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-rw-r--r--src/analyze/analyze-security.c2962
1 files changed, 2962 insertions, 0 deletions
diff --git a/src/analyze/analyze-security.c b/src/analyze/analyze-security.c
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+++ b/src/analyze/analyze-security.c
@@ -0,0 +1,2962 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <sys/utsname.h>
+
+#include "af-list.h"
+#include "analyze.h"
+#include "analyze-security.h"
+#include "analyze-verify.h"
+#include "bus-error.h"
+#include "bus-locator.h"
+#include "bus-map-properties.h"
+#include "bus-unit-util.h"
+#include "bus-util.h"
+#include "copy.h"
+#include "env-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "format-table.h"
+#include "in-addr-prefix-util.h"
+#include "locale-util.h"
+#include "macro.h"
+#include "manager.h"
+#include "missing_capability.h"
+#include "missing_sched.h"
+#include "mkdir.h"
+#include "nulstr-util.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "pretty-print.h"
+#if HAVE_SECCOMP
+# include "seccomp-util.h"
+#endif
+#include "service.h"
+#include "set.h"
+#include "stdio-util.h"
+#include "strv.h"
+#include "terminal-util.h"
+#include "unit-def.h"
+#include "unit-name.h"
+#include "unit-serialize.h"
+
+typedef struct SecurityInfo {
+ char *id;
+ char *type;
+ char *load_state;
+ char *fragment_path;
+ bool default_dependencies;
+
+ uint64_t ambient_capabilities;
+ uint64_t capability_bounding_set;
+
+ char *user;
+ char **supplementary_groups;
+ bool dynamic_user;
+
+ bool ip_address_deny_all;
+ bool ip_address_allow_localhost;
+ bool ip_address_allow_other;
+
+ bool ip_filters_custom_ingress;
+ bool ip_filters_custom_egress;
+
+ char *keyring_mode;
+ char *protect_proc;
+ char *proc_subset;
+ bool lock_personality;
+ bool memory_deny_write_execute;
+ bool no_new_privileges;
+ char *notify_access;
+ bool protect_hostname;
+
+ bool private_devices;
+ bool private_mounts;
+ bool private_network;
+ bool private_tmp;
+ bool private_users;
+
+ bool protect_control_groups;
+ bool protect_kernel_modules;
+ bool protect_kernel_tunables;
+ bool protect_kernel_logs;
+ bool protect_clock;
+
+ char *protect_home;
+ char *protect_system;
+
+ bool remove_ipc;
+
+ bool restrict_address_family_inet;
+ bool restrict_address_family_unix;
+ bool restrict_address_family_netlink;
+ bool restrict_address_family_packet;
+ bool restrict_address_family_other;
+
+ unsigned long long restrict_namespaces;
+ bool restrict_realtime;
+ bool restrict_suid_sgid;
+
+ char *root_directory;
+ char *root_image;
+
+ bool delegate;
+ char *device_policy;
+ char **device_allow;
+
+ Set *system_call_architectures;
+
+ bool system_call_filter_allow_list;
+ Set *system_call_filter;
+
+ mode_t _umask;
+} SecurityInfo;
+
+struct security_assessor {
+ const char *id;
+ const char *json_field;
+ const char *description_good;
+ const char *description_bad;
+ const char *description_na;
+ const char *url;
+ uint64_t weight;
+ uint64_t range;
+ int (*assess)(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description);
+ size_t offset;
+ uint64_t parameter;
+ bool default_dependencies_only;
+};
+
+static SecurityInfo *security_info_new(void) {
+ SecurityInfo *info = new(SecurityInfo, 1);
+ if (!info)
+ return NULL;
+
+ *info = (SecurityInfo) {
+ .default_dependencies = true,
+ .capability_bounding_set = UINT64_MAX,
+ .restrict_namespaces = UINT64_MAX,
+ ._umask = 0002,
+ };
+
+ return info;
+}
+
+static SecurityInfo *security_info_free(SecurityInfo *i) {
+ if (!i)
+ return NULL;
+
+ free(i->id);
+ free(i->type);
+ free(i->load_state);
+ free(i->fragment_path);
+
+ free(i->user);
+
+ free(i->protect_home);
+ free(i->protect_system);
+
+ free(i->root_directory);
+ free(i->root_image);
+
+ free(i->keyring_mode);
+ free(i->protect_proc);
+ free(i->proc_subset);
+ free(i->notify_access);
+
+ free(i->device_policy);
+ strv_free(i->device_allow);
+
+ strv_free(i->supplementary_groups);
+ set_free(i->system_call_architectures);
+ set_free(i->system_call_filter);
+
+ return mfree(i);
+}
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(SecurityInfo*, security_info_free);
+
+static bool security_info_runs_privileged(const SecurityInfo *i) {
+ assert(i);
+
+ if (STRPTR_IN_SET(i->user, "0", "root"))
+ return true;
+
+ if (i->dynamic_user)
+ return false;
+
+ return isempty(i->user);
+}
+
+static int assess_bool(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ const bool *b = ASSERT_PTR(data);
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ *ret_badness = a->parameter ? *b : !*b;
+ *ret_description = NULL;
+
+ return 0;
+}
+
+static int assess_user(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ _cleanup_free_ char *d = NULL;
+ uint64_t b;
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ if (streq_ptr(info->user, NOBODY_USER_NAME)) {
+ d = strdup("Service runs under as '" NOBODY_USER_NAME "' user, which should not be used for services");
+ b = 9;
+ } else if (info->dynamic_user && !STR_IN_SET(info->user, "0", "root")) {
+ d = strdup("Service runs under a transient non-root user identity");
+ b = 0;
+ } else if (info->user && !STR_IN_SET(info->user, "0", "root", "")) {
+ d = strdup("Service runs under a static non-root user identity");
+ b = 0;
+ } else {
+ *ret_badness = 10;
+ *ret_description = NULL;
+ return 0;
+ }
+
+ if (!d)
+ return log_oom();
+
+ *ret_badness = b;
+ *ret_description = TAKE_PTR(d);
+
+ return 0;
+}
+
+static int assess_protect_home(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ const char *description;
+ uint64_t badness;
+ char *copy;
+ int r;
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ badness = 10;
+ description = "Service has full access to home directories";
+
+ r = parse_boolean(info->protect_home);
+ if (r < 0) {
+ if (streq_ptr(info->protect_home, "read-only")) {
+ badness = 5;
+ description = "Service has read-only access to home directories";
+ } else if (streq_ptr(info->protect_home, "tmpfs")) {
+ badness = 1;
+ description = "Service has access to fake empty home directories";
+ }
+ } else if (r > 0) {
+ badness = 0;
+ description = "Service has no access to home directories";
+ }
+
+ copy = strdup(description);
+ if (!copy)
+ return log_oom();
+
+ *ret_badness = badness;
+ *ret_description = copy;
+
+ return 0;
+}
+
+static int assess_protect_system(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ const char *description;
+ uint64_t badness;
+ char *copy;
+ int r;
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ badness = 10;
+ description = "Service has full access to the OS file hierarchy";
+
+ r = parse_boolean(info->protect_system);
+ if (r < 0) {
+ if (streq_ptr(info->protect_system, "full")) {
+ badness = 3;
+ description = "Service has very limited write access to the OS file hierarchy";
+ } else if (streq_ptr(info->protect_system, "strict")) {
+ badness = 0;
+ description = "Service has strict read-only access to the OS file hierarchy";
+ }
+ } else if (r > 0) {
+ badness = 5;
+ description = "Service has limited write access to the OS file hierarchy";
+ }
+
+ copy = strdup(description);
+ if (!copy)
+ return log_oom();
+
+ *ret_badness = badness;
+ *ret_description = copy;
+
+ return 0;
+}
+
+static int assess_root_directory(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ *ret_badness =
+ empty_or_root(info->root_directory) &&
+ empty_or_root(info->root_image);
+ *ret_description = NULL;
+
+ return 0;
+}
+
+static int assess_capability_bounding_set(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ *ret_badness = !!(info->capability_bounding_set & a->parameter);
+ *ret_description = NULL;
+
+ return 0;
+}
+
+static int assess_umask(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ char *copy = NULL;
+ const char *d;
+ uint64_t b;
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ if (!FLAGS_SET(info->_umask, 0002)) {
+ d = "Files created by service are world-writable by default";
+ b = 10;
+ } else if (!FLAGS_SET(info->_umask, 0004)) {
+ d = "Files created by service are world-readable by default";
+ b = 5;
+ } else if (!FLAGS_SET(info->_umask, 0020)) {
+ d = "Files created by service are group-writable by default";
+ b = 2;
+ } else if (!FLAGS_SET(info->_umask, 0040)) {
+ d = "Files created by service are group-readable by default";
+ b = 1;
+ } else {
+ d = "Files created by service are accessible only by service's own user by default";
+ b = 0;
+ }
+
+ copy = strdup(d);
+ if (!copy)
+ return log_oom();
+
+ *ret_badness = b;
+ *ret_description = copy;
+
+ return 0;
+}
+
+static int assess_keyring_mode(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ *ret_badness = !streq_ptr(info->keyring_mode, "private");
+ *ret_description = NULL;
+
+ return 0;
+}
+
+static int assess_protect_proc(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ if (streq_ptr(info->protect_proc, "noaccess"))
+ *ret_badness = 1;
+ else if (STRPTR_IN_SET(info->protect_proc, "invisible", "ptraceable"))
+ *ret_badness = 0;
+ else
+ *ret_badness = 3;
+
+ *ret_description = NULL;
+
+ return 0;
+}
+
+static int assess_proc_subset(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ *ret_badness = !streq_ptr(info->proc_subset, "pid");
+ *ret_description = NULL;
+
+ return 0;
+}
+
+static int assess_notify_access(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ *ret_badness = streq_ptr(info->notify_access, "all");
+ *ret_description = NULL;
+
+ return 0;
+}
+
+static int assess_remove_ipc(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ if (security_info_runs_privileged(info))
+ *ret_badness = UINT64_MAX;
+ else
+ *ret_badness = !info->remove_ipc;
+
+ *ret_description = NULL;
+ return 0;
+}
+
+static int assess_supplementary_groups(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ if (security_info_runs_privileged(info))
+ *ret_badness = UINT64_MAX;
+ else
+ *ret_badness = !strv_isempty(info->supplementary_groups);
+
+ *ret_description = NULL;
+ return 0;
+}
+
+static int assess_restrict_namespaces(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ *ret_badness = !!(info->restrict_namespaces & a->parameter);
