sssd-users February 2017

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22 participants
23 discussions

Announcing SSSD 1.15.0
by Jakub Hrozek 01 Feb '17

01 Feb '17

== SSSD 1.15.0 === The SSSD team is proud to announce the release of version 1.15.0 of the System Security Services Daemon. As always, the source is available from https://fedorahosted.org/sssd RPM packages will be made available for Fedora shortly. == Feedback == Please provide comments, bugs and other feedback via the sssd-devel or sssd-users mailing lists: https://lists.fedorahosted.org/mailman/listinfo/sssd-devel https://lists.fedorahosted.org/mailman/listinfo/sssd-users == Highlights == * SSSD now allows the responders to be activated by the systemd service manager and exit when idle. This means the services line in sssd.conf is optional and the responders can be started on-demand, simplifying the sssd configuration. Please note that this change is backwards-compatible and the responders listed explicitly in sssd.conf's services line are managed by sssd in the same manner as in previous releases. Please refer to man sssd.conf(5) for more information * The sudo provider is no longer disabled for configurations that do not explicitly include the sudo responder in the services list. In order to disable the sudo-related back end code that executes the periodic LDAP queries, set the sudo_provider to none explicitly * The watchdog signal handler no longer uses signal-unsafe functions. This bug was causing a deadlock in case the watchdog was about to kill a stuck process * A bug that prevented TLS to be set up correctly on systems where libldap links with GnuTLS was fixed * The functionality to alter SSSD configuration through the D-Bus interface provided by the IFP responder was removed. This functionality was not used to the best of our knowledge, had no tests and prevented the InfoPipe responder from running as a non-privileged user. * A bug that prevented statically-linked applications from using libnss_sss was fixed by removing dependency on -lpthreads from the libnss_sss library (please see https://sourceware.org/bugzilla/show_bug.cgi?id=20500 for an example on why linking with -lpthread from an NSS modules is problematic) * Previously, SSSD did not ignore GPOs that were missing the gPCFunctionalityVersion attribute and failed the whole GPO processing. Starting with this version, the GPOs without the gPCFunctionalityVersion are skipped. == Packaging Changes == * The Augeas development libraries are no longer required since the configuration manipulation interface was dropped from the InfoPipe responder * The libsss_config.so internal library was removed as well due to removal of the InfoPipe config management * In order to manage socket-activated or bus activated responders, each responder is now represented by a systemd service file (e.g. sssd-nss.service). All responders except InfoPipe, which is bus-activated, are also managed by a socket unit file (e.g. sssd-nss.socket) == Documentation Changes == * The sssd-secrets responder gained a new option max_payload_size that allows the administrator to limit the maximum size of a secret * A new option responder_idle_timeout was added to support idle termination of socket-activated responders * The sssd-ad and sssd-ipa man pages now summarize differences between the generic Kerberos/LDAP back end and the specialized IPA/AD back ends == Tickets Fixed == https://fedorahosted.org/sssd/ticket/697 Use command line arguments instead env vars for krb5_child https://fedorahosted.org/sssd/ticket/2201 Man pages do not specify that sssd dyndns_refresh_interval < 60 is pulled to 60 seconds https://fedorahosted.org/sssd/ticket/2243 [RFE] Socket-activate responders https://fedorahosted.org/sssd/ticket/2517 krb5_child: Remove getenv() ran as root https://fedorahosted.org/sssd/ticket/3060 better debugging of timestamp cache modifications https://fedorahosted.org/sssd/ticket/3129 [RFE] socket-activate the IFP responder https://fedorahosted.org/sssd/ticket/3151 cache_req: complete the needs of NSS responders https://fedorahosted.org/sssd/ticket/3156 nss_sss might leak memory when calling thread goes away https://fedorahosted.org/sssd/ticket/3214 Update man pages for any AD provider config options that differ from ldap/krb5 providers defaults https://fedorahosted.org/sssd/ticket/3215 Review and update SSSD's wiki pages for 1.15 Alpha release https://fedorahosted.org/sssd/ticket/3235 SSSCTL should not be case sensitive when searching for usernames