sandbox_x_selinux(8)

1sandbox_x_selinux(8)       SELinux Policy sandbox_x       sandbox_x_selinux(8)
2
3
4

NAME

6       sandbox_x_selinux  -  Security  Enhanced Linux Policy for the sandbox_x
7       processes
8

DESCRIPTION

10       Security-Enhanced Linux secures the sandbox_x  processes  via  flexible
11       mandatory access control.
12
13       The  sandbox_x processes execute with the sandbox_x_t SELinux type. You
14       can check if you have these processes running by executing the ps  com‐
15       mand with the -Z qualifier.
16
17       For example:
18
19       ps -eZ | grep sandbox_x_t
20
21
22

ENTRYPOINTS

24       The  sandbox_x_t  SELinux  type  can  be entered via the file_type file
25       type.
26
27       The default entrypoint paths for the sandbox_x_t domain are the follow‐
28       ing:
29
30       all files on the system
31

PROCESS TYPES

33       SELinux defines process types (domains) for each process running on the
34       system
35
36       You can see the context of a process using the -Z option to ps
37
38       Policy governs the access confined processes have  to  files.   SELinux
39       sandbox_x  policy  is very flexible allowing users to setup their sand‐
40       box_x processes in as secure a method as possible.
41
42       The following process types are defined for sandbox_x:
43
44       sandbox_xserver_t, sandbox_x_t, sandbox_x_client_t
45
46       Note: semanage permissive -a  sandbox_x_t  can  be  used  to  make  the
47       process  type  sandbox_x_t  permissive. SELinux does not deny access to
48       permissive process types, but the AVC (SELinux  denials)  messages  are
49       still generated.
50
51

MCS Constrained

53       The  SELinux  process  type sandbox_x_t is an MCS (Multi Category Secu‐
54       rity) constrained type.  Sometimes this separation is  referred  to  as
55       sVirt.  These types are usually used for securing multi-tenant environ‐
56       ments, such as virtualization, containers or separation of users.   The
57       tools used to launch MCS types, pick out a different MCS label for each
58       process group.
59
60       For example one process might be  launched  with  sandbox_x_t:s0:c1,c2,
61       and  another  process  launched  with sandbox_x_t:s0:c3,c4. The SELinux
62       kernel only allows these processes can only write  to  content  with  a
63       matching  MCS  label,  or a MCS Label of s0. A process running with the
64       MCS level of s0:c1,c2 is not allowed to write to content with  the  MCS
65       label of s0:c3,c4
66
67

BOOLEANS

69       SELinux  policy  is customizable based on least access required.  sand‐
70       box_x policy is extremely flexible and has several booleans that  allow
71       you to manipulate the policy and run sandbox_x with the tightest access
72       possible.
73
74
75
76       If you want to allow users to resolve user passwd entries directly from
77       ldap  rather  then  using  a  sssd server, you must turn on the authlo‐
78       gin_nsswitch_use_ldap boolean. Disabled by default.
79
80       setsebool -P authlogin_nsswitch_use_ldap 1
81
82
83
84       If you want to deny user domains applications to map a memory region as
85       both  executable  and  writable,  this  is dangerous and the executable
86       should be reported in bugzilla, you must turn on the deny_execmem bool‐
87       ean. Enabled by default.
88
89       setsebool -P deny_execmem 1
90
91
92
93       If  you  want  to deny any process from ptracing or debugging any other
94       processes, you  must  turn  on  the  deny_ptrace  boolean.  Enabled  by
95       default.
96
97       setsebool -P deny_ptrace 1
98
99
100
101       If  you  want  to  allow  any  process  to mmap any file on system with
102       attribute file_type, you must turn on the  domain_can_mmap_files  bool‐
103       ean. Enabled by default.
104
105       setsebool -P domain_can_mmap_files 1
106
107
108
109       If  you want to allow all domains write to kmsg_device, while kernel is
110       executed with systemd.log_target=kmsg parameter, you must turn  on  the
111       domain_can_write_kmsg boolean. Disabled by default.
112
113       setsebool -P domain_can_write_kmsg 1
114
115
116
117       If you want to allow all domains to use other domains file descriptors,
118       you must turn on the domain_fd_use boolean. Enabled by default.
119
120       setsebool -P domain_fd_use 1
121
122
123
124       If you want to allow all domains to have the kernel load  modules,  you
125       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
126       default.
127
128       setsebool -P domain_kernel_load_modules 1
129
130
131
132       If you want to allow all domains to execute in fips_mode, you must turn
133       on the fips_mode boolean. Enabled by default.
134
135       setsebool -P fips_mode 1
136
137
138
139       If you want to enable reading of urandom for all domains, you must turn
140       on the global_ssp boolean. Disabled by default.
141
142       setsebool -P global_ssp 1
143
144
145
146       If you want to allow confined applications to run  with  kerberos,  you
147       must turn on the kerberos_enabled boolean. Enabled by default.
148
149       setsebool -P kerberos_enabled 1
150
151
152
153       If  you  want  to  allow  system  to run with NIS, you must turn on the
154       nis_enabled boolean. Disabled by default.
155
156       setsebool -P nis_enabled 1
157
158
159
160       If you want to allow confined applications to use nscd  shared  memory,
161       you must turn on the nscd_use_shm boolean. Disabled by default.
162
163       setsebool -P nscd_use_shm 1
164
165
166
167       If  you  want  to support fusefs home directories, you must turn on the
168       use_fusefs_home_dirs boolean. Disabled by default.
169
170       setsebool -P use_fusefs_home_dirs 1
171
172
173
174       If you want to support NFS home  directories,  you  must  turn  on  the
175       use_nfs_home_dirs boolean. Disabled by default.
176
177       setsebool -P use_nfs_home_dirs 1
178
179
180
181       If  you  want  to  support SAMBA home directories, you must turn on the
182       use_samba_home_dirs boolean. Disabled by default.
183
184       setsebool -P use_samba_home_dirs 1
185
186
187

MANAGED FILES

189       The SELinux process type sandbox_x_t can manage files labeled with  the
190       following file types.  The paths listed are the default paths for these
191       file types.  Note the processes UID still need to have DAC permissions.
192
193       cifs_t
194
195
196       fusefs_t
197
198            /var/run/user/[^/]*/gvfs
199
200       mozilla_plugin_rw_t
201
202            /usr/lib/mozilla/plugins-wrapped(/.*)?
203
204       mozilla_plugin_tmpfs_t
205
206
207       nfs_t
208
209
210       sandbox_file_t
211
212
213       sandbox_x_client_tmpfs_t
214
215
216       security_t
217
218            /selinux
219
220       user_tmp_t
221
222            /dev/shm/mono.*
223            /var/run/user(/.*)?
224            /tmp/.X11-unix(/.*)?
225            /tmp/.ICE-unix(/.*)?
226            /dev/shm/pulse-shm.*
227            /tmp/.X0-lock
228            /tmp/hsperfdata_root
229            /var/tmp/hsperfdata_root
230            /home/[^/]+/tmp
231            /home/[^/]+/.tmp
232            /tmp/gconfd-[^/]+
233
234

COMMANDS

236       semanage fcontext can also be used to manipulate default  file  context
237       mappings.
238
239       semanage  permissive  can  also  be used to manipulate whether or not a
240       process type is permissive.
241
242       semanage module can also be used to enable/disable/install/remove  pol‐
243       icy modules.
244
245       semanage boolean can also be used to manipulate the booleans
246
247
248       system-config-selinux is a GUI tool available to customize SELinux pol‐
249       icy settings.
250
251

AUTHOR

253       This manual page was auto-generated using sepolicy manpage .
254
255