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1dd06ede17
Backpatch to all supported versions, where applicable, to make backpatching of future fixes go more smoothly. Josh Soref Discussion: https://www.postgresql.org/message-id/CACZqfqCf+5qRztLPgmmosr-B0Ye4srWzzw_mo4c_8_B_mtjmJQ@mail.gmail.com
244 lines
7.6 KiB
PL/PgSQL
244 lines
7.6 KiB
PL/PgSQL
--
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-- Regression Tests for Label Management
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--
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--
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-- Setup
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--
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CREATE TABLE t1 (a int, b text);
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INSERT INTO t1 VALUES (1, 'aaa'), (2, 'bbb'), (3, 'ccc');
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SELECT * INTO t2 FROM t1 WHERE a % 2 = 0;
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CREATE FUNCTION f1 () RETURNS text
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AS 'SELECT sepgsql_getcon()'
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LANGUAGE sql;
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CREATE FUNCTION f2 () RETURNS text
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AS 'SELECT sepgsql_getcon()'
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LANGUAGE sql;
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SECURITY LABEL ON FUNCTION f2()
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IS 'system_u:object_r:sepgsql_trusted_proc_exec_t:s0';
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CREATE FUNCTION f3 () RETURNS text
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AS 'BEGIN
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RAISE EXCEPTION ''an exception from f3()'';
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RETURN NULL;
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END;' LANGUAGE plpgsql;
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SECURITY LABEL ON FUNCTION f3()
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IS 'system_u:object_r:sepgsql_trusted_proc_exec_t:s0';
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CREATE FUNCTION f4 () RETURNS text
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AS 'SELECT sepgsql_getcon()'
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LANGUAGE sql;
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SECURITY LABEL ON FUNCTION f4()
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IS 'system_u:object_r:sepgsql_nosuch_trusted_proc_exec_t:s0';
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CREATE FUNCTION f5 (text) RETURNS bool
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AS 'SELECT sepgsql_setcon($1)'
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LANGUAGE sql;
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SECURITY LABEL ON FUNCTION f5(text)
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IS 'system_u:object_r:sepgsql_regtest_trusted_proc_exec_t:s0';
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CREATE TABLE auth_tbl(uname text, credential text, label text);
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INSERT INTO auth_tbl
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VALUES ('foo', 'acbd18db4cc2f85cedef654fccc4a4d8', 'sepgsql_regtest_foo_t:s0'),
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('var', 'b2145aac704ce76dbe1ac7adac535b23', 'sepgsql_regtest_var_t:s0'),
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('baz', 'b2145aac704ce76dbe1ac7adac535b23', 'sepgsql_regtest_baz_t:s0');
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SECURITY LABEL ON TABLE auth_tbl
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IS 'system_u:object_r:sepgsql_secret_table_t:s0';
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CREATE FUNCTION auth_func(text, text) RETURNS bool
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LANGUAGE sql
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AS 'SELECT sepgsql_setcon(regexp_replace(sepgsql_getcon(), ''_r:.*$'', ''_r:'' || label))
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FROM auth_tbl WHERE uname = $1 AND credential = $2';
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SECURITY LABEL ON FUNCTION auth_func(text,text)
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IS 'system_u:object_r:sepgsql_regtest_trusted_proc_exec_t:s0';
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CREATE TABLE foo_tbl(a int, b text);
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INSERT INTO foo_tbl VALUES (1, 'aaa'), (2,'bbb'), (3,'ccc'), (4,'ddd');
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SECURITY LABEL ON TABLE foo_tbl
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IS 'system_u:object_r:sepgsql_regtest_foo_table_t:s0';
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CREATE TABLE var_tbl(x int, y text);
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INSERT INTO var_tbl VALUES (2,'xxx'), (3,'yyy'), (4,'zzz'), (5,'xyz');
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SECURITY LABEL ON TABLE var_tbl
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IS 'system_u:object_r:sepgsql_regtest_var_table_t:s0';
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--
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-- Tests for default labeling behavior
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--
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-- @SECURITY-CONTEXT=unconfined_u:unconfined_r:sepgsql_regtest_user_t:s0
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CREATE TABLE t3 (s int, t text);
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INSERT INTO t3 VALUES (1, 'sss'), (2, 'ttt'), (3, 'uuu');
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-- @SECURITY-CONTEXT=unconfined_u:unconfined_r:sepgsql_regtest_dba_t:s0
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CREATE TABLE t4 (m int, n text);
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INSERT INTO t4 VALUES (1,'mmm'), (2,'nnn'), (3,'ooo');
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SELECT objtype, objname, label FROM pg_seclabels
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WHERE provider = 'selinux' AND objtype = 'table' AND objname in ('t1', 't2', 't3');
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SELECT objtype, objname, label FROM pg_seclabels
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WHERE provider = 'selinux' AND objtype = 'column' AND (objname like 't3.%' OR objname like 't4.%');
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--
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-- Tests for SECURITY LABEL
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--
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-- @SECURITY-CONTEXT=unconfined_u:unconfined_r:sepgsql_regtest_dba_t:s0
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SECURITY LABEL ON TABLE t1
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IS 'system_u:object_r:sepgsql_ro_table_t:s0'; -- ok
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SECURITY LABEL ON TABLE t2
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IS 'invalid security context'; -- be failed
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SECURITY LABEL ON COLUMN t2
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IS 'system_u:object_r:sepgsql_ro_table_t:s0'; -- be failed
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SECURITY LABEL ON COLUMN t2.b
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IS 'system_u:object_r:sepgsql_ro_table_t:s0'; -- ok
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--
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-- Tests for Trusted Procedures
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--
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-- @SECURITY-CONTEXT=unconfined_u:unconfined_r:sepgsql_regtest_user_t:s0
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SET sepgsql.debug_audit = true;
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SET client_min_messages = log;
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SELECT f1(); -- normal procedure
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SELECT f2(); -- trusted procedure
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SELECT f3(); -- trusted procedure that raises an error
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SELECT f4(); -- failed on domain transition
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SELECT sepgsql_getcon(); -- client's label must be restored
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--