or groups in a case-insensitive domain https://fedorahosted.org/sssd/ticket/3245 [RFE] Shutdown timeout for {socket,bus}-activated responders https://fedorahosted.org/sssd/ticket/3275 Unchecked return value of sss_cmd_empty_packet(pctx->creq->out); https://fedorahosted.org/sssd/ticket/3283 getsidbyid can fail in some cases due to cache_req refactoring https://fedorahosted.org/sssd/ticket/3284 getsidbyname does not work properly with case insensitive domains == Detailed Changelog == Amith Kumar (1): * MAN: Updation of sssd-ad man page for case when dyndns_refresh_interval < 60 seconds Carl Henrik Lunde (1): * Prevent use after free in fd_input_available David Michael (1): * BUILD: Find a host-prefixed krb5-config when cross-compiling Fabiano Fidêncio (34): * SECRETS: Fix secrets rule in the allowed sections * SECRETS: Add allowed_sec_users_options * SECRETS: Delete all secrets stored during "max_secrets" test * SECRETS: Add configurable payload size limit of a secret * BUILD: Drop libsss_config * IFP: Remove "ChangeDebugTemporarily?" method * AUTOFS: Check return of sss_cmd_empty_packet() * SUDO: Drop logic to disable the backend in case the provider is not set * MONITOR: Expose the monitor's services type * MONITOR: Pass the service type to the RegisterService? method * UTIL: Introduce --socket-activated cmdline option for responders * UTIL: Introduce --dbus-activated cmd option for responders * RESPONDER: Make responders' common code ready for socket activation * AUTOFS: Make AutoFS responder socket-activatable * NSS: Make NSS responder socket-activatable * PAC: Make PAC responder socket-activatable * PAM: Make PAM responder socket-activatable * SSH: Make SSH responder socket-activatable * SUDO: Make Sudo responder socket-activatable * IFP: Make IFP responder dbus-activatable * MONITOR: Split up check_services() * MONITOR: Deal with no services set up * MONITOR: Deal with socket-activated responders * MAN: Mention that the services' list is optional * MAN: "user" doesn't work with socket-activated services * MONITOR: Don't expose monitor_common_send_id() * SBUS: Add a time_t pointer to the sbus_connection * SBUS: Add destructor data to sbus_connection * RESPONDER: Make clear {reset_,}idle_timer() are related to client * RESPONDER: Don't expose client_idle_handler() * RESPONDER: Shutdown {dbus,socket}-activated responders in case they're idle * RESPONDER: Change how client timeout is calculated * SERVER: Set the process group during server_setup() * WATCHDOG: Avoid non async-signal-safe from the signal_handler Howard Guo (1): * sss_client: Defer thread cancellation until completion of nss/pam operations Jakub Hrozek (16): * Updating the version for the 1.14.3 development * Updating the version to track sssd-1-15 development * SYSDB: Split sysdb_try_to_find_expected_dn() into smaller functions * SYSDB: Augment sysdb_try_to_find_expected_dn to match search base as well * MONITOR: Do not set up watchdog for monitor * MONITOR: Remove deprecated pong sbus method * MONITOR: Remove unused shutDown sbus method * Qualify ghost user attribute in case ldap_group_nesting_level is set to 0 * tests: Add a test for group resolution with ldap_group_nesting_level=0 * BUILD: Fix a typo in inotify.m4 * SSH: Use default_domain_suffix for users' authorized keys * SYSDB: Suppress sysdb_delete_ts_entry failed: 0 * STAP: Only print transaction statistics if the script caught some transactions * test_sssctl: Add an integration test for sssctl netgroup-show * KRB5: Advise the user to inspect the krb5_child.log if the child fails with a System Error * IFP: Fix GetUserAttr? Justin Stephenson (2): * MAN: Document different defaults for AD provider * MAN: Document different defaults for IPA provider Lukas Slebodnik (45): * crypto: Port libcrypto code to openssl-1.1 * BUILD: Fix build without samba * libcrypto: Check right value of CRYPTO_memcmp * crypto-tests: Add unit test for sss_encrypt + sss_decrypt * crypto-tests: Rename encrypt decrypt test case * BUILD: Accept krb5 1.15 for building the PAC plugin * dlopen-test: Use portable macro for location of .libs * dlopen-test: Add missing libraries to the check list * dlopen-test: Move libraries to the right "sections" * dlopen-test: Add check for untested libraries * BUILD: Fix linking with librt * KRB5: Remove spurious warning in logs * TESTS: Check new line at end of file * UTIL: Fix implicit declaration of function 'htobe32' * SYSDB: Remove unused prototype from header file * sssctl: Fix missing declaration * UTIL: Fix