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ec16f3b6 LP |
1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
2 | ||
ec16f3b6 LP |
3 | #include <sys/utsname.h> |
4 | ||
5 | #include "analyze-security.h" | |
6 | #include "bus-error.h" | |
807542be | 7 | #include "bus-map-properties.h" |
ec16f3b6 LP |
8 | #include "bus-unit-util.h" |
9 | #include "bus-util.h" | |
10 | #include "env-util.h" | |
11 | #include "format-table.h" | |
12 | #include "in-addr-util.h" | |
13 | #include "locale-util.h" | |
14 | #include "macro.h" | |
f5947a5e YW |
15 | #include "missing_capability.h" |
16 | #include "missing_sched.h" | |
d8b4d14d | 17 | #include "nulstr-util.h" |
ec16f3b6 LP |
18 | #include "parse-util.h" |
19 | #include "path-util.h" | |
20 | #include "pretty-print.h" | |
3a5d89fa WKI |
21 | #if HAVE_SECCOMP |
22 | # include "seccomp-util.h" | |
23 | #endif | |
ec16f3b6 LP |
24 | #include "set.h" |
25 | #include "stdio-util.h" | |
26 | #include "strv.h" | |
27 | #include "terminal-util.h" | |
28 | #include "unit-def.h" | |
29 | #include "unit-name.h" | |
30 | ||
31 | struct security_info { | |
32 | char *id; | |
33 | char *type; | |
34 | char *load_state; | |
35 | char *fragment_path; | |
36 | bool default_dependencies; | |
37 | ||
38 | uint64_t ambient_capabilities; | |
39 | uint64_t capability_bounding_set; | |
40 | ||
41 | char *user; | |
42 | char **supplementary_groups; | |
43 | bool dynamic_user; | |
44 | ||
45 | bool ip_address_deny_all; | |
46 | bool ip_address_allow_localhost; | |
47 | bool ip_address_allow_other; | |
48 | ||
fab34748 KL |
49 | bool ip_filters_custom_ingress; |
50 | bool ip_filters_custom_egress; | |
51 | ||
ec16f3b6 | 52 | char *keyring_mode; |
ed125c93 LP |
53 | char *protect_proc; |
54 | char *proc_subset; | |
ec16f3b6 LP |
55 | bool lock_personality; |
56 | bool memory_deny_write_execute; | |
57 | bool no_new_privileges; | |
58 | char *notify_access; | |
527bd7f1 | 59 | bool protect_hostname; |
ec16f3b6 LP |
60 | |
61 | bool private_devices; | |
62 | bool private_mounts; | |
63 | bool private_network; | |
64 | bool private_tmp; | |
65 | bool private_users; | |
66 | ||
67 | bool protect_control_groups; | |
68 | bool protect_kernel_modules; | |
69 | bool protect_kernel_tunables; | |
82dce83b | 70 | bool protect_kernel_logs; |
9f37272a | 71 | bool protect_clock; |
ec16f3b6 LP |
72 | |
73 | char *protect_home; | |
74 | char *protect_system; | |
75 | ||
76 | bool remove_ipc; | |
77 | ||
78 | bool restrict_address_family_inet; | |
79 | bool restrict_address_family_unix; | |
80 | bool restrict_address_family_netlink; | |
81 | bool restrict_address_family_packet; | |
82 | bool restrict_address_family_other; | |
83 | ||
84 | uint64_t restrict_namespaces; | |
85 | bool restrict_realtime; | |
9d880b70 | 86 | bool restrict_suid_sgid; |
ec16f3b6 LP |
87 | |
88 | char *root_directory; | |
89 | char *root_image; | |
90 | ||
91 | bool delegate; | |
92 | char *device_policy; | |
93 | bool device_allow_non_empty; | |
94 | ||
95 | char **system_call_architectures; | |
96 | ||
6b000af4 | 97 | bool system_call_filter_allow_list; |
ec16f3b6 LP |
98 | Set *system_call_filter; |
99 | ||
100 | uint32_t _umask; | |
101 | }; | |
102 | ||
103 | struct security_assessor { | |
104 | const char *id; | |
105 | const char *description_good; | |
106 | const char *description_bad; | |
107 | const char *description_na; | |
108 | const char *url; | |
109 | uint64_t weight; | |
110 | uint64_t range; | |
1ace223c SJ |
111 | int (*assess)( |
112 | const struct security_assessor *a, | |
113 | const struct security_info *info, | |
114 | const void *data, | |
115 | uint64_t *ret_badness, | |
116 | char **ret_description); | |
ec16f3b6 LP |
117 | size_t offset; |
118 | uint64_t parameter; | |
119 | bool default_dependencies_only; | |
120 | }; | |
121 | ||
122 | static void security_info_free(struct security_info *i) { | |
123 | if (!i) | |
124 | return; | |
125 | ||
126 | free(i->id); | |
127 | free(i->type); | |
128 | free(i->load_state); | |
129 | free(i->fragment_path); | |
130 | ||
131 | free(i->user); | |
132 | ||
133 | free(i->protect_home); | |
134 | free(i->protect_system); | |
135 | ||
136 | free(i->root_directory); | |
137 | free(i->root_image); | |
138 | ||
139 | free(i->keyring_mode); | |
ed125c93 LP |
140 | free(i->protect_proc); |
141 | free(i->proc_subset); | |
ec16f3b6 LP |
142 | free(i->notify_access); |
143 | ||
144 | free(i->device_policy); | |
145 | ||
146 | strv_free(i->supplementary_groups); | |
147 | strv_free(i->system_call_architectures); | |
148 | ||
be327321 | 149 | set_free(i->system_call_filter); |
ec16f3b6 LP |
150 | } |
151 | ||
152 | static bool security_info_runs_privileged(const struct security_info *i) { | |
153 | assert(i); | |
154 | ||
155 | if (STRPTR_IN_SET(i->user, "0", "root")) | |
156 | return true; | |
157 | ||
158 | if (i->dynamic_user) | |
159 | return false; | |
160 | ||
161 | return isempty(i->user); | |
162 | } | |
163 | ||
164 | static int assess_bool( | |
165 | const struct security_assessor *a, | |
166 | const struct security_info *info, | |
167 | const void *data, | |
168 | uint64_t *ret_badness, | |
169 | char **ret_description) { | |
170 | ||
171 | const bool *b = data; | |
172 | ||
173 | assert(b); | |
174 | assert(ret_badness); | |
175 | assert(ret_description); | |
176 | ||
177 | *ret_badness = a->parameter ? *b : !*b; | |
178 | *ret_description = NULL; | |
179 | ||
180 | return 0; | |
181 | } | |
182 | ||
183 | static int assess_user( | |
184 | const struct security_assessor *a, | |
185 | const struct security_info *info, | |
186 | const void *data, | |
187 | uint64_t *ret_badness, | |
188 | char **ret_description) { | |
189 | ||
190 | _cleanup_free_ char *d = NULL; | |
191 | uint64_t b; | |
192 | ||
193 | assert(ret_badness); | |
194 | assert(ret_description); | |
195 | ||
196 | if (streq_ptr(info->user, NOBODY_USER_NAME)) { | |
197 | d = strdup("Service runs under as '" NOBODY_USER_NAME "' user, which should not be used for services"); | |
198 | b = 9; | |
199 | } else if (info->dynamic_user && !STR_IN_SET(info->user, "0", "root")) { | |
200 | d = strdup("Service runs under a transient non-root user identity"); | |
201 | b = 0; | |
202 | } else if (info->user && !STR_IN_SET(info->user, "0", "root", "")) { | |
203 | d = strdup("Service runs under a static non-root user identity"); | |
204 | b = 0; | |
205 | } else { | |
206 | *ret_badness = 10; | |
207 | *ret_description = NULL; | |
208 | return 0; | |
209 | } | |
210 | ||
211 | if (!d) | |
212 | return log_oom(); | |
213 | ||
214 | *ret_badness = b; | |
215 | *ret_description = TAKE_PTR(d); | |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
220 | static int assess_protect_home( | |
221 | const struct security_assessor *a, | |
222 | const struct security_info *info, | |
223 | const void *data, | |
224 | uint64_t *ret_badness, | |
225 | char **ret_description) { | |
226 | ||
227 | const char *description; | |
228 | uint64_t badness; | |
229 | char *copy; | |
230 | int r; | |
231 | ||
232 | assert(ret_badness); | |
233 | assert(ret_description); | |
234 | ||
235 | badness = 10; | |
236 | description = "Service has full access to home directories"; | |
237 | ||
238 | r = parse_boolean(info->protect_home); | |
239 | if (r < 0) { | |
240 | if (streq_ptr(info->protect_home, "read-only")) { | |
241 | badness = 5; | |
242 | description = "Service has read-only access to home directories"; | |
243 | } else if (streq_ptr(info->protect_home, "tmpfs")) { | |
244 | badness = 1; | |
245 | description = "Service has access to fake empty home directories"; | |
246 | } | |
247 | } else if (r > 0) { | |
248 | badness = 0; | |
249 | description = "Service has no access to home directories"; | |
250 | } | |
251 | ||
252 | copy = strdup(description); | |
253 | if (!copy) | |
254 | return log_oom(); | |
255 | ||
256 | *ret_badness = badness; | |
257 | *ret_description = copy; | |
258 | ||
259 | return 0; | |
260 | } | |
261 | ||
262 | static int assess_protect_system( | |
263 | const struct security_assessor *a, | |
264 | const struct security_info *info, | |
265 | const void *data, | |
266 | uint64_t *ret_badness, | |
267 | char **ret_description) { | |
268 | ||
269 | const char *description; | |
270 | uint64_t badness; | |
271 | char *copy; | |
272 | int r; | |
273 | ||
274 | assert(ret_badness); | |
275 | assert(ret_description); | |
276 | ||
277 | badness = 10; | |
1e8817b3 | 278 | description = "Service has full access to the OS file hierarchy"; |
ec16f3b6 LP |
279 | |
280 | r = parse_boolean(info->protect_system); | |
281 | if (r < 0) { | |
282 | if (streq_ptr(info->protect_system, "full")) { | |
283 | badness = 3; | |
1e8817b3 | 284 | description = "Service has very limited write access to the OS file hierarchy"; |
ec16f3b6 LP |
285 | } else if (streq_ptr(info->protect_system, "strict")) { |
286 | badness = 0; | |
287 | description = "Service has strict read-only access to the OS file hierarchy"; | |
288 | } | |
289 | } else if (r > 0) { | |
290 | badness = 5; | |
291 | description = "Service has limited write access to the OS file hierarchy"; | |
292 | } | |
293 | ||
294 | copy = strdup(description); | |
295 | if (!copy) | |
296 | return log_oom(); | |
297 | ||
298 | *ret_badness = badness; | |
299 | *ret_description = copy; | |
300 | ||
301 | return 0; | |
302 | } | |
303 | ||
304 | static int assess_root_directory( | |
305 | const struct security_assessor *a, | |
306 | const struct security_info *info, | |
307 | const void *data, | |
308 | uint64_t *ret_badness, | |
309 | char **ret_description) { | |
310 | ||
311 | assert(ret_badness); | |
312 | assert(ret_description); | |
313 | ||
314 | *ret_badness = | |
d909b40f | 315 | empty_or_root(info->root_directory) && |
d737b451 | 316 | empty_or_root(info->root_image); |
ec16f3b6 LP |
317 | *ret_description = NULL; |
318 | ||
319 | return 0; | |
320 | } | |
321 | ||
322 | static int assess_capability_bounding_set( | |
323 | const struct security_assessor *a, | |
324 | const struct security_info *info, | |
325 | const void *data, | |
326 | uint64_t *ret_badness, | |
327 | char **ret_description) { | |
328 | ||
329 | assert(ret_badness); | |
330 | assert(ret_description); | |
331 | ||
332 | *ret_badness = !!(info->capability_bounding_set & a->parameter); | |
333 | *ret_description = NULL; | |
334 | ||
335 | return 0; | |
336 | } | |
337 | ||
338 | static int assess_umask( | |
339 | const struct security_assessor *a, | |
340 | const struct security_info *info, | |
