SSSD 1.16.4 Release Notes
Highlights
New Features
The list of PAM services which are allowed to authenticate using a Smart Card is now configurable using a new option
pam_p11_allowed_services
. (#2926)A new configuration option
ad_gpo_implicit_deny
was added. This option (when set to True) can be used to deny access to users even if there is not applicable GPO. Normally users are allowed access in this situation. (#3701)The LDAP authentication provider now allows to use a different method of changing LDAP passwords using a modify operation in addition to the default extended operation. This is meant to support old LDAP servers that do not implement the extended operation. The password change using the modification operation can be selected with
ldap_pwmodify_mode = "ldap_modify"
(#1314)The
auto_private_groups
configuration option now takes a new valuehybrid
. This mode autogenerates private groups for user entries where the UID and GID values have the same value and at the same time the GID value does not correspond to a real group entry in LDAP (#3822)
Security issues fixed
CVE-2019-3811: SSSD used to return “/” in case a user entry had no home directory. This was deemed a security issue because this flaw could impact services that restrict the user’s filesystem access to within their home directory. An empty home directory field would indicate “no filesystem access”, where sssd reporting it as “/” would grant full access (though still confined by unix permissions, SELinux etc).
Notable bug fixes
The IPA provider, in a setup with a trusted Active Directory domain, did not remove cached entries that were no longer present on the AD side (#3984)
The Active Directory provider now fetches the user information from the LDAP port and switches to using the Global Catalog port, if available for the group membership. This fixes an issue where some attributes which are not available in the Global Catalog, typically the home directory, would be removed from the user entry. (#2474)
The IPA SELinux provider now sets the user login context even if it is the same as the system default. This is important in case the user has a non-standard home directory, because then only adding the user to the SELinux database ensures the home directory will be labeled properly. However, this fix causes a performance hit during the first login as the context must be written into the semanage database.
The sudo responder did not reflect the case_sensitive domain option (#3820)
A memory leak when requesting netgroups repeatedly was fixed (#3870)
An issue that caused SSSD to sometimes switch to offline mode in case not all domains in the forest ran the Global Catalog service was fixed (#3902)
The SSH responder no longer fails completely if the
p11_child
times out when deriving SSH keys from a certificate (#3937)The negative cache was not reloaded after new sub domains were discovered which could have lead to a high SSSD load (#3683)
The negative cache did not work properly for in case a lookup fell back to trying a UPN instead of a name (#3978)
If any of the SSSD responders was too busy, that responder wouldn’t have refreshed the trusted domain list (#3967)
A potential crash due to a race condition between the fail over code refreshing a SRV lookup and back end using its results (#3976)
Sudo’s runAsUser and runAsGroup attributes did not match properly when used in setups with domain_resolution_order
Processing of the values from the
filter_users
orfilter_groups
options could trigger calls to blocking NSS API functions which could in turn prevent the startup of SSSD services in case nsswitch.conf contained other modules thansss
orfiles
(#3963)
Tickets Fixed
#4940 - NSS responder does no refresh domain list when busy
#3967 - Make list of local PAM services allowed for Smartcard authentication configurable
#4813 - sssd only sets the SELinux login context if it differs from the default
#4814 - sudo: search with lower cased name for case insensitive domains
#4860 - nss: memory leak in netgroups
#4478 - When sssd is configured with id_provider proxy and auth_provider ldap, login fails if the LDAP server is not allowing anonymous binds.
#4865 - CURLE_SSL_CACERT is deprecated in recent curl versions
#4887 - SSSD must be cleared/restarted periodically in order to retrieve AD users through IPA Trust
#4886 - sssd returns ‘/’ for emtpy home directories
#4904 - sss_cache prints spurious error messages when invoked from shadow-utils on package install
#4839 - The config file validator says that certmap options are not allowed
#4917 - If p11_child spawned from sssd_ssh times out, sssd_ssh fails completely
#4934 - sssd config-check reports an error for a valid configuration option
#4715 - [RFE] Allow changing default behavior of SSSD from an allow-any default to a deny-any default when it can’t find any GPOs to apply to a user login.
