MySQL存储过程权限检查主要点
一、权限相关:1.修改sqlsecuritySql代码ALTERPROCEDUREwwwSQLSECURITYINVOKER;ALTERPROCEDUREwwwSQLSECURI..
一、权限相关:
1.修改sql security
Sql代码
ALTER PROCEDURE www SQL SECURITY INVOKER ;
ALTER PROCEDURE www SQL SECURITY DEFINER ;
(1)MySQL存储过程是通过指定SQL SECURITY子句指定执行存储过程的实际用户;
(2)如果SQL SECURITY子句指定为DEFINER,存储过程将使用存储过程的DEFINER执行存储过程,验证调用存储过程的用户是否具有存储过程的execute权限和DEFINER用户是否具有存储过程引用的相关对象的权限;
(3)如果SQL SECURITY子句指定为INVOKER,那么MySQL将使用当前调用存储过程的用户执行此过程,香港服务器,并验证用户是否具有存储过程的execute权限和存储过程引用的相关对象的权限;
(4)如果不显示的指定SQL SECURITY子句,MySQL默认将以DEFINER执行存储过程。
3.执行存储过程授权
Sql代码
GRANT EXECUTE ON PROCEDURE test.* TO 'wtc'@'%';
GRANT CREATE ROUTINE,ALTER ROUTINE, SELECT,CREATE, INSERT, UPDATE, DELETE, EXECUTE ON test.* TO 'wtc'@'%' IDENTIFIED BY '111111'
CREATE ROUTINE : 创建存储过程的权限
ALTER ROUTINE : 修改存储过程的权限
二、实验:
session 1:
mysql> show grants for ly@'%';
| Grants for ly@%
| GRANT USAGE ON *.* TO 'ly'@'%' IDENTIFIED BY PASSWORD '*23AE809DDACAF96AF0FD78ED04B6A265E05AA257'
mysql> show create procedure hhl.pr_param_in\G
*************************** 1. row ***************************
Procedure: pr_param_in
sql_mode:
Create Procedure: CREATE DEFINER=`root`@`localhost` PROCEDURE `pr_param_in`(
in id int
)
SQL SECURITY DEFINER
begin
INSERT INTO hhl.t VALUES(1,'hhl');
end
character_set_client: latin1
collation_connection: latin1_swedish_ci
Database Collation: utf8_general_ci
1 row in set (0.00 sec)
grant execute on procedure hhl.pr_param_in to 'ly'@'%';
session 2:
mysql -uly -p123 -h 1.1.1.5
mysql> call hhl.pr_param_in(1);
Query OK, 1 row affected (0.00 sec)
上面 SQL SECURITY=DEFINER,ly 用户调用存储过程是以DEFINER=`root`@`localhost`,服务器空间,虚拟主机,即检查调用者ly是否具有存储过程的execute权限和DEFINER用户(`root`@`localhost`)是否具有存储过程引用的相关对象的权限.
*如果SQL SECURITY =INVOKER
session 1 :
mysql> ALTER PROCEDURE hhl.pr_param_in SQL SECURITY INVOKER;
Query OK, 0 rows affected (0.00 sec)
mysql> show create procedure hhl.pr_param_in\G
*************************** 1. row ***************************
Procedure: pr_param_in
sql_mode:
Create Procedure: CREATE DEFINER=`root`@`localhost` PROCEDURE `pr_param_in`(
in id int
)
SQL SECURITY INVOKER
begin
INSERT INTO hhl.t VALUES(1,'hhl');
end
character_set_client: latin1
collation_connection: latin1_swedish_ci
Database Collation: utf8_general_ci
1 row in set (0.00 sec)
session 2 :
mysql> call hhl.pr_param_in(1);
ERROR 1142 (42000): INSERT command denied to user 'ly'@'node5' for table 't'
上面 SQL SECURITY=INVOKER,ly 用户调用存储过程,即检查ly是否具有存储过程的execute权限和是否有存储过程引用的相关对象的权限. ly 用户确实没有对 hhl 库下的t 表insert权限。
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