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Add built-in rules
This commit is contained in:
topjohnwu
parent
60a7eaf2bb
commit
c69db035ee
324
builtin_rules.c
Normal file
324
builtin_rules.c
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@ -0,0 +1,324 @@
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#include <stdio.h>
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#include <sepol/policydb/policydb.h>
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#define ALL NULL
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extern int add_rule(char *s, char *t, char *c, char *p, int effect, int not, policydb_t *policy);
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extern void create_domain(char *d, policydb_t *policy);
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extern int add_transition(char *srcS, char *origS, char *tgtS, char *c, policydb_t *policy);
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extern int add_type(char *domainS, char *typeS, policydb_t *policy);
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policydb_t *policy;
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void allow(char *s, char *t, char *c, char *p) {
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add_rule(s, t, c, p, AVTAB_ALLOWED, 0, policy);
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}
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void noaudit(char *s, char *t, char *c, char *p) {
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add_rule(s, t, c, p, AVTAB_AUDITDENY, 0, policy);
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}
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void deny(char *s, char *t, char *c, char *p) {
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add_rule(s, t, c, p, AVTAB_ALLOWED, 1, policy);
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}
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void setPermissive(char* permissive, int permissive_value) {
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type_datum_t *type;
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create_domain(permissive, policy);
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type = hashtab_search(policy->p_types.table, permissive);
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if (type == NULL) {
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fprintf(stderr, "type %s does not exist\n", permissive);
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return;
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}
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if (ebitmap_set_bit(&policy->permissive_map, type->s.value, permissive_value)) {
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fprintf(stderr, "Could not set bit in permissive map\n");
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return;
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}
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}
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int exists(char* source) {
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return (int) hashtab_search(policy->p_types.table, source);
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}
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void samsung() {
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deny("init", "kernel", "security", "load_policy");
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deny("policyloader_app", "security_spota_file", "dir", "read");
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deny("policyloader_app", "security_spota_file", "dir", "write");
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deny("policyloader_app", "security_spota_file", "file", "read");
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deny("policyloader_app", "security_spota_file", "file", "write");
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deny("system_server", "security_spota_file", "dir", "read");
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deny("system_server", "security_spota_file", "dir", "write");
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deny("system_server", "security_spota_file", "file", "read");
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deny("system_server", "security_spota_file", "file", "write");
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deny("system_app", "security_spota_file", "dir", "read");
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deny("system_app", "security_spota_file", "dir", "write");
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deny("system_app", "security_spota_file", "file", "read");
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deny("system_app", "security_spota_file", "file", "write");
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deny("installd", "security_spota_file", "dir", "read");
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deny("installd", "security_spota_file", "dir", "write");
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deny("installd", "security_spota_file", "file", "read");
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deny("installd", "security_spota_file", "file", "write");
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deny("init", "security_spota_file", "dir", "read");
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deny("init", "security_spota_file", "dir", "write");
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deny("init", "security_spota_file", "file", "read");
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deny("init", "security_spota_file", "file", "write");
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deny("ueventd", "security_spota_file", "dir", "read");
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deny("ueventd", "security_spota_file", "dir", "write");
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deny("ueventd", "security_spota_file", "file", "read");
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deny("ueventd", "security_spota_file", "file", "write");
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deny("runas", "security_spota_file", "dir", "read");
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deny("runas", "security_spota_file", "dir", "write");
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deny("runas", "security_spota_file", "file", "read");
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deny("runas", "security_spota_file", "file", "write");
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deny("drsd", "security_spota_file", "dir", "read");
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deny("drsd", "security_spota_file", "dir", "write");
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deny("drsd", "security_spota_file", "file", "read");
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deny("drsd", "security_spota_file", "file", "write");
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deny("debuggerd", "security_spota_file", "dir", "read");
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deny("debuggerd", "security_spota_file", "dir", "write");
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deny("debuggerd", "security_spota_file", "file", "read");
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deny("debuggerd", "security_spota_file", "file", "write");