341 | const void *data, | |
342 | uint64_t *ret_badness, | |
343 | char **ret_description) { | |
344 | ||
345 | char *copy = NULL; | |
346 | const char *d; | |
347 | uint64_t b; | |
348 | ||
349 | assert(ret_badness); | |
350 | assert(ret_description); | |
351 | ||
352 | if (!FLAGS_SET(info->_umask, 0002)) { | |
353 | d = "Files created by service are world-writable by default"; | |
354 | b = 10; | |
355 | } else if (!FLAGS_SET(info->_umask, 0004)) { | |
356 | d = "Files created by service are world-readable by default"; | |
357 | b = 5; | |
358 | } else if (!FLAGS_SET(info->_umask, 0020)) { | |
359 | d = "Files created by service are group-writable by default"; | |
360 | b = 2; | |
361 | } else if (!FLAGS_SET(info->_umask, 0040)) { | |
362 | d = "Files created by service are group-readable by default"; | |
363 | b = 1; | |
364 | } else { | |
365 | d = "Files created by service are accessible only by service's own user by default"; | |
366 | b = 0; | |
367 | } | |
368 | ||
369 | copy = strdup(d); | |
370 | if (!copy) | |
371 | return log_oom(); | |
372 | ||
373 | *ret_badness = b; | |
374 | *ret_description = copy; | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
379 | static int assess_keyring_mode( | |
380 | const struct security_assessor *a, | |
381 | const struct security_info *info, | |
382 | const void *data, | |
383 | uint64_t *ret_badness, | |
384 | char **ret_description) { | |
385 | ||
386 | assert(ret_badness); | |
387 | assert(ret_description); | |
388 | ||
389 | *ret_badness = !streq_ptr(info->keyring_mode, "private"); | |
390 | *ret_description = NULL; | |
391 | ||
392 | return 0; | |
393 | } | |
394 | ||
ed125c93 LP |
395 | static int assess_protect_proc( |
396 | const struct security_assessor *a, | |
397 | const struct security_info *info, | |
398 | const void *data, | |
399 | uint64_t *ret_badness, | |
400 | char **ret_description) { | |
401 | ||
402 | assert(ret_badness); | |
403 | assert(ret_description); | |
404 | ||
405 | if (streq_ptr(info->protect_proc, "noaccess")) | |
406 | *ret_badness = 1; | |
407 | else if (STRPTR_IN_SET(info->protect_proc, "invisible", "ptraceable")) | |
408 | *ret_badness = 0; | |
409 | else | |
410 | *ret_badness = 3; | |
411 | ||
412 | *ret_description = NULL; | |
413 | ||
414 | return 0; | |
415 | } | |
416 | ||
417 | static int assess_proc_subset( | |
418 | const struct security_assessor *a, | |
419 | const struct security_info *info, | |
420 | const void *data, | |
421 | uint64_t *ret_badness, | |
422 | char **ret_description) { | |
423 | ||
424 | assert(ret_badness); | |
425 | assert(ret_description); | |
426 | ||
427 | *ret_badness = !streq_ptr(info->proc_subset, "pid"); | |
428 | *ret_description = NULL; | |
429 | ||
430 | return 0; | |
431 | } | |
432 | ||
ec16f3b6 LP |
433 | static int assess_notify_access( |
434 | const struct security_assessor *a, | |
435 | const struct security_info *info, | |
436 | const void *data, | |
437 | uint64_t *ret_badness, | |
438 | char **ret_description) { | |
439 | ||
440 | assert(ret_badness); | |
441 | assert(ret_description); | |
442 | ||
443 | *ret_badness = streq_ptr(info->notify_access, "all"); | |
444 | *ret_description = NULL; | |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
449 | static int assess_remove_ipc( | |
450 | const struct security_assessor *a, | |
451 | const struct security_info *info, | |
452 | const void *data, | |
453 | uint64_t *ret_badness, | |
454 | char **ret_description) { | |
455 | ||
456 | assert(ret_badness); | |
457 | assert(ret_description); | |
458 | ||
459 | if (security_info_runs_privileged(info)) | |
460 | *ret_badness = UINT64_MAX; | |
461 | else | |
462 | *ret_badness = !info->remove_ipc; | |
463 | ||
464 | *ret_description = NULL; | |
465 | return 0; | |
466 | } | |
467 | ||
468 | static int assess_supplementary_groups( | |
469 | const struct security_assessor *a, | |
470 | const struct security_info *info, | |
471 | const void *data, | |
472 | uint64_t *ret_badness, | |
473 | char **ret_description) { | |
474 | ||
475 | assert(ret_badness); | |
476 | assert(ret_description); | |
477 | ||
478 | if (security_info_runs_privileged(info)) | |
479 | *ret_badness = UINT64_MAX; | |
480 | else | |
481 | *ret_badness = !strv_isempty(info->supplementary_groups); | |
482 | ||
483 | *ret_description = NULL; | |
484 | return 0; | |
485 | } | |
486 | ||
487 | static int assess_restrict_namespaces( | |
488 | const struct security_assessor *a, | |
489 | const struct security_info *info, | |
490 | const void *data, | |
491 | uint64_t *ret_badness, | |
492 | char **ret_description) { | |
493 | ||
494 | assert(ret_badness); | |
495 | assert(ret_description); | |
496 | ||
497 | *ret_badness = !!(info->restrict_namespaces & a->parameter); | |
498 | *ret_description = NULL; | |
499 | ||
500 | return 0; | |
501 | } | |
502 | ||
503 | static int assess_system_call_architectures( | |
504 | const struct security_assessor *a, | |
505 | const struct security_info *info, | |
506 | const void *data, | |
507 | uint64_t *ret_badness, | |
508 | char **ret_description) { | |
509 | ||
510 | char *d; | |
511 | uint64_t b; | |
512 | ||
513 | assert(ret_badness); | |
514 | assert(ret_description); | |
515 | ||
516 | if (strv_isempty(info->system_call_architectures)) { | |
517 | b = 10; | |
518 | d = strdup("Service may execute system calls with all ABIs"); | |
519 | } else if (strv_equal(info->system_call_architectures, STRV_MAKE("native"))) { | |
520 | b = 0; | |
521 | d = strdup("Service may execute system calls only with native ABI"); | |
522 | } else { | |
523 | b = 8; | |
524 | d = strdup("Service may execute system calls with multiple ABIs"); | |
525 | } | |
526 | ||
527 | if (!d) | |
528 | return log_oom(); | |
529 | ||
530 | *ret_badness = b; | |
531 | *ret_description = d; | |
532 | ||
533 | return 0; | |
534 | } | |
535 | ||
3a5d89fa WKI |
536 | #if HAVE_SECCOMP |
537 | ||
a9134af2 | 538 | static bool syscall_names_in_filter(Set *s, bool allow_list, const SyscallFilterSet *f, const char **ret_offending_syscall) { |
ec16f3b6 LP |
539 | const char *syscall; |
540 | ||
541 | NULSTR_FOREACH(syscall, f->value) { | |
95832a0f | 542 | int id; |
ec16f3b6 LP |
543 | |
544 | if (syscall[0] == '@') { | |
545 | const SyscallFilterSet *g; | |
ec16f3b6 | 546 | |
95832a0f | 547 | assert_se(g = syscall_filter_set_find(syscall)); |
a9134af2 | 548 | if (syscall_names_in_filter(s, allow_list, g, ret_offending_syscall)) |
95832a0f | 549 | return true; /* bad! */ |
ec16f3b6 | 550 | |
95832a0f | 551 | continue; |
ec16f3b6 LP |
552 | } |
553 | ||
95832a0f YW |
554 | /* Let's see if the system call actually exists on this platform, before complaining */ |
555 | id = seccomp_syscall_resolve_name(syscall); | |
556 | if (id < 0) | |
557 | continue; | |
558 | ||
6b000af4 | 559 | if (set_contains(s, syscall) == allow_list) { |
ec16f3b6 | 560 | log_debug("Offending syscall filter item: %s", syscall); |
a9134af2 ZJS |
561 | if (ret_offending_syscall) |
562 | *ret_offending_syscall = syscall; | |
ec16f3b6 LP |
563 | return true; /* bad! */ |
564 | } | |
565 | } | |
566 | ||
a9134af2 | 567 | *ret_offending_syscall = NULL; |
ec16f3b6 LP |
568 | return false; |
569 | } | |
570 | ||
571 | static int assess_system_call_filter( | |
572 | const struct security_assessor *a, | |
573 | const struct security_info *info, | |
574 | const void *data, | |
575 | uint64_t *ret_badness, | |
576 | char **ret_description) { | |
577 | ||
ec16f3b6 LP |
578 | assert(a); |
579 | assert(info); | |
580 | assert(ret_badness); | |
581 | assert(ret_description); | |
582 | ||
583 | assert(a->parameter < _SYSCALL_FILTER_SET_MAX); | |
a9134af2 ZJS |
584 | const SyscallFilterSet *f = syscall_filter_sets + a->parameter; |
585 | ||
586 | char *d = NULL; | |
587 | uint64_t b; | |
ec16f3b6 | 588 | |
6b000af4 | 589 | if (!info->system_call_filter_allow_list && set_isempty(info->system_call_filter)) { |
ec16f3b6 LP |
590 | d = strdup("Service does not filter system calls"); |
591 | b = 10; | |
592 | } else { | |
593 | bool bad; | |
a9134af2 | 594 | const char *offender = NULL; |
ec16f3b6 LP |
595 | |
596 | log_debug("Analyzing system call filter, checking against: %s", f->name); | |
a9134af2 | 597 | bad = syscall_names_in_filter(info->system_call_filter, info->system_call_filter_allow_list, f, &offender); |
ec16f3b6 LP |
598 | log_debug("Result: %s", bad ? "bad" : "good"); |
599 | ||
6b000af4 | 600 | if (info->system_call_filter_allow_list) { |
ec16f3b6 | 601 | if (bad) { |
a9134af2 ZJS |
602 | (void) asprintf(&d, "System call allow list defined for service, and %s is included " |
603 | "(e.g. %s is allowed)", | |
604 | f->name, offender); | |
ec16f3b6 LP |
605 | b = 9; |
606 | } else { | |
a9134af2 ZJS |
607 | (void) asprintf(&d, "System call allow list defined for service, and %s is not included", |
608 | f->name); | |
ec16f3b6 LP |
609 | b = 0; |
610 | } | |
611 | } else { | |
612 | if (bad) { | |
a9134af2 ZJS |
613 | (void) asprintf(&d, "System call deny list defined for service, and %s is not included " |
614 | "(e.g. %s is allowed)", | |
615 | f->name, offender); | |
ec16f3b6 LP |
616 | b = 10; |
617 | } else { | |
a9134af2 ZJS |
618 | (void) asprintf(&d, "System call deny list defined for service, and %s is included", |
619 | f->name); | |
01ecb367 | 620 | b = 0; |
ec16f3b6 LP |
621 | } |
622 | } | |
623 | } | |
624 | ||
625 | if (!d) | |
626 | return log_oom(); | |
627 | ||
628 | *ret_badness = b; | |
629 | *ret_description = d; | |
630 | ||
631 | return 0; | |
632 | } | |
633 | ||
3a5d89fa WKI |
634 | #endif |
635 | ||
ec16f3b6 LP |
636 | static int assess_ip_address_allow( |
637 | const struct security_assessor *a, | |
638 | const struct security_info *info, | |
639 | const void *data, | |
640 | uint64_t *ret_badness, | |
641 | char **ret_description) { | |
642 | ||
643 | char *d = NULL; | |
644 | uint64_t b; | |
645 | ||
646 | assert(info); | |
647 | assert(ret_badness); | |
648 | assert(ret_description); | |
649 | ||
fab34748 KL |
650 | if (info->ip_filters_custom_ingress || info->ip_filters_custom_egress) { |
651 | d = strdup("Service defines custom ingress/egress IP filters with BPF programs"); | |
652 | b = 0; | |
653 | } else if (!info->ip_address_deny_all) { | |
6b000af4 | 654 | d = strdup("Service does not define an IP address allow list"); |
ec16f3b6 LP |
655 | b = 10; |
656 | } else if (info->ip_address_allow_other) { | |
6b000af4 | 657 | d = strdup("Service defines IP address allow list with non-localhost entries"); |
ec16f3b6 LP |
