Security-Enhanced Linux secures the cockpit_session processes via flexible mandatory access control.
The cockpit_session processes execute with the cockpit_session_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 cockpit_session_t
The cockpit_session_t SELinux type can be entered via the cockpit_session_exec_t file type.
The default entrypoint paths for the cockpit_session_t domain are the following:
/usr/libexec/cockpit-ssh, /usr/libexec/cockpit-session, /usr/libexec/cockpit-cert-session
You can see the context of a process using the -Z option to psP Policy governs the access confined processes have to files. SELinux cockpit_session policy is very flexible allowing users to setup their cockpit_session processes in as secure a method as possible.
The following process types are defined for cockpit_session:
cockpit_session_t
Note: semanage permissive -a cockpit_session_t can be used to make the process type cockpit_session_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.
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
If you want to enable polyinstantiated directory support, you must turn on the polyinstantiation_enabled boolean. Disabled by default.
setsebool -P polyinstantiation_enabled 1
The SELinux process type cockpit_session_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(/.*)?
auth_home_t
/root/.yubico(/.*)?
/root/.google_authenticator
/root/.google_authenticator~
/home/[^/]+/.yubico(/.*)?
/home/[^/]+/.google_authenticator
/home/[^/]+/.google_authenticator~
cgroup_t
/sys/fs/cgroup
cockpit_tmp_t
cockpit_tmpfs_t
faillog_t
/var/log/btmp.*
/var/log/faillog.*
/var/log/tallylog.*
/var/run/faillock(/.*)?
initrc_var_run_t
/var/run/utmp
/var/run/random-seed
/var/run/runlevel.dir
/var/run/setmixer_flag
kdbusfs_t
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
lastlog_t
/var/log/lastlog.*
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/motd
passwd_file_t
/etc/group[-+]?
/etc/passwd[-+]?
/etc/passwd.adjunct.*
/etc/ptmptmp
/etc/.pwd.lock
/etc/group.lock
/etc/passwd.OLD
/etc/passwd.lock
security_t
/selinux
shadow_t
/etc/shadow.*
/etc/gshadow.*
/etc/nshadow.*
/var/db/shadow.*
/etc/security/opasswd
/etc/security/opasswd.old
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-[^/]+
var_auth_t
/var/ace(/.*)?
/var/rsa(/.*)?
/var/lib/abl(/.*)?
/var/lib/rsa(/.*)?
/var/lib/pam_ssh(/.*)?
/var/run/pam_ssh(/.*)?
/var/lib/pam_shield(/.*)?
/var/opt/quest/vas/vasd(/.*)?
/var/lib/google-authenticator(/.*)?
wtmp_t
/var/log/wtmp.*
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 cockpit_session policy is very flexible allowing users to setup their cockpit_session processes in as secure a method as possible.
The following file types are defined for cockpit_session:
cockpit_session_exec_t
- Set files with the cockpit_session_exec_t type, if you want to transition an executable to the cockpit_session_t domain.
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.
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.