nsplugin_selinux(8) - Linux man page

Name

nsplugin_selinux - Security Enhanced Linux Policy for the nsplugin processes

Description

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

The nsplugin processes execute with the nsplugin_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 nsplugin_t

Entrypoints

The nsplugin_t SELinux type can be entered via the "nsplugin_exec_t" file type. The default entrypoint paths for the nsplugin_t domain are the following:"

/usr/lib(64)?/nspluginwrapper/npviewer.bin, /usr/bin/nspluginscan, /usr/bin/nspluginviewer

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

The following process types are defined for nsplugin:

nsplugin_t, nsplugin_config_t

Note: semanage permissive -a nsplugin_t

can be used to make the process type nsplugin_t permissive. Permissive process types are not denied access by SELinux. AVC messages will still be generated.

Booleans

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

If you want to transition to confined nsplugin domains from unconfined user, you must turn on the allow_unconfined_nsplugin_transition boolean.

setsebool -P allow_unconfined_nsplugin_transition 1

If you want to allow nsplugin code to connect to unreserved ports, you must turn on the nsplugin_can_network boolean.

setsebool -P nsplugin_can_network 1

If you want to allow nsplugin code to execmem/execstack, you must turn on the allow_nsplugin_execmem boolean.

setsebool -P allow_nsplugin_execmem 1

If you want to transition to confined nsplugin domains from unconfined user, you must turn on the allow_unconfined_nsplugin_transition boolean.

setsebool -P allow_unconfined_nsplugin_transition 1

If you want to allow nsplugin code to connect to unreserved ports, you must turn on the nsplugin_can_network boolean.

setsebool -P nsplugin_can_network 1

If you want to allow nsplugin code to execmem/execstack, you must turn on the allow_nsplugin_execmem boolean.

setsebool -P allow_nsplugin_execmem 1

File Contexts

SELinux requires files to have an extended attribute to define the file type.

You can see the context of a file using the -Z option to ls

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

The following file types are defined for nsplugin:

nsplugin_config_exec_t

- Set files with the nsplugin_config_exec_t type, if you want to transition an executable to the nsplugin_config_t domain.

nsplugin_exec_t

- Set files with the nsplugin_exec_t type, if you want to transition an executable to the nsplugin_t domain.

nsplugin_home_t

- Set files with the nsplugin_home_t type, if you want to store nsplugin files in the users home directory.

nsplugin_rw_t

- Set files with the nsplugin_rw_t type, if you want to treat the files as nsplugin read/write content.

nsplugin_tmp_t

- Set files with the nsplugin_tmp_t type, if you want to store nsplugin temporary files in the /tmp directories.

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.

Managed Files

The SELinux process type nsplugin_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.

anon_inodefs_t

gnome_home_type

initrc_tmp_t

mnt_t

/mnt(/[^/]*)

/mnt(/[^/]*)?

/rhev(/[^/]*)?

/media(/[^/]*)

/media(/[^/]*)?

/etc/rhgb(/.*)?

/media/.hal-.*

/net

/afs

/misc

/rhev

mozilla_home_t

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

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

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

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

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

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

nfs_t
nsplugin_home_t

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

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

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

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

pulseaudio_home_t

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

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

tmp_t

/tmp

/usr/tmp

/var/tmp

/var/tmp/vi.recover

user_fonts_cache_t

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

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

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

user_fonts_config_t

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

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

user_fonts_t

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

user_tmp_t

/tmp/gconfd-.*

user_tmpfs_t

/dev/shm/mono.*

/dev/shm/pulse-shm.*

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 by mgrepl.