658 | b = 5; |
659 | } else if (info->ip_address_allow_localhost) { | |
6b000af4 | 660 | d = strdup("Service defines IP address allow list with only localhost entries"); |
ec16f3b6 LP |
661 | b = 2; |
662 | } else { | |
663 | d = strdup("Service blocks all IP address ranges"); | |
664 | b = 0; | |
665 | } | |
666 | ||
667 | if (!d) | |
668 | return log_oom(); | |
669 | ||
670 | *ret_badness = b; | |
671 | *ret_description = d; | |
672 | ||
673 | return 0; | |
674 | } | |
675 | ||
676 | static int assess_device_allow( | |
677 | const struct security_assessor *a, | |
678 | const struct security_info *info, | |
679 | const void *data, | |
680 | uint64_t *ret_badness, | |
681 | char **ret_description) { | |
682 | ||
683 | char *d = NULL; | |
684 | uint64_t b; | |
685 | ||
686 | assert(info); | |
687 | assert(ret_badness); | |
688 | assert(ret_description); | |
689 | ||
690 | if (STRPTR_IN_SET(info->device_policy, "strict", "closed")) { | |
691 | ||
692 | if (info->device_allow_non_empty) { | |
693 | d = strdup("Service has a device ACL with some special devices"); | |
694 | b = 5; | |
695 | } else { | |
696 | d = strdup("Service has a minimal device ACL"); | |
697 | b = 0; | |
698 | } | |
699 | } else { | |
700 | d = strdup("Service has no device ACL"); | |
701 | b = 10; | |
702 | } | |
703 | ||
704 | if (!d) | |
705 | return log_oom(); | |
706 | ||
707 | *ret_badness = b; | |
708 | *ret_description = d; | |
709 | ||
710 | return 0; | |
711 | } | |
712 | ||
713 | static int assess_ambient_capabilities( | |
714 | const struct security_assessor *a, | |
715 | const struct security_info *info, | |
716 | const void *data, | |
717 | uint64_t *ret_badness, | |
718 | char **ret_description) { | |
719 | ||
720 | assert(ret_badness); | |
721 | assert(ret_description); | |
722 | ||
723 | *ret_badness = info->ambient_capabilities != 0; | |
724 | *ret_description = NULL; | |
725 | ||
726 | return 0; | |
727 | } | |
728 | ||
729 | static const struct security_assessor security_assessor_table[] = { | |
730 | { | |
731 | .id = "User=/DynamicUser=", | |
732 | .description_bad = "Service runs as root user", | |
733 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#User=", | |
734 | .weight = 2000, | |
735 | .range = 10, | |
736 | .assess = assess_user, | |
737 | }, | |
738 | { | |
739 | .id = "SupplementaryGroups=", | |
740 | .description_good = "Service has no supplementary groups", | |
741 | .description_bad = "Service runs with supplementary groups", | |
742 | .description_na = "Service runs as root, option does not matter", | |
743 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SupplementaryGroups=", | |
744 | .weight = 200, | |
745 | .range = 1, | |
746 | .assess = assess_supplementary_groups, | |
747 | }, | |
748 | { | |
749 | .id = "PrivateDevices=", | |
750 | .description_good = "Service has no access to hardware devices", | |
751 | .description_bad = "Service potentially has access to hardware devices", | |
752 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateDevices=", | |
753 | .weight = 1000, | |
754 | .range = 1, | |
755 | .assess = assess_bool, | |
756 | .offset = offsetof(struct security_info, private_devices), | |
757 | }, | |
758 | { | |
759 | .id = "PrivateMounts=", | |
760 | .description_good = "Service cannot install system mounts", | |
761 | .description_bad = "Service may install system mounts", | |
762 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateMounts=", | |
763 | .weight = 1000, | |
764 | .range = 1, | |
765 | .assess = assess_bool, | |
766 | .offset = offsetof(struct security_info, private_mounts), | |
767 | }, | |
768 | { | |
769 | .id = "PrivateNetwork=", | |
770 | .description_good = "Service has no access to the host's network", | |
771 | .description_bad = "Service has access to the host's network", | |
772 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateNetwork=", | |
773 | .weight = 2500, | |
774 | .range = 1, | |
775 | .assess = assess_bool, | |
776 | .offset = offsetof(struct security_info, private_network), | |
777 | }, | |
778 | { | |
779 | .id = "PrivateTmp=", | |
780 | .description_good = "Service has no access to other software's temporary files", | |
781 | .description_bad = "Service has access to other software's temporary files", | |
782 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateTmp=", | |
783 | .weight = 1000, | |
784 | .range = 1, | |
785 | .assess = assess_bool, | |
786 | .offset = offsetof(struct security_info, private_tmp), | |
787 | .default_dependencies_only = true, | |
788 | }, | |
789 | { | |
790 | .id = "PrivateUsers=", | |
791 | .description_good = "Service does not have access to other users", | |
792 | .description_bad = "Service has access to other users", | |
793 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateUsers=", | |
794 | .weight = 1000, | |
795 | .range = 1, | |
796 | .assess = assess_bool, | |
797 | .offset = offsetof(struct security_info, private_users), | |
798 | }, | |
799 | { | |
800 | .id = "ProtectControlGroups=", | |
801 | .description_good = "Service cannot modify the control group file system", | |
287cf2d8 | 802 | .description_bad = "Service may modify the control group file system", |
ec16f3b6 LP |
803 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectControlGroups=", |
804 | .weight = 1000, | |
805 | .range = 1, | |
806 | .assess = assess_bool, | |
807 | .offset = offsetof(struct security_info, protect_control_groups), | |
808 | }, | |
809 | { | |
810 | .id = "ProtectKernelModules=", | |
811 | .description_good = "Service cannot load or read kernel modules", | |
812 | .description_bad = "Service may load or read kernel modules", | |
813 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectKernelModules=", | |
814 | .weight = 1000, | |
815 | .range = 1, | |
816 | .assess = assess_bool, | |
817 | .offset = offsetof(struct security_info, protect_kernel_modules), | |
818 | }, | |
819 | { | |
820 | .id = "ProtectKernelTunables=", | |
821 | .description_good = "Service cannot alter kernel tunables (/proc/sys, …)", | |
822 | .description_bad = "Service may alter kernel tunables", | |
823 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectKernelTunables=", | |
824 | .weight = 1000, | |
825 | .range = 1, | |
826 | .assess = assess_bool, | |
827 | .offset = offsetof(struct security_info, protect_kernel_tunables), | |
828 | }, | |
82dce83b KK |
829 | { |
830 | .id = "ProtectKernelLogs=", | |
831 | .description_good = "Service cannot read from or write to the kernel log ring buffer", | |
832 | .description_bad = "Service may read from or write to the kernel log ring buffer", | |
833 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectKernelLogs=", | |
834 | .weight = 1000, | |
835 | .range = 1, | |
836 | .assess = assess_bool, | |
837 | .offset = offsetof(struct security_info, protect_kernel_logs), | |
838 | }, | |
9f37272a KK |
839 | { |
840 | .id = "ProtectClock=", | |
841 | .description_good = "Service cannot write to the hardware clock or system clock", | |
842 | .description_bad = "Service may write to the hardware clock or system clock", | |
843 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectClock=", | |
844 | .weight = 1000, | |
845 | .range = 1, | |
846 | .assess = assess_bool, | |
847 | .offset = offsetof(struct security_info, protect_clock), | |
848 | }, | |
ec16f3b6 LP |
849 | { |
850 | .id = "ProtectHome=", | |
851 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectHome=", | |
852 | .weight = 1000, | |
853 | .range = 10, | |
854 | .assess = assess_protect_home, | |
855 | .default_dependencies_only = true, | |
856 | }, | |
527bd7f1 TM |
857 | { |
858 | .id = "ProtectHostname=", | |
859 | .description_good = "Service cannot change system host/domainname", | |
860 | .description_bad = "Service may change system host/domainname", | |
861 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectHostname=", | |
862 | .weight = 50, | |
863 | .range = 1, | |
864 | .assess = assess_bool, | |
865 | .offset = offsetof(struct security_info, protect_hostname), | |
866 | }, | |
ec16f3b6 LP |
867 | { |
868 | .id = "ProtectSystem=", | |
869 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectSystem=", | |
870 | .weight = 1000, | |
871 | .range = 10, | |
872 | .assess = assess_protect_system, | |
873 | .default_dependencies_only = true, | |
874 | }, | |
875 | { | |
876 | .id = "RootDirectory=/RootImage=", | |
877 | .description_good = "Service has its own root directory/image", | |
878 | .description_bad = "Service runs within the host's root directory", | |
879 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RootDirectory=", | |
880 | .weight = 200, | |
881 | .range = 1, | |
882 | .assess = assess_root_directory, | |
883 | .default_dependencies_only = true, | |
884 | }, | |
885 | { | |
886 | .id = "LockPersonality=", | |
887 | .description_good = "Service cannot change ABI personality", | |
888 | .description_bad = "Service may change ABI personality", | |
889 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#LockPersonality=", | |
890 | .weight = 100, | |
891 | .range = 1, | |
892 | .assess = assess_bool, | |
893 | .offset = offsetof(struct security_info, lock_personality), | |
894 | }, | |
895 | { | |
896 | .id = "MemoryDenyWriteExecute=", | |
897 | .description_good = "Service cannot create writable executable memory mappings", | |
898 | .description_bad = "Service may create writable executable memory mappings", | |
899 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#MemoryDenyWriteExecute=", | |
900 | .weight = 100, | |
901 | .range = 1, | |
902 | .assess = assess_bool, | |
903 | .offset = offsetof(struct security_info, memory_deny_write_execute), | |
904 | }, | |
905 | { | |
906 | .id = "NoNewPrivileges=", | |
907 | .description_good = "Service processes cannot acquire new privileges", | |
908 | .description_bad = "Service processes may acquire new privileges", | |
909 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#NoNewPrivileges=", | |
910 | .weight = 1000, | |
911 | .range = 1, | |
912 | .assess = assess_bool, | |
913 | .offset = offsetof(struct security_info, no_new_privileges), | |
914 | }, | |
915 | { | |
916 | .id = "CapabilityBoundingSet=~CAP_SYS_ADMIN", | |
917 | .description_good = "Service has no administrator privileges", | |
918 | .description_bad = "Service has administrator privileges", | |
919 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
920 | .weight = 1500, | |
921 | .range = 1, | |
