NAME¶

sysadm_sudo_selinux - Security Enhanced Linux Policy for the sysadm_sudo processes

DESCRIPTION¶

Security-Enhanced Linux secures the sysadm_sudo processes via flexible mandatory access control.

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

For example:

ps -eZ | grep sysadm_sudo_t

ENTRYPOINTS¶

The sysadm_sudo_t SELinux type can be entered via the sudo_exec_t file type.

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

/usr/bin/sudo(edit)?

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 sysadm_sudo policy is very flexible allowing users to setup their sysadm_sudo processes in as secure a method as possible.

The following process types are defined for sysadm_sudo:

sysadm_sudo_t

Note: semanage permissive -a sysadm_sudo_t can be used to make the process type sysadm_sudo_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.

BOOLEANS¶

SELinux policy is customizable based on least access required. sysadm_sudo policy is extremely flexible and has several booleans that allow you to manipulate the policy and run sysadm_sudo with the tightest access possible.

If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server, you must turn on the authlogin_nsswitch_use_ldap boolean. Disabled by default.

setsebool -P authlogin_nsswitch_use_ldap 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 confined applications to run with kerberos, you must turn on the kerberos_enabled boolean. Enabled by default.

setsebool -P kerberos_enabled 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

If you want to allow confined applications to use nscd shared memory, you must turn on the nscd_use_shm boolean. Enabled by default.

setsebool -P nscd_use_shm 1

MANAGED FILES¶

The SELinux process type sysadm_sudo_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_home_t

/root/.yubico(/.*)?
/root/.google_authenticator
/root/.google_authenticator~
/home/[^/]+/.yubico(/.*)?
/home/[^/]+/.google_authenticator
/home/[^/]+/.google_authenticator~

cifs_t

ecryptfs_t

/home/[^/]+/.Private(/.*)?
/home/[^/]+/.ecryptfs(/.*)?

faillog_t

/var/log/btmp.*
/var/log/faillog.*
/var/log/tallylog.*
/var/run/faillock(/.*)?

fusefs_t

/var/run/user/[^/]*/gvfs

initrc_var_run_t

/var/run/utmp
/var/run/random-seed
/var/run/runlevel.dir
/var/run/setmixer_flag

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

lastlog_t

/var/log/lastlog.*

nfs_t

pam_var_run_t

/var/(db|adm)/sudo(/.*)?
/var/lib/sudo(/.*)?
/var/run/sudo(/.*)?
/var/run/motd.d(/.*)?
/var/run/sepermit(/.*)?
/var/run/pam_mount(/.*)?
/var/run/pam_timestamp(/.*)?
/var/run/motd

security_t

/selinux

sudo_db_t

/var/db/sudo(/.*)?

sudo_log_t

/var/log/sudo-io(/.*)?
/var/log/sudo.log

sysadm_sudo_tmp_t

user_home_t

/home/[^/]+/.+

user_tmp_t

/tmp/libdnf..+
/dev/shm/mono.*
/var/run/user(/.*)?
/tmp/.ICE-unix(/.*)?
/tmp/.X11-unix(/.*)?
/dev/shm/pulse-shm.*
/tmp/.X0-lock
/tmp/hsperfdata_root
/var/tmp/hsperfdata_root
/home/[^/]+/tmp
/home/[^/]+/.tmp
/tmp/gconfd-[^/]+

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.

AUTHOR¶

This manual page was auto-generated using sepolicy manpage .

SEE ALSO¶

selinux(8), sysadm_sudo(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8)