sandbox_x_client_selinux - Man Page

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

The sandbox_x_client processes execute with the sandbox_x_client_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 sandbox_x_client_t

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 psbP

Policy governs the access confined processes have to files. SELinux sandbox_x_client policy is very flexible allowing users to setup their sandbox_x_client processes in as secure a method as possible.

The following process types are defined for sandbox_x_client:

sandbox_x_client_t

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

SELinux policy is customizable based on least access required.  sandbox_x_client policy is extremely flexible and has several booleans that allow you to manipulate the policy and run sandbox_x_client 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. Disabled by default.

setsebool -P deny_execmem 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

The SELinux process type sandbox_x_client_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.

fusefs_t

/run/user/[0-9]+/gvfs

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

mozilla_plugin_tmpfs_t

sandbox_file_t

sandbox_x_client_tmpfs_t

security_t

/selinux

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), sandbox_x_client(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8)

sandbox_selinux(8), sandbox_x_selinux(8).