922 | .assess = assess_capability_bounding_set, | |
923 | .parameter = UINT64_C(1) << CAP_SYS_ADMIN, | |
924 | }, | |
925 | { | |
926 | .id = "CapabilityBoundingSet=~CAP_SET(UID|GID|PCAP)", | |
927 | .description_good = "Service cannot change UID/GID identities/capabilities", | |
928 | .description_bad = "Service may change UID/GID identities/capabilities", | |
929 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
930 | .weight = 1500, | |
931 | .range = 1, | |
932 | .assess = assess_capability_bounding_set, | |
933 | .parameter = (UINT64_C(1) << CAP_SETUID)| | |
934 | (UINT64_C(1) << CAP_SETGID)| | |
935 | (UINT64_C(1) << CAP_SETPCAP), | |
936 | }, | |
937 | { | |
938 | .id = "CapabilityBoundingSet=~CAP_SYS_PTRACE", | |
939 | .description_good = "Service has no ptrace() debugging abilities", | |
940 | .description_bad = "Service has ptrace() debugging abilities", | |
941 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
942 | .weight = 1500, | |
943 | .range = 1, | |
944 | .assess = assess_capability_bounding_set, | |
945 | .parameter = (UINT64_C(1) << CAP_SYS_PTRACE), | |
946 | }, | |
947 | { | |
948 | .id = "CapabilityBoundingSet=~CAP_SYS_TIME", | |
949 | .description_good = "Service processes cannot change the system clock", | |
950 | .description_bad = "Service processes may change the system clock", | |
951 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
952 | .weight = 1000, | |
953 | .range = 1, | |
954 | .assess = assess_capability_bounding_set, | |
955 | .parameter = UINT64_C(1) << CAP_SYS_TIME, | |
956 | }, | |
957 | { | |
958 | .id = "CapabilityBoundingSet=~CAP_NET_ADMIN", | |
959 | .description_good = "Service has no network configuration privileges", | |
960 | .description_bad = "Service has network configuration privileges", | |
961 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
962 | .weight = 1000, | |
963 | .range = 1, | |
964 | .assess = assess_capability_bounding_set, | |
965 | .parameter = (UINT64_C(1) << CAP_NET_ADMIN), | |
966 | }, | |
967 | { | |
b5ef6610 | 968 | .id = "CapabilityBoundingSet=~CAP_SYS_RAWIO", |
ec16f3b6 LP |
969 | .description_good = "Service has no raw I/O access", |
970 | .description_bad = "Service has raw I/O access", | |
971 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
972 | .weight = 1000, | |
973 | .range = 1, | |
974 | .assess = assess_capability_bounding_set, | |
975 | .parameter = (UINT64_C(1) << CAP_SYS_RAWIO), | |
976 | }, | |
977 | { | |
978 | .id = "CapabilityBoundingSet=~CAP_SYS_MODULE", | |
979 | .description_good = "Service cannot load kernel modules", | |
980 | .description_bad = "Service may load kernel modules", | |
981 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
982 | .weight = 1000, | |
983 | .range = 1, | |
984 | .assess = assess_capability_bounding_set, | |
985 | .parameter = (UINT64_C(1) << CAP_SYS_MODULE), | |
986 | }, | |
987 | { | |
988 | .id = "CapabilityBoundingSet=~CAP_AUDIT_*", | |
989 | .description_good = "Service has no audit subsystem access", | |
990 | .description_bad = "Service has audit subsystem access", | |
991 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
992 | .weight = 500, | |
993 | .range = 1, | |
994 | .assess = assess_capability_bounding_set, | |
995 | .parameter = (UINT64_C(1) << CAP_AUDIT_CONTROL) | | |
996 | (UINT64_C(1) << CAP_AUDIT_READ) | | |
997 | (UINT64_C(1) << CAP_AUDIT_WRITE), | |
998 | }, | |
999 | { | |
1000 | .id = "CapabilityBoundingSet=~CAP_SYSLOG", | |
1001 | .description_good = "Service has no access to kernel logging", | |
1002 | .description_bad = "Service has access to kernel logging", | |
1003 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1004 | .weight = 500, | |
1005 | .range = 1, | |
1006 | .assess = assess_capability_bounding_set, | |
1007 | .parameter = (UINT64_C(1) << CAP_SYSLOG), | |
1008 | }, | |
1009 | { | |
1010 | .id = "CapabilityBoundingSet=~CAP_SYS_(NICE|RESOURCE)", | |
1011 | .description_good = "Service has no privileges to change resource use parameters", | |
1012 | .description_bad = "Service has privileges to change resource use parameters", | |
1013 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1014 | .weight = 500, | |
1015 | .range = 1, | |
1016 | .assess = assess_capability_bounding_set, | |
1017 | .parameter = (UINT64_C(1) << CAP_SYS_NICE) | | |
1018 | (UINT64_C(1) << CAP_SYS_RESOURCE), | |
1019 | }, | |
1020 | { | |
1021 | .id = "CapabilityBoundingSet=~CAP_MKNOD", | |
1022 | .description_good = "Service cannot create device nodes", | |
1023 | .description_bad = "Service may create device nodes", | |
1024 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1025 | .weight = 500, | |
1026 | .range = 1, | |
1027 | .assess = assess_capability_bounding_set, | |
1028 | .parameter = (UINT64_C(1) << CAP_MKNOD), | |
1029 | }, | |
1030 | { | |
1031 | .id = "CapabilityBoundingSet=~CAP_(CHOWN|FSETID|SETFCAP)", | |
1032 | .description_good = "Service cannot change file ownership/access mode/capabilities", | |
1033 | .description_bad = "Service may change file ownership/access mode/capabilities unrestricted", | |
1034 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1035 | .weight = 1000, | |
1036 | .range = 1, | |
1037 | .assess = assess_capability_bounding_set, | |
1038 | .parameter = (UINT64_C(1) << CAP_CHOWN) | | |
1039 | (UINT64_C(1) << CAP_FSETID) | | |
1040 | (UINT64_C(1) << CAP_SETFCAP), | |
1041 | }, | |
1042 | { | |
1043 | .id = "CapabilityBoundingSet=~CAP_(DAC_*|FOWNER|IPC_OWNER)", | |
1044 | .description_good = "Service cannot override UNIX file/IPC permission checks", | |
1045 | .description_bad = "Service may override UNIX file/IPC permission checks", | |
1046 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1047 | .weight = 1000, | |
1048 | .range = 1, | |
1049 | .assess = assess_capability_bounding_set, | |
1050 | .parameter = (UINT64_C(1) << CAP_DAC_OVERRIDE) | | |
1051 | (UINT64_C(1) << CAP_DAC_READ_SEARCH) | | |
1052 | (UINT64_C(1) << CAP_FOWNER) | | |
1053 | (UINT64_C(1) << CAP_IPC_OWNER), | |
1054 | }, | |
1055 | { | |
1056 | .id = "CapabilityBoundingSet=~CAP_KILL", | |
1057 | .description_good = "Service cannot send UNIX signals to arbitrary processes", | |
1058 | .description_bad = "Service may send UNIX signals to arbitrary processes", | |
1059 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1060 | .weight = 500, | |
1061 | .range = 1, | |
1062 | .assess = assess_capability_bounding_set, | |
1063 | .parameter = (UINT64_C(1) << CAP_KILL), | |
1064 | }, | |
1065 | { | |
1066 | .id = "CapabilityBoundingSet=~CAP_NET_(BIND_SERVICE|BROADCAST|RAW)", | |
1067 | .description_good = "Service has no elevated networking privileges", | |
1068 | .description_bad = "Service has elevated networking privileges", | |
1069 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1070 | .weight = 500, | |
1071 | .range = 1, | |
1072 | .assess = assess_capability_bounding_set, | |
1073 | .parameter = (UINT64_C(1) << CAP_NET_BIND_SERVICE) | | |
1074 | (UINT64_C(1) << CAP_NET_BROADCAST) | | |
1075 | (UINT64_C(1) << CAP_NET_RAW), | |
1076 | }, | |
1077 | { | |
1078 | .id = "CapabilityBoundingSet=~CAP_SYS_BOOT", | |
1079 | .description_good = "Service cannot issue reboot()", | |
1080 | .description_bad = "Service may issue reboot()", | |
1081 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1082 | .weight = 100, | |
1083 | .range = 1, | |
1084 | .assess = assess_capability_bounding_set, | |
1085 | .parameter = (UINT64_C(1) << CAP_SYS_BOOT), | |
1086 | }, | |
1087 | { | |
1088 | .id = "CapabilityBoundingSet=~CAP_MAC_*", | |
1089 | .description_good = "Service cannot adjust SMACK MAC", | |
1090 | .description_bad = "Service may adjust SMACK MAC", | |
1091 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1092 | .weight = 100, | |
1093 | .range = 1, | |
1094 | .assess = assess_capability_bounding_set, | |
1095 | .parameter = (UINT64_C(1) << CAP_MAC_ADMIN)| | |
1096 | (UINT64_C(1) << CAP_MAC_OVERRIDE), | |
1097 | }, | |
1098 | { | |
1099 | .id = "CapabilityBoundingSet=~CAP_LINUX_IMMUTABLE", | |
1100 | .description_good = "Service cannot mark files immutable", | |
1101 | .description_bad = "Service may mark files immutable", | |
1102 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1103 | .weight = 75, | |
1104 | .range = 1, | |
1105 | .assess = assess_capability_bounding_set, | |
1106 | .parameter = (UINT64_C(1) << CAP_LINUX_IMMUTABLE), | |
1107 | }, | |
1108 | { | |
1109 | .id = "CapabilityBoundingSet=~CAP_IPC_LOCK", | |
1110 | .description_good = "Service cannot lock memory into RAM", | |
1111 | .description_bad = "Service may lock memory into RAM", | |
1112 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1113 | .weight = 50, | |
1114 | .range = 1, | |
1115 | .assess = assess_capability_bounding_set, | |
1116 | .parameter = (UINT64_C(1) << CAP_IPC_LOCK), | |
1117 | }, | |
1118 | { | |
1119 | .id = "CapabilityBoundingSet=~CAP_SYS_CHROOT", | |
1120 | .description_good = "Service cannot issue chroot()", | |
1121 | .description_bad = "Service may issue chroot()", | |
1122 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1123 | .weight = 50, | |
1124 | .range = 1, | |
1125 | .assess = assess_capability_bounding_set, | |
1126 | .parameter = (UINT64_C(1) << CAP_SYS_CHROOT), | |
1127 | }, | |
1128 | { | |
1129 | .id = "CapabilityBoundingSet=~CAP_BLOCK_SUSPEND", | |
1130 | .description_good = "Service cannot establish wake locks", | |
1131 | .description_bad = "Service may establish wake locks", | |
1132 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1133 | .weight = 25, | |
1134 | .range = 1, | |
1135 | .assess = assess_capability_bounding_set, | |
1136 | .parameter = (UINT64_C(1) << CAP_BLOCK_SUSPEND), | |
1137 | }, | |
1138 | { | |
1139 | .id = "CapabilityBoundingSet=~CAP_WAKE_ALARM", | |
1140 | .description_good = "Service cannot program timers that wake up the system", | |
1141 | .description_bad = "Service may program timers that wake up the system", | |
1142 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1143 | .weight = 25, | |
1144 | .range = 1, | |
1145 | .assess = assess_capability_bounding_set, | |
1146 | .parameter = (UINT64_C(1) << CAP_WAKE_ALARM), | |
1147 | }, | |
1148 | { | |
1149 | .id = "CapabilityBoundingSet=~CAP_LEASE", | |
1150 | .description_good = "Service cannot create file leases", | |
1151 | .description_bad = "Service may create file leases", | |
1152 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1153 | .weight = 25, | |
1154 | .range = 1, | |
1155 | .assess = assess_capability_bounding_set, | |
