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Commit | Line | Data |
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29af4c13 | 1 | policy_module(ssh, 2.2.0) |
0404a390 CP |
2 | |
3 | ######################################## | |
4 | # | |
5 | # Declarations | |
6 | # | |
7 | ||
56e1b3d2 | 8 | ## <desc> |
1e2abee1 DG |
9 | ## <p> |
10 | ## allow host key based authentication | |
11 | ## </p> | |
56e1b3d2 | 12 | ## </desc> |
0bfccda4 | 13 | gen_tunable(allow_ssh_keysign, false) |
56e1b3d2 CP |
14 | |
15 | ## <desc> | |
1e2abee1 DG |
16 | ## <p> |
17 | ## Allow ssh logins as sysadm_r:sysadm_t | |
18 | ## </p> | |
56e1b3d2 | 19 | ## </desc> |
0bfccda4 | 20 | gen_tunable(ssh_sysadm_login, false) |
56e1b3d2 | 21 | |
3eaa9939 | 22 | ## <desc> |
1e2abee1 DG |
23 | ## <p> |
24 | ## allow sshd to forward port connections | |
25 | ## </p> | |
3eaa9939 DW |
26 | ## </desc> |
27 | gen_tunable(sshd_forward_ports, false) | |
28 | ||
45239964 | 29 | attribute ssh_server; |
296273a7 | 30 | attribute ssh_agent_type; |
0404a390 | 31 | |
75beb950 | 32 | type ssh_keygen_t; |
0404a390 | 33 | type ssh_keygen_exec_t; |
0bfccda4 | 34 | init_system_domain(ssh_keygen_t, ssh_keygen_exec_t) |
0404a390 | 35 | |
e070dd2d | 36 | type sshd_exec_t; |
fb63d0b5 | 37 | corecmd_executable_file(sshd_exec_t) |
c3812748 | 38 | |
6b19be33 | 39 | ssh_server_template(sshd) |
0bfccda4 | 40 | init_daemon_domain(sshd_t, sshd_exec_t) |
6b19be33 | 41 | |
3eaa9939 DW |
42 | type sshd_initrc_exec_t; |
43 | init_script_file(sshd_initrc_exec_t) | |
44 | ||
375c2415 CP |
45 | type sshd_key_t; |
46 | files_type(sshd_key_t) | |
9ccd96df | 47 | |
296273a7 CP |
48 | type ssh_t; |
49 | type ssh_exec_t; | |
50 | typealias ssh_t alias { user_ssh_t staff_ssh_t sysadm_ssh_t }; | |
51 | typealias ssh_t alias { auditadm_ssh_t secadm_ssh_t }; | |
52 | application_domain(ssh_t, ssh_exec_t) | |
53 | ubac_constrained(ssh_t) | |
54 | ||
55 | type ssh_agent_exec_t; | |
56 | corecmd_executable_file(ssh_agent_exec_t) | |
57 | ||
58 | type ssh_agent_tmp_t; | |
59 | typealias ssh_agent_tmp_t alias { user_ssh_agent_tmp_t staff_ssh_agent_tmp_t sysadm_ssh_agent_tmp_t }; | |
60 | typealias ssh_agent_tmp_t alias { auditadm_ssh_agent_tmp_t secadm_ssh_agent_tmp_t }; | |
61 | files_tmp_file(ssh_agent_tmp_t) | |
62 | ubac_constrained(ssh_agent_tmp_t) | |
63 | ||
64 | type ssh_keysign_t; | |
65 | type ssh_keysign_exec_t; | |
66 | typealias ssh_keysign_t alias { user_ssh_keysign_t staff_ssh_keysign_t sysadm_ssh_keysign_t }; | |
67 | typealias ssh_keysign_t alias { auditadm_ssh_keysign_t secadm_ssh_keysign_t }; | |
68 | application_domain(ssh_keysign_t, ssh_keysign_exec_t) | |
69 | ubac_constrained(ssh_keysign_t) | |
70 | ||
71 | type ssh_tmpfs_t; | |
72 | typealias ssh_tmpfs_t alias { user_ssh_tmpfs_t staff_ssh_tmpfs_t sysadm_ssh_tmpfs_t }; | |
