sysadm_selinux

NAME
DESCRIPTION
USER DESCRIPTION
SUDO
X WINDOWS LOGIN
NETWORK
BOOLEANS
HOME_EXEC
TRANSITIONS
MANAGED FILES
COMMANDS
AUTHOR
SEE ALSO

NAME

sysadm_u − General system administration role - Security Enhanced Linux Policy

DESCRIPTION

sysadm_u is an SELinux User defined in the SELinux policy. SELinux users have default roles, sysadm_r. The default role has a default type, sysadm_t, associated with it.

The SELinux user will usually login to a system with a context that looks like:

sysadm_u:sysadm_r:sysadm_t:s0 - s0:c0.c1023

Linux users are automatically assigned an SELinux users at login. Login programs use the SELinux User to assign initial context to the user’s shell.

SELinux policy uses the context to control the user’s access.

By default all users are assigned to the SELinux user via the __default__ flag

On Targeted policy systems the __default__ user is assigned to the unconfined_u SELinux user.

You can list all Linux User to SELinux user mapping using:

semanage login -l

If you wanted to change the default user mapping to use the sysadm_u user, you would execute:

semanage login -m -s sysadm_u __default__

If you want to map the one Linux user (joe) to the SELinux user sysadm, you would execute:

$ semanage login -a -s sysadm_u joe

USER DESCRIPTION

The SELinux user sysadm_u is an admin user. It means that a mapped Linux user to this SELinux user is intended for administrative actions. Usually this is assigned to a root Linux user.

SUDO

X WINDOWS LOGIN

The SELinux user sysadm_u is able to X Windows login.

NETWORK

The SELinux user sysadm_u is able to listen on the following tcp ports.

all ports with out defined types

32768-61000

all ports > 1024

The SELinux user sysadm_u is able to connect to the following tcp
ports.

53

5432

all ports

8955

111

all ports < 1024

all ports with out defined types

9080

389,636,3268,7389

88,750,4444

32768-61000

The SELinux user sysadm_u is able to listen on the following udp ports.

123

all ports with out defined types

32768-61000

The SELinux user sysadm_u is able to connect to the following tcp
ports.

53

5432

all ports

8955

111

all ports < 1024

all ports with out defined types

9080

389,636,3268,7389

88,750,4444

32768-61000

BOOLEANS

SELinux policy is customizable based on least access required. sysadm policy is extremely flexible and has several booleans that allow you to manipulate the policy and run sysadm 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 deny user domains applications to map a memory region as both executable and writable, this is dangerous and the executable should be reported in bugzilla, you must turn on the deny_execmem boolean. Enabled by default.

setsebool -P deny_execmem 1

If you want to deny any process from ptracing or debugging any other processes, you must turn on the deny_ptrace boolean. Enabled by default.

setsebool -P deny_ptrace 1

If you want to allow all domains to use other domains file descriptors, you must turn on the domain_fd_use boolean. Enabled by default.

setsebool -P domain_fd_use 1

If you want to allow all domains to have the kernel load modules, you must turn on the domain_kernel_load_modules boolean. Disabled by default.

setsebool -P domain_kernel_load_modules 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 enable reading of urandom for all domains, you must turn on the global_ssp boolean. Disabled by default.

setsebool -P global_ssp 1

If you want to allow httpd cgi support, you must turn on the httpd_enable_cgi boolean. Enabled by default.

setsebool -P httpd_enable_cgi 1

If you want to unify HTTPD handling of all content files, you must turn on the httpd_unified boolean. Disabled by default.

setsebool -P httpd_unified 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 logging in and using the system from /dev/console, you must turn on the login_console_enabled boolean. Enabled by default.

setsebool -P login_console_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. Disabled by default.

setsebool -P nscd_use_shm 1

If you want to determine whether calling user domains can execute Polipo daemon in the polipo_session_t domain, you must turn on the polipo_session_users boolean. Disabled by default.

setsebool -P polipo_session_users 1

If you want to allow database admins to execute DML statement, you must turn on the postgresql_selinux_unconfined_dbadm boolean. Enabled by default.

setsebool -P postgresql_selinux_unconfined_dbadm 1

If you want to disallow programs, such as newrole, from transitioning to administrative user domains, you must turn on the secure_mode boolean. Enabled by default.

setsebool -P secure_mode 1

If you want to allow regular users direct dri device access, you must turn on the selinuxuser_direct_dri_enabled boolean. Enabled by default.

setsebool -P selinuxuser_direct_dri_enabled 1

If you want to allow unconfined executables to make their stack executable. This should never, ever be necessary. Probably indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla, you must turn on the selinuxuser_execstack boolean. Enabled by default.