#3516 - AD: do not override existing home-dir or shell if they are not available in the global catalog
#4932 - sssd_krb5_locator_plugin introduces delay in cifs.upcall krb5 calls
#4876 - SSSD changes the memory cache file ownership away from the SSSD user when running as root
#4920 - RemovedInPytest4Warning: Fixture “passwd_ops_setup” called directly
#4309 - Revert workaround in CI for bug in python-{request,urllib3}
#4950 - UPN negative cache does not use values from ‘filter_users’ config option
#4955 - filter_users option is not applied to sub-domains if SSSD starts offline
#4925 - SSSD netgroups do not honor entry_cache_nowait_percentage
#4956 - IPA: Deleted user from trusted domain is not removed properly from the cache on IPA clients
#4949 - crash in dp_failover_active_server
#4931 - sudo: runAsUser/Group does not work with domain_resolution_order
#2356 - RFE Request for allowing password changes using SSSD in DS which dont follow OID’s from RFC 3062
#4816 - Enable generating user private groups only for users with no primary GID
#4936 - Responders: processing of
filter_users</span>/<span class="title-ref">filter_groups
should avoid calling blocking NSS API
Packaging Changes
Several files in the reference specfile changed permissions to avoid issues with verifying the file integrity with
rpm -V
in case SSSD runs as a different user than the default user it is configured with (#3890)
Documentation Changes
The AD provider default value of
fallback_homedir
was changed tofallback_homedir = /home/%d/%u
to provide home directories for users without thehomeDirectory
attribute.A new option
ad_gpo_implicit_deny
, defaulting to False (#3701)A new option
ldap_pwmodify_mode
(#1314)A new option
pam_p11_allowed_services
(#2926)The
auto_private_groups
accepts a new option valuehybrid
(#3822)Improved documentation of the Kerberos locator plugin
Detailed Changelog
$ git shortlog --pretty=format:"%h %s" -w0,4 sssd-1_16_3..sssd-1_16_4
Alexey Tikhonov (5):
d6ed04f01 Fix error in hostname retrieval
acce03265 lib/cifs_idmap_sss: fixed unaligned mem access
2fb5be471 ci/sssd.supp: fixed c-ares-suppress-leak-from-init
6ff01196f negcache: avoid "is_*_local" calls in some cases
5b0bb56a0 Monitor: changed provider startup timeout
Fabiano Fidêncio (1):
2b3b41dad man/sss_ssh_knownhostsproxy: fix typo pubkeys -> pubkey
Jakub Hrozek (54):
6bb137cda Updating the version to track 1.16.4 development
a57d9ec05 src/tests/python-test.py is GPLv3+
3badebcc9 src/tests/intg/util.py is licensed under GPLv3+
e4864db4e src/tests/intg/test_ts_cache.py is licensed under GPLv3+
444b463fb src/tests/intg/test_sudo.py is licensed under GPLv3+
a54221750 src/tests/intg/test_sssctl.py is licensed under GPLv3+
252758908 src/tests/intg/test_ssh_pubkey.py is licensed under GPLv3+
e92040a60 src/tests/intg/test_session_recording.py is licensed under GPLv3+
33c668e36 src/tests/intg/test_secrets.py is licensed under GPLv3+
7dc03ff9b src/tests/intg/test_pysss_nss_idmap.py is licensed under GPLv3+
3ae7458ad src/tests/intg/test_pam_responder.py is licensed under GPLv3+
62a1eb3b2 src/tests/intg/test_pac_responder.py is licensed under GPLv3+
02008a016 src/tests/intg/test_netgroup.py is licensed under GPLv3+
7283ee1d0 src/tests/intg/test_memory_cache.py is licensed under GPLv3+