73 | typealias ssh_tmpfs_t alias { auditadm_ssh_tmpfs_t secadm_ssh_tmpfs_t }; | |
74 | files_tmpfs_file(ssh_tmpfs_t) | |
75 | ubac_constrained(ssh_tmpfs_t) | |
76 | ||
cde15072 CP |
77 | type ssh_home_t; |
78 | typealias ssh_home_t alias { home_ssh_t user_ssh_home_t user_home_ssh_t staff_home_ssh_t sysadm_home_ssh_t }; | |
79 | typealias ssh_home_t alias { auditadm_home_ssh_t secadm_home_ssh_t }; | |
cde15072 | 80 | userdom_user_home_content(ssh_home_t) |
296273a7 | 81 | |
4781493e DG |
82 | ifdef(`enable_mcs',` |
83 | init_ranged_daemon_domain(sshd_t, sshd_exec_t, s0 - mcs_systemhigh) | |
84 | ') | |
85 | ||
296273a7 CP |
86 | ############################## |
87 | # | |
88 | # SSH client local policy | |
89 | # | |
90 | ||
91 | allow ssh_t self:capability { setuid setgid dac_override dac_read_search }; | |
92 | allow ssh_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execstack execheap }; | |
93 | allow ssh_t self:fd use; | |
94 | allow ssh_t self:fifo_file rw_fifo_file_perms; | |
95 | allow ssh_t self:unix_dgram_socket { create_socket_perms sendto }; | |
96 | allow ssh_t self:unix_stream_socket { create_stream_socket_perms connectto }; | |
97 | allow ssh_t self:shm create_shm_perms; | |
98 | allow ssh_t self:sem create_sem_perms; | |
99 | allow ssh_t self:msgq create_msgq_perms; | |
100 | allow ssh_t self:msg { send receive }; | |
cde15072 | 101 | allow ssh_t self:tcp_socket create_stream_socket_perms; |
64607462 | 102 | can_exec(ssh_t, ssh_exec_t) |
296273a7 CP |
103 | |
104 | # Read the ssh key file. | |
105 | allow ssh_t sshd_key_t:file read_file_perms; | |
106 | ||
296273a7 CP |
107 | manage_files_pattern(ssh_t, ssh_tmpfs_t, ssh_tmpfs_t) |
108 | manage_lnk_files_pattern(ssh_t, ssh_tmpfs_t, ssh_tmpfs_t) | |
109 | manage_fifo_files_pattern(ssh_t, ssh_tmpfs_t, ssh_tmpfs_t) | |
110 | manage_sock_files_pattern(ssh_t, ssh_tmpfs_t, ssh_tmpfs_t) | |
cde15072 | 111 | fs_tmpfs_filetrans(ssh_t, ssh_tmpfs_t, { dir file lnk_file sock_file fifo_file }) |
296273a7 | 112 | |
edc2f7de CP |
113 | manage_dirs_pattern(ssh_t, ssh_home_t, ssh_home_t) |
114 | manage_sock_files_pattern(ssh_t, ssh_home_t, ssh_home_t) | |
115 | userdom_user_home_dir_filetrans(ssh_t, ssh_home_t, { dir sock_file }) | |
3eaa9939 | 116 | userdom_stream_connect(ssh_t) |
296273a7 CP |
117 | |
118 | # Allow the ssh program to communicate with ssh-agent. | |
119 | stream_connect_pattern(ssh_t, ssh_agent_tmp_t, ssh_agent_tmp_t, ssh_agent_type) | |
120 | ||
121 | allow ssh_t sshd_t:unix_stream_socket connectto; | |
122 | ||
123 | # ssh client can manage the keys and config | |
edc2f7de CP |
124 | manage_files_pattern(ssh_t, ssh_home_t, ssh_home_t) |
125 | read_lnk_files_pattern(ssh_t, ssh_home_t, ssh_home_t) | |
296273a7 CP |
126 | |
127 | # ssh servers can read the user keys and config | |