+ *ret_description = NULL;
+
+ return 0;
+}
+
+#if HAVE_SECCOMP
+
+static int assess_system_call_architectures(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ char *d;
+ uint64_t b;
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ if (set_isempty(info->system_call_architectures)) {
+ b = 10;
+ d = strdup("Service may execute system calls with all ABIs");
+ } else if (set_contains(info->system_call_architectures, "native") &&
+ set_size(info->system_call_architectures) == 1) {
+ b = 0;
+ d = strdup("Service may execute system calls only with native ABI");
+ } else {
+ b = 8;
+ d = strdup("Service may execute system calls with multiple ABIs");
+ }
+
+ if (!d)
+ return log_oom();
+
+ *ret_badness = b;
+ *ret_description = d;
+
+ return 0;
+}
+
+static bool syscall_names_in_filter(Set *s, bool allow_list, const SyscallFilterSet *f, const char **ret_offending_syscall) {
+ const char *syscall;
+
+ NULSTR_FOREACH(syscall, f->value) {
+ if (syscall[0] == '@') {
+ const SyscallFilterSet *g;
+
+ assert_se(g = syscall_filter_set_find(syscall));
+ if (syscall_names_in_filter(s, allow_list, g, ret_offending_syscall))
+ return true; /* bad! */
+
+ continue;
+ }
+
+ /* Let's see if the system call actually exists on this platform, before complaining */
+ if (seccomp_syscall_resolve_name(syscall) < 0)
+ continue;
+
+ if (set_contains(s, syscall) == allow_list) {
+ log_debug("Offending syscall filter item: %s", syscall);
+ if (ret_offending_syscall)
+ *ret_offending_syscall = syscall;
+ return true; /* bad! */
+ }
+ }
+
+ *ret_offending_syscall = NULL;
+ return false;
+}
+
+static int assess_system_call_filter(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ assert(a);
+ assert(info);
+ assert(ret_badness);
+ assert(ret_description);
+
+ assert(a->parameter < _SYSCALL_FILTER_SET_MAX);
+ const SyscallFilterSet *f = syscall_filter_sets + a->parameter;
+
+ _cleanup_free_ char *d = NULL;
+ uint64_t b;
+ int r;
+
+ if (!info->system_call_filter_allow_list && set_isempty(info->system_call_filter)) {
+ r = free_and_strdup(&d, "Service does not filter system calls");
+ b = 10;
+ } else {
+ bool bad;
+ const char *offender = NULL;
+
+ log_debug("Analyzing system call filter, checking against: %s", f->name);
+ bad = syscall_names_in_filter(info->system_call_filter, info->system_call_filter_allow_list, f, &offender);
+ log_debug("Result: %s", bad ? "bad" : "good");
+
+ if (info->system_call_filter_allow_list) {
+ if (bad) {
+ r = asprintf(&d, "System call allow list defined for service, and %s is included "
+ "(e.g. %s is allowed)",
+ f->name, offender);
+ b = 9;
+ } else {
+ r = asprintf(&d, "System call allow list defined for service, and %s is not included",
+ f->name);
+ b = 0;
+ }
+ } else {
+ if (bad) {
+ r = asprintf(&d, "System call deny list defined for service, and %s is not included "
+ "(e.g. %s is allowed)",
+ f->name, offender);
+ b = 10;
+ } else {
+ r = asprintf(&d, "System call deny list defined for service, and %s is included",
+ f->name);
+ b = 0;
+ }
+ }
+ }
+ if (r < 0)
+ return log_oom();
+
+ *ret_badness = b;
+ *ret_description = TAKE_PTR(d);
+
+ return 0;
+}
+
+#endif
+
+static int assess_ip_address_allow(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ char *d = NULL;
+ uint64_t b;
+
+ assert(info);
+ assert(ret_badness);
+ assert(ret_description);
+
+ if (info->ip_filters_custom_ingress || info->ip_filters_custom_egress) {
+ d = strdup("Service defines custom ingress/egress IP filters with BPF programs");
+ b = 0;
+ } else if (!info->ip_address_deny_all) {
+ d = strdup("Service does not define an IP address allow list");
+ b = 10;
+ } else if (info->ip_address_allow_other) {
+ d = strdup("Service defines IP address allow list with non-localhost entries");
+ b = 5;
+ } else if (info->ip_address_allow_localhost) {
+ d = strdup("Service defines IP address allow list with only localhost entries");
+ b = 2;
+ } else {
+ d = strdup("Service blocks all IP address ranges");
+ b = 0;
+ }
+
+ if (!d)
+ return log_oom();
+
+ *ret_badness = b;
+ *ret_description = d;
+
+ return 0;
+}
+
+static int assess_device_allow(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ char *d = NULL;
+ uint64_t b;
+
+ assert(info);
+ assert(ret_badness);
+ assert(ret_description);
+
+ if (STRPTR_IN_SET(info->device_policy, "strict", "closed")) {
+
+ if (!strv_isempty(info->device_allow)) {
+ _cleanup_free_ char *join = NULL;
+
+ join = strv_join(info->device_allow, " ");
+ if (!join)
+ return log_oom();
+
+ d = strjoin("Service has a device ACL with some special devices: ", join);
+ b = 5;
+ } else {
+ d = strdup("Service has a minimal device ACL");
+ b = 0;
+ }
+ } else {
+ d = strdup("Service has no device ACL");
+ b = 10;
+ }
+
+ if (!d)
+ return log_oom();
+
+ *ret_badness = b;
+ *ret_description = d;
+
+ return 0;
+}
+
+static int assess_ambient_capabilities(
+ const struct security_assessor *a,
+ const SecurityInfo *info,
+ const void *data,
+ uint64_t *ret_badness,
+ char **ret_description) {
+
+ assert(ret_badness);
+ assert(ret_description);
+
+ *ret_badness = info->ambient_capabilities != 0;
+ *ret_description = NULL;
+
+ return 0;
+}
+
+static const struct security_assessor security_assessor_table[] = {
+ {
+ .id = "User=/DynamicUser=",
+ .json_field = "UserOrDynamicUser",
+ .description_bad = "Service runs as root user",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#User=",
+ .weight = 2000,
+ .range = 10,
+ .assess = assess_user,
+ },
+ {
+ .id = "SupplementaryGroups=",
+ .json_field = "SupplementaryGroups",
+ .description_good = "Service has no supplementary groups",
+ .description_bad = "Service runs with supplementary groups",
+ .description_na = "Service runs as root, option does not matter",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SupplementaryGroups=",
+ .weight = 200,
+ .range = 1,
+ .assess = assess_supplementary_groups,
+ },
+ {
+ .id = "PrivateDevices=",
+ .json_field = "PrivateDevices",
+ .description_good = "Service has no access to hardware devices",
+ .description_bad = "Service potentially has access to hardware devices",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateDevices=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, private_devices),
+ },
+ {
+ .id = "PrivateMounts=",
+ .json_field = "PrivateMounts",
+ .description_good = "Service cannot install system mounts",
+ .description_bad = "Service may install system mounts",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateMounts=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, private_mounts),
+ },
+ {
+ .id = "PrivateNetwork=",
+ .json_field = "PrivateNetwork",
+ .description_good = "Service has no access to the host's network",
+ .description_bad = "Service has access to the host's network",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateNetwork=",
+ .weight = 2500,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, private_network),
+ },
+ {
+ .id = "PrivateTmp=",
+ .json_field = "PrivateTmp",
+ .description_good = "Service has no access to other software's temporary files",
+ .description_bad = "Service has access to other software's temporary files",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateTmp=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, private_tmp),
+ .default_dependencies_only = true,
+ },
+ {
+ .id = "PrivateUsers=",
+ .json_field = "PrivateUsers",
+ .description_good = "Service does not have access to other users",
+ .description_bad = "Service has access to other users",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateUsers=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, private_users),
+ },
+ {
+ .id = "ProtectControlGroups=",
+ .json_field = "ProtectControlGroups",
+ .description_good = "Service cannot modify the control group file system",
+ .description_bad = "Service may modify the control group file system",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectControlGroups=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, protect_control_groups),
+ },
+ {
+ .id = "ProtectKernelModules=",
+ .json_field = "ProtectKernelModules",
+ .description_good = "Service cannot load or read kernel modules",
+ .description_bad = "Service may load or read kernel modules",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectKernelModules=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, protect_kernel_modules),
+ },
+ {
+ .id = "ProtectKernelTunables=",
+ .json_field = "ProtectKernelTunables",
+ .description_good = "Service cannot alter kernel tunables (/proc/sys, …)",
+ .description_bad = "Service may alter kernel tunables",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectKernelTunables=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, protect_kernel_tunables),
+ },
+ {
+ .id = "ProtectKernelLogs=",
+ .json_field = "ProtectKernelLogs",
+ .description_good = "Service cannot read from or write to the kernel log ring buffer",
+ .description_bad = "Service may read from or write to the kernel log ring buffer",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectKernelLogs=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, protect_kernel_logs),
+ },
+ {
+ .id = "ProtectClock=",
+ .json_field = "ProtectClock",
+ .description_good = "Service cannot write to the hardware clock or system clock",
+ .description_bad = "Service may write to the hardware clock or system clock",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectClock=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, protect_clock),
+ },
+ {
+ .id = "ProtectHome=",
+ .json_field = "ProtectHome",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectHome=",
+ .weight = 1000,
+ .range = 10,
+ .assess = assess_protect_home,
+ .default_dependencies_only = true,
+ },
+ {
+ .id = "ProtectHostname=",
+ .json_field = "ProtectHostname",
+ .description_good = "Service cannot change system host/domainname",
+ .description_bad = "Service may change system host/domainname",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectHostname=",
