mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-12-15 08:20:16 +08:00
4f66c93f61
Use SELinux "db_table: { truncate }" to check if permission is granted to
TRUNCATE. Update example SELinux policy to grant needed permission for
TRUNCATE. Add new regression test to demonstrate a positive and negative
cases. Test will only be run if the loaded SELinux policy has the
"db_table: { truncate }" permission. Makes use of recent commit which added
object TRUNCATE hook. Patch by Yuli Khodorkovskiy with minor
editorialization by me. Not back-patched because the object TRUNCATE hook
was not.
Author: Yuli Khodorkovskiy
Reviewed-by: Joe Conway
Discussion: https://postgr.es/m/CAFL5wJcomybj1Xdw7qWmPJRpGuFukKgNrDb6uVBaCMgYS9dkaA%40mail.gmail.com
262 lines
9.5 KiB
Plaintext
262 lines
9.5 KiB
Plaintext
policy_module(sepgsql-regtest, 1.08)
|
|
|
|
gen_require(`
|
|
all_userspace_class_perms
|
|
')
|
|
|
|
## <desc>
|
|
## <p>
|
|
## Allow to launch regression test of SE-PostgreSQL
|
|
## Don't switch to TRUE in normal cases
|
|
## </p>
|
|
## </desc>
|
|
gen_tunable(sepgsql_regression_test_mode, false)
|
|
|
|
#
|
|
# Type definitions for regression test
|
|
#
|
|
type sepgsql_regtest_trusted_proc_exec_t;
|
|
postgresql_procedure_object(sepgsql_regtest_trusted_proc_exec_t)
|
|
type sepgsql_nosuch_trusted_proc_exec_t;
|
|
postgresql_procedure_object(sepgsql_nosuch_trusted_proc_exec_t)
|
|
|
|
type sepgsql_regtest_invisible_schema_t;
|
|
postgresql_schema_object(sepgsql_regtest_invisible_schema_t);
|
|
|
|
#
|
|
# Test domains for self defined unconfined / superuser
|
|
#
|
|
role sepgsql_regtest_superuser_r;
|
|
userdom_base_user_template(sepgsql_regtest_superuser)
|
|
userdom_manage_home_role(sepgsql_regtest_superuser_r, sepgsql_regtest_superuser_t)
|
|
userdom_exec_user_home_content_files(sepgsql_regtest_superuser_t)
|
|
userdom_write_user_tmp_sockets(sepgsql_regtest_superuser_t)
|
|
|
|
auth_read_passwd(sepgsql_regtest_superuser_t)
|
|
|
|
optional_policy(`
|
|
postgresql_stream_connect(sepgsql_regtest_superuser_t)
|
|
postgresql_unconfined(sepgsql_regtest_superuser_t)
|
|
')
|
|
optional_policy(`
|
|
unconfined_stream_connect(sepgsql_regtest_superuser_t)
|
|
unconfined_rw_pipes(sepgsql_regtest_superuser_t)
|
|
')
|
|
optional_policy(`
|
|
gen_require(`
|
|
attribute sepgsql_client_type;
|
|
')
|
|
allow sepgsql_regtest_superuser_t self : process { setcurrent };
|
|
allow sepgsql_regtest_superuser_t { self sepgsql_client_type } : process { dyntransition };
|
|
')
|
|
|
|
# Type transition rules
|
|
allow sepgsql_regtest_user_t sepgsql_regtest_dba_t : process { transition };
|
|
type_transition sepgsql_regtest_user_t sepgsql_regtest_trusted_proc_exec_t:process sepgsql_regtest_dba_t;
|
|
type_transition sepgsql_regtest_user_t sepgsql_nosuch_trusted_proc_exec_t:process sepgsql_regtest_nosuch_t;
|
|
|
|
#
|
|
# Test domains for database administrators
|
|
#
|
|
role sepgsql_regtest_dba_r;
|
|
userdom_base_user_template(sepgsql_regtest_dba)
|
|
userdom_manage_home_role(sepgsql_regtest_dba_r, sepgsql_regtest_dba_t)
|
|
userdom_exec_user_home_content_files(sepgsql_regtest_dba_t)
|
|
userdom_write_user_tmp_sockets(sepgsql_regtest_user_t)
|
|
|
|
auth_read_passwd(sepgsql_regtest_dba_t)
|
|
|
|
optional_policy(`
|
|
postgresql_admin(sepgsql_regtest_dba_t, sepgsql_regtest_dba_r)
|
|
postgresql_stream_connect(sepgsql_regtest_dba_t)
|
|
')
|
|
optional_policy(`
|
|
unconfined_stream_connect(sepgsql_regtest_dba_t)
|
|
unconfined_rw_pipes(sepgsql_regtest_dba_t)
|
|
')
|
|
|
|
# Type transition rules
|
|
allow sepgsql_regtest_dba_t self : process { setcurrent };
|
|
allow sepgsql_regtest_dba_t sepgsql_regtest_user_t : process { dyntransition };
|
|
allow sepgsql_regtest_dba_t sepgsql_regtest_foo_t : process { dyntransition };
|
|