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deny("vold", "security_spota_file", "dir", "read");
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deny("vold", "security_spota_file", "dir", "write");
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deny("vold", "security_spota_file", "file", "read");
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deny("vold", "security_spota_file", "file", "write");
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deny("zygote", "security_spota_file", "dir", "read");
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deny("zygote", "security_spota_file", "dir", "write");
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deny("zygote", "security_spota_file", "file", "read");
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deny("zygote", "security_spota_file", "file", "write");
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deny("auditd", "security_spota_file", "dir", "read");
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deny("auditd", "security_spota_file", "dir", "write");
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deny("auditd", "security_spota_file", "file", "read");
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deny("auditd", "security_spota_file", "file", "write");
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deny("servicemanager", "security_spota_file", "dir", "read");
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deny("servicemanager", "security_spota_file", "dir", "write");
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deny("servicemanager", "security_spota_file", "file", "read");
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deny("servicemanager", "security_spota_file", "file", "write");
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deny("itsonbs", "security_spota_file", "dir", "read");
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deny("itsonbs", "security_spota_file", "dir", "write");
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deny("itsonbs", "security_spota_file", "file", "read");
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deny("itsonbs", "security_spota_file", "file", "write");
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deny("commonplatformappdomain", "security_spota_file", "dir", "read");
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deny("commonplatformappdomain", "security_spota_file", "dir", "write");
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deny("commonplatformappdomain", "security_spota_file", "file", "read");
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deny("commonplatformappdomain", "security_spota_file", "file", "write");
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}
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void allowSuClient(char *target) {
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allow(target, "rootfs", "file", "execute_no_trans");
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allow(target, "rootfs", "file", "execute");
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allow(target, "su_daemon", "unix_stream_socket", "connectto");
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allow(target, "su_daemon", "unix_stream_socket", "getopt");
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allow(target, "su_device", "dir", "search");
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allow(target, "su_device", "dir", "read");
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allow(target, "su_device", "sock_file", "read");
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allow(target, "su_device", "sock_file", "write");
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allow("su_daemon", target, "fd", "use");
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allow("su_daemon", target, "fifo_file", "read");
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allow("su_daemon", target, "fifo_file", "write");
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allow("su_daemon", target, "fifo_file", "getattr");
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allow("su_daemon", target, "fifo_file", "ioctl");
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allow("su_daemon", target, "dir", "search");
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allow("su_daemon", target, "file", "read");
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allow("su_daemon", target, "file", "open");
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allow("su_daemon", target, "lnk_file", "read");
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allow("su_daemon", "su_daemon", "capability", "sys_ptrace");
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}
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void suDaemonRights() {
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allow("su_daemon", "rootfs", "file", "entrypoint");
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allow("su_daemon", "su_daemon", "dir", "search");
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allow("su_daemon", "su_daemon", "dir", "read");
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allow("su_daemon", "su_daemon", "file", "read");
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allow("su_daemon", "su_daemon", "file", "write");
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allow("su_daemon", "su_daemon", "file", "open");
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allow("su_daemon", "su_daemon", "lnk_file", "read");
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allow("su_daemon", "su_daemon", "unix_dgram_socket", "create");
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allow("su_daemon", "su_daemon", "unix_dgram_socket", "connect");
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allow("su_daemon", "su_daemon", "unix_dgram_socket", "write");
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allow("su_daemon", "su_daemon", "unix_stream_socket", "create");
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allow("su_daemon", "su_daemon", "unix_stream_socket", "ioctl");
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allow("su_daemon", "su_daemon", "unix_stream_socket", "read");
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allow("su_daemon", "su_daemon", "unix_stream_socket", "getattr");
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allow("su_daemon", "su_daemon", "unix_stream_socket", "write");
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allow("su_daemon", "su_daemon", "unix_stream_socket", "setattr");
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allow("su_daemon", "su_daemon", "unix_stream_socket", "lock");
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allow("su_daemon", "su_daemon", "unix_stream_socket", "append");
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allow("su_daemon", "su_daemon", "unix_stream_socket", "bind");
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allow("su_daemon", "su_daemon", "unix_stream_socket", "connect");
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allow("su_daemon", "su_daemon", "unix_stream_socket", "getopt");
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allow("su_daemon", "su_daemon", "unix_stream_socket", "setopt");