+ .weight = 50,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, protect_hostname),
+ },
+ {
+ .id = "ProtectSystem=",
+ .json_field = "ProtectSystem",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectSystem=",
+ .weight = 1000,
+ .range = 10,
+ .assess = assess_protect_system,
+ .default_dependencies_only = true,
+ },
+ {
+ .id = "RootDirectory=/RootImage=",
+ .json_field = "RootDirectoryOrRootImage",
+ .description_good = "Service has its own root directory/image",
+ .description_bad = "Service runs within the host's root directory",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RootDirectory=",
+ .weight = 200,
+ .range = 1,
+ .assess = assess_root_directory,
+ .default_dependencies_only = true,
+ },
+ {
+ .id = "LockPersonality=",
+ .json_field = "LockPersonality",
+ .description_good = "Service cannot change ABI personality",
+ .description_bad = "Service may change ABI personality",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#LockPersonality=",
+ .weight = 100,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, lock_personality),
+ },
+ {
+ .id = "MemoryDenyWriteExecute=",
+ .json_field = "MemoryDenyWriteExecute",
+ .description_good = "Service cannot create writable executable memory mappings",
+ .description_bad = "Service may create writable executable memory mappings",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#MemoryDenyWriteExecute=",
+ .weight = 100,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, memory_deny_write_execute),
+ },
+ {
+ .id = "NoNewPrivileges=",
+ .json_field = "NoNewPrivileges",
+ .description_good = "Service processes cannot acquire new privileges",
+ .description_bad = "Service processes may acquire new privileges",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#NoNewPrivileges=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, no_new_privileges),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_SYS_ADMIN",
+ .json_field = "CapabilityBoundingSet_CAP_SYS_ADMIN",
+ .description_good = "Service has no administrator privileges",
+ .description_bad = "Service has administrator privileges",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 1500,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = UINT64_C(1) << CAP_SYS_ADMIN,
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_SET(UID|GID|PCAP)",
+ .json_field = "CapabilityBoundingSet_CAP_SET_UID_GID_PCAP",
+ .description_good = "Service cannot change UID/GID identities/capabilities",
+ .description_bad = "Service may change UID/GID identities/capabilities",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 1500,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_SETUID)|
+ (UINT64_C(1) << CAP_SETGID)|
+ (UINT64_C(1) << CAP_SETPCAP),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_SYS_PTRACE",
+ .json_field = "CapabilityBoundingSet_CAP_SYS_PTRACE",
+ .description_good = "Service has no ptrace() debugging abilities",
+ .description_bad = "Service has ptrace() debugging abilities",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 1500,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_SYS_PTRACE),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_SYS_TIME",
+ .json_field = "CapabilityBoundingSet_CAP_SYS_TIME",
+ .description_good = "Service processes cannot change the system clock",
+ .description_bad = "Service processes may change the system clock",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = UINT64_C(1) << CAP_SYS_TIME,
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_NET_ADMIN",
+ .json_field = "CapabilityBoundingSet_CAP_NET_ADMIN",
+ .description_good = "Service has no network configuration privileges",
+ .description_bad = "Service has network configuration privileges",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_NET_ADMIN),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_SYS_RAWIO",
+ .json_field = "CapabilityBoundingSet_CAP_SYS_RAWIO",
+ .description_good = "Service has no raw I/O access",
+ .description_bad = "Service has raw I/O access",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_SYS_RAWIO),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_SYS_MODULE",
+ .json_field = "CapabilityBoundingSet_CAP_SYS_MODULE",
+ .description_good = "Service cannot load kernel modules",
+ .description_bad = "Service may load kernel modules",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_SYS_MODULE),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_AUDIT_*",
+ .json_field = "CapabilityBoundingSet_CAP_AUDIT",
+ .description_good = "Service has no audit subsystem access",
+ .description_bad = "Service has audit subsystem access",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 500,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_AUDIT_CONTROL) |
+ (UINT64_C(1) << CAP_AUDIT_READ) |
+ (UINT64_C(1) << CAP_AUDIT_WRITE),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_SYSLOG",
+ .json_field = "CapabilityBoundingSet_CAP_SYSLOG",
+ .description_good = "Service has no access to kernel logging",
+ .description_bad = "Service has access to kernel logging",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 500,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_SYSLOG),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_SYS_(NICE|RESOURCE)",
+ .json_field = "CapabilityBoundingSet_CAP_SYS_NICE_RESOURCE",
+ .description_good = "Service has no privileges to change resource use parameters",
+ .description_bad = "Service has privileges to change resource use parameters",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 500,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_SYS_NICE) |
+ (UINT64_C(1) << CAP_SYS_RESOURCE),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_MKNOD",
+ .json_field = "CapabilityBoundingSet_CAP_MKNOD",
+ .description_good = "Service cannot create device nodes",
+ .description_bad = "Service may create device nodes",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 500,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_MKNOD),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_(CHOWN|FSETID|SETFCAP)",
+ .json_field = "CapabilityBoundingSet_CAP_CHOWN_FSETID_SETFCAP",
+ .description_good = "Service cannot change file ownership/access mode/capabilities",
+ .description_bad = "Service may change file ownership/access mode/capabilities unrestricted",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_CHOWN) |
+ (UINT64_C(1) << CAP_FSETID) |
+ (UINT64_C(1) << CAP_SETFCAP),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_(DAC_*|FOWNER|IPC_OWNER)",
+ .json_field = "CapabilityBoundingSet_CAP_DAC_FOWNER_IPC_OWNER",
+ .description_good = "Service cannot override UNIX file/IPC permission checks",
+ .description_bad = "Service may override UNIX file/IPC permission checks",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_DAC_OVERRIDE) |
+ (UINT64_C(1) << CAP_DAC_READ_SEARCH) |
+ (UINT64_C(1) << CAP_FOWNER) |
+ (UINT64_C(1) << CAP_IPC_OWNER),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_KILL",
+ .json_field = "CapabilityBoundingSet_CAP_KILL",
+ .description_good = "Service cannot send UNIX signals to arbitrary processes",
+ .description_bad = "Service may send UNIX signals to arbitrary processes",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 500,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_KILL),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_NET_(BIND_SERVICE|BROADCAST|RAW)",
+ .json_field = "CapabilityBoundingSet_CAP_NET_BIND_SERVICE_BROADCAST_RAW)",
+ .description_good = "Service has no elevated networking privileges",
+ .description_bad = "Service has elevated networking privileges",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 500,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_NET_BIND_SERVICE) |
+ (UINT64_C(1) << CAP_NET_BROADCAST) |
+ (UINT64_C(1) << CAP_NET_RAW),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_SYS_BOOT",
+ .json_field = "CapabilityBoundingSet_CAP_SYS_BOOT",
+ .description_good = "Service cannot issue reboot()",
+ .description_bad = "Service may issue reboot()",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 100,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_SYS_BOOT),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_MAC_*",
+ .json_field = "CapabilityBoundingSet_CAP_MAC",
+ .description_good = "Service cannot adjust SMACK MAC",
+ .description_bad = "Service may adjust SMACK MAC",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 100,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_MAC_ADMIN)|
+ (UINT64_C(1) << CAP_MAC_OVERRIDE),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_LINUX_IMMUTABLE",
+ .json_field = "CapabilityBoundingSet_CAP_LINUX_IMMUTABLE",
+ .description_good = "Service cannot mark files immutable",
+ .description_bad = "Service may mark files immutable",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 75,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_LINUX_IMMUTABLE),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_IPC_LOCK",
+ .json_field = "CapabilityBoundingSet_CAP_IPC_LOCK",
+ .description_good = "Service cannot lock memory into RAM",
+ .description_bad = "Service may lock memory into RAM",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 50,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_IPC_LOCK),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_SYS_CHROOT",
+ .json_field = "CapabilityBoundingSet_CAP_SYS_CHROOT",
+ .description_good = "Service cannot issue chroot()",
+ .description_bad = "Service may issue chroot()",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 50,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_SYS_CHROOT),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_BLOCK_SUSPEND",
+ .json_field = "CapabilityBoundingSet_CAP_BLOCK_SUSPEND",
+ .description_good = "Service cannot establish wake locks",
+ .description_bad = "Service may establish wake locks",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 25,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_BLOCK_SUSPEND),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_WAKE_ALARM",