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-- Test for Dynamic Domain Transition
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--
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-- validation of transaction aware dynamic-transition
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-- @SECURITY-CONTEXT=unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c25
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SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c15');
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SELECT sepgsql_getcon();
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SELECT sepgsql_setcon(NULL); -- failed to reset
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SELECT sepgsql_getcon();
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BEGIN;
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SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c12');
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SELECT sepgsql_getcon();
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SAVEPOINT svpt_1;
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SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c9');
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SELECT sepgsql_getcon();
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SAVEPOINT svpt_2;
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SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c6');
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SELECT sepgsql_getcon();
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SAVEPOINT svpt_3;
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SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c3');
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SELECT sepgsql_getcon();
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ROLLBACK TO SAVEPOINT svpt_2;
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SELECT sepgsql_getcon(); -- should be 's0:c0.c9'
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ROLLBACK TO SAVEPOINT svpt_1;
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SELECT sepgsql_getcon(); -- should be 's0:c0.c12'
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ABORT;
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SELECT sepgsql_getcon(); -- should be 's0:c0.c15'
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BEGIN;
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SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c8');
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SELECT sepgsql_getcon();
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SAVEPOINT svpt_1;
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SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c4');
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SELECT sepgsql_getcon();
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ROLLBACK TO SAVEPOINT svpt_1;
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SELECT sepgsql_getcon(); -- should be 's0:c0.c8'
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SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c6');
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COMMIT;
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SELECT sepgsql_getcon(); -- should be 's0:c0.c6'
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-- sepgsql_regtest_user_t is not available dynamic-transition,
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-- unless sepgsql_setcon() is called inside of trusted-procedure
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-- @SECURITY-CONTEXT=unconfined_u:unconfined_r:sepgsql_regtest_user_t:s0:c0.c15
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-- sepgsql_regtest_user_t has no permission to switch current label
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SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_user_t:s0'); -- failed
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SELECT sepgsql_getcon();
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-- trusted procedure allows to switch, but unavailable to override MCS rules
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SELECT f5('unconfined_u:unconfined_r:sepgsql_regtest_user_t:s0:c0.c7'); -- OK
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SELECT sepgsql_getcon();
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SELECT f5('unconfined_u:unconfined_r:sepgsql_regtest_user_t:s0:c0.c31'); -- Failed
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SELECT sepgsql_getcon();
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SELECT f5(NULL); -- Failed
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SELECT sepgsql_getcon();
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BEGIN;
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SELECT f5('unconfined_u:unconfined_r:sepgsql_regtest_user_t:s0:c0.c3'); -- OK
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SELECT sepgsql_getcon();
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ABORT;
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SELECT sepgsql_getcon();
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--
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-- Test for simulation of typical connection pooling server
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--
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-- @SECURITY-CONTEXT=unconfined_u:unconfined_r:sepgsql_regtest_pool_t:s0
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-- we shouldn't allow to switch client label without trusted procedure
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SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_foo_t:s0');
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SELECT * FROM auth_tbl; -- failed, no permission to reference
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-- switch to "foo"
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SELECT auth_func('foo', 'acbd18db4cc2f85cedef654fccc4a4d8');
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SELECT sepgsql_getcon();
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SELECT * FROM foo_tbl; -- OK
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SELECT * FROM var_tbl; -- failed
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SELECT * FROM auth_tbl; -- failed
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SELECT sepgsql_setcon(NULL); -- end of session
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SELECT sepgsql_getcon();
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-- the pooler cannot touch these tables directly
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SELECT * FROM foo_tbl; -- failed
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SELECT * FROM var_tbl; -- failed
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-- switch to "var"
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SELECT auth_func('var', 'b2145aac704ce76dbe1ac7adac535b23');
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SELECT sepgsql_getcon();
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SELECT * FROM foo_tbl; -- failed
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SELECT * FROM var_tbl; -- OK
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SELECT * FROM auth_tbl; -- failed
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SELECT sepgsql_setcon(NULL); -- end of session
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-- misc checks
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SELECT auth_func('var', 'invalid credential'); -- not works
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SELECT sepgsql_getcon();
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--
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-- Clean up
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--
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-- @SECURITY-CONTEXT=unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0-s0:c0.c255
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DROP TABLE IF EXISTS t1 CASCADE;
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DROP TABLE IF EXISTS t2 CASCADE;
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DROP TABLE IF EXISTS t3 CASCADE;
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DROP TABLE IF EXISTS t4 CASCADE;
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DROP FUNCTION IF EXISTS f1() CASCADE;
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DROP FUNCTION IF EXISTS f2() CASCADE;
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DROP FUNCTION IF EXISTS f3() CASCADE;
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DROP FUNCTION IF EXISTS f4() CASCADE;
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DROP FUNCTION IF EXISTS f5(text) CASCADE;
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