3eaa9939 DW |
128 | manage_dirs_pattern(ssh_server, ssh_home_t, ssh_home_t) |
129 | manage_files_pattern(ssh_server, ssh_home_t, ssh_home_t) | |
130 | userdom_user_home_dir_filetrans(ssh_server, ssh_home_t, dir) | |
131 | userdom_admin_home_dir_filetrans(ssh_server, ssh_home_t, dir) | |
296273a7 CP |
132 | |
133 | kernel_read_kernel_sysctls(ssh_t) | |
cde15072 | 134 | kernel_read_system_state(ssh_t) |
296273a7 CP |
135 | |
136 | corenet_all_recvfrom_unlabeled(ssh_t) | |
137 | corenet_all_recvfrom_netlabel(ssh_t) | |
668b3093 | 138 | corenet_tcp_sendrecv_generic_if(ssh_t) |
c1262146 | 139 | corenet_tcp_sendrecv_generic_node(ssh_t) |
296273a7 CP |
140 | corenet_tcp_sendrecv_all_ports(ssh_t) |
141 | corenet_tcp_connect_ssh_port(ssh_t) | |
142 | corenet_sendrecv_ssh_client_packets(ssh_t) | |
3eaa9939 DW |
143 | corenet_tcp_bind_generic_node(ssh_t) |
144 | corenet_tcp_bind_all_unreserved_ports(ssh_t) | |
296273a7 CP |
145 | |
146 | dev_read_urand(ssh_t) | |
147 | ||
148 | fs_getattr_all_fs(ssh_t) | |
149 | fs_search_auto_mountpoints(ssh_t) | |
150 | ||
151 | # run helper programs - needed eg for x11-ssh-askpass | |
152 | corecmd_exec_shell(ssh_t) | |
153 | corecmd_exec_bin(ssh_t) | |
154 | ||
155 | domain_use_interactive_fds(ssh_t) | |
156 | ||
157 | files_list_home(ssh_t) | |
158 | files_read_usr_files(ssh_t) | |
159 | files_read_etc_runtime_files(ssh_t) | |
160 | files_read_etc_files(ssh_t) | |
161 | files_read_var_files(ssh_t) | |
162 | ||
163 | logging_send_syslog_msg(ssh_t) | |
164 | logging_read_generic_logs(ssh_t) | |
165 | ||
cde15072 CP |
166 | auth_use_nsswitch(ssh_t) |
167 | ||
296273a7 CP |
168 | miscfiles_read_localization(ssh_t) |
169 | ||
170 | seutil_read_config(ssh_t) | |
171 | ||
296273a7 CP |
172 | userdom_dontaudit_list_user_home_dirs(ssh_t) |
173 | userdom_search_user_home_dirs(ssh_t) | |
174 | # Write to the user domain tty. | |
175 | userdom_use_user_terminals(ssh_t) | |
3eaa9939 | 176 | # needs to read krb/write tgt |
296273a7 | 177 | userdom_read_user_tmp_files(ssh_t) |
3eaa9939 DW |
178 | userdom_write_user_tmp_files(ssh_t) |
179 | userdom_read_user_home_content_symlinks(ssh_t) | |
296273a7 CP |
180 | |
181 | tunable_policy(`allow_ssh_keysign',` | |
3c4ffa32 | 182 | domtrans_pattern(ssh_t, ssh_keysign_exec_t, ssh_keysign_t) |
296273a7 CP |
183 | ') |
184 | ||
296273a7 CP |
185 | tunable_policy(`use_nfs_home_dirs',` |
186 | fs_manage_nfs_dirs(ssh_t) | |
187 | fs_manage_nfs_files(ssh_t) | |
188 | ') | |
189 | ||
190 | tunable_policy(`use_samba_home_dirs',` | |
191 | fs_manage_cifs_dirs(ssh_t) | |
192 | fs_manage_cifs_files(ssh_t) | |
193 | ') | |
194 | ||
195 | # for port forwarding | |
196 | tunable_policy(`user_tcp_server',` | |
197 | corenet_tcp_bind_ssh_port(ssh_t) | |
cde15072 | 198 | corenet_tcp_bind_generic_node(ssh_t) |
