21:08 my_hostname slapd[15353]: connection_read(31): input error=-2 id=3358, closing.
Nov 27 21:21:08 my_hostname slapd[15353]: connection_closing: readying conn=3358 sd=31 for close
Nov 27 21:21:08 my_hostname slapd[15353]: connection_close: deferring conn=3358 sd=31
Nov 27 21:21:08 my_hostname slapd[15353]: conn=3358 op=1 do_unbind
Nov 27 21:21:08 my_hostname slapd[15353]: conn=3358 op=1 UNBIND
Nov 27 21:21:08 my_hostname slapd[15353]: connection_resched: attempting closing conn=3358 sd=31
Nov 27 21:21:08 my_hostname slapd[15353]: connection_close: conn=3358 sd=31
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: removing 31
Nov 27 21:21:08 my_hostname slapd[15353]: conn=3358 fd=31 closed
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on 1 descriptor
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: activity on:
Nov 27 21:21:08 my_hostname slapd[15353]:
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=7 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=8 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=9 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=10 active_threads=0 tvp=NULL
Nov 27 21:21:08 my_hostname slapd[15353]: daemon: epoll: listen=11 active_threads=0 tvp=NULL
Nov 27 21:21:09 my_hostname slapd[15353]: daemon: activity on 1 descriptor
Nov 27 21:21:09 my_hostname slapd[15353]: daemon: activity on:
Nov 27 21:21:09 my_hostname slapd[15353]:  26r
Nov 27 21:21:09 my_hostname slapd[15353]:
Nov 27 21:21:09 my_hostname slapd[15353]: daemon: read active on 26
Nov 27 21:21:09 my_hostname slapd[15353]: daemon: epoll: listen=7 active_threads=0 tvp=NULL
Nov 27 21:21:09 my_hostname slapd[15353]: daemon: epoll: listen=8 active_threads=0 tvp=NULL
Nov 27 21:21:09 my_hostname slapd[15353]: daemon: epoll: listen=9 active_threads=0 tvp=NULL
Nov 27 21:21:09 my_hostname slapd[15353]: daemon: epoll: listen=10 active_threads=0 tvp=NULL
Nov 27 21:21:09 my_hostname slapd[15353]: daemon: epoll: listen=11 active_threads=0 tvp=NULL
Nov 27 21:21:09 my_hostname slapd[15353]: connection_get(26)
Nov 27 21:21:09 my_hostname slapd[15353]: connection_get(26): got connid=3331
Nov 27 21:21:09 my_hostname slapd[15353]: connection_read(26): checking for input on id=3331
Nov 27 21:21:09 my_hostname slapd[15353]: op tag 0x63, time 1448680869
Nov 27 21:21:09 my_hostname slapd[15353]: conn=3331 op=122 do_search
Nov 27 21:21:09 my_hostname slapd[15353]: >>> dnPrettyNormal: <dc=my_domain,dc=com>
Nov 27 21:21:09 my_hostname slapd[15353]: <<< dnPrettyNormal: <dc=my_domain,dc=com>, <dc=my_domain,dc=com>
Nov 27 21:21:09 my_hostname slapd[15353]: SRCH "dc=my_domain,dc=com" 2 0
Nov 27 21:21:09 my_hostname slapd[15353]:     0 0 0
Nov 27 21:21:09 my_hostname slapd[15353]: begin get_filter
Nov 27 21:21:09 my_hostname slapd[15353]: AND
Nov 27 21:21:09 my_hostname slapd[15353]: begin get_filter_list
Nov 27 21:21:09 my_hostname slapd[15353]: begin get_filter
Nov 27 21:21:09 my_hostname slapd[15353]: EQUALITY
Nov 27 21:21:09 my_hostname slapd[15353]: end get_filter 0
Nov 27 21:21:09 my_hostname slapd[15353]: begin get_filter
Nov 27 21:21:09 my_hostname slapd[15353]: EQUALITY
Nov 27 21:21:09 my_hostname slapd[15353]: end get_filter 0
Nov 27 21:21:09 my_hostname slapd[15353]: begin get_filter
Nov 27 21:21:09 my_hostname slapd[15353]: AND
Nov 27 21:21:09 my_hostname slapd[15353]: begin get_filter_list
Nov 27 21:21:09 my_hostname slapd[15353]: begin get_filter
Nov 27 21:21:09 my_hostname slapd[15353]: PRESENT