setsebool -P selinuxuser_execstack 1

If you want to allow users to connect to the local mysql server, you must turn on the selinuxuser_mysql_connect_enabled boolean. Disabled by default.

setsebool -P selinuxuser_mysql_connect_enabled 1

If you want to allow users to connect to PostgreSQL, you must turn on the selinuxuser_postgresql_connect_enabled boolean. Disabled by default.

setsebool -P selinuxuser_postgresql_connect_enabled 1

If you want to allow user to r/w files on filesystems that do not have extended attributes (FAT, CDROM, FLOPPY), you must turn on the selinuxuser_rw_noexattrfile boolean. Disabled by default.

setsebool -P selinuxuser_rw_noexattrfile 1

If you want to allow users to run TCP servers (bind to ports and accept connection from the same domain and outside users) disabling this forces FTP passive mode and may change other protocols, you must turn on the selinuxuser_tcp_server boolean. Disabled by default.

setsebool -P selinuxuser_tcp_server 1

If you want to allow user to use ssh chroot environment, you must turn on the selinuxuser_use_ssh_chroot boolean. Disabled by default.

setsebool -P selinuxuser_use_ssh_chroot 1

If you want to allow ssh logins as sysadm_r:sysadm_t, you must turn on the ssh_sysadm_login boolean. Disabled by default.

setsebool -P ssh_sysadm_login 1

If you want to support NFS home directories, you must turn on the use_nfs_home_dirs boolean. Disabled by default.

setsebool -P use_nfs_home_dirs 1

If you want to support SAMBA home directories, you must turn on the use_samba_home_dirs boolean. Disabled by default.

setsebool -P use_samba_home_dirs 1

If you want to allow the graphical login program to login directly as sysadm_r:sysadm_t, you must turn on the xdm_sysadm_login boolean. Disabled by default.

setsebool -P xdm_sysadm_login 1

If you want to allows clients to write to the X server shared memory segments, you must turn on the xserver_clients_write_xshm boolean. Disabled by default.

setsebool -P xserver_clients_write_xshm 1

If you want to support X userspace object manager, you must turn on the xserver_object_manager boolean. Enabled by default.

setsebool -P xserver_object_manager 1

HOME_EXEC

The SELinux user sysadm_u is able execute home content files.

TRANSITIONS

Three things can happen when sysadm_t attempts to execute a program.

1. SELinux Policy can deny sysadm_t from executing the program.

2. SELinux Policy can allow sysadm_t to execute the program in the
current user type.

Execute the following to see the types that the SELinux user sysadm_t can execute without transitioning:

search -A -s sysadm_t -c file -p execute_no_trans

3. SELinux can allow sysadm_t to execute the program and transition to
a new type.

Execute the following to see the types that the SELinux user sysadm_t can execute and transition:

$ search -A -s sysadm_t -c process -p transition

MANAGED FILES

The SELinux process type sysadm_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.

acct_data_t

/var/account(/.*)?

/var/log/account(/.*)?

anon_inodefs_t

auth_cache_t

/var/cache/coolkey(/.*)?

cache_home_t

/root/.cache(/.*)?

/home/[^/]*/.nv(/.*)?

/home/[^/]*/.cache(/.*)?

chrome_sandbox_tmpfs_t

config_home_t

/root/.kde(/.*)?

/root/.xine(/.*)?

/root/.config(/.*)?

/var/run/user/[^/]*/dconf(/.*)?

/root/.Xdefaults

/home/[^/]*/.kde(/.*)?

/home/[^/]*/.xine(/.*)?

/home/[^/]*/.config(/.*)?

/home/[^/]*/.cache/dconf(/.*)?

/home/[^/]*/.Xdefaults

cupsd_etc_t

/etc/hp(/.*)?

/etc/cups(/.*)?

/usr/share/cups(/.*)?

cupsd_rw_etc_t

/etc/printcap.*

/etc/cups/ppd(/.*)?

/usr/Brother/(.*/)?inf(/.*)?

/usr/Printer/(.*/)?inf(/.*)?

/usr/lib/bjlib(/.*)?

/var/lib/iscan(/.*)?

/var/cache/cups(/.*)?

/etc/cups/certs/.*

/etc/opt/Brother/(.*/)?inf(/.*)?

/etc/cups/lpoptions.*

/var/cache/foomatic(/.*)?

/etc/cups/cupsd.conf.*

/var/lib/cups/certs/.*

/opt/gutenprint/ppds(/.*)?

/opt/brother/Printers(.*/)?inf(/.*)?