1156 | .parameter = (UINT64_C(1) << CAP_LEASE), | |
1157 | }, | |
1158 | { | |
1159 | .id = "CapabilityBoundingSet=~CAP_SYS_TTY_CONFIG", | |
1160 | .description_good = "Service cannot issue vhangup()", | |
1161 | .description_bad = "Service may issue vhangup()", | |
1162 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1163 | .weight = 25, | |
1164 | .range = 1, | |
1165 | .assess = assess_capability_bounding_set, | |
1166 | .parameter = (UINT64_C(1) << CAP_SYS_TTY_CONFIG), | |
1167 | }, | |
1168 | { | |
1169 | .id = "CapabilityBoundingSet=~CAP_SYS_PACCT", | |
1170 | .description_good = "Service cannot use acct()", | |
1171 | .description_bad = "Service may use acct()", | |
1172 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1173 | .weight = 25, | |
1174 | .range = 1, | |
1175 | .assess = assess_capability_bounding_set, | |
1176 | .parameter = (UINT64_C(1) << CAP_SYS_PACCT), | |
1177 | }, | |
1178 | { | |
1179 | .id = "UMask=", | |
1180 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#UMask=", | |
1181 | .weight = 100, | |
1182 | .range = 10, | |
1183 | .assess = assess_umask, | |
1184 | }, | |
1185 | { | |
1186 | .id = "KeyringMode=", | |
1187 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#KeyringMode=", | |
1188 | .description_good = "Service doesn't share key material with other services", | |
1189 | .description_bad = "Service shares key material with other service", | |
1190 | .weight = 1000, | |
1191 | .range = 1, | |
1192 | .assess = assess_keyring_mode, | |
1193 | }, | |
ed125c93 LP |
1194 | { |
1195 | .id = "ProtectProc=", | |
1196 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectProc=", | |
1197 | .description_good = "Service has restricted access to process tree (/proc hidepid=)", | |
1198 | .description_bad = "Service has full access to process tree (/proc hidepid=)", | |
1199 | .weight = 1000, | |
1200 | .range = 3, | |
1201 | .assess = assess_protect_proc, | |
1202 | }, | |
1203 | { | |
1204 | .id = "ProcSubset=", | |
1205 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProcSubset=", | |
1206 | .description_good = "Service has no access to non-process /proc files (/proc subset=)", | |
1207 | .description_bad = "Service has full access to non-process /proc files (/proc subset=)", | |
1208 | .weight = 10, | |
1209 | .range = 1, | |
1210 | .assess = assess_proc_subset, | |
1211 | }, | |
ec16f3b6 LP |
1212 | { |
1213 | .id = "NotifyAccess=", | |
1214 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#NotifyAccess=", | |
1215 | .description_good = "Service child processes cannot alter service state", | |
1216 | .description_bad = "Service child processes may alter service state", | |
1217 | .weight = 1000, | |
1218 | .range = 1, | |
1219 | .assess = assess_notify_access, | |
1220 | }, | |
1221 | { | |
1222 | .id = "RemoveIPC=", | |
1223 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RemoveIPC=", | |
1224 | .description_good = "Service user cannot leave SysV IPC objects around", | |
1225 | .description_bad = "Service user may leave SysV IPC objects around", | |
1226 | .description_na = "Service runs as root, option does not apply", | |
1227 | .weight = 100, | |
1228 | .range = 1, | |
1229 | .assess = assess_remove_ipc, | |
1230 | .offset = offsetof(struct security_info, remove_ipc), | |
1231 | }, | |
1232 | { | |
1233 | .id = "Delegate=", | |
1234 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#Delegate=", | |
1235 | .description_good = "Service does not maintain its own delegated control group subtree", | |
1236 | .description_bad = "Service maintains its own delegated control group subtree", | |
1237 | .weight = 100, | |
1238 | .range = 1, | |
1239 | .assess = assess_bool, | |
1240 | .offset = offsetof(struct security_info, delegate), | |
1241 | .parameter = true, /* invert! */ | |
1242 | }, | |
1243 | { | |
1244 | .id = "RestrictRealtime=", | |
1245 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictRealtime=", | |
1246 | .description_good = "Service realtime scheduling access is restricted", | |
1247 | .description_bad = "Service may acquire realtime scheduling", | |
1248 | .weight = 500, | |
1249 | .range = 1, | |
1250 | .assess = assess_bool, | |
1251 | .offset = offsetof(struct security_info, restrict_realtime), | |
1252 | }, | |
9d880b70 LP |
1253 | { |
1254 | .id = "RestrictSUIDSGID=", | |
1255 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictSUIDSGID=", | |
1256 | .description_good = "SUID/SGID file creation by service is restricted", | |
1257 | .description_bad = "Service may create SUID/SGID files", | |
1258 | .weight = 1000, | |
1259 | .range = 1, | |
1260 | .assess = assess_bool, | |
1261 | .offset = offsetof(struct security_info, restrict_suid_sgid), | |
1262 | }, | |
ec16f3b6 LP |
1263 | { |
1264 | .id = "RestrictNamespaces=~CLONE_NEWUSER", | |
1265 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", | |
1266 | .description_good = "Service cannot create user namespaces", | |
1267 | .description_bad = "Service may create user namespaces", | |
1268 | .weight = 1500, | |
1269 | .range = 1, | |
1270 | .assess = assess_restrict_namespaces, | |
1271 | .parameter = CLONE_NEWUSER, | |
1272 | }, | |
1273 | { | |
1274 | .id = "RestrictNamespaces=~CLONE_NEWNS", | |
1275 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", | |
1276 | .description_good = "Service cannot create file system namespaces", | |
1277 | .description_bad = "Service may create file system namespaces", | |
1278 | .weight = 500, | |
1279 | .range = 1, | |
1280 | .assess = assess_restrict_namespaces, | |
1281 | .parameter = CLONE_NEWNS, | |
1282 | }, | |
1283 | { | |
1284 | .id = "RestrictNamespaces=~CLONE_NEWIPC", | |
1285 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", | |
1286 | .description_good = "Service cannot create IPC namespaces", | |
1287 | .description_bad = "Service may create IPC namespaces", | |
1288 | .weight = 500, | |
1289 | .range = 1, | |
1290 | .assess = assess_restrict_namespaces, | |
1291 | .parameter = CLONE_NEWIPC, | |
1292 | }, | |
1293 | { | |
1294 | .id = "RestrictNamespaces=~CLONE_NEWPID", | |
1295 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", | |
1296 | .description_good = "Service cannot create process namespaces", | |
1297 | .description_bad = "Service may create process namespaces", | |
1298 | .weight = 500, | |
1299 | .range = 1, | |
1300 | .assess = assess_restrict_namespaces, | |
1301 | .parameter = CLONE_NEWPID, | |
1302 | }, | |
1303 | { | |
1304 | .id = "RestrictNamespaces=~CLONE_NEWCGROUP", | |
1305 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", | |
1306 | .description_good = "Service cannot create cgroup namespaces", | |
1307 | .description_bad = "Service may create cgroup namespaces", | |
1308 | .weight = 500, | |
1309 | .range = 1, | |
1310 | .assess = assess_restrict_namespaces, | |
1311 | .parameter = CLONE_NEWCGROUP, | |
1312 | }, | |
1313 | { | |
1314 | .id = "RestrictNamespaces=~CLONE_NEWNET", | |
1315 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", | |
1316 | .description_good = "Service cannot create network namespaces", | |
1317 | .description_bad = "Service may create network namespaces", | |
1318 | .weight = 500, | |
1319 | .range = 1, | |
1320 | .assess = assess_restrict_namespaces, | |
1321 | .parameter = CLONE_NEWNET, | |
1322 | }, | |
1323 | { | |
1324 | .id = "RestrictNamespaces=~CLONE_NEWUTS", | |
1325 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", | |
1326 | .description_good = "Service cannot create hostname namespaces", | |
1327 | .description_bad = "Service may create hostname namespaces", | |
1328 | .weight = 100, | |
1329 | .range = 1, | |
1330 | .assess = assess_restrict_namespaces, | |
1331 | .parameter = CLONE_NEWUTS, | |
1332 | }, | |
1333 | { | |
1334 | .id = "RestrictAddressFamilies=~AF_(INET|INET6)", | |
1335 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=", | |
1336 | .description_good = "Service cannot allocate Internet sockets", | |
1337 | .description_bad = "Service may allocate Internet sockets", | |
1338 | .weight = 1500, | |
1339 | .range = 1, | |
1340 | .assess = assess_bool, | |
1341 | .offset = offsetof(struct security_info, restrict_address_family_inet), | |
1342 | }, | |
1343 | { | |
1344 | .id = "RestrictAddressFamilies=~AF_UNIX", | |
1345 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=", | |
1346 | .description_good = "Service cannot allocate local sockets", | |
1347 | .description_bad = "Service may allocate local sockets", | |
1348 | .weight = 25, | |
1349 | .range = 1, | |
1350 | .assess = assess_bool, | |
1351 | .offset = offsetof(struct security_info, restrict_address_family_unix), | |
1352 | }, | |
1353 | { | |
1354 | .id = "RestrictAddressFamilies=~AF_NETLINK", | |
1355 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=", | |
1356 | .description_good = "Service cannot allocate netlink sockets", | |
1357 | .description_bad = "Service may allocate netlink sockets", | |
1358 | .weight = 200, | |
1359 | .range = 1, | |
1360 | .assess = assess_bool, | |
1361 | .offset = offsetof(struct security_info, restrict_address_family_netlink), | |
1362 | }, | |
1363 | { | |
1364 | .id = "RestrictAddressFamilies=~AF_PACKET", | |
1365 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=", | |
1366 | .description_good = "Service cannot allocate packet sockets", | |
1367 | .description_bad = "Service may allocate packet sockets", | |
1368 | .weight = 1000, | |
1369 | .range = 1, | |
1370 | .assess = assess_bool, | |
1371 | .offset = offsetof(struct security_info, restrict_address_family_packet), | |
1372 | }, | |
1373 | { | |
1374 | .id = "RestrictAddressFamilies=~…", | |
1375 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=", | |
1376 | .description_good = "Service cannot allocate exotic sockets", | |
1377 | .description_bad = "Service may allocate exotic sockets", | |
1378 | .weight = 1250, | |
1379 | .range = 1, | |
1380 | .assess = assess_bool, | |
1381 | .offset = offsetof(struct security_info, restrict_address_family_other), | |
1382 | }, | |
1383 | { | |
1384 | .id = "SystemCallArchitectures=", | |
1385 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallArchitectures=", | |
1386 | .weight = 1000, | |
1387 | .range = 10, | |
1388 | .assess = assess_system_call_architectures, | |
1389 | }, | |
3a5d89fa | 1390 | #if HAVE_SECCOMP |
ec16f3b6 LP |
1391 | { |
1392 | .id = "SystemCallFilter=~@swap", | |
1393 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", | |