+ .json_field = "CapabilityBoundingSet_CAP_WAKE_ALARM",
+ .description_good = "Service cannot program timers that wake up the system",
+ .description_bad = "Service may program timers that wake up the system",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 25,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_WAKE_ALARM),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_LEASE",
+ .json_field = "CapabilityBoundingSet_CAP_LEASE",
+ .description_good = "Service cannot create file leases",
+ .description_bad = "Service may create file leases",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 25,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_LEASE),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_SYS_TTY_CONFIG",
+ .json_field = "CapabilityBoundingSet_CAP_SYS_TTY_CONFIG",
+ .description_good = "Service cannot issue vhangup()",
+ .description_bad = "Service may issue vhangup()",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 25,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_SYS_TTY_CONFIG),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_SYS_PACCT",
+ .json_field = "CapabilityBoundingSet_CAP_SYS_PACCT",
+ .description_good = "Service cannot use acct()",
+ .description_bad = "Service may use acct()",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 25,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_SYS_PACCT),
+ },
+ {
+ .id = "CapabilityBoundingSet=~CAP_BPF",
+ .json_field = "CapabilityBoundingSet_CAP_BPF",
+ .description_good = "Service may load BPF programs",
+ .description_bad = "Service may not load BPF programs",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=",
+ .weight = 25,
+ .range = 1,
+ .assess = assess_capability_bounding_set,
+ .parameter = (UINT64_C(1) << CAP_BPF),
+ },
+ {
+ .id = "UMask=",
+ .json_field = "UMask",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#UMask=",
+ .weight = 100,
+ .range = 10,
+ .assess = assess_umask,
+ },
+ {
+ .id = "KeyringMode=",
+ .json_field = "KeyringMode",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#KeyringMode=",
+ .description_good = "Service doesn't share key material with other services",
+ .description_bad = "Service shares key material with other service",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_keyring_mode,
+ },
+ {
+ .id = "ProtectProc=",
+ .json_field = "ProtectProc",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectProc=",
+ .description_good = "Service has restricted access to process tree (/proc hidepid=)",
+ .description_bad = "Service has full access to process tree (/proc hidepid=)",
+ .weight = 1000,
+ .range = 3,
+ .assess = assess_protect_proc,
+ },
+ {
+ .id = "ProcSubset=",
+ .json_field = "ProcSubset",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProcSubset=",
+ .description_good = "Service has no access to non-process /proc files (/proc subset=)",
+ .description_bad = "Service has full access to non-process /proc files (/proc subset=)",
+ .weight = 10,
+ .range = 1,
+ .assess = assess_proc_subset,
+ },
+ {
+ .id = "NotifyAccess=",
+ .json_field = "NotifyAccess",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#NotifyAccess=",
+ .description_good = "Service child processes cannot alter service state",
+ .description_bad = "Service child processes may alter service state",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_notify_access,
+ },
+ {
+ .id = "RemoveIPC=",
+ .json_field = "RemoveIPC",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RemoveIPC=",
+ .description_good = "Service user cannot leave SysV IPC objects around",
+ .description_bad = "Service user may leave SysV IPC objects around",
+ .description_na = "Service runs as root, option does not apply",
+ .weight = 100,
+ .range = 1,
+ .assess = assess_remove_ipc,
+ .offset = offsetof(SecurityInfo, remove_ipc),
+ },
+ {
+ .id = "Delegate=",
+ .json_field = "Delegate",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#Delegate=",
+ .description_good = "Service does not maintain its own delegated control group subtree",
+ .description_bad = "Service maintains its own delegated control group subtree",
+ .weight = 100,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, delegate),
+ .parameter = true, /* invert! */
+ },
+ {
+ .id = "RestrictRealtime=",
+ .json_field = "RestrictRealtime",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictRealtime=",
+ .description_good = "Service realtime scheduling access is restricted",
+ .description_bad = "Service may acquire realtime scheduling",
+ .weight = 500,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, restrict_realtime),
+ },
+ {
+ .id = "RestrictSUIDSGID=",
+ .json_field = "RestrictSUIDSGID",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictSUIDSGID=",
+ .description_good = "SUID/SGID file creation by service is restricted",
+ .description_bad = "Service may create SUID/SGID files",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, restrict_suid_sgid),
+ },
+ {
+ .id = "RestrictNamespaces=~user",
+ .json_field = "RestrictNamespaces_user",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=",
+ .description_good = "Service cannot create user namespaces",
+ .description_bad = "Service may create user namespaces",
+ .weight = 1500,
+ .range = 1,
+ .assess = assess_restrict_namespaces,
+ .parameter = CLONE_NEWUSER,
+ },
+ {
+ .id = "RestrictNamespaces=~mnt",
+ .json_field = "RestrictNamespaces_mnt",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=",
+ .description_good = "Service cannot create file system namespaces",
+ .description_bad = "Service may create file system namespaces",
+ .weight = 500,
+ .range = 1,
+ .assess = assess_restrict_namespaces,
+ .parameter = CLONE_NEWNS,
+ },
+ {
+ .id = "RestrictNamespaces=~ipc",
+ .json_field = "RestrictNamespaces_ipc",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=",
+ .description_good = "Service cannot create IPC namespaces",
+ .description_bad = "Service may create IPC namespaces",
+ .weight = 500,
+ .range = 1,
+ .assess = assess_restrict_namespaces,
+ .parameter = CLONE_NEWIPC,
+ },
+ {
+ .id = "RestrictNamespaces=~pid",
+ .json_field = "RestrictNamespaces_pid",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=",
+ .description_good = "Service cannot create process namespaces",
+ .description_bad = "Service may create process namespaces",
+ .weight = 500,
+ .range = 1,
+ .assess = assess_restrict_namespaces,
+ .parameter = CLONE_NEWPID,
+ },
+ {
+ .id = "RestrictNamespaces=~cgroup",
+ .json_field = "RestrictNamespaces_cgroup",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=",
+ .description_good = "Service cannot create cgroup namespaces",
+ .description_bad = "Service may create cgroup namespaces",
+ .weight = 500,
+ .range = 1,
+ .assess = assess_restrict_namespaces,
+ .parameter = CLONE_NEWCGROUP,
+ },
+ {
+ .id = "RestrictNamespaces=~net",
+ .json_field = "RestrictNamespaces_net",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=",
+ .description_good = "Service cannot create network namespaces",
+ .description_bad = "Service may create network namespaces",
+ .weight = 500,
+ .range = 1,
+ .assess = assess_restrict_namespaces,
+ .parameter = CLONE_NEWNET,
+ },
+ {
+ .id = "RestrictNamespaces=~uts",
+ .json_field = "RestrictNamespaces_uts",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=",
+ .description_good = "Service cannot create hostname namespaces",
+ .description_bad = "Service may create hostname namespaces",
+ .weight = 100,
+ .range = 1,
+ .assess = assess_restrict_namespaces,
+ .parameter = CLONE_NEWUTS,
+ },
+ {
+ .id = "RestrictAddressFamilies=~AF_(INET|INET6)",
+ .json_field = "RestrictAddressFamilies_AF_INET_INET6",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=",
+ .description_good = "Service cannot allocate Internet sockets",
+ .description_bad = "Service may allocate Internet sockets",
+ .weight = 1500,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, restrict_address_family_inet),
+ },
+ {
+ .id = "RestrictAddressFamilies=~AF_UNIX",
+ .json_field = "RestrictAddressFamilies_AF_UNIX",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=",
+ .description_good = "Service cannot allocate local sockets",
+ .description_bad = "Service may allocate local sockets",
+ .weight = 25,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, restrict_address_family_unix),
+ },
+ {
+ .id = "RestrictAddressFamilies=~AF_NETLINK",
+ .json_field = "RestrictAddressFamilies_AF_NETLINK",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=",
+ .description_good = "Service cannot allocate netlink sockets",
+ .description_bad = "Service may allocate netlink sockets",
+ .weight = 200,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, restrict_address_family_netlink),
+ },
+ {
+ .id = "RestrictAddressFamilies=~AF_PACKET",
+ .json_field = "RestrictAddressFamilies_AF_PACKET",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=",
+ .description_good = "Service cannot allocate packet sockets",
+ .description_bad = "Service may allocate packet sockets",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, restrict_address_family_packet),
+ },
+ {
+ .id = "RestrictAddressFamilies=~…",
+ .json_field = "RestrictAddressFamilies_OTHER",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=",
+ .description_good = "Service cannot allocate exotic sockets",
+ .description_bad = "Service may allocate exotic sockets",
+ .weight = 1250,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(SecurityInfo, restrict_address_family_other),
+ },
+#if HAVE_SECCOMP
+ {
+ .id = "SystemCallArchitectures=",
+ .json_field = "SystemCallArchitectures",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallArchitectures=",
+ .weight = 1000,
+ .range = 10,
+ .assess = assess_system_call_architectures,
+ },
+ {
+ .id = "SystemCallFilter=~@swap",
+ .json_field = "SystemCallFilter_swap",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=",
+ .weight = 1000,
+ .range = 10,
+ .assess = assess_system_call_filter,
+ .parameter = SYSCALL_FILTER_SET_SWAP,