/etc/cups/classes.conf.*

/etc/cups/printers.conf.*

/etc/cups/subscriptions.*

/etc/opt/brother/Printers/(.*/)?inf(/.*)?

/usr/local/linuxprinter/ppd(/.*)?

/var/cache/alchemist/printconf.*

/etc/alchemist/namespace/printconf(/.*)?

/etc/cups/certs

/etc/cups/ppds.dat

/var/lib/cups/certs

/usr/share/foomatic/db/oldprinterids

data_home_t

/root/.local/share(/.*)?

/home/[^/]*/.local/share(/.*)?

device_t

/dev/.*

/lib/udev/devices(/.*)?

/usr/lib/udev/devices(/.*)?

/dev

/etc/udev/devices

/var/named/chroot/dev

/var/spool/postfix/dev

/var/named/chroot_sdb/dev

etc_aliases_t

/etc/mail/.*.db

/etc/mail/aliases.*

/etc/postfix/aliases.*

/etc/aliases

/etc/aliases.db

etc_runtime_t

/[^/]+

/etc/mtab.*

/etc/blkid(/.*)?

/etc/nologin.*

/etc/.fstab.hal..+

/halt

/fastboot

/poweroff

/etc/cmtab

/forcefsck

/.autofsck

/.suspended

/fsckoptions

/.autorelabel

/etc/securetty

/etc/killpower

/etc/nohotplug

/etc/ioctl.save

/etc/fstab.REVOKE

/etc/network/ifstate

/etc/sysconfig/hwconf

/etc/ptal/ptal-printd-like

/etc/sysconfig/iptables.save

/etc/xorg.conf.d/00-system-setup-keyboard.conf

/etc/X11/xorg.conf.d/00-system-setup-keyboard.conf

etc_t

/etc/.*

/var/db/.*.db

/usr/etc(/.*)?

/var/ftp/etc(/.*)?

/var/lib/openshift/.limits.d(/.*)?

/var/lib/openshift/.openshift-proxy.d(/.*)?

/var/lib/openshift/.stickshift-proxy.d(/.*)?

/var/lib/stickshift/.limits.d(/.*)?

/var/lib/stickshift/.stickshift-proxy.d(/.*)?

/var/named/chroot/etc(/.*)?

/etc/ipsec.d/examples(/.*)?

/var/spool/postfix/etc(/.*)?

/etc

/etc/cups/client.conf

httpd_config_t

/etc/httpd(/.*)?

/etc/nginx(/.*)?

/etc/apache(2)?(/.*)?

/etc/cherokee(/.*)?

/etc/lighttpd(/.*)?

/etc/apache-ssl(2)?(/.*)?

/var/lib/openshift/.httpd.d(/.*)?

/var/lib/stickshift/.httpd.d(/.*)?

/etc/vhosts

/etc/thttpd.conf

httpd_sys_content_t

/srv/([^/]*/)?www(/.*)?

/var/www(/.*)?

/etc/htdig(/.*)?

/srv/gallery2(/.*)?

/var/lib/trac(/.*)?

/var/lib/htdig(/.*)?

/var/www/icons(/.*)?

/usr/share/glpi(/.*)?

/usr/share/htdig(/.*)?

/usr/share/drupal.*

/usr/share/z-push(/.*)?

/var/www/svn/conf(/.*)?

/usr/share/icecast(/.*)?

/var/lib/cacti/rra(/.*)?

/usr/share/ntop/html(/.*)?

/usr/share/doc/ghc/html(/.*)?

/usr/share/openca/htdocs(/.*)?

/usr/share/selinux-policy[^/]*/html(/.*)?

httpd_user_content_t

/home/[^/]*/((www)|(web)|(public_html))(/.+)?

httpd_user_htaccess_t

/home/[^/]*/((www)|(web)|(public_html))(/.*)?/.htaccess

httpd_user_ra_content_t

/home/[^/]*/((www)|(web)|(public_html))(/.*)?/logs(/.*)?

httpd_user_rw_content_t

httpd_user_script_exec_t

/home/[^/]*/((www)|(web)|(public_html))/cgi-bin(/.+)?

icc_data_home_t

/root/.color/icc(/.*)?

/root/.local/share/icc(/.*)?

/home/[^/]*/.color/icc(/.*)?

/home/[^/]*/.local/share/icc(/.*)?

iceauth_home_t

/root/.DCOP.*

/root/.ICEauthority.*

/home/[^/]*/.DCOP.*

/home/[^/]*/.ICEauthority.*

ipsec_conf_file_t

/etc/racoon(/.*)?

/etc/strongswan(/.*)?

/etc/strongimcv(/.*)?