compilation of sss_utf8 with libunistring * CONFDB: Supress clang false passitive warnings * SIFP: Fix warning format-security * RESPONDER: Remove dead assignment to the variable ret * Fix compilation with python3.6 * intg: Generate tmp dir with lowercase * LDAP: Fix debug messages after errors in *_get_send * LDAP: Removed unused attr_type from users_get_send * LDAP: Remove unused parameter attr_type from groups_get_send * DP: Remove unused constants BE_ATTR_* * DP: Remove unused attr_type from struct dp_id_data * LDAP: Remove attrs_type related TODO comments * sssd_ldb.py: Remove a leftover debug message * intg: Fix python2,3 urllib * intg: Avoid using xrange in tests * intg: Avoid using iteritems for dictionary * intg: Use bytes with hash function * intg: Fix creating of slapd configuration * intg: Use bytes for value of attributes in ldif * intg: Use bytes as input in ctypes * intg: Return strings from ctypes wrappers * intg: Convert output of executed commands to strings * intg: Return list for enumeration functions * SYSDB: Update filter for get object by id * sysdb-tests: Add test for sysdb_search_object_by_id * sysdb: Search also aliases in sysdb_search_object_by_name * sysdb-tests: Add test for sysdb_search_object_by_name * MONITOR: Fix warning with undefined macro HAVE_SYSTEMD * UTIL: Unset O_NONBLOCK for ldap connection Michal Židek (7): * sssctl: Flags for command initialization * ipa: Nested netgroups do not work * common: Fix domain case sensitivity init * sssctl: Search by alias * sssctl: Case insensitive filters * tests: sssctl user/group-show basic tests * MAN: sssctl debug level Mike Ely (1): * ad_access_filter search for nested groups Pavel Březina (40): * cache_req: move from switch to plugins; add logic * cache_req: move from switch to plugins, add plugins * cache_req: switch to new code * cache_req: delete old code * sudo: do not store usn if no rules are found * nss: move nss_ctx->global_names to rctx * ifp: remove unused fields from state * setent_notify: remove unused private context * sss_crypto.h: include required headers * sss_output_name: do not require fq name * cache_req: fix initgroups by name * cache_req: skip first search on bypass cache * cache_req: encapsulate output data into structure * cache_req: add ability to gather result from all domains * cache_req: add ability to filter domains by enumeration * cache_req: add user enumeration * cache_req: add group enumeration * cache_req: add support for service by name * cache_req: add support for service by port * cache_req: add support for services enumeration * cache_req: add support for netgroups * cache_req: allow shallow copy of result * cache_req: allow to return well known object as result * cache_req: return well known objects in object by sid * cache_req: make sure that we always fetch default attrs * cache_req: allow upn search with attrs * cache_req: add object by name * cache_req: add object by id * cache_req: make plug-ins definition const * cache_req: improve debugging * cache_req: fix plugin function description * cache_req: allow to search subdomains without fqn * cache_req: do not set ncache if dp request fails * responders: unify usage of sss_cmd_send_empty and _error * responders: remove checks that are handled inside cache_req * responders: do not try to contact DP with LOCAL provider * utils: add sss_ptr_hash module * nss: rewrite nss responder so it uses cache_req * nss: make nss responder tests work with new code * nss: remove the old code Petr Cech (2): * SYSDB: Adding message to inform which cache is used * SYSDB: Adding message about reason why cache changed Petr Čech (5): * SYSDB: Adding lowercase sudoUser form * TESTS: Extending sysdb sudo store tests * RESPONDER: Adding of return value checking * UTIL: Removing of never read value * SYSDB: Fixing of sudorule without a sudoUser Sorah Fukumori (1): * BUILD: Fix installation without samba Sumit Bose (11): * sysdb: add parent_dom to sysdb_get_direct_parents() * sdap: make some nested group related calls public * LDAP/AD: resolve domain local groups for remote users * PAM: add a test for filter_responses() * PAM: add pam_response_filter option * IPA/AD: check auth ctx before using it * krb5: Use command line arguments instead env vars for krb5_child * krb5: fix two memory leaks * krb5: add tests for common functions * sss_ptr_hash_delete_all: use unsigned long int * libwbclient-sssd: wbcLookupSid() allow NULL arguments Victor Tapia (1): * MONITOR: Create pidfile after responders started