+ },
+ {
+ .id = "SystemCallFilter=~@obsolete",
+ .json_field = "SystemCallFilter_obsolete",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=",
+ .weight = 250,
+ .range = 10,
+ .assess = assess_system_call_filter,
+ .parameter = SYSCALL_FILTER_SET_OBSOLETE,
+ },
+ {
+ .id = "SystemCallFilter=~@clock",
+ .json_field = "SystemCallFilter_clock",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=",
+ .weight = 1000,
+ .range = 10,
+ .assess = assess_system_call_filter,
+ .parameter = SYSCALL_FILTER_SET_CLOCK,
+ },
+ {
+ .id = "SystemCallFilter=~@cpu-emulation",
+ .json_field = "SystemCallFilter_cpu_emulation",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=",
+ .weight = 250,
+ .range = 10,
+ .assess = assess_system_call_filter,
+ .parameter = SYSCALL_FILTER_SET_CPU_EMULATION,
+ },
+ {
+ .id = "SystemCallFilter=~@debug",
+ .json_field = "SystemCallFilter_debug",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=",
+ .weight = 1000,
+ .range = 10,
+ .assess = assess_system_call_filter,
+ .parameter = SYSCALL_FILTER_SET_DEBUG,
+ },
+ {
+ .id = "SystemCallFilter=~@mount",
+ .json_field = "SystemCallFilter_mount",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=",
+ .weight = 1000,
+ .range = 10,
+ .assess = assess_system_call_filter,
+ .parameter = SYSCALL_FILTER_SET_MOUNT,
+ },
+ {
+ .id = "SystemCallFilter=~@module",
+ .json_field = "SystemCallFilter_module",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=",
+ .weight = 1000,
+ .range = 10,
+ .assess = assess_system_call_filter,
+ .parameter = SYSCALL_FILTER_SET_MODULE,
+ },
+ {
+ .id = "SystemCallFilter=~@raw-io",
+ .json_field = "SystemCallFilter_raw_io",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=",
+ .weight = 1000,
+ .range = 10,
+ .assess = assess_system_call_filter,
+ .parameter = SYSCALL_FILTER_SET_RAW_IO,
+ },
+ {
+ .id = "SystemCallFilter=~@reboot",
+ .json_field = "SystemCallFilter_reboot",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=",
+ .weight = 1000,
+ .range = 10,
+ .assess = assess_system_call_filter,
+ .parameter = SYSCALL_FILTER_SET_REBOOT,
+ },
+ {
+ .id = "SystemCallFilter=~@privileged",
+ .json_field = "SystemCallFilter_privileged",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=",
+ .weight = 700,
+ .range = 10,
+ .assess = assess_system_call_filter,
+ .parameter = SYSCALL_FILTER_SET_PRIVILEGED,
+ },
+ {
+ .id = "SystemCallFilter=~@resources",
+ .json_field = "SystemCallFilter_resources",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=",
+ .weight = 700,
+ .range = 10,
+ .assess = assess_system_call_filter,
+ .parameter = SYSCALL_FILTER_SET_RESOURCES,
+ },
+#endif
+ {
+ .id = "IPAddressDeny=",
+ .json_field = "IPAddressDeny",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#IPAddressDeny=",
+ .weight = 1000,
+ .range = 10,
+ .assess = assess_ip_address_allow,
+ },
+ {
+ .id = "DeviceAllow=",
+ .json_field = "DeviceAllow",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#DeviceAllow=",
+ .weight = 1000,
+ .range = 10,
+ .assess = assess_device_allow,
+ },
+ {
+ .id = "AmbientCapabilities=",
+ .json_field = "AmbientCapabilities",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#AmbientCapabilities=",
+ .description_good = "Service process does not receive ambient capabilities",
+ .description_bad = "Service process receives ambient capabilities",
+ .weight = 500,
+ .range = 1,
+ .assess = assess_ambient_capabilities,
+ },
+};
+
+static JsonVariant* security_assessor_find_in_policy(const struct security_assessor *a, JsonVariant *policy, const char *name) {
+ JsonVariant *item;
+ assert(a);
+
+ if (!policy)
+ return NULL;
+ if (!json_variant_is_object(policy)) {
+ log_debug("Specified policy is not a JSON object, ignoring.");
+ return NULL;
+ }
+
+ item = json_variant_by_key(policy, a->json_field);
+ if (!item)
+ return NULL;
+ if (!json_variant_is_object(item)) {
+ log_debug("Item for '%s' in policy JSON object is not an object, ignoring.", a->id);
+ return NULL;
+ }
+
+ return name ? json_variant_by_key(item, name) : item;
+}
+
+static uint64_t access_weight(const struct security_assessor *a, JsonVariant *policy) {
+ JsonVariant *val;
+
+ assert(a);
+
+ val = security_assessor_find_in_policy(a, policy, "weight");
+ if (val) {
+ if (json_variant_is_unsigned(val))
+ return json_variant_unsigned(val);
+ log_debug("JSON field 'weight' of policy for %s is not an unsigned integer, ignoring.", a->id);
+ }
+
+ return a->weight;
+}
+
+static uint64_t access_range(const struct security_assessor *a, JsonVariant *policy) {
+ JsonVariant *val;
+
+ assert(a);
+
+ val = security_assessor_find_in_policy(a, policy, "range");
+ if (val) {
+ if (json_variant_is_unsigned(val))
+ return json_variant_unsigned(val);
+ log_debug("JSON field 'range' of policy for %s is not an unsigned integer, ignoring.", a->id);
+ }
+
+ return a->range;
+}
+
+static const char *access_description_na(const struct security_assessor *a, JsonVariant *policy) {
+ JsonVariant *val;
+
+ assert(a);
+
+ val = security_assessor_find_in_policy(a, policy, "description_na");
+ if (val) {
+ if (json_variant_is_string(val))
+ return json_variant_string(val);
+ log_debug("JSON field 'description_na' of policy for %s is not a string, ignoring.", a->id);
+ }
+
+ return a->description_na;
+}
+
+static const char *access_description_good(const struct security_assessor *a, JsonVariant *policy) {
+ JsonVariant *val;
+
+ assert(a);
+
+ val = security_assessor_find_in_policy(a, policy, "description_good");
+ if (val) {
+ if (json_variant_is_string(val))
+ return json_variant_string(val);
+ log_debug("JSON field 'description_good' of policy for %s is not a string, ignoring.", a->id);
+ }
+
+ return a->description_good;
+}
+
+static const char *access_description_bad(const struct security_assessor *a, JsonVariant *policy) {
+ JsonVariant *val;
+
+ assert(a);
+
+ val = security_assessor_find_in_policy(a, policy, "description_bad");
+ if (val) {
+ if (json_variant_is_string(val))
+ return json_variant_string(val);
+ log_debug("JSON field 'description_bad' of policy for %s is not a string, ignoring.", a->id);
+ }
+
+ return a->description_bad;
+}
+
+static int assess(const SecurityInfo *info,
+ Table *overview_table,
+ AnalyzeSecurityFlags flags,
+ unsigned threshold,
+ JsonVariant *policy,
+ PagerFlags pager_flags,
+ JsonFormatFlags json_format_flags) {
+
+ static const struct {
+ uint64_t exposure;
+ const char *name;
+ const char *color;
+ SpecialGlyph smiley;
+ } badness_table[] = {
+ { 100, "DANGEROUS", ANSI_HIGHLIGHT_RED, SPECIAL_GLYPH_DEPRESSED_SMILEY },
+ { 90, "UNSAFE", ANSI_HIGHLIGHT_RED, SPECIAL_GLYPH_UNHAPPY_SMILEY },
+ { 75, "EXPOSED", ANSI_HIGHLIGHT_YELLOW, SPECIAL_GLYPH_SLIGHTLY_UNHAPPY_SMILEY },
+ { 50, "MEDIUM", NULL, SPECIAL_GLYPH_NEUTRAL_SMILEY },
+ { 10, "OK", ANSI_HIGHLIGHT_GREEN, SPECIAL_GLYPH_SLIGHTLY_HAPPY_SMILEY },
+ { 1, "SAFE", ANSI_HIGHLIGHT_GREEN, SPECIAL_GLYPH_HAPPY_SMILEY },
+ { 0, "PERFECT", ANSI_HIGHLIGHT_GREEN, SPECIAL_GLYPH_ECSTATIC_SMILEY },
+ };
+
+ uint64_t badness_sum = 0, weight_sum = 0, exposure;
+ _cleanup_(table_unrefp) Table *details_table = NULL;
+ size_t i;
+ int r;
+
+ if (!FLAGS_SET(flags, ANALYZE_SECURITY_SHORT)) {
+ details_table = table_new(" ", "name", "json_field", "description", "weight", "badness", "range", "exposure");
+ if (!details_table)
+ return log_oom();
+
+ r = table_set_json_field_name(details_table, 0, "set");
+ if (r < 0)
+ return log_error_errno(r, "Failed to set JSON field name of column 0: %m");
+
+ (void) table_set_sort(details_table, (size_t) 3, (size_t) 1);
+ (void) table_set_reverse(details_table, 3, true);
+
+ if (getenv_bool("SYSTEMD_ANALYZE_DEBUG") <= 0)
+ (void) table_set_display(details_table, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 7);
+ }
+
+ for (i = 0; i < ELEMENTSOF(security_assessor_table); i++) {
+ const struct security_assessor *a = security_assessor_table + i;
+ _cleanup_free_ char *d = NULL;
+ uint64_t badness;
+ void *data;
+ uint64_t weight = access_weight(a, policy);
+ uint64_t range = access_range(a, policy);
+
+ data = (uint8_t *) info + a->offset;
+
+ if (a->default_dependencies_only && !info->default_dependencies) {
+ badness = UINT64_MAX;
+ d = strdup("Service runs in special boot phase, option is not appropriate");
+ if (!d)
+ return log_oom();
+ } else if (weight == 0) {
+ badness = UINT64_MAX;
+ d = strdup("Option excluded by policy, skipping");
+ if (!d)
+ return log_oom();
+ } else {
+ r = a->assess(a, info, data, &badness, &d);
+ if (r < 0)
+ return r;
+ }
+
+ assert(range > 0);
+
+ if (badness != UINT64_MAX) {
+ assert(badness <= range);
+
+ badness_sum += DIV_ROUND_UP(badness * weight, range);
+ weight_sum += weight;
+ }
+
+ if (details_table) {
+ const char *description, *color = NULL;
+ int checkmark;
+
+ if (badness == UINT64_MAX) {
+ checkmark = -1;
+ description = access_description_na(a, policy);
+ color = NULL;
+ } else if (badness == a->range) {
+ checkmark = 0;
+ description = access_description_bad(a, policy);
+ color = ansi_highlight_red();
+ } else if (badness == 0) {
+ checkmark = 1;
+ description = access_description_good(a, policy);
+ color = ansi_highlight_green();
+ } else {
+ checkmark = 0;
+ description = NULL;
+ color = ansi_highlight_red();
+ }
+
+ if (d)
+ description = d;
+
+ if (checkmark < 0) {
+ r = table_add_many(details_table, TABLE_EMPTY);
+ if (r < 0)
+ return table_log_add_error(r);
+ } else {
+ r = table_add_many(details_table,
+ TABLE_BOOLEAN_CHECKMARK, checkmark > 0,
+ TABLE_SET_MINIMUM_WIDTH, 1,
+ TABLE_SET_MAXIMUM_WIDTH, 1,
+ TABLE_SET_ELLIPSIZE_PERCENT, 0,
+ TABLE_SET_COLOR, color);
+ if (r < 0)
+ return table_log_add_error(r);
+ }
+
+ r = table_add_many(details_table,
+ TABLE_STRING, a->id, TABLE_SET_URL, a->url,
+ TABLE_STRING, a->json_field,
+ TABLE_STRING, description,
+ TABLE_UINT64, weight, TABLE_SET_ALIGN_PERCENT, 100,
+ TABLE_UINT64, badness, TABLE_SET_ALIGN_PERCENT, 100,
+ TABLE_UINT64, range, TABLE_SET_ALIGN_PERCENT, 100,
+ TABLE_EMPTY, TABLE_SET_ALIGN_PERCENT, 100);
+ if (r < 0)
+ return table_log_add_error(r);