Nov 27 21:21:09 my_hostname slapd[15353]: end get_filter 0
Nov 27 21:21:09 my_hostname slapd[15353]: begin get_filter
Nov 27 21:21:09 my_hostname slapd[15353]: NOT
Nov 27 21:21:09 my_hostname slapd[15353]: begin get_filter
Nov 27 21:21:09 my_hostname slapd[15353]: EQUALITY
Nov 27 21:21:09 my_hostname slapd[15353]: end get_filter 0
Nov 27 21:21:09 my_hostname slapd[15353]: end get_filter 0
Nov 27 21:21:09 my_hostname slapd[15353]: end get_filter_list
Nov 27 21:21:09 my_hostname slapd[15353]: end get_filter 0
Nov 27 21:21:09 my_hostname slapd[15353]: end get_filter_list
Nov 27 21:21:09 my_hostname slapd[15353]: end get_filter 0
Nov 27 21:21:09 my_hostname slapd[15353]:     filter: (&(uid=leopetr4)(objectClass=posixAccount)(&(uidNumber=*)(!(uidNumber=0))))
Nov 27 21:21:09 my_hostname slapd[15353]:     attrs:
Nov 27 21:21:09 my_hostname slapd[15353]:  objectClass
Nov 27 21:21:09 my_hostname slapd[15353]:  uid
Nov 27 21:21:09 my_hostname slapd[15353]:  userPassword
Nov 27 21:21:09 my_hostname slapd[15353]:  uidNumber
Nov 27 21:21:09 my_hostname slapd[15353]:  gidNumber
Nov 27 21:21:09 my_hostname slapd[15353]:  gecos
Nov 27 21:21:09 my_hostname slapd[15353]:  homeDirectory
Nov 27 21:21:09 my_hostname slapd[15353]:  loginShell
Nov 27 21:21:09 my_hostname slapd[15353]:  krbPrincipalName
Nov 27 21:21:09 my_hostname slapd[15353]:  cn
Nov 27 21:21:09 my_hostname slapd[15353]:  modifyTimestamp
Nov 27 21:21:09 my_hostname slapd[15353]:  modifyTimestamp
Nov 27 21:21:09 my_hostname slapd[15353]:  shadowLastChange
Nov 27 21:21:09 my_hostname slapd[15353]:  shadowMin
Nov 27 21:21:09 my_hostname slapd[15353]:  shadowMax
Nov 27 21:21:09 my_hostname slapd[15353]:  shadowWarning
Nov 27 21:21:09 my_hostname slapd[15353]:  shadowInactive
Nov 27 21:21:09 my_hostname slapd[15353]:  shadowExpire
Nov 27 21:21:09 my_hostname slapd[15353]:  shadowFlag
Nov 27 21:21:09 my_hostname slapd[15353]:  krbLastPwdChange
Nov 27 21:21:09 my_hostname slapd[15353]:  krbPasswordExpiration
Nov 27 21:21:09 my_hostname slapd[15353]:  pwdAttribute
Nov 27 21:21:09 my_hostname slapd[15353]:  authorizedService
Nov 27 21:21:09 my_hostname slapd[15353]:  accountExpires
Nov 27 21:21:09 my_hostname slapd[15353]:  userAccountControl
Nov 27 21:21:09 my_hostname slapd[15353]:  nsAccountLock
Nov 27 21:21:09 my_hostname slapd[15353]:  host
Nov 27 21:21:09 my_hostname slapd[15353]:  loginDisabled
Nov 27 21:21:09 my_hostname slapd[15353]:  loginExpirationTime
Nov 27 21:21:09 my_hostname slapd[15353]:  loginAllowedTimeMap
Nov 27 21:21:09 my_hostname slapd[15353]:  sshPublicKey
Nov 27 21:21:09 my_hostname slapd[15353]:
Nov 27 21:21:09 my_hostname slapd[15353]: conn=3331 op=122 SRCH base="dc=my_domain,dc=com" scope=2 deref=0 filter="(&(uid=leopetr4)(objectClass=posixAccount)(&(uidNumber=*)(!(uidNumber=0))))"
Nov 27 21:21:09 my_hostname slapd[15353]: conn=3331 op=122 SRCH attr=objectClass uid userPassword uidNumber gidNumber gecos homeDirectory loginShell krbPrincipalName cn modifyTimestamp modifyTimestamp shadowLastChange shadowMin shadowMax shadowWarning shadowInactive shadowExpire shadowFlag krbLastPwdChange krbPasswordExpiration pwdAttribute authorizedService accountExpires userAccountControl nsAccountLock host loginDisabled loginExpirationTime loginAllowedTimeMap sshPublicKey
Nov 27 21:21:09 my_hostname slapd[15353]: ==> limits_get: conn=3331 op=122 self="[anonymous]" this="dc=my_domain,dc=com"
Nov 27 21:21:09 my_hostname slapd[15353]: => hdb_search