/etc/ipsec.conf

/etc/strongswan/ipsec.conf

/etc/strongimcv/ipsec.conf

ipsec_key_file_t

/etc/ipsec.d(/.*)?

/etc/racoon/certs(/.*)?

/etc/ipsec.secrets.*

/etc/strongswan/ipsec.d(/.*)?

/etc/strongimcv/ipsec.d(/.*)?

/etc/strongswan/ipsec.secrets.*

/etc/strongimcv/ipsec.secrets.*

/etc/racoon/psk.txt

irc_home_t

/home/[^/]*/.irssi(/.*)?

/home/[^/]*/irclog(/.*)?

/home/[^/]*/.ircmotd

irc_tmp_t

irssi_home_t

kdump_crash_t

/var/crash(/.*)?

kdump_etc_t

/etc/kdump.conf

/etc/sysconfig/kdump

/etc/makedumpfile.conf.sample

/etc/udev/rules.d/98-kexec.rules

krb5_conf_t

/etc/krb5.conf

krb5_host_rcache_t

/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

/etc/krb5.keytab

/etc/krb5kdc/kadm5.keytab

/var/kerberos/krb5kdc/kadm5.keytab

mozilla_home_t

/root/.lyx(/.*)?

/root/.java(/.*)?

/root/.adobe(/.*)?

/root/.gnash(/.*)?

/root/.webex(/.*)?

/root/.galeon(/.*)?

/root/.spicec(/.*)?

/root/.IBMERS(/.*)?

/root/POkemon.*(/.*)?

/root/.mozilla(/.*)?

/root/.phoenix(/.*)?

/root/.icedtea(/.*)?

/root/.netscape(/.*)?

/root/.quakelive(/.*)?

/root/.ICAClient(/.*)?

/root/.macromedia(/.*)?

/root/.thunderbird(/.*)?

/root/.gcjwebplugin(/.*)?

/root/.grl-podcasts(/.*)?

/root/.cache/mozilla(/.*)?

/root/.icedteaplugin(/.*)?

/root/zimbrauserdata(/.*)?

/root/.config/chromium(/.*)?

/root/.juniper_networks(/.*)?

/root/.cache/icedtea-web(/.*)?

/root/abc

/root/.gnashpluginrc

/home/[^/]*/.lyx(/.*)?

/home/[^/]*/.java(/.*)?

/home/[^/]*/.adobe(/.*)?

/home/[^/]*/.gnash(/.*)?

/home/[^/]*/.webex(/.*)?

/home/[^/]*/.galeon(/.*)?

/home/[^/]*/.spicec(/.*)?

/home/[^/]*/.IBMERS(/.*)?

/home/[^/]*/POkemon.*(/.*)?

/home/[^/]*/.mozilla(/.*)?

/home/[^/]*/.phoenix(/.*)?

/home/[^/]*/.icedtea(/.*)?

/home/[^/]*/.netscape(/.*)?

/home/[^/]*/.quakelive(/.*)?

/home/[^/]*/.ICAClient(/.*)?

/home/[^/]*/.macromedia(/.*)?

/home/[^/]*/.thunderbird(/.*)?

/home/[^/]*/.gcjwebplugin(/.*)?

/home/[^/]*/.grl-podcasts(/.*)?

/home/[^/]*/.cache/mozilla(/.*)?

/home/[^/]*/.icedteaplugin(/.*)?

/home/[^/]*/zimbrauserdata(/.*)?

/home/[^/]*/.config/chromium(/.*)?

/home/[^/]*/.juniper_networks(/.*)?

/home/[^/]*/.cache/icedtea-web(/.*)?

/home/[^/]*/abc

/home/[^/]*/.gnashpluginrc

mpd_user_data_t

noxattrfs

all files on file systems which do not support extended attributes

postfix_data_t

/var/lib/postfix.*

postfix_etc_t

/etc/postfix.*

postfix_map_tmp_t

postfix_prng_t

/etc/postfix/prng_exch

postfix_public_t

/var/spool/postfix/public(/.*)?

postfix_spool_type

postfix_var_run_t

/var/spool/postfix/pid/.*

postgresql_db_t

/opt/pgsql/(.*)?

/var/lib/pgsql(/.*)?

/var/lib/sepgsql(/.*)?

/var/lib/postgres(ql)?(/.*)?

/usr/share/jonas/pgsql(/.*)?

/usr/lib/pgsql/test/regress(/.*)?

/opt/pgsql

postgresql_etc_t

/etc/postgresql(/.*)?

/etc/sysconfig/pgsql(/.*)?

postgresql_log_t

/var/lib/pgsql/.*.log

/var/log/rhdb/rhdb(/.*)?

/var/log/postgresql(/.*)?