+ }
+ }
+
+ assert(weight_sum > 0);
+
+ if (details_table) {
+ size_t row;
+
+ for (row = 1; row < table_get_rows(details_table); row++) {
+ char buf[DECIMAL_STR_MAX(uint64_t) + 1 + DECIMAL_STR_MAX(uint64_t) + 1];
+ const uint64_t *weight, *badness, *range;
+ TableCell *cell;
+ uint64_t x;
+
+ assert_se(weight = table_get_at(details_table, row, 4));
+ assert_se(badness = table_get_at(details_table, row, 5));
+ assert_se(range = table_get_at(details_table, row, 6));
+
+ if (*badness == UINT64_MAX || *badness == 0)
+ continue;
+
+ assert_se(cell = table_get_cell(details_table, row, 7));
+
+ x = DIV_ROUND_UP(DIV_ROUND_UP(*badness * *weight * 100U, *range), weight_sum);
+ xsprintf(buf, "%" PRIu64 ".%" PRIu64, x / 10, x % 10);
+
+ r = table_update(details_table, cell, TABLE_STRING, buf);
+ if (r < 0)
+ return log_error_errno(r, "Failed to update cell in table: %m");
+ }
+
+ if (json_format_flags & JSON_FORMAT_OFF) {
+ r = table_hide_column_from_display(details_table, (size_t) 2);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set columns to display: %m");
+ }
+
+ r = table_print_with_pager(details_table, json_format_flags, pager_flags, /* show_header= */true);
+ if (r < 0)
+ return log_error_errno(r, "Failed to output table: %m");
+ }
+
+ exposure = DIV_ROUND_UP(badness_sum * 100U, weight_sum);
+
+ for (i = 0; i < ELEMENTSOF(badness_table); i++)
+ if (exposure >= badness_table[i].exposure)
+ break;
+
+ assert(i < ELEMENTSOF(badness_table));
+
+ if (details_table && (json_format_flags & JSON_FORMAT_OFF)) {
+ _cleanup_free_ char *clickable = NULL;
+ const char *name;
+
+ /* If we shall output the details table, also print the brief summary underneath */
+
+ if (info->fragment_path) {
+ r = terminal_urlify_path(info->fragment_path, info->id, &clickable);
+ if (r < 0)
+ return log_oom();
+
+ name = clickable;
+ } else
+ name = info->id;
+
+ printf("\n%s %sOverall exposure level for %s%s: %s%" PRIu64 ".%" PRIu64 " %s%s %s\n",
+ special_glyph(SPECIAL_GLYPH_ARROW_RIGHT),
+ ansi_highlight(),
+ name,
+ ansi_normal(),
+ colors_enabled() ? strempty(badness_table[i].color) : "",
+ exposure / 10, exposure % 10,
+ badness_table[i].name,
+ ansi_normal(),
+ special_glyph(badness_table[i].smiley));
+ }
+
+ fflush(stdout);
+
+ if (overview_table) {
+ char buf[DECIMAL_STR_MAX(uint64_t) + 1 + DECIMAL_STR_MAX(uint64_t) + 1];
+ _cleanup_free_ char *url = NULL;
+
+ if (info->fragment_path) {
+ r = file_url_from_path(info->fragment_path, &url);
+ if (r < 0)
+ return log_error_errno(r, "Failed to generate URL from path: %m");
+ }
+
+ xsprintf(buf, "%" PRIu64 ".%" PRIu64, exposure / 10, exposure % 10);
+
+ r = table_add_many(overview_table,
+ TABLE_STRING, info->id,
+ TABLE_SET_URL, url,
+ TABLE_STRING, buf,
+ TABLE_SET_ALIGN_PERCENT, 100,
+ TABLE_STRING, badness_table[i].name,
+ TABLE_SET_COLOR, strempty(badness_table[i].color),
+ TABLE_STRING, special_glyph(badness_table[i].smiley));
+ if (r < 0)
+ return table_log_add_error(r);
+ }
+
+ /* Return error when overall exposure level is over threshold */
+ if (exposure > threshold)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int property_read_restrict_namespaces(
+ sd_bus *bus,
+ const char *member,
+ sd_bus_message *m,
+ sd_bus_error *error,
+ void *userdata) {
+
+ SecurityInfo *info = ASSERT_PTR(userdata);
+ int r;
+ uint64_t namespaces;
+
+ assert(bus);
+ assert(member);
+ assert(m);
+
+ r = sd_bus_message_read(m, "t", &namespaces);
+ if (r < 0)
+ return r;
+
+ info->restrict_namespaces = (unsigned long long) namespaces;
+
+ return 0;
+}
+
+static int property_read_umask(
+ sd_bus *bus,
+ const char *member,
+ sd_bus_message *m,
+ sd_bus_error *error,
+ void *userdata) {
+
+ SecurityInfo *info = ASSERT_PTR(userdata);
+ int r;
+ uint32_t umask;
+
+ assert(bus);
+ assert(member);
+ assert(m);
+
+ r = sd_bus_message_read(m, "u", &umask);
+ if (r < 0)
+ return r;
+
+ info->_umask = (mode_t) umask;
+
+ return 0;
+}
+
+static int property_read_restrict_address_families(
+ sd_bus *bus,
+ const char *member,
+ sd_bus_message *m,
+ sd_bus_error *error,
+ void *userdata) {
+
+ SecurityInfo *info = userdata;
+ int allow_list, r;
+
+ assert(bus);
+ assert(member);
+ assert(m);
+
+ r = sd_bus_message_enter_container(m, 'r', "bas");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(m, "b", &allow_list);
+ if (r < 0)
+ return r;
+
+ info->restrict_address_family_inet =
+ info->restrict_address_family_unix =
+ info->restrict_address_family_netlink =
+ info->restrict_address_family_packet =
+ info->restrict_address_family_other = allow_list;
+
+ r = sd_bus_message_enter_container(m, 'a', "s");
+ if (r < 0)
+ return r;
+
+ for (;;) {
+ const char *name;
+
+ r = sd_bus_message_read(m, "s", &name);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ if (STR_IN_SET(name, "AF_INET", "AF_INET6"))
+ info->restrict_address_family_inet = !allow_list;
+ else if (streq(name, "AF_UNIX"))
+ info->restrict_address_family_unix = !allow_list;
+ else if (streq(name, "AF_NETLINK"))
+ info->restrict_address_family_netlink = !allow_list;
+ else if (streq(name, "AF_PACKET"))
+ info->restrict_address_family_packet = !allow_list;
+ else
+ info->restrict_address_family_other = !allow_list;
+ }
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return r;
+
+ return sd_bus_message_exit_container(m);
+}
+
+static int property_read_syscall_archs(
+ sd_bus *bus,
+ const char *member,
+ sd_bus_message *m,
+ sd_bus_error *error,
+ void *userdata) {
+
+ SecurityInfo *info = ASSERT_PTR(userdata);
+ int r;
+
+ assert(bus);
+ assert(member);
+ assert(m);
+
+ r = sd_bus_message_enter_container(m, 'a', "s");
+ if (r < 0)
+ return r;
+
+ for (;;) {
+ const char *name;
+
+ r = sd_bus_message_read(m, "s", &name);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ r = set_put_strdup(&info->system_call_architectures, name);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_message_exit_container(m);
+}
+
+static int property_read_system_call_filter(
+ sd_bus *bus,
+ const char *member,
+ sd_bus_message *m,
+ sd_bus_error *error,
+ void *userdata) {
+
+ SecurityInfo *info = userdata;
+ int allow_list, r;
+
+ assert(bus);
+ assert(member);
+ assert(m);
+
+ r = sd_bus_message_enter_container(m, 'r', "bas");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(m, "b", &allow_list);
+ if (r < 0)
+ return r;
+
+ info->system_call_filter_allow_list = allow_list;
+
+ r = sd_bus_message_enter_container(m, 'a', "s");
+ if (r < 0)
+ return r;
+
+ for (;;) {
+ const char *name;
+
+ r = sd_bus_message_read(m, "s", &name);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ /* ignore errno or action after colon */
+ r = set_put_strndup(&info->system_call_filter, name, strchrnul(name, ':') - name);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return r;
+
+ return sd_bus_message_exit_container(m);
+}
+
+static int property_read_ip_address_allow(
+ sd_bus *bus,
+ const char *member,
+ sd_bus_message *m,
+ sd_bus_error *error,
+ void *userdata) {
+
+ SecurityInfo *info = userdata;
+ bool deny_ipv4 = false, deny_ipv6 = false;
+ int r;
+
+ assert(bus);
+ assert(member);
+ assert(m);
+
+ r = sd_bus_message_enter_container(m, 'a', "(iayu)");
+ if (r < 0)
+ return r;
+
+ for (;;) {
+ const void *data;
+ size_t size;
+ int32_t family;
+ uint32_t prefixlen;
+
+ r = sd_bus_message_enter_container(m, 'r', "iayu");
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ r = sd_bus_message_read(m, "i", &family);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read_array(m, 'y', &data, &size);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(m, "u", &prefixlen);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return r;
+
+ if (streq(member, "IPAddressAllow")) {
+ union in_addr_union u;
+
+ if (family == AF_INET && size == 4 && prefixlen == 8)
+ memcpy(&u.in, data, size);
+ else if (family == AF_INET6 && size == 16 && prefixlen == 128)
+ memcpy(&u.in6, data, size);
+ else {
+ info->ip_address_allow_other = true;
+ continue;
+ }
+
+ if (in_addr_is_localhost(family, &u))
+ info->ip_address_allow_localhost = true;
+ else
+ info->ip_address_allow_other = true;
+ } else {
+ assert(streq(member, "IPAddressDeny"));
+
+ if (family == AF_INET && size == 4 && prefixlen == 0)
+ deny_ipv4 = true;
+ else if (family == AF_INET6 && size == 16 && prefixlen == 0)
+ deny_ipv6 = true;
+ }
+ }
+
+ info->ip_address_deny_all = deny_ipv4 && deny_ipv6;
+
+ return sd_bus_message_exit_container(m);
+}
+
+static int property_read_ip_filters(
+ sd_bus *bus,
+ const char *member,
+ sd_bus_message *m,
+ sd_bus_error *error,
+ void *userdata) {
+
+ SecurityInfo *info = userdata;
+ _cleanup_(strv_freep) char **l = NULL;
+ int r;
+
+ assert(bus);
+ assert(member);
+ assert(m);
+
+ r = sd_bus_message_read_strv(m, &l);
+ if (r < 0)
+ return r;
+
+ if (streq(member, "IPIngressFilterPath"))
+ info->ip_filters_custom_ingress = !strv_isempty(l);
+ else if (streq(member, "IPEgressFilterPath"))
+ info->ip_filters_custom_egress = !strv_isempty(l);
+
+ return 0;
+}
+
+static int property_read_device_allow(
+ sd_bus *bus,
+ const char *member,
+ sd_bus_message *m,
+ sd_bus_error *error,
+ void *userdata) {
+
+ SecurityInfo *info = userdata;
+ int r;
+
+ assert(bus);
+ assert(member);
+ assert(m);
+
+ r = sd_bus_message_enter_container(m, 'a', "(ss)");
+ if (r < 0)
+ return r;
+
+ for (;;) {
+ const char *name, *policy;
+
+ r = sd_bus_message_read(m, "(ss)", &name, &policy);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ r = strv_extendf(&info->device_allow, "%s:%s", name, policy);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_message_exit_container(m);
+}
+
+static int acquire_security_info(sd_bus *bus, const char *name, SecurityInfo *info, AnalyzeSecurityFlags flags) {
+
+ static const struct bus_properties_map security_map[] = {
+ { "AmbientCapabilities", "t", NULL, offsetof(SecurityInfo, ambient_capabilities) },
+ { "CapabilityBoundingSet", "t", NULL, offsetof(SecurityInfo, capability_bounding_set) },
+ { "DefaultDependencies", "b", NULL, offsetof(SecurityInfo, default_dependencies) },