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allow("su_daemon", "su_daemon", "unix_stream_socket", "shutdown");
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allow("su_daemon", "su_daemon", "unix_stream_socket", "listen");
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allow("su_daemon", "su_daemon", "unix_stream_socket", "accept");
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allow("su_daemon", "devpts", "chr_file", "read");
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allow("su_daemon", "devpts", "chr_file", "write");
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allow("su_daemon", "devpts", "chr_file", "open");
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allow("su_daemon", "devpts", "chr_file", "getattr");
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allow("su_daemon", "untrusted_app_devpts", "chr_file", "read");
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allow("su_daemon", "untrusted_app_devpts", "chr_file", "write");
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allow("su_daemon", "untrusted_app_devpts", "chr_file", "open");
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allow("su_daemon", "untrusted_app_devpts", "chr_file", "getattr");
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allow("su_daemon", "su_daemon", "capability", "setuid");
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allow("su_daemon", "su_daemon", "capability", "setgid");
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allow("su_daemon", "app_data_file", "dir", "getattr");
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allow("su_daemon", "app_data_file", "dir", "search");
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allow("su_daemon", "app_data_file", "dir", "write");
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allow("su_daemon", "app_data_file", "dir", "add_name");
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allow("su_daemon", "app_data_file", "file", "getattr");
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allow("su_daemon", "app_data_file", "file", "read");
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allow("su_daemon", "app_data_file", "file", "open");
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allow("su_daemon", "app_data_file", "file", "lock");
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allow("su_daemon", "su_daemon", "capability", "dac_override");
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allow("su_daemon", "su_daemon", "process", "fork");
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allow("su_daemon", "su_daemon", "process", "sigchld");
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allow("su_daemon", "toolbox_exec", "file", "execute");
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allow("su_daemon", "toolbox_exec", "file", "read");
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allow("su_daemon", "toolbox_exec", "file", "open");
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allow("su_daemon", "toolbox_exec", "file", "execute_no_trans");
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allow("su_daemon", "device", "dir", "write");
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allow("su_daemon", "device", "dir", "add_name");
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allow("su_daemon", "su_device", "dir", "create");
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allow("su_daemon", "su_device", "dir", "setattr");
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allow("su_daemon", "su_device", "dir", "remove_name");
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allow("su_daemon", "su_device", "dir", "add_name");
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allow("su_daemon", "su_device", "sock_file", "create");
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allow("su_daemon", "su_device", "sock_file", "unlink");
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allow("su_daemon", "zygote_exec", "file", "execute");
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allow("su_daemon", "zygote_exec", "file", "read");
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allow("su_daemon", "zygote_exec", "file", "open");
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allow("su_daemon", "zygote_exec", "file", "execute_no_trans");
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allow("su_daemon", "zygote_exec", "lnk_file", "read");
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allow("su_daemon", "zygote_exec", "lnk_file", "getattr");
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allow("su_daemon", "su_device", "dir", "search");
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allow("su_daemon", "su_device", "dir", "write");
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allow("su_daemon", "su_device", "dir", "add_name");
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allow("su_daemon", "su_daemon", "process", "setexec");
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allow("su_daemon", "shell_exec", "file", "execute");
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allow("su_daemon", "shell_exec", "file", "read");
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allow("su_daemon", "shell_exec", "file", "open");
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allow("su_daemon", "su_daemon", "capability", "chown");
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allow("su_daemon", "su", "process", "transition");
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noaudit("su_daemon", "su", "process", "siginh rlimitinh noatsecure");
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}
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void suBind() {
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allow("su_daemon", "su_exec", "file", "mounton");
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allow("su_daemon", "su_exec", "file", "read");
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allow("su_daemon", "su_device", "dir", ALL);
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allow("su_daemon", "su_device", "file", ALL);
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allow("su_daemon", "su_device", "lnk_file", ALL);
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allow("su_daemon", "system_file", "file", "relabelto");
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}
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void suRights() {
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allow("su_daemon", "su_daemon", "capability", "sys_admin");
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allow("servicemanager", "su", "dir", "search");
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allow("servicemanager", "su", "dir", "read");
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allow("servicemanager", "su", "file", "open");
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allow("servicemanager", "su", "file", "read");
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allow("servicemanager", "su", "process", "getattr");
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allow("servicemanager", "su", "binder", "transfer");
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allow("system_server", "su", "binder", "call");
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}