23df59891 src/tests/intg/test_local_domain.py is licensed under GPLv3+
5eee13a0d src/tests/intg/test_ldap.py is licensed under GPLv3+
85486d23d src/tests/intg/test_kcm.py is licensed under GPLv3+
895524e61 src/tests/intg/test_infopipe.py is licensed under GPLv3+
e7afe9f0e src/tests/intg/test_files_provider.py is licensed under GPLv3+
c2296d02c src/tests/intg/test_files_ops.py is licensed under GPLv3+
8cc67107e src/tests/intg/test_enumeration.py is licensed under GPLv3+
85d939d65 src/tests/intg/sssd_passwd.py is licensed under GPLv3+
aa5f81746 src/tests/intg/sssd_nss.py is licensed under GPLv3+
1f244c034 src/tests/intg/sssd_netgroup.py is licensed under GPLv3+
44d637d05 src/tests/intg/sssd_ldb.py is licensed under GPLv3+
8a1092b6a src/tests/intg/sssd_id.py is licensed under GPLv3+
31f3f7982 src/tests/intg/sssd_group.py is licensed under GPLv3+
744ae1a07 src/tests/intg/secrets.py is licensed under GPLv3+
b5c42f4c5 src/tests/intg/ldap_local_override_test.py is licensed under GPLv3+
b94cf691f src/tests/intg/ldap_ent.py is licensed under GPLv3+
fa125f1bc src/tests/intg/krb5utils.py is licensed under GPLv3+
89248d04f src/tests/intg/kdc.py is licensed under GPLv3+
bcbc2f26d src/tests/intg/files_ops.py is licensed under GPLv3+
df5297fd5 src/tests/intg/ent_test.py is licensed under GPLv3+
ce5a90b34 src/tests/intg/ent.py is licensed under GPLv3+
79f70d675 src/tests/intg/ds_openldap.py is licensed under GPLv3+
3ee03cfcb src/tests/intg/ds.py is licensed under GPLv3+
de47b6600 src/config/setup.py.in is licensed under GPLv3+
02d234004 src/config/SSSDConfig/ipachangeconf.py is licensed under GPLv3+
9ba105f8b Explicitly add GPLv3+ license blob to several files
e7e942ceb SELINUX: Always add SELinux user to the semanage database if it doesn't exist
bca193576 pep8: Ignore W504 and W605 to silence warnings on Debian
876f1cb87 LDAP: minor refactoring in auth_send() to conform to our coding style
7eb18ab68 LDAP: Only authenticate the auth connection if we need to look up user information
118c44f90 NSS: Avoid changing the memory cache ownership away from the sssd user
4c1b2d4df TESTS: Only use __wrap_sss_ncache_reset_repopulate_permanent to finish test if needed
15f017770 UTIL: Add a is_domain_mpg shorthand
e01473aa7 UTIL: Convert bool mpg to an enum mpg_mode
e0c34a688 CONFDB: Read auto_private_groups as string, not bool
e09dffedc CONFDB/SYSDB: Add the hybrid MPG mode
271544b63 CACHE_REQ: Add cache_req_data_get_type()
c083df056 NSS: Add the hybrid-MPG mode
64b855dbd TESTS: Add integration tests for auto_private_groups=hybrid
4f47ff665 Updating the translations for the 1.16.4 release
Lukas Slebodnik (26):
86de91f93 krb5_locator: Make debug function internal
276f2e345 krb5_locator: Simplify usage of macro PLUGIN_DEBUG
09dc1d9dc krb5_locator: Fix typo in debug message
aefdf7035 krb5_locator: Fix formatting of the variable port
9680ac9ce krb5_locator: Use format string checking for debug function
93caaf294 PAM: Allow to configure pam services for Smartcards
4d3841ca3 UTIL: Fix compilation with curl 7.62.0
e80e869a9 test_pac_responder: Skip test if pac responder is not installed
de7f87730 INTG: Show extra test summary info with pytest
517fe0710 CI: Modify suppression file for c-ares-1.15.0