+ { "Delegate", "b", NULL, offsetof(SecurityInfo, delegate) },
+ { "DeviceAllow", "a(ss)", property_read_device_allow, 0 },
+ { "DevicePolicy", "s", NULL, offsetof(SecurityInfo, device_policy) },
+ { "DynamicUser", "b", NULL, offsetof(SecurityInfo, dynamic_user) },
+ { "FragmentPath", "s", NULL, offsetof(SecurityInfo, fragment_path) },
+ { "IPAddressAllow", "a(iayu)", property_read_ip_address_allow, 0 },
+ { "IPAddressDeny", "a(iayu)", property_read_ip_address_allow, 0 },
+ { "IPIngressFilterPath", "as", property_read_ip_filters, 0 },
+ { "IPEgressFilterPath", "as", property_read_ip_filters, 0 },
+ { "Id", "s", NULL, offsetof(SecurityInfo, id) },
+ { "KeyringMode", "s", NULL, offsetof(SecurityInfo, keyring_mode) },
+ { "ProtectProc", "s", NULL, offsetof(SecurityInfo, protect_proc) },
+ { "ProcSubset", "s", NULL, offsetof(SecurityInfo, proc_subset) },
+ { "LoadState", "s", NULL, offsetof(SecurityInfo, load_state) },
+ { "LockPersonality", "b", NULL, offsetof(SecurityInfo, lock_personality) },
+ { "MemoryDenyWriteExecute", "b", NULL, offsetof(SecurityInfo, memory_deny_write_execute) },
+ { "NoNewPrivileges", "b", NULL, offsetof(SecurityInfo, no_new_privileges) },
+ { "NotifyAccess", "s", NULL, offsetof(SecurityInfo, notify_access) },
+ { "PrivateDevices", "b", NULL, offsetof(SecurityInfo, private_devices) },
+ { "PrivateMounts", "b", NULL, offsetof(SecurityInfo, private_mounts) },
+ { "PrivateNetwork", "b", NULL, offsetof(SecurityInfo, private_network) },
+ { "PrivateTmp", "b", NULL, offsetof(SecurityInfo, private_tmp) },
+ { "PrivateUsers", "b", NULL, offsetof(SecurityInfo, private_users) },
+ { "ProtectControlGroups", "b", NULL, offsetof(SecurityInfo, protect_control_groups) },
+ { "ProtectHome", "s", NULL, offsetof(SecurityInfo, protect_home) },
+ { "ProtectHostname", "b", NULL, offsetof(SecurityInfo, protect_hostname) },
+ { "ProtectKernelModules", "b", NULL, offsetof(SecurityInfo, protect_kernel_modules) },
+ { "ProtectKernelTunables", "b", NULL, offsetof(SecurityInfo, protect_kernel_tunables) },
+ { "ProtectKernelLogs", "b", NULL, offsetof(SecurityInfo, protect_kernel_logs) },
+ { "ProtectClock", "b", NULL, offsetof(SecurityInfo, protect_clock) },
+ { "ProtectSystem", "s", NULL, offsetof(SecurityInfo, protect_system) },
+ { "RemoveIPC", "b", NULL, offsetof(SecurityInfo, remove_ipc) },
+ { "RestrictAddressFamilies", "(bas)", property_read_restrict_address_families, 0 },
+ { "RestrictNamespaces", "t", property_read_restrict_namespaces, 0 },
+ { "RestrictRealtime", "b", NULL, offsetof(SecurityInfo, restrict_realtime) },
+ { "RestrictSUIDSGID", "b", NULL, offsetof(SecurityInfo, restrict_suid_sgid) },
+ { "RootDirectory", "s", NULL, offsetof(SecurityInfo, root_directory) },
+ { "RootImage", "s", NULL, offsetof(SecurityInfo, root_image) },
+ { "SupplementaryGroups", "as", NULL, offsetof(SecurityInfo, supplementary_groups) },
+ { "SystemCallArchitectures", "as", property_read_syscall_archs, 0 },
+ { "SystemCallFilter", "(as)", property_read_system_call_filter, 0 },
+ { "Type", "s", NULL, offsetof(SecurityInfo, type) },
+ { "UMask", "u", property_read_umask, 0 },
+ { "User", "s", NULL, offsetof(SecurityInfo, user) },
+ {}
+ };
+
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_free_ char *path = NULL;
+ int r;
+
+ /* Note: this mangles *info on failure! */
+
+ assert(bus);
+ assert(name);
+ assert(info);
+
+ path = unit_dbus_path_from_name(name);
+ if (!path)
+ return log_oom();
+
+ r = bus_map_all_properties(
+ bus,
+ "org.freedesktop.systemd1",
+ path,
+ security_map,
+ BUS_MAP_STRDUP | BUS_MAP_BOOLEAN_AS_BOOL,
+ &error,
+ NULL,
+ info);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get unit properties: %s", bus_error_message(&error, r));
+
+ if (!streq_ptr(info->load_state, "loaded")) {
+
+ if (FLAGS_SET(flags, ANALYZE_SECURITY_ONLY_LOADED))
+ return -EMEDIUMTYPE;
+
+ if (streq_ptr(info->load_state, "not-found"))
+ log_error("Unit %s not found, cannot analyze.", name);
+ else if (streq_ptr(info->load_state, "masked"))
+ log_error("Unit %s is masked, cannot analyze.", name);
+ else
+ log_error("Unit %s not loaded properly, cannot analyze.", name);
+
+ return -EINVAL;
+ }
+
+ if (FLAGS_SET(flags, ANALYZE_SECURITY_ONLY_LONG_RUNNING) && streq_ptr(info->type, "oneshot"))
+ return -EMEDIUMTYPE;
+
+ if (info->private_devices ||
+ info->private_tmp ||
+ info->protect_control_groups ||
+ info->protect_kernel_tunables ||
+ info->protect_kernel_modules ||
+ !streq_ptr(info->protect_home, "no") ||
+ !streq_ptr(info->protect_system, "no") ||
+ info->root_image)
+ info->private_mounts = true;
+
+ if (info->protect_kernel_modules)
+ info->capability_bounding_set &= ~(UINT64_C(1) << CAP_SYS_MODULE);
+
+ if (info->protect_kernel_logs)
+ info->capability_bounding_set &= ~(UINT64_C(1) << CAP_SYSLOG);
+
+ if (info->protect_clock)
+ info->capability_bounding_set &= ~((UINT64_C(1) << CAP_SYS_TIME) |
+ (UINT64_C(1) << CAP_WAKE_ALARM));
+
+ if (info->private_devices)
+ info->capability_bounding_set &= ~((UINT64_C(1) << CAP_MKNOD) |
+ (UINT64_C(1) << CAP_SYS_RAWIO));
+
+ return 0;
+}
+
+static int analyze_security_one(sd_bus *bus,
+ const char *name,
+ Table *overview_table,
+ AnalyzeSecurityFlags flags,
+ unsigned threshold,
+ JsonVariant *policy,
+ PagerFlags pager_flags,
+ JsonFormatFlags json_format_flags) {
+
+ _cleanup_(security_info_freep) SecurityInfo *info = security_info_new();
+ if (!info)
+ return log_oom();
+
+ int r;
+
+ assert(bus);
+ assert(name);
+
+ r = acquire_security_info(bus, name, info, flags);
+ if (r == -EMEDIUMTYPE) /* Ignore this one because not loaded or Type is oneshot */
+ return 0;
+ if (r < 0)
+ return r;
+
+ r = assess(info, overview_table, flags, threshold, policy, pager_flags, json_format_flags);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+/* Refactoring SecurityInfo so that it can make use of existing struct variables instead of reading from dbus */
+static int get_security_info(Unit *u, ExecContext *c, CGroupContext *g, SecurityInfo **ret_info) {
+ assert(ret_info);
+
+ _cleanup_(security_info_freep) SecurityInfo *info = security_info_new();
+ if (!info)
+ return log_oom();
+
+ if (u) {
+ if (u->id) {
+ info->id = strdup(u->id);
+ if (!info->id)
+ return log_oom();
+ }
+ if (unit_type_to_string(u->type)) {
+ info->type = strdup(unit_type_to_string(u->type));
+ if (!info->type)
+ return log_oom();
+ }
+ if (unit_load_state_to_string(u->load_state)) {
+ info->load_state = strdup(unit_load_state_to_string(u->load_state));
+ if (!info->load_state)
+ return log_oom();
+ }
+ if (u->fragment_path) {
+ info->fragment_path = strdup(u->fragment_path);
+ if (!info->fragment_path)
+ return log_oom();
+ }
+ info->default_dependencies = u->default_dependencies;
+ if (u->type == UNIT_SERVICE && notify_access_to_string(SERVICE(u)->notify_access)) {
+ info->notify_access = strdup(notify_access_to_string(SERVICE(u)->notify_access));
+ if (!info->notify_access)
+ return log_oom();
+ }
+ }
+
+ if (c) {
+ info->ambient_capabilities = c->capability_ambient_set;
+ info->capability_bounding_set = c->capability_bounding_set;
+ if (c->user) {
+ info->user = strdup(c->user);
+ if (!info->user)
+ return log_oom();
+ }
+ if (c->supplementary_groups) {
+ info->supplementary_groups = strv_copy(c->supplementary_groups);
+ if (!info->supplementary_groups)
+ return log_oom();
+ }
+ info->dynamic_user = c->dynamic_user;
+ if (exec_keyring_mode_to_string(c->keyring_mode)) {
+ info->keyring_mode = strdup(exec_keyring_mode_to_string(c->keyring_mode));
+ if (!info->keyring_mode)
+ return log_oom();
+ }
+ if (protect_proc_to_string(c->protect_proc)) {
+ info->protect_proc = strdup(protect_proc_to_string(c->protect_proc));
+ if (!info->protect_proc)
+ return log_oom();
+ }
+ if (proc_subset_to_string(c->proc_subset)) {
+ info->proc_subset = strdup(proc_subset_to_string(c->proc_subset));
+ if (!info->proc_subset)
+ return log_oom();
+ }
+ info->lock_personality = c->lock_personality;
+ info->memory_deny_write_execute = c->memory_deny_write_execute;
+ info->no_new_privileges = c->no_new_privileges;
+ info->protect_hostname = c->protect_hostname;
+ info->private_devices = c->private_devices;
+ info->private_mounts = c->private_mounts;
+ info->private_network = c->private_network;
+ info->private_tmp = c->private_tmp;
+ info->private_users = c->private_users;
+ info->protect_control_groups = c->protect_control_groups;
+ info->protect_kernel_modules = c->protect_kernel_modules;
+ info->protect_kernel_tunables = c->protect_kernel_tunables;
+ info->protect_kernel_logs = c->protect_kernel_logs;
+ info->protect_clock = c->protect_clock;
+ if (protect_home_to_string(c->protect_home)) {
+ info->protect_home = strdup(protect_home_to_string(c->protect_home));
+ if (!info->protect_home)
+ return log_oom();
+ }
+ if (protect_system_to_string(c->protect_system)) {
+ info->protect_system = strdup(protect_system_to_string(c->protect_system));
+ if (!info->protect_system)
+ return log_oom();
+ }
+ info->remove_ipc = c->remove_ipc;
+ info->restrict_address_family_inet =
+ info->restrict_address_family_unix =
+ info->restrict_address_family_netlink =
+ info->restrict_address_family_packet =
+ info->restrict_address_family_other =
+ c->address_families_allow_list;
+
+ void *key;
+ SET_FOREACH(key, c->address_families) {
+ int family = PTR_TO_INT(key);
+ if (family == 0)
+ continue;
+ if (IN_SET(family, AF_INET, AF_INET6))
+ info->restrict_address_family_inet = !c->address_families_allow_list;
+ else if (family == AF_UNIX)
+ info->restrict_address_family_unix = !c->address_families_allow_list;
+ else if (family == AF_NETLINK)
+ info->restrict_address_family_netlink = !c->address_families_allow_list;
+ else if (family == AF_PACKET)
+ info->restrict_address_family_packet = !c->address_families_allow_list;
+ else
+ info->restrict_address_family_other = !c->address_families_allow_list;
+ }
+
+ info->restrict_namespaces = c->restrict_namespaces;
+ info->restrict_realtime = c->restrict_realtime;
+ info->restrict_suid_sgid = c->restrict_suid_sgid;
+ if (c->root_directory) {