Modifica: ecco /var/log/secureun tentativo di accesso:

Nov 28 13:09:10 my_hostname su: pam_unix(su-l:auth): authentication failure; logname=root uid=1004 euid=0 tty=pts/1 ruser=leonsp rhost=  user=leopetr4
Nov 28 13:09:10 my_hostname su: pam_sss(su-l:auth): authentication failure; logname=root uid=1004 euid=0 tty=pts/1 ruser=leonsp rhost= user=leopetr4
Nov 28 13:09:10 my_hostname su: pam_sss(su-l:auth): received for user leopetr4: 7 (Authentication failure)

Ecco la configurazione di pam:

# cat /etc/pam.d/system-auth
#%PAM-1.0
# This file is auto-generated.
# User changes will be destroyed the next time authconfig is run.
auth        required      pam_env.so
auth        sufficient    pam_fprintd.so
auth        sufficient    pam_unix.so nullok try_first_pass
auth        requisite     pam_succeed_if.so uid >= 500 quiet
auth        sufficient    pam_sss.so use_first_pass
auth        sufficient    pam_ldap.so use_first_pass
auth        required      pam_deny.so

account     required      pam_unix.so broken_shadow
account     sufficient    pam_localuser.so
account     sufficient    pam_succeed_if.so uid < 500 quiet
account     [default=bad success=ok user_unknown=ignore] pam_sss.so
account     [default=bad success=ok user_unknown=ignore] pam_ldap.so
account     required      pam_permit.so

password    requisite     pam_cracklib.so try_first_pass retry=3 minlen=8 dcredit=-1 ucredit=0 lcredit=-1 ocredit=0 type= reject_username
password    sufficient    pam_unix.so sha512 shadow nullok try_first_pass use_authtok
password    sufficient    pam_sss.so use_authtok
password    sufficient    pam_ldap.so use_authtok
password    required      pam_deny.so

session     optional      pam_keyinit.so revoke
session     required      pam_limits.so
session     optional      pam_mkhomedir.so umask=0077
session     [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid
session     required      pam_unix.so
session     optional      pam_sss.so
session     optional      pam_ldap.so

Configurazione LDAP PAM:

# cat /etc/pam_ldap.conf | grep -v '^#' | grep -v '^$'
base dc=my_domain,dc=com
uri ldaps://my_hostname.my_domain.com
ssl start_tls
tls_cacertdir /etc/openldap/cacerts
pam_password md5

Anche:

# authconfig --test | grep hashing
 password hashing algorithm is sha512

Modifica 2 : l'autenticazione tramite pamtester funziona, ma continua a non funzionare tramite su:

[leonsp@my_hostname ~]$ pamtester login leopetr4 authenticate
Password:
pamtester: successfully authenticated

[leonsp@my_hostname ~]$ pamtester su leopetr4 authenticate
Password:
pamtester: Authentication failure

[leonsp@my_hostname ~]$ pamtester su-l leopetr4 authenticate
Password:
pamtester: successfully authenticated

  1. Perché SSSD non mi consente di accedere come questo utente?

  2. C'è qualcosa che devo fare per configurare SSSD in modo che corrisponda agli {SHA}hash di base ?

  3. Come faccio a capire la differenza tra autenticazione per logine autenticazione per su/ su-l?

ldap  authentication  openldap  rhel6  sssd 
— Leo
fonte
1
Secondo i registri sssd, sssd ti ha autenticato e poi ti ha consentito l'accesso. Vorrei esaminare il file / var / log / secure o equivalente sulla tua distribuzione per vedere quali messaggi PAM ci sono e se c'è forse un altro modulo PAM che agisce. btw usando tls_reqcert = non è mai una buona idea, perché allora anche i certificati non considerati affidabili dalla vostra CA sarebbero consentiti. Oh, e infine un messaggio di password errato di su può significare qualsiasi cosa - questo è solo il messaggio di errore predefinito dell'utilità.
— jhrozek,
@jhrozek Ho aggiunto /var/log/securee fornito i dettagli di configurazione alla domanda
— Leo,
Puoi anche modificare la domanda in modo che anche i log acquisiscano l'errore di autenticazione? Perché anche se / var / log / secure mostra un errore di autenticazione, i registri di sssd_be mostrano il successo: (ven 27 nov 21:15:54 2015) [sssd [be [LDAP]]] [be_pam_handler_callback] (0x0100): risultato inviato [ 0] [LDAP] Puoi modificare i file in modo che venga catturato lo stesso login PAM e che ci siano anche i log dei risponditori PAM?
— jhrozek,
@jhrozek Ho ricatturato /var/log/securee /var/log/sssd/*.logprodotto per su - leopetr4.
— Leo,
1
Hmm, è davvero strano, non c'è nient'altro nel registro del dominio? Puoi aumentare il debug_level (10 è il più alto)? tra l'altro ho controllato l'origine sdap_save_user e il mancato recupero dell'UUID non è fatale.
— jhrozek,

Risposte:

2

Mi dispiace che ho dovuto usare la risposta per porre queste domande ...

Qual è l'output di: authconfig --probee getent passwd leopetr4

La tua autenticazione di sistema è uguale alla tua password? Puoi fornire anche il tuo file di login PAM?

Puoi anche provare a impostare cache_credentials = false in sssd.conf e a svuotare la cache durante il test usando sss_cache -E

— billq
fonte
Secondo la mia risposta, l'errore è scomparso e ha iniziato a funzionare senza un motivo immediatamente chiaro. authconfig --probenon ha output e getent passwd leopetr4outputleopetr4:*:9583:9583:Leo Petr 40:/mnt/home/leopetr4:/bin/bash
— Leo
2

E 'insoddisfacente, ma su - leopetr4e ssh leopetr4@my_hostnameha iniziato a lavorare subito dopo ho impostato la taglia sulla questione. Ho trascorso un po 'di tempo a pensare al perché senza giungere a una conclusione chiara, poiché sarebbe male che smettesse di funzionare all'improvviso come è iniziato.

Una modifica che ricordo di fare è cambiare l' pam_passwordimpostazione /etc/pam_ldap.confda md5e exop:

#pam_password md5
pam_password exop

Tuttavia, il passaggio da rotto a funzionante non è stato immediato, quindi esito ad attribuirlo a tale cambiamento.

— Leo
fonte
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