296273a7 CP |
199 | ') |
200 | ||
201 | optional_policy(` | |
202 | xserver_user_x_domain_template(ssh, ssh_t, ssh_tmpfs_t) | |
203 | xserver_domtrans_xauth(ssh_t) | |
204 | ') | |
205 | ||
3eaa9939 DW |
206 | ######################################## |
207 | # | |
208 | # ssh_keygen local policy | |
209 | # | |
210 | ||
211 | # ssh_keygen_t is the type of the ssh-keygen program when run at install time | |
212 | # and by sysadm_t | |
213 | ||
214 | dontaudit ssh_keygen_t self:capability sys_tty_config; | |
215 | allow ssh_keygen_t self:process { sigchld sigkill sigstop signull signal }; | |
3eaa9939 DW |
216 | allow ssh_keygen_t self:unix_stream_socket create_stream_socket_perms; |
217 | ||
218 | allow ssh_keygen_t sshd_key_t:file manage_file_perms; | |
219 | files_etc_filetrans(ssh_keygen_t, sshd_key_t, file) | |
220 | ||
221 | kernel_read_kernel_sysctls(ssh_keygen_t) | |
222 | ||
223 | fs_search_auto_mountpoints(ssh_keygen_t) | |
224 | ||
225 | dev_read_sysfs(ssh_keygen_t) | |
226 | dev_read_urand(ssh_keygen_t) | |
227 | ||
228 | term_dontaudit_use_console(ssh_keygen_t) | |
229 | ||
230 | domain_use_interactive_fds(ssh_keygen_t) | |
231 | ||
232 | files_read_etc_files(ssh_keygen_t) | |
233 | ||
234 | init_use_fds(ssh_keygen_t) | |
235 | init_use_script_ptys(ssh_keygen_t) | |
236 | ||
237 | logging_send_syslog_msg(ssh_keygen_t) | |
238 | ||
239 | userdom_dontaudit_use_unpriv_user_fds(ssh_keygen_t) | |
240 | ||
241 | optional_policy(` | |
242 | nscd_socket_use(ssh_keygen_t) | |
243 | ') | |
244 | ||
245 | optional_policy(` | |
246 | seutil_sigchld_newrole(ssh_keygen_t) | |
247 | ') | |
248 | ||
249 | optional_policy(` | |
250 | udev_read_db(ssh_keygen_t) | |
251 | ') | |
252 | ||
296273a7 CP |
253 | ############################## |
254 | # | |
255 | # ssh_keysign_t local policy | |
256 | # | |
257 | ||
258 | tunable_policy(`allow_ssh_keysign',` | |
259 | allow ssh_keysign_t self:capability { setgid setuid }; | |
260 | allow ssh_keysign_t self:unix_stream_socket create_socket_perms; | |
261 | ||
7d1f5642 | 262 | allow ssh_keysign_t sshd_key_t:file read_file_perms; |
296273a7 CP |
263 | |
264 | dev_read_urand(ssh_keysign_t) | |
265 | ||
266 | files_read_etc_files(ssh_keysign_t) | |
267 | ') | |
268 | ||
269 | optional_policy(` | |
270 | tunable_policy(`allow_ssh_keysign',` | |
271 | nscd_socket_use(ssh_keysign_t) | |
272 | ') | |
273 | ') | |
274 | ||
0404a390 CP |
275 | ################################# |
276 | # | |
277 | # sshd local policy | |
278 | # | |
279 | # sshd_t is the domain for the sshd program. | |
280 | # | |
281 | ||
6b19be33 CP |
282 | # so a tunnel can point to another ssh tunnel |
283 | allow sshd_t self:netlink_route_socket r_netlink_socket_perms; | |
284 | allow sshd_t self:key { search link write }; | |