1394 | .weight = 1000, | |
1395 | .range = 10, | |
1396 | .assess = assess_system_call_filter, | |
1397 | .parameter = SYSCALL_FILTER_SET_SWAP, | |
1398 | }, | |
1399 | { | |
1400 | .id = "SystemCallFilter=~@obsolete", | |
1401 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", | |
1402 | .weight = 250, | |
1403 | .range = 10, | |
1404 | .assess = assess_system_call_filter, | |
1405 | .parameter = SYSCALL_FILTER_SET_OBSOLETE, | |
1406 | }, | |
1407 | { | |
1408 | .id = "SystemCallFilter=~@clock", | |
1409 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", | |
1410 | .weight = 1000, | |
1411 | .range = 10, | |
1412 | .assess = assess_system_call_filter, | |
1413 | .parameter = SYSCALL_FILTER_SET_CLOCK, | |
1414 | }, | |
1415 | { | |
1416 | .id = "SystemCallFilter=~@cpu-emulation", | |
1417 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", | |
1418 | .weight = 250, | |
1419 | .range = 10, | |
1420 | .assess = assess_system_call_filter, | |
1421 | .parameter = SYSCALL_FILTER_SET_CPU_EMULATION, | |
1422 | }, | |
1423 | { | |
1424 | .id = "SystemCallFilter=~@debug", | |
1425 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", | |
1426 | .weight = 1000, | |
1427 | .range = 10, | |
1428 | .assess = assess_system_call_filter, | |
1429 | .parameter = SYSCALL_FILTER_SET_DEBUG, | |
1430 | }, | |
1431 | { | |
1432 | .id = "SystemCallFilter=~@mount", | |
1433 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", | |
1434 | .weight = 1000, | |
1435 | .range = 10, | |
1436 | .assess = assess_system_call_filter, | |
1437 | .parameter = SYSCALL_FILTER_SET_MOUNT, | |
1438 | }, | |
1439 | { | |
1440 | .id = "SystemCallFilter=~@module", | |
1441 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", | |
1442 | .weight = 1000, | |
1443 | .range = 10, | |
1444 | .assess = assess_system_call_filter, | |
1445 | .parameter = SYSCALL_FILTER_SET_MODULE, | |
1446 | }, | |
1447 | { | |
1448 | .id = "SystemCallFilter=~@raw-io", | |
1449 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", | |
1450 | .weight = 1000, | |
1451 | .range = 10, | |
1452 | .assess = assess_system_call_filter, | |
1453 | .parameter = SYSCALL_FILTER_SET_RAW_IO, | |
1454 | }, | |
1455 | { | |
1456 | .id = "SystemCallFilter=~@reboot", | |
1457 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", | |
1458 | .weight = 1000, | |
1459 | .range = 10, | |
1460 | .assess = assess_system_call_filter, | |
1461 | .parameter = SYSCALL_FILTER_SET_REBOOT, | |
1462 | }, | |
1463 | { | |
1464 | .id = "SystemCallFilter=~@privileged", | |
1465 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", | |
1466 | .weight = 700, | |
1467 | .range = 10, | |
1468 | .assess = assess_system_call_filter, | |
1469 | .parameter = SYSCALL_FILTER_SET_PRIVILEGED, | |
1470 | }, | |
1471 | { | |
1472 | .id = "SystemCallFilter=~@resources", | |
1473 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", | |
1474 | .weight = 700, | |
1475 | .range = 10, | |
1476 | .assess = assess_system_call_filter, | |
1477 | .parameter = SYSCALL_FILTER_SET_RESOURCES, | |
1478 | }, | |
3a5d89fa | 1479 | #endif |
ec16f3b6 LP |
1480 | { |
1481 | .id = "IPAddressDeny=", | |
1482 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#IPAddressDeny=", | |
1483 | .weight = 1000, | |
1484 | .range = 10, | |
1485 | .assess = assess_ip_address_allow, | |
1486 | }, | |
1487 | { | |
1488 | .id = "DeviceAllow=", | |
1489 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#DeviceAllow=", | |
1490 | .weight = 1000, | |
1491 | .range = 10, | |
1492 | .assess = assess_device_allow, | |
1493 | }, | |
1494 | { | |
1495 | .id = "AmbientCapabilities=", | |
1496 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#AmbientCapabilities=", | |
1497 | .description_good = "Service process does not receive ambient capabilities", | |
1498 | .description_bad = "Service process receives ambient capabilities", | |
1499 | .weight = 500, | |
1500 | .range = 1, | |
1501 | .assess = assess_ambient_capabilities, | |
1502 | }, | |
1503 | }; | |
1504 | ||
1505 | static int assess(const struct security_info *info, Table *overview_table, AnalyzeSecurityFlags flags) { | |
1506 | static const struct { | |
1507 | uint64_t exposure; | |
1508 | const char *name; | |
1509 | const char *color; | |
1510 | SpecialGlyph smiley; | |
1511 | } badness_table[] = { | |
9a6f746f LP |
1512 | { 100, "DANGEROUS", ANSI_HIGHLIGHT_RED, SPECIAL_GLYPH_DEPRESSED_SMILEY }, |
1513 | { 90, "UNSAFE", ANSI_HIGHLIGHT_RED, SPECIAL_GLYPH_UNHAPPY_SMILEY }, | |
1514 | { 75, "EXPOSED", ANSI_HIGHLIGHT_YELLOW, SPECIAL_GLYPH_SLIGHTLY_UNHAPPY_SMILEY }, | |
1515 | { 50, "MEDIUM", NULL, SPECIAL_GLYPH_NEUTRAL_SMILEY }, | |
1516 | { 10, "OK", ANSI_HIGHLIGHT_GREEN, SPECIAL_GLYPH_SLIGHTLY_HAPPY_SMILEY }, | |
1517 | { 1, "SAFE", ANSI_HIGHLIGHT_GREEN, SPECIAL_GLYPH_HAPPY_SMILEY }, | |
1518 | { 0, "PERFECT", ANSI_HIGHLIGHT_GREEN, SPECIAL_GLYPH_ECSTATIC_SMILEY }, | |
ec16f3b6 LP |
1519 | }; |
1520 | ||
1521 | uint64_t badness_sum = 0, weight_sum = 0, exposure; | |
1522 | _cleanup_(table_unrefp) Table *details_table = NULL; | |
1523 | size_t i; | |
1524 | int r; | |
1525 | ||
1526 | if (!FLAGS_SET(flags, ANALYZE_SECURITY_SHORT)) { | |
9969b542 | 1527 | details_table = table_new(" ", "name", "description", "weight", "badness", "range", "exposure"); |
ec16f3b6 LP |
1528 | if (!details_table) |
1529 | return log_oom(); | |
1530 | ||
ad5555b4 | 1531 | (void) table_set_sort(details_table, (size_t) 3, (size_t) 1, (size_t) -1); |
ec16f3b6 LP |
1532 | (void) table_set_reverse(details_table, 3, true); |
1533 | ||
1534 | if (getenv_bool("SYSTEMD_ANALYZE_DEBUG") <= 0) | |
ad5555b4 | 1535 | (void) table_set_display(details_table, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 6, (size_t) -1); |
ec16f3b6 LP |
1536 | } |
1537 | ||
1538 | for (i = 0; i < ELEMENTSOF(security_assessor_table); i++) { | |
1539 | const struct security_assessor *a = security_assessor_table + i; | |
1540 | _cleanup_free_ char *d = NULL; | |
1541 | uint64_t badness; | |
1542 | void *data; | |
1543 | ||
1ace223c | 1544 | data = (uint8_t *) info + a->offset; |
ec16f3b6 LP |
1545 | |
1546 | if (a->default_dependencies_only && !info->default_dependencies) { | |
1547 | badness = UINT64_MAX; | |
1548 | d = strdup("Service runs in special boot phase, option does not apply"); | |
1549 | if (!d) | |
1550 | return log_oom(); | |
1551 | } else { | |
1552 | r = a->assess(a, info, data, &badness, &d); | |
1553 | if (r < 0) | |
1554 | return r; | |
1555 | } | |
1556 | ||
1557 | assert(a->range > 0); | |
1558 | ||
1559 | if (badness != UINT64_MAX) { | |
1560 | assert(badness <= a->range); | |
1561 | ||
1562 | badness_sum += DIV_ROUND_UP(badness * a->weight, a->range); | |
1563 | weight_sum += a->weight; | |
1564 | } | |
1565 | ||
1566 | if (details_table) { | |
1567 | const char *checkmark, *description, *color = NULL; | |
ec16f3b6 LP |
1568 | |
1569 | if (badness == UINT64_MAX) { | |
1570 | checkmark = " "; | |
1571 | description = a->description_na; | |
1572 | color = NULL; | |
1573 | } else if (badness == a->range) { | |
9a6f746f | 1574 | checkmark = special_glyph(SPECIAL_GLYPH_CROSS_MARK); |
ec16f3b6 LP |
1575 | description = a->description_bad; |
1576 | color = ansi_highlight_red(); | |
1577 | } else if (badness == 0) { | |
9a6f746f | 1578 | checkmark = special_glyph(SPECIAL_GLYPH_CHECK_MARK); |
ec16f3b6 LP |
1579 | description = a->description_good; |
1580 | color = ansi_highlight_green(); | |
1581 | } else { | |
9a6f746f | 1582 | checkmark = special_glyph(SPECIAL_GLYPH_CROSS_MARK); |
ec16f3b6 LP |
1583 | description = NULL; |
1584 | color = ansi_highlight_red(); | |
1585 | } | |
1586 | ||
1587 | if (d) | |
1588 | description = d; | |
1589 | ||
2cb434cf | 1590 | r = table_add_many(details_table, |
9c46b437 YW |
1591 | TABLE_STRING, checkmark, |
1592 | TABLE_SET_MINIMUM_WIDTH, 1, | |
1593 | TABLE_SET_MAXIMUM_WIDTH, 1, | |
1594 | TABLE_SET_ELLIPSIZE_PERCENT, 0, | |
1595 | TABLE_SET_COLOR, color, | |
2cb434cf LP |
1596 | TABLE_STRING, a->id, TABLE_SET_URL, a->url, |
1597 | TABLE_STRING, description, | |
1598 | TABLE_UINT64, a->weight, TABLE_SET_ALIGN_PERCENT, 100, | |
1599 | TABLE_UINT64, badness, TABLE_SET_ALIGN_PERCENT, 100, | |
1600 | TABLE_UINT64, a->range, TABLE_SET_ALIGN_PERCENT, 100, | |
1601 | TABLE_EMPTY, TABLE_SET_ALIGN_PERCENT, 100); | |
ec16f3b6 | 1602 | if (r < 0) |
9c46b437 | 1603 | return table_log_add_error(r); |
ec16f3b6 LP |
1604 | } |
1605 | } | |
1606 | ||
28a06f5a JS |
1607 | assert(weight_sum > 0); |
1608 | ||
ec16f3b6 LP |
1609 | if (details_table) { |
1610 | size_t row; | |
1611 | ||
1612 | for (row = 1; row < table_get_rows(details_table); row++) { | |
1613 | char buf[DECIMAL_STR_MAX(uint64_t) + 1 + DECIMAL_STR_MAX(uint64_t) + 1]; | |
1614 | const uint64_t *weight, *badness, *range; | |
1615 | TableCell *cell; | |
1616 | uint64_t x; | |
1617 | ||
1618 | assert_se(weight = table_get_at(details_table, row, 3)); | |
1619 | assert_se(badness = table_get_at(details_table, row, 4)); | |
1620 | assert_se(range = table_get_at(details_table, row, 5)); | |
1621 | ||
1622 | if (*badness == UINT64_MAX || *badness == 0) | |
1623 | continue; | |
1624 | ||
1625 | assert_se(cell = table_get_cell(details_table, row, 6)); | |
1626 | ||
1627 | x = DIV_ROUND_UP(DIV_ROUND_UP(*badness * *weight * 100U, *range), weight_sum); | |
1628 | xsprintf(buf, "%" PRIu64 ".%" PRIu64, x / 10, x % 10); | |
1629 | ||
1630 | r = table_update(details_table, cell, TABLE_STRING, buf); | |
1631 | if (r < 0) | |
1632 | return log_error_errno(r, "Failed to update cell in table: %m"); | |
1633 | } | |
1634 | ||
1635 | r = table_print(details_table, stdout); | |
1636 | if (r < 0) | |
1637 | return log_error_errno(r, "Failed to output table: %m"); | |
1638 | } | |
1639 | ||
1640 | exposure = DIV_ROUND_UP(badness_sum * 100U, weight_sum); | |
1641 | ||
1642 | for (i = 0; i < ELEMENTSOF(badness_table); i++) | |
1643 | if (exposure >= badness_table[i].exposure) | |
1644 | break; | |
1645 | ||
1646 | assert(i < ELEMENTSOF(badness_table)); | |
1647 | ||
1648 | if (details_table) { | |
1649 | _cleanup_free_ char *clickable = NULL; | |
1650 | const char *name; | |
1651 | ||
1652 | /* If we shall output the details table, also print the brief summary underneath */ | |
1653 | ||
1654 | if (info->fragment_path) { | |
1655 | r = terminal_urlify_path(info->fragment_path, info->id, &clickable); | |
1656 | if (r < 0) | |
1657 | return log_oom(); | |
1658 | ||
1659 | name = clickable; | |
1660 | } else | |
1661 | name = info->id; | |
1662 | ||
