1vmtools_selinux(8) SELinux Policy vmtools vmtools_selinux(8)
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6 vmtools_selinux - Security Enhanced Linux Policy for the vmtools pro‐
7 cesses
8
10 Security-Enhanced Linux secures the vmtools processes via flexible
11 mandatory access control.
12 The vmtools processes execute with the vmtools_t SELinux type. You can
14 check if you have these processes running by executing the ps command
15 with the -Z qualifier.
16 For example:
18 ps -eZ | grep vmtools_t
20
24 The vmtools_t SELinux type can be entered via the vmtools_exec_t file
25 type.
26 The default entrypoint paths for the vmtools_t domain are the follow‐
28 ing:
29 /usr/bin/vmtoolsd, /usr/bin/VGAuthService
31
33 SELinux defines process types (domains) for each process running on the
34 system
35 You can see the context of a process using the -Z option to ps
37 Policy governs the access confined processes have to files. SELinux
39 vmtools policy is very flexible allowing users to setup their vmtools
40 processes in as secure a method as possible.
41 The following process types are defined for vmtools:
43 vmtools_t, vmtools_helper_t, vmtools_unconfined_t
45 Note: semanage permissive -a vmtools_t can be used to make the process
47 type vmtools_t permissive. SELinux does not deny access to permissive
48 process types, but the AVC (SELinux denials) messages are still gener‐
49 ated.
50
53 SELinux policy is customizable based on least access required. vmtools
54 policy is extremely flexible and has several booleans that allow you to
55 manipulate the policy and run vmtools with the tightest access possi‐
56 ble.
57 If you want to allow users to resolve user passwd entries directly from
61 ldap rather then using a sssd server, you must turn on the authlo‐
62 gin_nsswitch_use_ldap boolean. Disabled by default.
63 setsebool -P authlogin_nsswitch_use_ldap 1
65 If you want to allow all daemons to write corefiles to /, you must turn
69 on the daemons_dump_core boolean. Disabled by default.
70 setsebool -P daemons_dump_core 1
72 If you want to enable cluster mode for daemons, you must turn on the
76 daemons_enable_cluster_mode boolean. Enabled by default.
77 setsebool -P daemons_enable_cluster_mode 1
79 If you want to allow all daemons to use tcp wrappers, you must turn on
83 the daemons_use_tcp_wrapper boolean. Disabled by default.
84 setsebool -P daemons_use_tcp_wrapper 1
86 If you want to allow all daemons the ability to read/write terminals,
90 you must turn on the daemons_use_tty boolean. Disabled by default.
91 setsebool -P daemons_use_tty 1
93 If you want to deny user domains applications to map a memory region as
97 both executable and writable, this is dangerous and the executable
98 should be reported in bugzilla, you must turn on the deny_execmem bool‐
99 ean. Enabled by default.
100 setsebool -P deny_execmem 1
102 If you want to deny any process from ptracing or debugging any other
106 processes, you must turn on the deny_ptrace boolean. Enabled by
107 default.
108 setsebool -P deny_ptrace 1
110 If you want to allow any process to mmap any file on system with
114 attribute file_type, you must turn on the domain_can_mmap_files bool‐
115 ean. Enabled by default.
116 setsebool -P domain_can_mmap_files 1
118 If you want to allow all domains write to kmsg_device, while kernel is
122 executed with systemd.log_target=kmsg parameter, you must turn on the
123 domain_can_write_kmsg boolean. Disabled by default.
124 setsebool -P domain_can_write_kmsg 1
126 If you want to allow all domains to use other domains file descriptors,
130 you must turn on the domain_fd_use boolean. Enabled by default.
131 setsebool -P domain_fd_use 1
133 If you want to allow all domains to have the kernel load modules, you
137 must turn on the domain_kernel_load_modules boolean. Disabled by
138 default.
139 setsebool -P domain_kernel_load_modules 1
141 If you want to allow all domains to execute in fips_mode, you must turn
145 on the fips_mode boolean. Enabled by default.
146 setsebool -P fips_mode 1
148 If you want to enable reading of urandom for all domains, you must turn
152 on the global_ssp boolean. Disabled by default.
153 setsebool -P global_ssp 1
155 If you want to allow confined applications to run with kerberos, you
159 must turn on the kerberos_enabled boolean. Enabled by default.
160 setsebool -P kerberos_enabled 1
162 If you want to control the ability to mmap a low area of the address
166 space, as configured by /proc/sys/vm/mmap_min_addr, you must turn on
167 the mmap_low_allowed boolean. Disabled by default.
168 setsebool -P mmap_low_allowed 1
170 If you want to allow system to run with NIS, you must turn on the
174 nis_enabled boolean. Disabled by default.
