sssd_selinux(8)

📦
version 20250627+git412.dbf877ab7 · 7 versions
, in opensuse-leap 16.0

💖 sssd_selinux(8) — the SELinux policy glow-up for sssd 💖

okay so bestie, welcome to the sssd_selinux(8) manual page ✨ yes that's the real name, and honestly? it's giving "the security rules that let sssd do its whole thing on your system". grab a snack, we're going in 🍓

✨ NAME ✨

sssd_selinux — the Security Enhanced Linux Policy for the sssd processes 👑

🌸 DESCRIPTION 🌸

Security-Enhanced Linux secures the sssd processes via flexible mandatory access control. periodt 💅

The sssd processes execute with the sssd_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier.

like, for example:

ps -eZ | grep sssd_t

that's the vibe check for your processes 🔍

🦋 ENTRYPOINTS 🦋

The sssd_t SELinux type can be entered via the sssd_exec_t file type.

The default entrypoint paths for the sssd_t domain are the following:

/usr/bin/sssd, /usr/bin/sss_cache, /usr/libexec/sssd/sssd_ifp,
/usr/libexec/sssd/sssd_kcm, /usr/libexec/sssd/sssd_nss,
/usr/libexec/sssd/sssd_pac, /usr/libexec/sssd/sssd_pam,
/usr/libexec/sssd/sssd_ssh, /usr/libexec/sssd/sssd_sudo,
/usr/libexec/sssd/sssd_autofs, /usr/libexec/sssd/sssd_secrets

those are the doors, bestie 🚪✨

🎀 PROCESS TYPES 🎀

SELinux defines process types (domains) for each process running on the system.

You can see the context of a process using the -Z option to ps.

Policy governs the access confined processes have to files. SELinux sssd policy is very flexible allowing users to setup their sssd processes in as secure a method as possible. it's literally so accommodating 🫶

The following process types are defined for sssd:

  • sssd_t
  • sssd_selinux_manager_t
Note: semanage permissive -a sssd_t can be used to make the process type sssd_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so like, it stops blocking you but it still talks about it 😭 main character snitch energy.

🔥 BOOLEANS 🔥

SELinux policy is customizable based on least access required. sssd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run sssd with the tightest access possible. ngl this is the fun part 🎛️

If you want to allow sssd read, view, and write access to kernel keys with kernel_t type, you must turn on the sssd_access_kernel_keys boolean. Disabled by default.

setsebool -P sssd_access_kernel_keys 1

If you want to allow sssd connect to all unreserved ports, you must turn on the sssd_connect_all_unreserved_ports boolean. Disabled by default.

setsebool -P sssd_connect_all_unreserved_ports 1

If you want to allow sssd use usb devices, you must turn on the sssd_use_usb boolean. Disabled by default.

setsebool -P sssd_use_usb 1

If you want to dontaudit all daemons scheduling requests (setsched, sys_nice), you must turn on the daemons_dontaudit_scheduling boolean. Enabled by default.

setsebool -P daemons_dontaudit_scheduling 1

If you want to allow all domains to execute in fips_mode, you must turn on the fips_mode boolean. Enabled by default.

setsebool -P fips_mode 1

If you want to allow Apache to communicate with sssd service via dbus, you must turn on the httpd_dbus_sssd boolean. Disabled by default.

setsebool -P httpd_dbus_sssd 1

If you want to allow system to run with NIS, you must turn on the nis_enabled boolean. Disabled by default.

setsebool -P nis_enabled 1

💜 MANAGED FILES 💜

The SELinux process type sssd_t can manage files labeled with the following file types. The paths listed are the default paths for these file types. Note the processes UID still need to have DAC permissions — SELinux doesn't do everything for you, bestie 🙈

  • auth_cache_t
/var/cache/coolkey(/.*)?
  • cluster_conf_t
/etc/cluster(/.*)?
  • cluster_var_lib_t
/var/lib/pcsd(/.*)?
/var/lib/cluster(/.*)?
/var/lib/openais(/.*)?
/var/lib/pengine(/.*)?
/var/lib/corosync(/.*)?
/usr/lib/heartbeat(/.*)?
/var/lib/heartbeat(/.*)?
/var/lib/pacemaker(/.*)?
  • cluster_var_run_t
/run/crm(/.*)?
/run/cman_.*
/run/rsctmp(/.*)?
/run/aisexec.*
/run/heartbeat(/.*)?
/run/pcsd-ruby.socket
/run/corosync-qnetd(/.*)?
/run/corosync-qdevice(/.*)?
/run/pcsd.socket
/run/corosync.pid
/run/cpglockd.pid
/run/rgmanager.pid
/run/cluster/rgmanager.sk
  • faillog_t
/var/log/btmp.*
/run/faillock(/.*)?
/var/log/faillog.*
/var/log/tallylog.*
  • krb5_host_rcache_t
/var/tmp/krb5_0.rcache2
/var/cache/krb5rcache(/.*)?
/var/tmp/nfs_0
/var/tmp/DNS_25
/var/tmp/host_0
/var/tmp/imap_0
/var/tmp/HTTP_23
/var/tmp/HTTP_48
/var/tmp/ldap_55
/var/tmp/ldap_487
/var/tmp/ldapmap1_0
  • krb5_keytab_t
/var/kerberos/krb5(/.*)?
/etc/krb5.keytab
/etc/krb5kdc/kadm5.keytab
/var/kerberos/krb5kdc/kadm5.keytab
  • root_t
/sysroot/.aleph-version.json
/sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
/
/initrd
/var/lib/ntp
  • security_t
/selinux
  • selinux_login_config_t
/etc/selinux/([^/]*/)?logins(/.*)?
  • sssd_var_log_t
/var/log/sssd(/.*)?
  • sssd_var_run_t
/run/sssd.pid
/run/sssd(/.*)?
/run/secrets.socket
/run/.heim_org.h5l.kcm-socket
  • user_tmp_type — all user tmp files