8e6c52f6b sss_cache: Do not fail for missing domains
0a27a4716 intg: Add test for sss_cache & shadow-utils use-case
498aaac23 sss_cache: Do not fail if noting was cached
7983826c3 test_sss_cache: Add test case for invalidating missing entries
088eb5451 pyhbac-test: Do not use assertEquals
b27ab9e75 SSSDConfigTest: Do not use assertEquals
07d7eeaec SSSDConfig: Fix ResourceWarning unclosed file
3c0213fe5 SSSDConfigTest: Remove usage of failUnless
8f0a2acdc BUILD: Fix condition for building sssd-kcm man page
9e6a22489 NSS: Do not use deprecated header files
6c8084778 sss_cache: Fail if unknown domain is passed in parameter
3ec716bb0 test_sss_cache: Add test case for wrong domain in parameter
280512167 test_files_provider: Do not use pytest fixtures as functions
0fb6543ec test_ldap: Do not uses pytest fixtures as functions
688134ee5 Revert "intg: Generate tmp dir with lowercase"
f44161733 ent_test: Update assertions for python 3.7.2
Michal Židek (1):
c96a38294 GPO: Add gpo_implicit_deny option
Pavel Březina (9):
2d9286102 sudo: respect case sensitivity in sudo responder
720a423a0 nss: use enumeration context as talloc parent for cache req result
486b5523b netgroups: honor cache_refresh_percent
93a3a20b6 sdap: add sdap_modify_passwd_send
be591f08f sdap: add ldap_pwmodify_mode option
8d6fa4961 sdap: split password change to separate request
0a52934c4 sdap: use ldap_pwmodify_mode to change password
e2f00aea6 sudo ipa: do not store rules without sudoHost attribute
705fd73e5 be: remember last good server's name instead of fo_server structure
Sumit Bose (22):
3dc885344 intg: flush the SSSD caches to sync with files
1a7c6ab6e LDAP: Log the encryption used during LDAP authentication
9e8587956 BUILD: Accept krb5 1.17 for building the PAC plugin
d1c930809 tests: fix mocking krb5_creds in test_copy_ccache
19e6c50df tests: increase p11_child_timeout
d33ec6442 Revert "IPA: use forest name when looking up the Global Catalog"
74568bdde ipa: use only the global catalog service of the forest root
0a27fba0a utils: make N_ELEMENTS public
911d7bb58 ad: replace ARRAY_SIZE with N_ELEMENTS
382400869 responder: fix domain lookup refresh timeout
8ffc64c10 ldap: add get_ldap_conn_from_sdom_pvt
0b5a35969 ldap: prefer LDAP port during initgroups user lookup
f80dad680 ldap: user get_ldap_conn_from_sdom_pvt() where possible
1791eed5d krb5_locator: always use port 88 for master KDC
6bb46a671 NEGCACHE: initialize UPN negative cache as well
720907dd7 NEGCACHE: fix typo in debug message
faede6d27 NEGCACHE: repopulate negative cache after get_domains
cca33946f ldap: add users_get_handle_no_user()
19fbcd1d4 ldap: make groups_get_handle_no_group() public
c3821674f ipa s2n: fix typo
b424c8a1b ipa s2n: do not add UPG member
3bed774e9 ipa s2n: try to remove objects not found on the server
Thorsten Scherf (1):
5e70cf569 CONFIG: add missing ldap attributes for validation
Tomas Halman (4):
28792523a nss: sssd returns '/' for emtpy home directories
31637fdfa ssh: sssd_ssh fails completely on p11_child timeout
340de230e ssh: p11_child error message is too generic
96e4d713a krb5_locator: Allow hostname in kdcinfo files
Victor Tapia (1):
8ba47275a GPO: Allow customization of GPO_CROND per OS
mateusz (1):
db06ec55f Added note about default value of ad_gpo_map_batch parameter