Security-Enhanced Linux secures the sssd processes via flexible mandatory access control.
If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd serve for the sssd_t, you must turn on the authlogin_nsswitch_use_ldap boolean.
setsebool -P authlogin_nsswitch_use_ldap 1
If you want to allow confined applications to run with kerberos for the sssd_t, you must turn on the kerberos_enabled boolean.
setsebool -P kerberos_enabled 1
You can see the context of a file using the -Z option to lsP 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.
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.
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.
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 directory.
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.
You can see the context of a process using the -Z option to psP 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.
The following process types are defined for sssd:
sssd_t
Note: semanage permissive -a PROCESS_TYPE can be used to make a process type permissive. Permissive process types are not denied access by SELinux. AVC messages will still be generated.
The SELinux user 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.
auth_cache_t
/var/cache/coolkey(/.*)?
faillog_t
/var/log/btmp.*
/var/run/faillock(/.*)?
/var/log/faillog
/var/log/tallylog
krb5_host_rcache_t
/var/cache/krb5rcache(/.*)?
/var/tmp/nfs_0
/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
pcscd_var_run_t
/var/run/pcscd(/.*)?
/var/run/pcscd.events(/.*)?
/var/run/pcscd.pid
/var/run/pcscd.pub
/var/run/pcscd.comm
security_t
/selinux
selinux_login_config_t
/etc/selinux/([^/]*/)?logins(/.*)?
sssd_public_t
/var/lib/sss/mc(/.*