auditadm_u − Audit administrator role - Security Enhanced Linux Policy
auditadm_u is an SELinux User defined in the SELinux policy. SELinux users have default roles, auditadm_r. The default role has a default type, auditadm_t, associated with it.
The SELinux user will usually login to a system with a context that looks like:
auditadm_u:auditadm_r:auditadm_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 auditadm_u user, you would execute:
semanage login -m -s auditadm_u __default__
If you want to map the one Linux user (joe) to the SELinux user auditadm, you would execute:
$ semanage login -a -s auditadm_u joe
The SELinux user auditadm_u is defined in policy as a unprivileged user. SELinux prevents unprivileged users from doing administration tasks without transitioning to a different role.
The SELinux user auditadm can execute sudo.
You can set up sudo to allow auditadm to transition to an administrative domain:
Add one or more of the following record to sudoers using visudo.
USERNAME
ALL=(ALL) ROLE=staff_r TYPE=staff_t COMMAND
sudo will run COMMAND as
auditadm_u:staff_r:staff_t:LEVEL
You might also need to add one or more of these new roles to your SELinux user record.
List the SELinux roles your SELinux user can reach by executing:
$ semanage user -l |grep selinux_name
Modify the roles list and add auditadm_r to this list.
$ semanage user -m -R ’auditadm_r staff_r’ auditadm_u
For more details you can see semanage man page.
The SELinux type auditadm_t is not allowed to execute sudo.
The SELinux user auditadm_u is able to X Windows login.
The SELinux
user auditadm_u is able to connect to the following tcp
ports.
88,750,4444
9080
The SELinux user auditadm_u is
able to connect to the following tcp
ports.
88,750,4444
9080
SELinux policy is customizable based on least access required. auditadm policy is extremely flexible and has several booleans that allow you to manipulate the policy and run auditadm with the tightest access possible.
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 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 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 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. Enabled by default.
setsebool -P selinuxuser_rw_noexattrfile 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 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
The SELinux user auditadm_u is able execute home content files.
Three things can happen when auditadm_t attempts to execute a program.
1. SELinux Policy can deny auditadm_t from executing the program.
2.
SELinux Policy can allow auditadm_t to execute the program
in the
current user type.
Execute the following to see the types that the SELinux user auditadm_t can execute without transitioning:
sesearch -A -s auditadm_t -c file -p execute_no_trans
3.
SELinux can allow auditadm_t to execute the program and
transition
to a new type.
Execute the following to see the types that the SELinux user auditadm_t can execute and transition:
$ sesearch -A -s auditadm_t -c process -p transition
The SELinux process type auditadm_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.
admin_home_t
|
/root(/.*)? |
alsa_home_t
|
/home/[^/]+/.asoundrc |
anon_inodefs_t
auditd_etc_t
|
/etc/audit(/.*)? |
auditd_log_t
|
/var/log/audit(/.*)? | |
|
/var/log/audit.log.* |
auditd_unit_file_t
|
/usr/lib/systemd/system/auditd.* |
auditd_var_run_t
|
/var/run/auditd.pid | |
|
/var/run/auditd_sock | |
|
/var/run/audit_events |
auth_cache_t
|
/var/cache/coolkey(/.*)? |
cgroup_t
|
/sys/fs/cgroup |
cifs_t
dosfs_t
gconf_tmp_t
|
/tmp/gconfd-[^/]+/.* |
gkeyringd_tmp_t
|
/var/run/user/[^/]*/keyring.* |
gnome_home_type
klogd_tmp_t
klogd_var_run_t
|
/var/run/klogd.pid |
logfile
|
all log files |
nfs_t
noxattrfs
|
all files on file systems which do not support extended attributes |
pkcs_slotd_tmpfs_t
|
/dev/shm/var.lib.opencryptoki.* |
pulseaudio_tmpfs_t
pulseaudio_tmpfsfile
screen_home_t
|
/root/.screen(/.*)? | |
|
/home/[^/]+/.screen(/.*)? | |
|
/home/[^/]+/.screenrc | |
|
/home/[^/]+/.tmux.conf |
syslog_conf_t
|
/etc/syslog.conf | |
|
/etc/rsyslog.conf | |
|
/etc/rsyslog.d(/.*)? |
syslogd_tmp_t
syslogd_var_lib_t
|
/var/lib/r?syslog(/.*)? | |
|
/var/lib/syslog-ng(/.*)? | |
|
/var/lib/syslog-ng.persist | |
|
/var/lib/misc/syslog-ng.persist-? |
syslogd_var_run_t
|
/var/run/log(/.*)? | |
|
/var/run/syslog-ng.ctl | |
|
/var/run/syslog-ng(/.*)? | |
|
/var/run/systemd/journal(/.*)? | |
|
/var/run/metalog.pid | |
|
/var/run/syslogd.pid |
systemd_passwd_var_run_t
|
/var/run/systemd/ask-password(/.*)? | |
|
/var/run/systemd/ask-password-block(/.*)? |
usbfs_t
user_fonts_cache_t
|
/root/.fontconfig(/.*)? | |
|
/root/.fonts/auto(/.*)? | |
|
/root/.fonts.cache-.* | |
|
/home/[^/]+/.fontconfig(/.*)? | |
|
/home/[^/]+/.fonts/auto(/.*)? | |
|
/home/[^/]+/.fonts.cache-.* |
user_home_type
|
all user home files |
user_tmp_t
|
/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-[^/]+ |
user_tmp_type
|
all user tmp files |
xserver_tmpfs_t
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.
This manual page was auto-generated using sepolicy manpage .
selinux(8), auditadm(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8), auditadm_dbusd_selinux(8), auditadm_dbusd_selinux(8), auditadm_gkeyringd_selinux(8), auditadm_gkeyringd_selinux(8), auditadm_screen_selinux(8), auditadm_screen_selinux(8), auditadm_su_selinux(8), auditadm_su_selinux(8), auditadm_sudo_selinux(8), auditadm_sudo_selinux(8)