1663 | printf("\n%s %sOverall exposure level for %s%s: %s%" PRIu64 ".%" PRIu64 " %s%s %s\n", | |
9a6f746f | 1664 | special_glyph(SPECIAL_GLYPH_ARROW), |
ec16f3b6 LP |
1665 | ansi_highlight(), |
1666 | name, | |
1667 | ansi_normal(), | |
1668 | colors_enabled() ? strempty(badness_table[i].color) : "", | |
1669 | exposure / 10, exposure % 10, | |
1670 | badness_table[i].name, | |
1671 | ansi_normal(), | |
1672 | special_glyph(badness_table[i].smiley)); | |
1673 | } | |
1674 | ||
1675 | fflush(stdout); | |
1676 | ||
1677 | if (overview_table) { | |
1678 | char buf[DECIMAL_STR_MAX(uint64_t) + 1 + DECIMAL_STR_MAX(uint64_t) + 1]; | |
9c46b437 | 1679 | _cleanup_free_ char *url = NULL; |
ec16f3b6 | 1680 | |
ec16f3b6 | 1681 | if (info->fragment_path) { |
ec16f3b6 LP |
1682 | r = file_url_from_path(info->fragment_path, &url); |
1683 | if (r < 0) | |
1684 | return log_error_errno(r, "Failed to generate URL from path: %m"); | |
ec16f3b6 LP |
1685 | } |
1686 | ||
1687 | xsprintf(buf, "%" PRIu64 ".%" PRIu64, exposure / 10, exposure % 10); | |
ec16f3b6 | 1688 | |
9c46b437 YW |
1689 | r = table_add_many(overview_table, |
1690 | TABLE_STRING, info->id, | |
1691 | TABLE_SET_URL, url, | |
1692 | TABLE_STRING, buf, | |
1693 | TABLE_SET_ALIGN_PERCENT, 100, | |
1694 | TABLE_STRING, badness_table[i].name, | |
1695 | TABLE_SET_COLOR, strempty(badness_table[i].color), | |
1696 | TABLE_STRING, special_glyph(badness_table[i].smiley)); | |
ec16f3b6 | 1697 | if (r < 0) |
9c46b437 | 1698 | return table_log_add_error(r); |
ec16f3b6 LP |
1699 | } |
1700 | ||
1701 | return 0; | |
1702 | } | |
1703 | ||
1704 | static int property_read_restrict_address_families( | |
1705 | sd_bus *bus, | |
1706 | const char *member, | |
1707 | sd_bus_message *m, | |
1708 | sd_bus_error *error, | |
1709 | void *userdata) { | |
1710 | ||
1711 | struct security_info *info = userdata; | |
6b000af4 | 1712 | int allow_list, r; |
ec16f3b6 LP |
1713 | |
1714 | assert(bus); | |
1715 | assert(member); | |
1716 | assert(m); | |
1717 | ||
1718 | r = sd_bus_message_enter_container(m, 'r', "bas"); | |
1719 | if (r < 0) | |
1720 | return r; | |
1721 | ||
6b000af4 | 1722 | r = sd_bus_message_read(m, "b", &allow_list); |
ec16f3b6 LP |
1723 | if (r < 0) |
1724 | return r; | |
1725 | ||
1726 | info->restrict_address_family_inet = | |
1727 | info->restrict_address_family_unix = | |
1728 | info->restrict_address_family_netlink = | |
1729 | info->restrict_address_family_packet = | |
6b000af4 | 1730 | info->restrict_address_family_other = allow_list; |
ec16f3b6 LP |
1731 | |
1732 | r = sd_bus_message_enter_container(m, 'a', "s"); | |
1733 | if (r < 0) | |
1734 | return r; | |
1735 | ||
1736 | for (;;) { | |
1737 | const char *name; | |
1738 | ||
1739 | r = sd_bus_message_read(m, "s", &name); | |
1740 | if (r < 0) | |
1741 | return r; | |
1742 | if (r == 0) | |
1743 | break; | |
1744 | ||
1745 | if (STR_IN_SET(name, "AF_INET", "AF_INET6")) | |
6b000af4 | 1746 | info->restrict_address_family_inet = !allow_list; |
ec16f3b6 | 1747 | else if (streq(name, "AF_UNIX")) |
6b000af4 | 1748 | info->restrict_address_family_unix = !allow_list; |
ec16f3b6 | 1749 | else if (streq(name, "AF_NETLINK")) |
6b000af4 | 1750 | info->restrict_address_family_netlink = !allow_list; |
ec16f3b6 | 1751 | else if (streq(name, "AF_PACKET")) |
6b000af4 | 1752 | info->restrict_address_family_packet = !allow_list; |
ec16f3b6 | 1753 | else |
6b000af4 | 1754 | info->restrict_address_family_other = !allow_list; |
ec16f3b6 LP |
1755 | } |
1756 | ||
1757 | r = sd_bus_message_exit_container(m); | |
1758 | if (r < 0) | |
1759 | return r; | |
1760 | ||
1761 | return sd_bus_message_exit_container(m); | |
1762 | } | |
1763 | ||
1764 | static int property_read_system_call_filter( | |
1765 | sd_bus *bus, | |
1766 | const char *member, | |
1767 | sd_bus_message *m, | |
1768 | sd_bus_error *error, | |
1769 | void *userdata) { | |
1770 | ||
1771 | struct security_info *info = userdata; | |
6b000af4 | 1772 | int allow_list, r; |
ec16f3b6 LP |
1773 | |
1774 | assert(bus); | |
1775 | assert(member); | |
1776 | assert(m); | |
1777 | ||
1778 | r = sd_bus_message_enter_container(m, 'r', "bas"); | |
1779 | if (r < 0) | |
1780 | return r; | |
1781 | ||
6b000af4 | 1782 | r = sd_bus_message_read(m, "b", &allow_list); |
ec16f3b6 LP |
1783 | if (r < 0) |
1784 | return r; | |
1785 | ||
6b000af4 | 1786 | info->system_call_filter_allow_list = allow_list; |
ec16f3b6 LP |
1787 | |
1788 | r = sd_bus_message_enter_container(m, 'a', "s"); | |
1789 | if (r < 0) | |
1790 | return r; | |
1791 | ||
1792 | for (;;) { | |
1793 | const char *name; | |
1794 | ||
1795 | r = sd_bus_message_read(m, "s", &name); | |
1796 | if (r < 0) | |
1797 | return r; | |
1798 | if (r == 0) | |
1799 | break; | |
1800 | ||
be327321 | 1801 | r = set_put_strdup(&info->system_call_filter, name); |
ec16f3b6 LP |
1802 | if (r < 0) |
1803 | return r; | |
1804 | } | |
1805 | ||
1806 | r = sd_bus_message_exit_container(m); | |
1807 | if (r < 0) | |
1808 | return r; | |
1809 | ||
1810 | return sd_bus_message_exit_container(m); | |
1811 | } | |
1812 | ||
1813 | static int property_read_ip_address_allow( | |
1814 | sd_bus *bus, | |
1815 | const char *member, | |
1816 | sd_bus_message *m, | |
1817 | sd_bus_error *error, | |
1818 | void *userdata) { | |
1819 | ||
1820 | struct security_info *info = userdata; | |
1821 | bool deny_ipv4 = false, deny_ipv6 = false; | |
1822 | int r; | |
1823 | ||
1824 | assert(bus); | |
1825 | assert(member); | |
1826 | assert(m); | |
1827 | ||
1828 | r = sd_bus_message_enter_container(m, 'a', "(iayu)"); | |
1829 | if (r < 0) | |
1830 | return r; | |
1831 | ||
1832 | for (;;) { | |
1833 | const void *data; | |
1834 | size_t size; | |
1835 | int32_t family; | |
1836 | uint32_t prefixlen; | |
1837 | ||
1838 | r = sd_bus_message_enter_container(m, 'r', "iayu"); | |
1839 | if (r < 0) | |
1840 | return r; | |
1841 | if (r == 0) | |
1842 | break; | |
1843 | ||
1844 | r = sd_bus_message_read(m, "i", &family); | |
1845 | if (r < 0) | |
1846 | return r; | |
1847 | ||
1848 | r = sd_bus_message_read_array(m, 'y', &data, &size); | |
1849 | if (r < 0) | |
1850 | return r; | |
1851 | ||
1852 | r = sd_bus_message_read(m, "u", &prefixlen); | |
1853 | if (r < 0) | |
1854 | return r; | |
1855 | ||
1856 | r = sd_bus_message_exit_container(m); | |
1857 | if (r < 0) | |
1858 | return r; | |
1859 | ||
1860 | if (streq(member, "IPAddressAllow")) { | |
1861 | union in_addr_union u; | |
1862 | ||
1863 | if (family == AF_INET && size == 4 && prefixlen == 8) | |
1864 | memcpy(&u.in, data, size); | |
1865 | else if (family == AF_INET6 && size == 16 && prefixlen == 128) | |
1866 | memcpy(&u.in6, data, size); | |
1867 | else { | |
1868 | info->ip_address_allow_other = true; | |
1869 | continue; | |
1870 | } | |
1871 | ||
1872 | if (in_addr_is_localhost(family, &u)) | |
1873 | info->ip_address_allow_localhost = true; | |
1874 | else | |
1875 | info->ip_address_allow_other = true; | |
1876 | } else { | |
1877 | assert(streq(member, "IPAddressDeny")); | |
1878 | ||
1879 | if (family == AF_INET && size == 4 && prefixlen == 0) | |
1880 | deny_ipv4 = true; | |
1881 | else if (family == AF_INET6 && size == 16 && prefixlen == 0) | |
1882 | deny_ipv6 = true; | |
1883 | } | |
1884 | } | |
1885 | ||
1886 | info->ip_address_deny_all = deny_ipv4 && deny_ipv6; | |
1887 | ||
1888 | return sd_bus_message_exit_container(m); | |
1889 | } | |
1890 | ||
fab34748 KL |
1891 | static int property_read_ip_filters( |
1892 | sd_bus *bus, | |
1893 | const char *member, | |
1894 | sd_bus_message *m, | |
1895 | sd_bus_error *error, | |
1896 | void *userdata) { | |
1897 | ||
1898 | struct security_info *info = userdata; | |
1899 | _cleanup_(strv_freep) char **l = NULL; | |
1900 | int r; | |
1901 | ||
1902 | assert(bus); | |
1903 | assert(member); | |
1904 | assert(m); | |
1905 | ||
1906 | r = sd_bus_message_read_strv(m, &l); | |
1907 | if (r < 0) | |
1908 | return r; | |
1909 | ||
1910 | if (streq(member, "IPIngressFilterPath")) | |
1911 | info->ip_filters_custom_ingress = !strv_isempty(l); | |
1912 | else if (streq(member, "IPEgressFilterPath")) | |
1913 | info->ip_filters_custom_ingress = !strv_isempty(l); | |
1914 | ||
1915 | return 0; | |
1916 | } | |
1917 | ||
ec16f3b6 LP |
1918 | static int property_read_device_allow( |
1919 | sd_bus *bus, | |
1920 | const char *member, | |
1921 | sd_bus_message *m, | |
1922 | sd_bus_error *error, | |
1923 | void *userdata) { | |
1924 | ||
1925 | struct security_info *info = userdata; | |
1926 | size_t n = 0; | |
1927 | int r; | |
1928 | ||
1929 | assert(bus); | |
1930 | assert(member); | |
1931 | assert(m); | |
1932 | ||
1933 | r = sd_bus_message_enter_container(m, 'a', "(ss)"); | |
1934 | if (r < 0) | |
1935 | return r; | |
1936 | ||
1937 | for (;;) { | |
1938 | const char *name, *policy; | |
1939 | ||
1940 | r = sd_bus_message_read(m, "(ss)", &name, &policy); | |
1941 | if (r < 0) | |
1942 | return r; | |
1943 | if (r == 0) | |
1944 | break; | |
1945 | ||
1946 | n++; | |
1947 | } | |
1948 | ||
1949 | info->device_allow_non_empty = n > 0; | |
1950 | ||
1951 | return sd_bus_message_exit_container(m); | |
1952 | } | |
1953 | ||
1954 | static int acquire_security_info(sd_bus *bus, const char *name, struct security_info *info, AnalyzeSecurityFlags flags) { | |
1955 | ||
1956 | static const struct bus_properties_map security_map[] = { | |
1957 | { "AmbientCapabilities", "t", NULL, offsetof(struct security_info, ambient_capabilities) }, | |
1958 | { "CapabilityBoundingSet", "t", NULL, offsetof(struct security_info, capability_bounding_set) }, | |
1959 | { "DefaultDependencies", "b", NULL, offsetof(struct security_info, default_dependencies) }, | |
1960 | { "Delegate", "b", NULL, offsetof(struct security_info, delegate) }, | |
1961 | { "DeviceAllow", "a(ss)", property_read_device_allow, 0 }, | |
1962 | { "DevicePolicy", "s", NULL, offsetof(struct security_info, device_policy) }, | |
1963 | { "DynamicUser", "b", NULL, offsetof(struct security_info, dynamic_user) }, | |
1964 | { "FragmentPath", "s", NULL, offsetof(struct security_info, fragment_path) }, | |
1965 | { "IPAddressAllow", "a(iayu)", property_read_ip_address_allow, 0 }, | |
1966 | { "IPAddressDeny", "a(iayu)", property_read_ip_address_allow, 0 }, | |
fab34748 KL |
1967 | { "IPIngressFilterPath", "as", property_read_ip_filters, 0 }, |
1968 | { "IPEgressFilterPath", "as", property_read_ip_filters, 0 }, | |
ec16f3b6 LP |
1969 | { "Id", "s", NULL, offsetof(struct security_info, id) }, |