4 14

SSSD AD GPO and SUDO
by mdiorio＠gmail.com 01 Feb '17

01 Feb '17

Hi Everyone, I have an AD domain joined system using realmd and that is working fine. I want to use Group Policy to configure access, and have it set up. I added my users to the Allow log on through Terminal Services GPO and I can successfully authenticate and SSH into the system using kerberos and password auth. My next problem is SUDO rights - I don't have any. Supposedly, ad_gpo_map_permit is a list of PAM services that are ALWAYS allowed when using GPO access, and this by default includes sudo and sudo-i. Yet I can't SUDO. In /etc/nsswitch.conf I added: sudoers: files sss In /etc/sssd.conf I updated: services = nss, pam, autofs, sudo and added the empty [sudo] section. In the [domain/] section I added: sudo_provider: ad but from what I've read this isn't needed. Since I don't want the world to be able to SUDO, I also tried adding to sssd.conf domain section ad_gpo_map_service = +sudo,+sudo-i and added my users to the Allow logon as a service GPO, but still no luck. My sssd sudo log doesn't look like it's querying GPO for permissions through. (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sudosrv_get_rules_send] (0x0400): Running initgroups for [mdiorio(a)internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_send] (0x0400): Cache Request [Initgroups by name #2]: New request (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_send] (0x0400): Cache Request [Initgroups by name #2]: Parsing input name [mdiorio(a)internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sss_parse_name_for_domains] (0x0200): name 'mdiorio(a)internal.ieeeglobalspec.com' matched expression for domain 'internal.ieeeglobalspec.com', user is mdiorio (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_set_name] (0x0400): Cache Request [Initgroups by name #2]: Setting name [mdiorio] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_select_domains] (0x0400): Cache Request [Initgroups by name #2]: Performing a single domain search (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_set_domain] (0x0400): Cache Request [Initgroups by name #2]: Using domain [internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_check_ncache] (0x0400): Cache Request [Initgroups by name #2]: Checking negative cache for [mdiorio(a)internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sss_ncache_check_str] (0x2000): Checking negative cache for [NCE/USER/internal.ieeeglobalspec.com/mdiorio@internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_get_object] (0x0200): Cache Request [Initgroups by name #2]: Requesting info for [mdiorio(a)internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_cache_check] (0x0400): Cache Request [Initgroups by name #2]: [mdiorio(a)internal.ieeeglobalspec.com] entry is valid (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_cache_search] (0x0400): Cache Request [Initgroups by name #2]: Returning info for [mdiorio(a)internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_done] (0x0400): Cache Request [Initgroups by name #2]: Finished: Success (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sudosrv_query_cache] (0x0200): Searching sysdb with [(&(objectClass=sudoRule)(dataExpireTimestamp<=1485799511)(|(name=defaults)(sudoUser=ALL)(sudoUser=mdiorio(a)internal.ieeeglobalspec.com)(sudoUser=#1002201109) ...... Truncated AD Group query ---- (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sudosrv_refresh_rules_send] (0x0400): No expired rules were found for [mdiorio@internal.ieeeglobalspec.com@internal.ieeeglobalspec.com]. (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sudosrv_fetch_rules] (0x0400): Retrieving default options for [mdiorio@internal.ieeeglobalspec.com@internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sudosrv_query_cache] (0x0200): Searching sysdb with [(&(objectClass=sudoRule)(name=defaults))] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sudosrv_fetch_rules] (0x0400): Returning 0 default options for [mdiorio@internal.ieeeglobalspec.com@internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sudosrv_build_response] (0x2000): error: [0] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sudosrv_build_response] (0x2000): rules_num: [0] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sudosrv_cmd] (0x2000): Using protocol version [1] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sudosrv_get_rules_send] (0x0400): Running initgroups for [mdiorio(a)internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_send] (0x0400): Cache Request [Initgroups by name #3]: New request (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_send] (0x0400): Cache Request [Initgroups by name #3]: Parsing input name [mdiorio(a)internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sss_parse_name_for_domains] (0x0200): name 'mdiorio(a)internal.ieeeglobalspec.com' matched expression for domain 'internal.ieeeglobalspec.com', user is mdiorio (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_set_name] (0x0400): Cache Request [Initgroups by name #3]: Setting name [mdiorio] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_select_domains] (0x0400): Cache Request [Initgroups by name #3]: Performing a single domain search (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_set_domain] (0x0400): Cache Request [Initgroups by name #3]: Using domain [internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_check_ncache] (0x0400): Cache Request [Initgroups by name #3]: Checking negative cache for [mdiorio(a)internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sss_ncache_check_str] (0x2000): Checking negative cache for [NCE/USER/internal.ieeeglobalspec.com/mdiorio@internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_get_object] (0x0200): Cache Request [Initgroups by name #3]: Requesting info for [mdiorio(a)internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_cache_check] (0x0400): Cache Request [Initgroups by name #3]: [mdiorio(a)internal.ieeeglobalspec.com] entry is valid (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_cache_search] (0x0400): Cache Request [Initgroups by name #3]: Returning info for [mdiorio(a)internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [cache_req_done] (0x0400): Cache Request [Initgroups by name #3]: Finished: Success (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sudosrv_query_cache] (0x0200): Searching sysdb with [(&(objectClass=sudoRule)(dataExpireTimestamp<=1485799511)(|(name=defaults)(sudoUser=ALL)(sudoUser=mdiorio(a)internal.ieeeglobalspec.com)(sudoUser=#1002201109) -------------- Truncated group query -------------- (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sudosrv_fetch_rules] (0x0400): Returning 0 rules for [mdiorio@internal.ieeeglobalspec.com@internal.ieeeglobalspec.com] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sudosrv_build_response] (0x2000): error: [0] (Mon Jan 30 13:05:11 2017) [sssd[sudo]] [sudosrv_build_response] (0x2000): rules_num: [0] (Mon Jan 30 13:05:13 2017) [sssd[sudo]] [client_recv] (0x0200): Client disconnected! (Mon Jan 30 13:05:13 2017) [sssd[sudo]] [client_close_fn] (0x2000): Terminated client [0x7f95cfb03870][20] One thing I do find strange is that it appears to be trying to find user@domain@domain Any thoughts - I thought I had this all figured out, but I'm probably missing something simple. Thanks!