175 setsebool -P nis_enabled 1
177 If you want to allow confined applications to use nscd shared memory,
181 you must turn on the nscd_use_shm boolean. Disabled by default.
182 setsebool -P nscd_use_shm 1
184 If you want to disable kernel module loading, you must turn on the
188 secure_mode_insmod boolean. Enabled by default.
189 setsebool -P secure_mode_insmod 1
191 If you want to boolean to determine whether the system permits loading
195 policy, setting enforcing mode, and changing boolean values. Set this
196 to true and you have to reboot to set it back, you must turn on the
197 secure_mode_policyload boolean. Enabled by default.
198 setsebool -P secure_mode_policyload 1
200 If you want to allow unconfined executables to make their heap memory
204 executable. Doing this is a really bad idea. Probably indicates a
205 badly coded executable, but could indicate an attack. This executable
206 should be reported in bugzilla, you must turn on the selin‐
207 uxuser_execheap boolean. Disabled by default.
208 setsebool -P selinuxuser_execheap 1
210 If you want to allow all unconfined executables to use libraries
214 requiring text relocation that are not labeled textrel_shlib_t, you
215 must turn on the selinuxuser_execmod boolean. Enabled by default.
216 setsebool -P selinuxuser_execmod 1
218 If you want to allow unconfined executables to make their stack exe‐
222 cutable. This should never, ever be necessary. Probably indicates a
223 badly coded executable, but could indicate an attack. This executable
224 should be reported in bugzilla, you must turn on the selinuxuser_exec‐
225 stack boolean. Enabled by default.
226 setsebool -P selinuxuser_execstack 1
228 If you want to support X userspace object manager, you must turn on the
232 xserver_object_manager boolean. Enabled by default.
233 setsebool -P xserver_object_manager 1
235
239 The SELinux process type vmtools_t can manage files labeled with the
240 following file types. The paths listed are the default paths for these
241 file types. Note the processes UID still need to have DAC permissions.
242 file_type
244 all files on the system
246
249 SELinux requires files to have an extended attribute to define the file
250 type.
251 You can see the context of a file using the -Z option to ls
253 Policy governs the access confined processes have to these files.
255 SELinux vmtools policy is very flexible allowing users to setup their
256 vmtools processes in as secure a method as possible.
257 STANDARD FILE CONTEXT
259 SELinux defines the file context types for the vmtools, if you wanted
261 to store files with these types in a diffent paths, you need to execute
262 the semanage command to sepecify alternate labeling and then use
263 restorecon to put the labels on disk.
264 semanage fcontext -a -t vmtools_unit_file_t '/srv/myvmtools_con‐
266 tent(/.*)?'
267 restorecon -R -v /srv/myvmtools_content
268 Note: SELinux often uses regular expressions to specify labels that
270 match multiple files.
271 The following file types are defined for vmtools:
273 vmtools_exec_t
277 - Set files with the vmtools_exec_t type, if you want to transition an
279 executable to the vmtools_t domain.
280 Paths:
283 /usr/bin/vmtoolsd, /usr/bin/VGAuthService
284 vmtools_helper_exec_t
287 - Set files with the vmtools_helper_exec_t type, if you want to transi‐
289 tion an executable to the vmtools_helper_t domain.
290 vmtools_tmp_t
294 - Set files with the vmtools_tmp_t type, if you want to store vmtools
296 temporary files in the /tmp directories.
297 vmtools_unconfined_exec_t
301 - Set files with the vmtools_unconfined_exec_t type, if you want to
303 transition an executable to the vmtools_unconfined_t domain.
304 vmtools_unit_file_t
308 - Set files with the vmtools_unit_file_t type, if you want to treat the
310 files as vmtools unit content.
311 Note: File context can be temporarily modified with the chcon command.
315 If you want to permanently change the file context you need to use the
316 semanage fcontext command. This will modify the SELinux labeling data‐
317 base. You will need to use restorecon to apply the labels.
318
321 semanage fcontext can also be used to manipulate default file context
322 mappings.
323 semanage permissive can also be used to manipulate whether or not a
325 process type is permissive.
326 semanage module can also be used to enable/disable/install/remove pol‐
328 icy modules.
329 semanage boolean can also be used to manipulate the booleans
331 system-config-selinux is a GUI tool available to customize SELinux pol‐
334 icy settings.
335
338 This manual page was auto-generated using sepolicy manpage .
339
342 selinux(8), vmtools(8), semanage(8), restorecon(8), chcon(1), sepol‐
343 icy(8) , setsebool(8), vmtools_helper_selinux(8),
344 vmtools_helper_selinux(8), vmtools_unconfined_selinux(8),
345 vmtools_unconfined_selinux(8)
346vmtools 19-04-25 vmtools_selinux(8)