3eaa9939 | 285 | allow sshd_t self:process setcurrent; |
44d5d93f | 286 | |
6b19be33 CP |
287 | kernel_search_key(sshd_t) |
288 | kernel_link_key(sshd_t) | |
289 | ||
c3c753f7 CP |
290 | term_use_all_ptys(sshd_t) |
291 | term_setattr_all_ptys(sshd_t) | |
3eaa9939 | 292 | term_setattr_all_ttys(sshd_t) |
c3c753f7 | 293 | term_relabelto_all_ptys(sshd_t) |
3eaa9939 | 294 | term_use_ptmx(sshd_t) |
296273a7 | 295 | |
6b19be33 CP |
296 | # for X forwarding |
297 | corenet_tcp_bind_xserver_port(sshd_t) | |
298 | corenet_sendrecv_xserver_server_packets(sshd_t) | |
299 | ||
3eaa9939 DW |
300 | userdom_read_user_home_content_files(sshd_t) |
301 | userdom_read_user_home_content_symlinks(sshd_t) | |
302 | userdom_search_admin_dir(sshd_t) | |
303 | userdom_manage_tmp_role(system_r, sshd_t) | |
4781493e DG |
304 | userdom_spec_domtrans_unpriv_users(sshd_t) |
305 | userdom_signal_unpriv_users(sshd_t) | |
306 | ||
307 | tunable_policy(`sshd_forward_ports',` | |
308 | corenet_tcp_bind_all_unreserved_ports(sshd_t) | |
309 | corenet_tcp_connect_all_ports(sshd_t) | |
310 | ') | |
3eaa9939 | 311 | |
6b19be33 CP |
312 | tunable_policy(`ssh_sysadm_login',` |
313 | # Relabel and access ptys created by sshd | |
314 | # ioctl is necessary for logout() processing for utmp entry and for w to | |
315 | # display the tty. | |
316 | # some versions of sshd on the new SE Linux require setattr | |
6b19be33 | 317 | userdom_signal_all_users(sshd_t) |
6b19be33 CP |
318 | ') |
319 | ||
cde15072 | 320 | optional_policy(` |
088b65e5 | 321 | daemontools_service_domain(sshd_t, sshd_exec_t) |
cde15072 CP |
322 | ') |
323 | ||
3eaa9939 DW |
324 | optional_policy(` |
325 | kerberos_keytab_template(sshd, sshd_t) | |
326 | ') | |
327 | ||
328 | optional_policy(` | |
329 | ftp_dyntrans_sftpd(sshd_t) | |
330 | ftp_dyntrans_anon_sftpd(sshd_t) | |
331 | ') | |
332 | ||
333 | optional_policy(` | |
334 | gitosis_manage_lib_files(sshd_t) | |
335 | ') | |
336 | ||
6b19be33 | 337 | optional_policy(` |
088b65e5 | 338 | inetd_tcp_service_domain(sshd_t, sshd_exec_t) |
6b19be33 CP |
339 | ') |
340 | ||
341 | optional_policy(` | |
3eaa9939 | 342 | nx_read_home_files(sshd_t) |
6b19be33 CP |
343 | ') |
344 | ||
345 | optional_policy(` | |
346 | rpm_use_script_fds(sshd_t) | |
347 | ') | |
348 | ||
349 | optional_policy(` | |
296273a7 | 350 | rssh_spec_domtrans(sshd_t) |
6b19be33 | 351 | # For reading /home/user/.ssh |
296273a7 | 352 | rssh_read_ro_content(sshd_t) |
6b19be33 CP |
353 | ') |
354 | ||
3eaa9939 DW |
355 | optional_policy(` |
356 | usermanage_domtrans_passwd(sshd_t) | |
357 | usermanage_read_crack_db(sshd_t) | |
358 | ') | |
359 | ||
350b6ab7 | 360 | optional_policy(` |
350b6ab7 CP |
361 | unconfined_shell_domtrans(sshd_t) |
362 | ') | |
363 | ||
088b65e5 CP |
364 | optional_policy(` |
365 | xserver_domtrans_xauth(sshd_t) | |