2 9

SSSD with AD issues with only certain users
by namanth＠gmail.com 01 Feb '17

01 Feb '17

I am trying to diagnose a very weird problem. I have SSSD configured to connect to my domain. I have this working. I can log in with a bunch of accounts, but not all accounts. For instance. [root@bscacad3 sssd]# getent passwd andersnj01 andersnj01:*:1533736219:1533633217:andersnj01:/home/bsclogon.buffalostate.e… Jan 31 14:44:20 bscacad3 sshd[3641]: Accepted password for andersnj01 from 136.183.201.231 port 58620 ssh2 This accounts (andersnj01) can connect. It is in the same domain security group as the next one. [root@bscacad3 sssd]# getent passwd kraatzn01 kraatzn01:*:1533844379:1533633217:kraatzn01:/home/bsclogon.buffalostate.edu… Jan 31 14:44:37 bscacad3 sshd[3687]: Failed password for kraatzn01 from 136.183.201.231 port 58624 ssh2 This account (kraatzn01) cannot log in. Again they are in the same security group. Now to throw another layer on this. When I worked with this person directly and connected on the machine they were using, I was able to log in with his user/pass one time. As a matter of fact I could see that account was still logged in until I rebooted the machine, however when I went back to my machine it would refuse the login. IPTABLES ports are open. All accounts in one security group can log in, some accounts in another security group cannot. The auth line is: ad_access_filter = (|(memberOf=CN=Linux_FacStaff,OU=Security Groups,DC=bsclogon,DC=buffalostate,DC=edu)(memberOf=CN=Linux_Student,OU=Security Groups,DC=bsclogon,DC=buffalostate,DC=edu)) both usernames above are part of the Linux_Student security group. If you need any other conf files or any info, please let me know and I will respond as soon as i can. Edit: I am sending this again, I am sorry about this. IT says i didnt post anything, and I do not see it in the list of posted. It this is moderated and it is posted 2 times, please disregard this one. Again new user, posting on website, sorry for the inconvenience.

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sssd-users February 2017