1970 | { "KeyringMode", "s", NULL, offsetof(struct security_info, keyring_mode) }, | |
ed125c93 LP |
1971 | { "ProtectProc", "s", NULL, offsetof(struct security_info, protect_proc) }, |
1972 | { "ProcSubset", "s", NULL, offsetof(struct security_info, proc_subset) }, | |
ec16f3b6 LP |
1973 | { "LoadState", "s", NULL, offsetof(struct security_info, load_state) }, |
1974 | { "LockPersonality", "b", NULL, offsetof(struct security_info, lock_personality) }, | |
1975 | { "MemoryDenyWriteExecute", "b", NULL, offsetof(struct security_info, memory_deny_write_execute) }, | |
1976 | { "NoNewPrivileges", "b", NULL, offsetof(struct security_info, no_new_privileges) }, | |
1977 | { "NotifyAccess", "s", NULL, offsetof(struct security_info, notify_access) }, | |
1978 | { "PrivateDevices", "b", NULL, offsetof(struct security_info, private_devices) }, | |
1979 | { "PrivateMounts", "b", NULL, offsetof(struct security_info, private_mounts) }, | |
1980 | { "PrivateNetwork", "b", NULL, offsetof(struct security_info, private_network) }, | |
1981 | { "PrivateTmp", "b", NULL, offsetof(struct security_info, private_tmp) }, | |
1982 | { "PrivateUsers", "b", NULL, offsetof(struct security_info, private_users) }, | |
ec16f3b6 LP |
1983 | { "ProtectControlGroups", "b", NULL, offsetof(struct security_info, protect_control_groups) }, |
1984 | { "ProtectHome", "s", NULL, offsetof(struct security_info, protect_home) }, | |
527bd7f1 | 1985 | { "ProtectHostname", "b", NULL, offsetof(struct security_info, protect_hostname) }, |
ec16f3b6 LP |
1986 | { "ProtectKernelModules", "b", NULL, offsetof(struct security_info, protect_kernel_modules) }, |
1987 | { "ProtectKernelTunables", "b", NULL, offsetof(struct security_info, protect_kernel_tunables) }, | |
82dce83b | 1988 | { "ProtectKernelLogs", "b", NULL, offsetof(struct security_info, protect_kernel_logs) }, |
9f37272a | 1989 | { "ProtectClock", "b", NULL, offsetof(struct security_info, protect_clock) }, |
ec16f3b6 LP |
1990 | { "ProtectSystem", "s", NULL, offsetof(struct security_info, protect_system) }, |
1991 | { "RemoveIPC", "b", NULL, offsetof(struct security_info, remove_ipc) }, | |
1992 | { "RestrictAddressFamilies", "(bas)", property_read_restrict_address_families, 0 }, | |
1993 | { "RestrictNamespaces", "t", NULL, offsetof(struct security_info, restrict_namespaces) }, | |
1994 | { "RestrictRealtime", "b", NULL, offsetof(struct security_info, restrict_realtime) }, | |
9d880b70 | 1995 | { "RestrictSUIDSGID", "b", NULL, offsetof(struct security_info, restrict_suid_sgid) }, |
ec16f3b6 LP |
1996 | { "RootDirectory", "s", NULL, offsetof(struct security_info, root_directory) }, |
1997 | { "RootImage", "s", NULL, offsetof(struct security_info, root_image) }, | |
1998 | { "SupplementaryGroups", "as", NULL, offsetof(struct security_info, supplementary_groups) }, | |
1999 | { "SystemCallArchitectures", "as", NULL, offsetof(struct security_info, system_call_architectures) }, | |
2000 | { "SystemCallFilter", "(as)", property_read_system_call_filter, 0 }, | |
2001 | { "Type", "s", NULL, offsetof(struct security_info, type) }, | |
2002 | { "UMask", "u", NULL, offsetof(struct security_info, _umask) }, | |
2003 | { "User", "s", NULL, offsetof(struct security_info, user) }, | |
2004 | {} | |
2005 | }; | |
2006 | ||
2007 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
2008 | _cleanup_free_ char *path = NULL; | |
2009 | int r; | |
2010 | ||
2011 | /* Note: this mangles *info on failure! */ | |
2012 | ||
2013 | assert(bus); | |
2014 | assert(name); | |
2015 | assert(info); | |
2016 | ||
2017 | path = unit_dbus_path_from_name(name); | |
2018 | if (!path) | |
2019 | return log_oom(); | |
2020 | ||
1ace223c SJ |
2021 | r = bus_map_all_properties( |
2022 | bus, | |
2023 | "org.freedesktop.systemd1", | |
2024 | path, | |
2025 | security_map, | |
2026 | BUS_MAP_STRDUP | BUS_MAP_BOOLEAN_AS_BOOL, | |
2027 | &error, | |
2028 | NULL, | |
2029 | info); | |
ec16f3b6 LP |
2030 | if (r < 0) |
2031 | return log_error_errno(r, "Failed to get unit properties: %s", bus_error_message(&error, r)); | |
2032 | ||
2033 | if (!streq_ptr(info->load_state, "loaded")) { | |
2034 | ||
2035 | if (FLAGS_SET(flags, ANALYZE_SECURITY_ONLY_LOADED)) | |
2036 | return -EMEDIUMTYPE; | |
2037 | ||
2038 | if (streq_ptr(info->load_state, "not-found")) | |
2039 | log_error("Unit %s not found, cannot analyze.", name); | |
2040 | else if (streq_ptr(info->load_state, "masked")) | |
2041 | log_error("Unit %s is masked, cannot analyze.", name); | |
2042 | else | |
2043 | log_error("Unit %s not loaded properly, cannot analyze.", name); | |
2044 | ||
2045 | return -EINVAL; | |
2046 | } | |
2047 | ||
2048 | if (FLAGS_SET(flags, ANALYZE_SECURITY_ONLY_LONG_RUNNING) && streq_ptr(info->type, "oneshot")) | |
2049 | return -EMEDIUMTYPE; | |
2050 | ||
2051 | if (info->private_devices || | |
2052 | info->private_tmp || | |
2053 | info->protect_control_groups || | |
2054 | info->protect_kernel_tunables || | |
2055 | info->protect_kernel_modules || | |
2056 | !streq_ptr(info->protect_home, "no") || | |
2057 | !streq_ptr(info->protect_system, "no") || | |
2058 | info->root_image) | |
2059 | info->private_mounts = true; | |
2060 | ||
2061 | if (info->protect_kernel_modules) | |
2062 | info->capability_bounding_set &= ~(UINT64_C(1) << CAP_SYS_MODULE); | |
2063 | ||
82dce83b KK |
2064 | if (info->protect_kernel_logs) |
2065 | info->capability_bounding_set &= ~(UINT64_C(1) << CAP_SYSLOG); | |
2066 | ||
9f37272a KK |
2067 | if (info->protect_clock) |
2068 | info->capability_bounding_set &= ~((UINT64_C(1) << CAP_SYS_TIME) | | |
2069 | (UINT64_C(1) << CAP_WAKE_ALARM)); | |
2070 | ||
ec16f3b6 LP |
2071 | if (info->private_devices) |
2072 | info->capability_bounding_set &= ~((UINT64_C(1) << CAP_MKNOD) | | |
2073 | (UINT64_C(1) << CAP_SYS_RAWIO)); | |
2074 | ||
2075 | return 0; | |
2076 | } | |
2077 | ||
1ace223c | 2078 | static int analyze_security_one(sd_bus *bus, const char *name, Table *overview_table, AnalyzeSecurityFlags flags) { |
ec16f3b6 LP |
2079 | _cleanup_(security_info_free) struct security_info info = { |
2080 | .default_dependencies = true, | |
2081 | .capability_bounding_set = UINT64_MAX, | |
2082 | .restrict_namespaces = UINT64_MAX, | |
2083 | ._umask = 0002, | |
2084 | }; | |
2085 | int r; | |
2086 | ||
2087 | assert(bus); | |
2088 | assert(name); | |
2089 | ||
2090 | r = acquire_security_info(bus, name, &info, flags); | |
2091 | if (r == -EMEDIUMTYPE) /* Ignore this one because not loaded or Type is oneshot */ | |
2092 | return 0; | |
2093 | if (r < 0) | |
2094 | return r; | |
2095 | ||
2096 | r = assess(&info, overview_table, flags); | |
2097 | if (r < 0) | |
2098 | return r; | |
2099 | ||
2100 | return 0; | |
2101 | } | |
2102 | ||
2103 | int analyze_security(sd_bus *bus, char **units, AnalyzeSecurityFlags flags) { | |
2104 | _cleanup_(table_unrefp) Table *overview_table = NULL; | |
2105 | int ret = 0, r; | |
2106 | ||
2107 | assert(bus); | |
2108 | ||
2109 | if (strv_length(units) != 1) { | |
9969b542 | 2110 | overview_table = table_new("unit", "exposure", "predicate", "happy"); |
ec16f3b6 LP |
2111 | if (!overview_table) |
2112 | return log_oom(); | |
2113 | } | |
2114 | ||
2115 | if (strv_isempty(units)) { | |
2116 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
2117 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; | |
2118 | _cleanup_strv_free_ char **list = NULL; | |
2119 | size_t allocated = 0, n = 0; | |
2120 | char **i; | |
2121 | ||
2122 | r = sd_bus_call_method( | |
2123 | bus, | |
2124 | "org.freedesktop.systemd1", | |
2125 | "/org/freedesktop/systemd1", | |
2126 | "org.freedesktop.systemd1.Manager", | |
2127 | "ListUnits", | |
1ace223c SJ |
2128 | &error, |
2129 | &reply, | |
ec16f3b6 LP |
2130 | NULL); |
2131 | if (r < 0) | |
2132 | return log_error_errno(r, "Failed to list units: %s", bus_error_message(&error, r)); | |
2133 | ||
2134 | r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)"); | |
2135 | if (r < 0) | |
2136 | return bus_log_parse_error(r); | |
2137 | ||
2138 | for (;;) { | |
2139 | UnitInfo info; | |
2140 | char *copy = NULL; | |
2141 | ||
2142 | r = bus_parse_unit_info(reply, &info); | |
2143 | if (r < 0) | |
2144 | return bus_log_parse_error(r); | |
2145 | if (r == 0) | |
2146 | break; | |
2147 | ||
2148 | if (!endswith(info.id, ".service")) | |
2149 | continue; | |
2150 | ||
1ace223c | 2151 | if (!GREEDY_REALLOC(list, allocated, n + 2)) |
ec16f3b6 LP |
2152 | return log_oom(); |
2153 | ||
2154 | copy = strdup(info.id); | |
2155 | if (!copy) | |
2156 | return log_oom(); | |
2157 | ||
2158 | list[n++] = copy; | |
2159 | list[n] = NULL; | |
2160 | } | |
2161 | ||
2162 | strv_sort(list); | |
2163 | ||
2164 | flags |= ANALYZE_SECURITY_SHORT|ANALYZE_SECURITY_ONLY_LOADED|ANALYZE_SECURITY_ONLY_LONG_RUNNING; | |
2165 | ||
2166 | STRV_FOREACH(i, list) { | |
2167 | r = analyze_security_one(bus, *i, overview_table, flags); | |
2168 | if (r < 0 && ret >= 0) | |
2169 | ret = r; | |
2170 | } | |
2171 | ||
2172 | } else { | |
2173 | char **i; | |
2174 | ||
2175 | STRV_FOREACH(i, units) { | |
2176 | _cleanup_free_ char *mangled = NULL, *instance = NULL; | |
2177 | const char *name; | |
2178 | ||
2179 | if (!FLAGS_SET(flags, ANALYZE_SECURITY_SHORT) && i != units) { | |
2180 | putc('\n', stdout); | |
2181 | fflush(stdout); | |
2182 | } | |
2183 | ||
df7c4eb6 | 2184 | r = unit_name_mangle(*i, 0, &mangled); |
ec16f3b6 LP |
2185 | if (r < 0) |
2186 | return log_error_errno(r, "Failed to mangle unit name '%s': %m", *i); | |
2187 | ||
d7a0f1f4 FS |
2188 | if (!endswith(mangled, ".service")) |
2189 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2190 | "Unit %s is not a service unit, refusing.", | |
2191 | *i); | |
ec16f3b6 LP |
2192 | |
2193 | if (unit_name_is_valid(mangled, UNIT_NAME_TEMPLATE)) { | |
2194 | r = unit_name_replace_instance(mangled, "test-instance", &instance); | |
2195 | if (r < 0) | |
2196 | return log_oom(); | |
2197 | ||
2198 | name = instance; | |
2199 | } else | |
2200 | name = mangled; | |
2201 | ||
2202 | r = analyze_security_one(bus, name, overview_table, flags); | |
2203 | if (r < 0 && ret >= 0) | |
2204 | ret = r; | |
2205 | } | |
2206 | } | |
2207 | ||
2208 | if (overview_table) { | |
2209 | if (!FLAGS_SET(flags, ANALYZE_SECURITY_SHORT)) { | |
2210 | putc('\n', stdout); | |
2211 | fflush(stdout); | |
2212 | } | |
2213 | ||
2214 | r = table_print(overview_table, stdout); | |
2215 | if (r < 0) | |
2216 | return log_error_errno(r, "Failed to output table: %m"); | |
2217 | } | |
2218 | ||
2219 | return ret; | |
2220 | } |