366 | ') | |
367 | ||
6b19be33 | 368 | ifdef(`TODO',` |
1e2abee1 DG |
369 | tunable_policy(`ssh_sysadm_login',` |
370 | # Relabel and access ptys created by sshd | |
371 | # ioctl is necessary for logout() processing for utmp entry and for w to | |
372 | # display the tty. | |
373 | # some versions of sshd on the new SE Linux require setattr | |
374 | allow sshd_t ptyfile:chr_file relabelto; | |
375 | ||
376 | optional_policy(` | |
377 | domain_trans(sshd_t, xauth_exec_t, userdomain) | |
378 | ') | |
379 | ',` | |
380 | optional_policy(` | |
381 | domain_trans(sshd_t, xauth_exec_t, unpriv_userdomain) | |
382 | ') | |
383 | # Relabel and access ptys created by sshd | |
384 | # ioctl is necessary for logout() processing for utmp entry and for w to | |
385 | # display the tty. | |
386 | # some versions of sshd on the new SE Linux require setattr | |
7d1f5642 | 387 | allow sshd_t userpty_type:chr_file { relabelto rw_inherited_chr_file_perms setattr_chr_file_perms }; |
5540e76a | 388 | ') |
6b19be33 | 389 | ') dnl endif TODO |
0404a390 | 390 | |
0404a390 CP |
391 | ######################################## |
392 | # | |
393 | # ssh_keygen local policy | |
394 | # | |
395 | ||
75beb950 CP |
396 | # ssh_keygen_t is the type of the ssh-keygen program when run at install time |
397 | # and by sysadm_t | |
0404a390 | 398 | |
75beb950 CP |
399 | dontaudit ssh_keygen_t self:capability sys_tty_config; |
400 | allow ssh_keygen_t self:process { sigchld sigkill sigstop signull signal }; | |
75beb950 | 401 | allow ssh_keygen_t self:unix_stream_socket create_stream_socket_perms; |
0404a390 | 402 | |
c0868a7a | 403 | allow ssh_keygen_t sshd_key_t:file manage_file_perms; |
0bfccda4 | 404 | files_etc_filetrans(ssh_keygen_t, sshd_key_t, file) |
0404a390 | 405 | |
75beb950 | 406 | kernel_read_kernel_sysctls(ssh_keygen_t) |
0404a390 | 407 | |
75beb950 | 408 | fs_search_auto_mountpoints(ssh_keygen_t) |
ab940a4c | 409 | |
75beb950 CP |
410 | dev_read_sysfs(ssh_keygen_t) |
411 | dev_read_urand(ssh_keygen_t) | |
0404a390 | 412 | |
75beb950 | 413 | term_dontaudit_use_console(ssh_keygen_t) |
0404a390 | 414 | |
75beb950 | 415 | domain_use_interactive_fds(ssh_keygen_t) |
0404a390 | 416 | |
75beb950 | 417 | files_read_etc_files(ssh_keygen_t) |
0404a390 | 418 | |
75beb950 CP |
419 | init_use_fds(ssh_keygen_t) |
420 | init_use_script_ptys(ssh_keygen_t) | |
0404a390 | 421 | |
cde15072 CP |
422 | auth_use_nsswitch(ssh_keygen_t) |
423 | ||
75beb950 | 424 | logging_send_syslog_msg(ssh_keygen_t) |
0404a390 | 425 | |
75beb950 | 426 | userdom_dontaudit_use_unpriv_user_fds(ssh_keygen_t) |
0404a390 | 427 | |
75beb950 CP |
428 | optional_policy(` |
429 | seutil_sigchld_newrole(ssh_keygen_t) | |
430 | ') | |
431 | ||
432 | optional_policy(` | |
433 | udev_read_db(ssh_keygen_t) | |
c0d1566a | 434 | ') |