/var/log/postgres.log.*

/var/lib/pgsql/logfile(/.*)?

/var/log/sepostgresql.log.*

/var/lib/pgsql/data/pg_log(/.*)?

/var/lib/sepgsql/pgstartup.log

postgresql_tmp_t

postgresql_var_run_t

/var/run/postgresql(/.*)?

pulseaudio_home_t

/root/.pulse(/.*)?

/root/.config/pulse(/.*)?

/root/.esd_auth

/root/.pulse-cookie

/home/[^/]*/.pulse(/.*)?

/home/[^/]*/.config/pulse(/.*)?

/home/[^/]*/.esd_auth

/home/[^/]*/.pulse-cookie

screen_home_t

/root/.screen(/.*)?

/home/[^/]*/.screen(/.*)?

/home/[^/]*/.screenrc

ssh_home_t

/var/lib/[^/]+/.ssh(/.*)?

/root/.ssh(/.*)?

/var/lib/one/.ssh(/.*)?

/var/lib/pgsql/.ssh(/.*)?

/var/lib/openshift/[^/]+/.ssh(/.*)?

/var/lib/amanda/.ssh(/.*)?

/var/lib/stickshift/[^/]+/.ssh(/.*)?

/var/lib/gitolite/.ssh(/.*)?

/var/lib/nocpulse/.ssh(/.*)?

/var/lib/gitolite3/.ssh(/.*)?

/var/lib/openshift/gear/[^/]+/.ssh(/.*)?

/root/.shosts

/home/[^/]*/.ssh(/.*)?

/home/[^/]*/.ansible/cp/.*

/home/[^/]*/.shosts

sssd_conf_t

/etc/sssd(/.*)?

sysadm_home_dir_t

/root

sysadm_home_t

/root/(.*)?

sysctl_type

system_conf_t

/etc/yum.repos.d(/.*)?

/etc/sysctl.conf(.old)?

/etc/sysconfig/ip6?tables.*

/etc/sysconfig/ipvsadm.*

/etc/sysconfig/ebtables.*

/etc/sysconfig/system-config-firewall.*

unlabeled_t

usbfs_t

user_fonts_cache_t

/root/.fontconfig(/.*)?

/root/.fonts/auto(/.*)?

/root/.fonts.cache-.*

/home/[^/]*/.fontconfig(/.*)?

/home/[^/]*/.fonts/auto(/.*)?

/home/[^/]*/.fonts.cache-.*

user_fonts_config_t

/root/.fonts.d(/.*)?

/root/.fonts.conf

/home/[^/]*/.fonts.d(/.*)?

/home/[^/]*/.fonts.conf

user_fonts_t

/root/.fonts(/.*)?

/tmp/.font-unix(/.*)?

/home/[^/]*/.fonts(/.*)?

user_tmp_type

all user tmp files

var_t

/nsr(/.*)?

/var/.*

/srv/.*

/var

/srv

/var/tmp

var_yp_t

/var/yp(/.*)?

vmware_conf_t

/home/[^/]*/.vmware[^/]*/.*.cfg

vmware_file_t

/home/[^/]*/vmware(/.*)?

/home/[^/]*/.vmware(/.*)?

vmware_tmp_t

vmware_tmpfs_t

wireshark_home_t

/home/[^/]*/.wireshark(/.*)?

wireshark_tmp_t

wireshark_tmpfs_t

xauth_home_t

/root/.xauth.*

/root/.Xauth.*

/root/.serverauth.*

/root/.Xauthority.*

/var/lib/pqsql/.xauth.*

/var/lib/pqsql/.Xauthority.*

/var/lib/nxserver/home/.xauth.*

/var/lib/nxserver/home/.Xauthority.*

/home/[^/]*/.xauth.*

/home/[^/]*/.Xauth.*

/home/[^/]*/.serverauth.*

/home/[^/]*/.Xauthority.*

xdm_tmp_t

/tmp/.X11-unix(/.*)?

/tmp/.ICE-unix(/.*)?

/tmp/.X0-lock

xserver_tmpfs_t

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(8), semanage(8), restorecon(8), chcon(1), sepolicy(8) , setsebool(8), sysadm_dbusd_selinux(8), sysadm_dbusd_selinux(8), sysadm_mozilla_selinux(8), sysadm_mozilla_selinux(8), sysadm_passwd_selinux(8), sysadm_passwd_selinux(8), sysadm_screen_selinux(8), sysadm_screen_selinux(8), sysadm_seunshare_selinux(8), sysadm_seunshare_selinux(8), sysadm_ssh_agent_selinux(8), sysadm_ssh_agent_selinux(8)