🌈 FILE CONTEXTS 🌈

SELinux requires files to have an extended attribute to define the file type.

You can see the context of a file using the -Z option to ls.

Policy governs the access confined processes have to these files. SELinux sssd policy is very flexible allowing users to setup their sssd processes in as secure a method as possible. yes it said that twice, it's that flexible, we love a consistent queen 👑

🗂️ EQUIVALENCE DIRECTORIES 🗂️

sssd policy stores data with multiple different file context types under the /var/lib/sss directory. If you would like to store the data in a different directory you can use the semanage command to create an equivalence mapping. If you wanted to store this data under the /srv directory you would execute the following command:

semanage fcontext -a -e /var/lib/sss /srv/sss
restorecon -R -v /srv/sss

look at you, relocating data like a boss 💅

🧚 STANDARD FILE CONTEXT 🧚

SELinux defines the file context types for the sssd, if you wanted to store files with these types in a different paths, you need to execute the semanage command to specify alternate labeling and then use restorecon to put the labels on disk.

semanage fcontext -a -t sssd_exec_t '/srv/sssd/content(/.*)?'
restorecon -R -v /srv/mysssd_content
Note: SELinux often uses regular expressions to specify labels that match multiple files. regex girlies rise 🙈✨

The following file types are defined for sssd:

  • sssd_conf_t

Set files with the sssd_conf_t type, if you want to treat the files as sssd configuration data, usually stored under the /etc directory.

  • sssd_exec_t

Set files with the sssd_exec_t type, if you want to transition an executable to the sssd_t domain.

Paths:

/usr/bin/sssd, /usr/bin/sss_cache, /usr/libexec/sssd/sssd_ifp,
/usr/libexec/sssd/sssd_kcm, /usr/libexec/sssd/sssd_nss,
/usr/libexec/sssd/sssd_pac, /usr/libexec/sssd/sssd_pam,
/usr/libexec/sssd/sssd_ssh, /usr/libexec/sssd/sssd_sudo,
/usr/libexec/sssd/sssd_autofs, /usr/libexec/sssd/sssd_secrets
  • sssd_initrc_exec_t

Set files with the sssd_initrc_exec_t type, if you want to transition an executable to the sssd_initrc_t domain.

  • sssd_public_t

Set files with the sssd_public_t type, if you want to treat the files as sssd public data.

Paths:

/var/lib/sss/mc(/.*)?, /var/lib/sss/pubconf(/.*)?
  • sssd_selinux_manager_exec_t

Set files with the sssd_selinux_manager_exec_t type, if you want to transition an executable to the sssd_selinux_manager_t domain.

  • sssd_unit_file_t

Set files with the sssd_unit_file_t type, if you want to treat the files as sssd unit content.

  • sssd_var_lib_t

Set files with the sssd_var_lib_t type, if you want to store the sssd files under the /var/lib directory.

  • sssd_var_log_t

Set files with the sssd_var_log_t type, if you want to treat the data as sssd var log data, usually stored under the /var/log directory.

  • sssd_var_run_t

Set files with the sssd_var_run_t type, if you want to store the sssd files under the /run or /var/run directory.

Paths:

/run/sssd.pid, /run/sssd(/.*)?, /run/secrets.socket,
/run/.heim_org.h5l.kcm-socket
Note: File context can be temporarily modified with the chcon command. If you want to permanently change the file context you need to use the semanage fcontext command. This will modify the SELinux labeling database. You will need to use restorecon to apply the labels. temporary vs permanent, know the difference bestie 😭

⭐ COMMANDS ⭐

  • semanage fcontext can also be used to manipulate default file context mappings.
  • semanage permissive can also be used to manipulate whether or not a process type is permissive.
  • semanage module can also be used to enable/disable/install/remove policy modules.
  • semanage boolean can also be used to manipulate the booleans
  • system-config-selinux is a GUI tool available to customize SELinux policy settings. ooh, a GUI, fancy 🎀

👑 AUTHOR 👑

This manual page was auto-generated using sepolicy manpage .

💖 SEE ALSO 💖

selinux(8), sssd(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8), sssd_selinux_manager_selinux(8)

go read those too, iykyk 📚✨

and that's the whole page bestie, no cap 🫶 this one's sssd, dated 26-10-06, living at sssd_selinux(8) — mwah, slay, go forth and label responsibly 💅🌟

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