allow sepgsql_regtest_dba_t sepgsql_regtest_var_t : process { dyntransition };
|
|
|
|
# special rule for system columns
|
|
optional_policy(`
|
|
gen_require(`
|
|
attribute sepgsql_table_type;
|
|
type sepgsql_sysobj_t;
|
|
')
|
|
type_transition sepgsql_regtest_dba_t sepgsql_table_type:db_column sepgsql_sysobj_t "ctid";
|
|
type_transition sepgsql_regtest_dba_t sepgsql_table_type:db_column sepgsql_sysobj_t "oid";
|
|
type_transition sepgsql_regtest_dba_t sepgsql_table_type:db_column sepgsql_sysobj_t "xmin";
|
|
type_transition sepgsql_regtest_dba_t sepgsql_table_type:db_column sepgsql_sysobj_t "xmax";
|
|
type_transition sepgsql_regtest_dba_t sepgsql_table_type:db_column sepgsql_sysobj_t "cmin";
|
|
type_transition sepgsql_regtest_dba_t sepgsql_table_type:db_column sepgsql_sysobj_t "cmax";
|
|
type_transition sepgsql_regtest_dba_t sepgsql_table_type:db_column sepgsql_sysobj_t "tableoid";
|
|
')
|
|
|
|
#
|
|
# Dummy domain for unpriv users
|
|
#
|
|
role sepgsql_regtest_user_r;
|
|
userdom_base_user_template(sepgsql_regtest_user)
|
|
userdom_manage_home_role(sepgsql_regtest_user_r, sepgsql_regtest_user_t)
|
|
userdom_exec_user_home_content_files(sepgsql_regtest_user_t)
|
|
userdom_write_user_tmp_sockets(sepgsql_regtest_user_t)
|
|
|
|
auth_read_passwd(sepgsql_regtest_user_t)
|
|
|
|
optional_policy(`
|
|
postgresql_role(sepgsql_regtest_user_r, sepgsql_regtest_user_t)
|
|
postgresql_stream_connect(sepgsql_regtest_user_t)
|
|
')
|
|
optional_policy(`
|
|
unconfined_stream_connect(sepgsql_regtest_user_t)
|
|
unconfined_rw_pipes(sepgsql_regtest_user_t)
|
|
')
|
|
# Type transition rules
|
|
allow sepgsql_regtest_user_t sepgsql_regtest_dba_t : process { transition };
|
|
type_transition sepgsql_regtest_user_t sepgsql_regtest_trusted_proc_exec_t:process sepgsql_regtest_dba_t;
|
|
type_transition sepgsql_regtest_user_t sepgsql_nosuch_trusted_proc_exec_t:process sepgsql_regtest_nosuch_t;
|
|
|
|
#
|
|
# Dummy domain for (virtual) connection pooler software
|
|
#
|
|
# XXX - this test scenario assumes sepgsql_regtest_pool_t domain performs
|
|
# as a typical connection pool server; that switches the client label of
|
|
# this session prior to any user queries. The sepgsql_regtest_(foo|var)_t
|
|
# is allowed to access its own table types, but not allowed to reference
|
|
# other's one.
|
|
#
|
|
role sepgsql_regtest_pool_r;
|
|
userdom_base_user_template(sepgsql_regtest_pool)
|
|
userdom_manage_home_role(sepgsql_regtest_pool_r, sepgsql_regtest_pool_t)
|
|
userdom_exec_user_home_content_files(sepgsql_regtest_pool_t)
|
|
userdom_write_user_tmp_sockets(sepgsql_regtest_pool_t)
|
|
|
|
auth_read_passwd(sepgsql_regtest_pool_t)
|
|
|
|
type sepgsql_regtest_foo_t;
|
|
type sepgsql_regtest_var_t;
|
|
type sepgsql_regtest_foo_table_t;
|
|
type sepgsql_regtest_var_table_t;
|
|
|
|
allow sepgsql_regtest_foo_t sepgsql_regtest_foo_table_t:db_table { getattr select update insert delete lock };
|
|
allow sepgsql_regtest_foo_t sepgsql_regtest_foo_table_t:db_column { getattr select update insert };
|
|
allow sepgsql_regtest_foo_t sepgsql_regtest_foo_table_t:db_tuple { select update insert delete };
|
|
|
|
allow sepgsql_regtest_var_t sepgsql_regtest_var_table_t:db_table { getattr select update insert delete lock };
|
|
allow sepgsql_regtest_var_t sepgsql_regtest_var_table_t:db_column { getattr select update insert };
|
|
allow sepgsql_regtest_var_t sepgsql_regtest_var_table_t:db_tuple { select update insert delete };
|
|
|
|
optional_policy(`
|
|
gen_require(`
|
|
class db_table { truncate };
|
|
')
|
|
|
|
allow sepgsql_regtest_superuser_t sepgsql_regtest_foo_table_t:db_table { truncate };
|
|
')
|
|
|
|
optional_policy(`
|
|
gen_require(`
|
|
role unconfined_r;
|
|
')
|
|
postgresql_role(unconfined_r, sepgsql_regtest_foo_t)
|
|
postgresql_role(unconfined_r, sepgsql_regtest_var_t)
|
|