+ info->root_directory = strdup(c->root_directory);
+ if (!info->root_directory)
+ return log_oom();
+ }
+ if (c->root_image) {
+ info->root_image = strdup(c->root_image);
+ if (!info->root_image)
+ return log_oom();
+ }
+ info->_umask = c->umask;
+
+#if HAVE_SECCOMP
+ SET_FOREACH(key, c->syscall_archs) {
+ const char *name;
+
+ name = seccomp_arch_to_string(PTR_TO_UINT32(key) - 1);
+ if (!name)
+ continue;
+
+ if (set_put_strdup(&info->system_call_architectures, name) < 0)
+ return log_oom();
+ }
+
+ info->system_call_filter_allow_list = c->syscall_allow_list;
+
+ void *id, *num;
+ HASHMAP_FOREACH_KEY(num, id, c->syscall_filter) {
+ _cleanup_free_ char *name = NULL;
+
+ if (info->system_call_filter_allow_list && PTR_TO_INT(num) >= 0)
+ continue;
+
+ name = seccomp_syscall_resolve_num_arch(SCMP_ARCH_NATIVE, PTR_TO_INT(id) - 1);
+ if (!name)
+ continue;
+
+ if (set_ensure_consume(&info->system_call_filter, &string_hash_ops_free, TAKE_PTR(name)) < 0)
+ return log_oom();
+ }
+#endif
+ }
+
+ if (g) {
+ info->delegate = g->delegate;
+ if (cgroup_device_policy_to_string(g->device_policy)) {
+ info->device_policy = strdup(cgroup_device_policy_to_string(g->device_policy));
+ if (!info->device_policy)
+ return log_oom();
+ }
+
+ struct in_addr_prefix *i;
+ bool deny_ipv4 = false, deny_ipv6 = false;
+
+ SET_FOREACH(i, g->ip_address_deny) {
+ if (i->family == AF_INET && i->prefixlen == 0)
+ deny_ipv4 = true;
+ else if (i->family == AF_INET6 && i->prefixlen == 0)
+ deny_ipv6 = true;
+ }
+ info->ip_address_deny_all = deny_ipv4 && deny_ipv6;
+
+ info->ip_address_allow_localhost = info->ip_address_allow_other = false;
+ SET_FOREACH(i, g->ip_address_allow) {
+ if (in_addr_is_localhost(i->family, &i->address))
+ info->ip_address_allow_localhost = true;
+ else
+ info->ip_address_allow_other = true;
+ }
+
+ info->ip_filters_custom_ingress = !strv_isempty(g->ip_filters_ingress);
+ info->ip_filters_custom_egress = !strv_isempty(g->ip_filters_egress);
+
+ LIST_FOREACH(device_allow, a, g->device_allow)
+ if (strv_extendf(&info->device_allow,
+ "%s:%s%s%s",
+ a->path,
+ a->r ? "r" : "", a->w ? "w" : "", a->m ? "m" : "") < 0)
+ return log_oom();
+ }
+
+ *ret_info = TAKE_PTR(info);
+
+ return 0;
+}
+
+static int offline_security_check(Unit *u,
+ unsigned threshold,
+ JsonVariant *policy,
+ PagerFlags pager_flags,
+ JsonFormatFlags json_format_flags) {
+
+ _cleanup_(table_unrefp) Table *overview_table = NULL;
+ AnalyzeSecurityFlags flags = 0;
+ _cleanup_(security_info_freep) SecurityInfo *info = NULL;
+ int r;
+
+ assert(u);
+
+ if (DEBUG_LOGGING)
+ unit_dump(u, stdout, "\t");
+
+ r = get_security_info(u, unit_get_exec_context(u), unit_get_cgroup_context(u), &info);
+ if (r < 0)
+ return r;
+
+ return assess(info, overview_table, flags, threshold, policy, pager_flags, json_format_flags);
+}
+
+static int offline_security_checks(char **filenames,
+ JsonVariant *policy,
+ LookupScope scope,
+ bool check_man,
+ bool run_generators,
+ unsigned threshold,
+ const char *root,
+ const char *profile,
+ PagerFlags pager_flags,
+ JsonFormatFlags json_format_flags) {
+
+ const ManagerTestRunFlags flags =
+ MANAGER_TEST_RUN_MINIMAL |
+ MANAGER_TEST_RUN_ENV_GENERATORS |
+ MANAGER_TEST_RUN_IGNORE_DEPENDENCIES |
+ run_generators * MANAGER_TEST_RUN_GENERATORS;
+
+ _cleanup_(manager_freep) Manager *m = NULL;
+ Unit *units[strv_length(filenames)];
+ int r, k;
+ size_t count = 0;
+
+ if (strv_isempty(filenames))
+ return 0;
+
+ r = verify_set_unit_path(filenames);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set unit load path: %m");
+
+ r = manager_new(scope, flags, &m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to initialize manager: %m");
+
+ log_debug("Starting manager...");
+
+ r = manager_startup(m, /* serialization= */ NULL, /* fds= */ NULL, root);
+ if (r < 0)
+ return r;
+
+ if (profile) {
+ /* Ensure the temporary directory is in the search path, so that we can add drop-ins. */
+ r = strv_extend(&m->lookup_paths.search_path, m->lookup_paths.temporary_dir);
+ if (r < 0)
+ return log_oom();
+ }
+
+ log_debug("Loading remaining units from the command line...");
+
+ STRV_FOREACH(filename, filenames) {
+ _cleanup_free_ char *prepared = NULL;
+
+ log_debug("Handling %s...", *filename);
+
+ k = verify_prepare_filename(*filename, &prepared);
+ if (k < 0) {
+ log_warning_errno(k, "Failed to prepare filename %s: %m", *filename);
+ if (r == 0)
+ r = k;
+ continue;
+ }
+
+ /* When a portable image is analyzed, the profile is what provides a good chunk of
+ * the security-related settings, but they are obviously not shipped with the image.
+ * This allows to take them in consideration. */
+ if (profile) {
+ _cleanup_free_ char *unit_name = NULL, *dropin = NULL, *profile_path = NULL;
+
+ r = path_extract_filename(prepared, &unit_name);
+ if (r < 0)
+ return log_oom();
+
+ dropin = strjoin(m->lookup_paths.temporary_dir, "/", unit_name, ".d/profile.conf");
+ if (!dropin)
+ return log_oom();
+ (void) mkdir_parents(dropin, 0755);
+
+ if (!is_path(profile)) {
+ r = find_portable_profile(profile, unit_name, &profile_path);
+ if (r < 0)
+ return log_error_errno(r, "Failed to find portable profile %s: %m", profile);
+ profile = profile_path;
+ }
+
+ r = copy_file(profile, dropin, 0, 0644, 0, 0, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to copy: %m");
+ }
+
+ k = manager_load_startable_unit_or_warn(m, NULL, prepared, &units[count]);
+ if (k < 0) {
+ if (r == 0)
+ r = k;
+ continue;
+ }
+
+ count++;
+ }
+
+ for (size_t i = 0; i < count; i++) {
+ k = offline_security_check(units[i], threshold, policy, pager_flags, json_format_flags);
+ if (k < 0 && r == 0)
+ r = k;
+ }
+
+ return r;
+}
+
+static int analyze_security(sd_bus *bus,
+ char **units,
+ JsonVariant *policy,
+ LookupScope scope,
+ bool check_man,
+ bool run_generators,
+ bool offline,
+ unsigned threshold,
+ const char *root,
+ const char *profile,
+ JsonFormatFlags json_format_flags,
+ PagerFlags pager_flags,
+ AnalyzeSecurityFlags flags) {
+
+ _cleanup_(table_unrefp) Table *overview_table = NULL;
+ int ret = 0, r;
+
+ assert(!!bus != offline);
+
+ if (offline)
+ return offline_security_checks(units, policy, scope, check_man, run_generators, threshold, root, profile, pager_flags, json_format_flags);
+
+ if (strv_length(units) != 1) {
+ overview_table = table_new("unit", "exposure", "predicate", "happy");
+ if (!overview_table)
+ return log_oom();
+ }
+
+ if (strv_isempty(units)) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_strv_free_ char **list = NULL;
+ size_t n = 0;
+
+ r = bus_call_method(
+ bus,
+ bus_systemd_mgr,
+ "ListUnits",
+ &error,
+ &reply,
+ NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to list units: %s", bus_error_message(&error, r));
+
+ r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)");
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ for (;;) {
+ UnitInfo info;
+ char *copy = NULL;
+
+ r = bus_parse_unit_info(reply, &info);
+ if (r < 0)
+ return bus_log_parse_error(r);
+ if (r == 0)
+ break;
+
+ if (!endswith(info.id, ".service"))
+ continue;
+
+ if (!GREEDY_REALLOC(list, n + 2))
+ return log_oom();
+
+ copy = strdup(info.id);
+ if (!copy)
+ return log_oom();
+
+ list[n++] = copy;
+ list[n] = NULL;
+ }
+
+ strv_sort(list);
+
+ flags |= ANALYZE_SECURITY_SHORT|ANALYZE_SECURITY_ONLY_LOADED|ANALYZE_SECURITY_ONLY_LONG_RUNNING;
+
+ STRV_FOREACH(i, list) {
+ r = analyze_security_one(bus, *i, overview_table, flags, threshold, policy, pager_flags, json_format_flags);
+ if (r < 0 && ret >= 0)
+ ret = r;
+ }
+
+ } else
+ STRV_FOREACH(i, units) {
+ _cleanup_free_ char *mangled = NULL, *instance = NULL;
+ const char *name;
+
+ if (!FLAGS_SET(flags, ANALYZE_SECURITY_SHORT) && i != units) {
+ putc('\n', stdout);
+ fflush(stdout);
+ }
+
+ r = unit_name_mangle(*i, 0, &mangled);
+ if (r < 0)
+ return log_error_errno(r, "Failed to mangle unit name '%s': %m", *i);
+
+ if (!endswith(mangled, ".service"))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Unit %s is not a service unit, refusing.",
+ *i);
+
+ if (unit_name_is_valid(mangled, UNIT_NAME_TEMPLATE)) {
+ r = unit_name_replace_instance(mangled, "test-instance", &instance);
+ if (r < 0)
+ return log_oom();
+
+ name = instance;
+ } else
+ name = mangled;
+
+ r = analyze_security_one(bus, name, overview_table, flags, threshold, policy, pager_flags, json_format_flags);
+ if (r < 0 && ret >= 0)
+ ret = r;
+ }
+
+ if (overview_table) {
+ if (!FLAGS_SET(flags, ANALYZE_SECURITY_SHORT)) {
+ putc('\n', stdout);
+ fflush(stdout);
+ }
+
+ r = table_print_with_pager(overview_table, json_format_flags, pager_flags, /* show_header= */true);
+ if (r < 0)
+ return log_error_errno(r, "Failed to output table: %m");
+ }
+ return ret;
+}
+
+int verb_security(int argc, char *argv[], void *userdata) {
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ _cleanup_(json_variant_unrefp) JsonVariant *policy = NULL;
+ int r;
+ unsigned line, column;
+
+ if (!arg_offline) {
+ r = acquire_bus(&bus, NULL);
+ if (r < 0)
+ return bus_log_connect_error(r, arg_transport);
+ }
+
+ pager_open(arg_pager_flags);
+
+ if (arg_security_policy) {
+ r = json_parse_file(/*f=*/ NULL, arg_security_policy, /*flags=*/ 0, &policy, &line, &column);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse '%s' at %u:%u: %m", arg_security_policy, line, column);
+ } else {
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_free_ char *pp = NULL;
+
+ r = search_and_fopen_nulstr("systemd-analyze-security.policy", "re", /*root=*/ NULL, CONF_PATHS_NULSTR("systemd"), &f, &pp);
+ if (r < 0 && r != -ENOENT)
+ return r;
+
+ if (f) {
+ r = json_parse_file(f, pp, /*flags=*/ 0, &policy, &line, &column);
+ if (r < 0)
+ return log_error_errno(r, "[%s:%u:%u] Failed to parse JSON policy: %m", pp, line, column);
+ }
+ }
+
+ return analyze_security(bus,
+ strv_skip(argv, 1),
+ policy,
+ arg_scope,
+ arg_man,
+ arg_generators,
+ arg_offline,
+ arg_threshold,
+ arg_root,
+ arg_profile,
+ arg_json_format_flags,
+ arg_pager_flags,
+ /*flags=*/ 0);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-11 19:23:01 +0000