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void otherToSU() {
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// allowLog
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allow("logd", "su", "dir", "search");
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allow("logd", "su", "file", "read");
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allow("logd", "su", "file", "open");
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allow("logd", "su", "file", "getattr");
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// suBackL0
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allow("system_server", "su", "binder", "call");
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allow("system_server", "su", "binder", "transfer");
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// ES Explorer opens a sokcet
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allow("untrusted_app", "su", "unix_stream_socket", "ioctl");
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allow("untrusted_app", "su", "unix_stream_socket", "read");
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allow("untrusted_app", "su", "unix_stream_socket", "getattr");
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allow("untrusted_app", "su", "unix_stream_socket", "write");
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allow("untrusted_app", "su", "unix_stream_socket", "setattr");
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allow("untrusted_app", "su", "unix_stream_socket", "lock");
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allow("untrusted_app", "su", "unix_stream_socket", "append");
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allow("untrusted_app", "su", "unix_stream_socket", "bind");
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allow("untrusted_app", "su", "unix_stream_socket", "connect");
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allow("untrusted_app", "su", "unix_stream_socket", "getopt");
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allow("untrusted_app", "su", "unix_stream_socket", "setopt");
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allow("untrusted_app", "su", "unix_stream_socket", "shutdown");
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allow("untrusted_app", "su", "unix_stream_socket", "connectto");
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// Any domain is allowed to send su "sigchld"
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allow(ALL, "su", "process", "sigchld");
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// uNetworkL0
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add_type("su", "netdomain", policy);
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add_type("su", "bluetoothdomain", policy);
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// suBackL6
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allow("surfaceflinger", "app_data_file", "dir", ALL);
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allow("surfaceflinger", "app_data_file", "file", ALL);
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allow("surfaceflinger", "app_data_file", "lnk_file", ALL);
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add_type("surfaceflinger", "mlstrustedsubject", policy);
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}
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void suL9() {
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allow("su_daemon", "su_daemon", "dir", ALL);
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allow("su_daemon", "su_daemon", "file", ALL);
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allow("su_daemon", "su_daemon", "lnk_file", ALL);
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allow("su_daemon", "system_data_file", "dir", ALL);
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allow("su_daemon", "system_data_file", "file", ALL);
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allow("su_daemon", "system_data_file", "lnk_file", ALL);
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||||||
|
allow("su_daemon", "labeledfs", "filesystem", "associate");
|
||||||
|
allow("su_daemon", "su_daemon", "process", "setfscreate");
|
||||||
|
allow("su_daemon", "tmpfs", "filesystem", "associate");
|
||||||
|
allow("su_daemon", "su_daemon", "file", "relabelfrom");
|
||||||
|
allow("su_daemon", "system_file", "file", "mounton");
|
||||||
|
}
|
||||||
|
|
||||||
|
void builtin_rules(policydb_t *policydb) {
|
||||||
|
policy = policydb;
|
||||||
|
|
||||||
|
// Samsung specific
|
||||||
|
// Prevent system from loading policy
|
||||||
|
if(exists("knox_system_app")) {
|
||||||
|
samsung();
|
||||||
|
}
|
||||||
|
|
||||||
|
// Create domains if they don't exist
|
||||||
|
setPermissive("su", 1);
|
||||||
|
setPermissive("su_device", 0);
|
||||||
|
setPermissive("su_daemon", 0);
|
||||||
|
|
||||||
|
// Autotransition su's socket to su_device
|
||||||
|
add_transition("su_daemon", "device", "su_device", "file", policy);
|
||||||
|
add_transition("su_daemon", "device", "su_device", "dir", policy);
|
||||||
|
allow("su_device", "tmpfs", "filesystem", "associate");
|
||||||
|
|
||||||
|
// Transition from untrusted_app to su_client
|
||||||
|
allowSuClient("shell");
|
||||||
|
allowSuClient("untrusted_app");
|
||||||
|
allowSuClient("platform_app");
|
||||||
|
allowSuClient("su");
|
||||||
|
|
||||||
|
if(exists("ssd_tool")) {
|
||||||
|
allowSuClient("ssd_tool");
|
||||||
|
}
|
||||||
|
|
||||||
|
// Allow init to execute su daemon/transition
|
||||||
|
allow("init", "su_daemon", "process", "transition");
|
||||||
|
noaudit("init", "su_daemon", "process", "rlimitinh");
|
||||||
|
noaudit("init", "su_daemon", "process", "siginh");
|
||||||
|
noaudit("init", "su_daemon", "process", "noatsecure");
|
||||||
|
suDaemonRights();
|
||||||
|
suBind();
|
||||||
|
suRights();
|
||||||
|
otherToSU();
|
||||||
|
|
||||||
|
// Need to set su_device/su as trusted to be accessible from other categories
|
||||||
|
add_type("su_device", "mlstrustedobject", policy);
|
||||||
|
add_type("su_daemon", "mlstrustedsubject", policy);
|
||||||
|
add_type("su", "mlstrustedsubject", policy);
|
||||||
|
|
||||||
|
suL9();
|
||||||
|
}
|
||||||
@ -23,6 +23,8 @@
|
|||||||
#include <sepol/policydb/conditional.h>
|
#include <sepol/policydb/conditional.h>
|
||||||
#include <sepol/policydb/constraint.h>
|
#include <sepol/policydb/constraint.h>
|
||||||
|
|
||||||
|
extern void builtin_rules(policydb_t *policydb);
|
||||||
|
|
||||||
void usage(char *arg0) {
|
void usage(char *arg0) {
|
||||||
fprintf(stderr, "%s -s <source type> -t <target type> -c <class> -p <perm_list> -P <policy file>\n", arg0);
|
fprintf(stderr, "%s -s <source type> -t <target type> -c <class> -p <perm_list> -P <policy file>\n", arg0);
|
||||||
fprintf(stderr, "\tInject a rule\n\n");
|
fprintf(stderr, "\tInject a rule\n\n");
|
||||||
@ -651,8 +653,7 @@ int main(int argc, char **argv)
|
|||||||
return 1;
|
return 1;
|
||||||
|
|
||||||
if (builtin) {
|
if (builtin) {
|
||||||
// TODO: Create builtin rules
|
builtin_rules(&policydb);
|
||||||
// builtin(&policydb);
|
|
||||||
}
|
}
|
||||||
else if (permissive) {
|
else if (permissive) {
|
||||||
type_datum_t *type;
|
type_datum_t *type;
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user