postgresql_table_object(sepgsql_regtest_foo_table_t)
|
|
postgresql_table_object(sepgsql_regtest_var_table_t)
|
|
')
|
|
optional_policy(`
|
|
postgresql_stream_connect(sepgsql_regtest_pool_t)
|
|
postgresql_role(sepgsql_regtest_pool_r, sepgsql_regtest_pool_t)
|
|
')
|
|
optional_policy(`
|
|
unconfined_stream_connect(sepgsql_regtest_pool_t)
|
|
unconfined_rw_pipes(sepgsql_regtest_pool_t)
|
|
')
|
|
# type transitions
|
|
allow sepgsql_regtest_pool_t self:process { setcurrent };
|
|
allow sepgsql_regtest_pool_t sepgsql_regtest_dba_t:process { transition };
|
|
type_transition sepgsql_regtest_pool_t sepgsql_regtest_trusted_proc_exec_t:process sepgsql_regtest_dba_t;
|
|
|
|
allow { sepgsql_regtest_foo_t sepgsql_regtest_var_t } self:process { setcurrent };
|
|
allow { sepgsql_regtest_foo_t sepgsql_regtest_var_t } sepgsql_regtest_pool_t:process { dyntransition };
|
|
|
|
#
|
|
# Dummy domain for non-exist users
|
|
#
|
|
role sepgsql_regtest_nosuch_r;
|
|
userdom_base_user_template(sepgsql_regtest_nosuch)
|
|
optional_policy(`
|
|
postgresql_role(sepgsql_regtest_nosuch_r, sepgsql_regtest_nosuch_t)
|
|
')
|
|
|
|
#
|
|
# Rules to launch psql in the dummy domains
|
|
#
|
|
optional_policy(`
|
|
gen_require(`
|
|
role unconfined_r;
|
|
type unconfined_t;
|
|
type sepgsql_trusted_proc_t;
|
|
')
|
|
tunable_policy(`sepgsql_regression_test_mode',`
|
|
allow unconfined_t self : process { setcurrent dyntransition };
|
|
allow unconfined_t sepgsql_regtest_dba_t : process { transition dyntransition };
|
|
allow unconfined_t sepgsql_regtest_superuser_t : process { transition dyntransition };
|
|
allow unconfined_t sepgsql_regtest_user_t : process { transition dyntransition };
|
|
allow unconfined_t sepgsql_regtest_pool_t : process { transition dyntransition };
|
|
')
|
|
role unconfined_r types sepgsql_regtest_dba_t;
|
|
role unconfined_r types sepgsql_regtest_superuser_t;
|
|
role unconfined_r types sepgsql_regtest_user_t;
|
|
role unconfined_r types sepgsql_regtest_nosuch_t;
|
|
role unconfined_r types sepgsql_trusted_proc_t;
|
|
|
|
role unconfined_r types sepgsql_regtest_pool_t;
|
|
role unconfined_r types sepgsql_regtest_foo_t;
|
|
role unconfined_r types sepgsql_regtest_var_t;
|
|
')
|
|
|
|
#
|
|
# Rule to make MCS policy work on regression test
|
|
#
|
|
# NOTE: MCS (multi category security) policy was enabled by default, to
|
|
# allow DAC style access control, in the previous selinux policy.
|
|
# However, its definition was changed later, then a limited number of
|
|
# applications are restricted by MCS policy, for container features
|
|
# mainly. The rules below enables MCS policy for domains of regression
|
|
# test also, even if base security policy does not apply. If base policy
|
|
# is old and MCS is enabled in default, rules below does nothing.
|
|
#
|
|
optional_policy(`
|
|
gen_require(`
|
|
type sepgsql_trusted_proc_t;
|
|
')
|
|
mcs_constrained(sepgsql_regtest_dba_t)
|
|
mcs_constrained(sepgsql_regtest_superuser_t)
|
|
mcs_constrained(sepgsql_regtest_user_t)
|
|
mcs_constrained(sepgsql_regtest_nosuch_t)
|
|
mcs_constrained(sepgsql_trusted_proc_t)
|
|
|
|
mcs_constrained(sepgsql_regtest_pool_t)
|
|
mcs_constrained(sepgsql_regtest_foo_t)
|
|
mcs_constrained(sepgsql_regtest_var_t)
|
|
')
|
|
|
|
#
|
|
# Rule to execute original trusted procedures
|
|
#
|
|
# These rules intends to allow any valid client types to launch trusted-
|
|
# procedures (including ones causes domain transition to invalid domain)
|
|
# being labeled as sepgsql_regtest_trusted_proc_exec_t and
|
|
# sepgsql_nosuch_trusted_proc_exec_t.
|
|
#
|
|
optional_policy(`
|
|
gen_require(`
|
|
attribute sepgsql_client_type;
|
|
')
|
|
allow sepgsql_client_type { sepgsql_regtest_trusted_proc_exec_t sepgsql_nosuch_trusted_proc_exec_t }:db_procedure { getattr execute entrypoint };
|
|
')
|