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06bf59ad33
context.
Routine arguments were evaluated in the security context of the routine
itself, not in the caller's context.
The bug is fixed the following way:
- Item_func_sp::find_and_check_access() has been split into two
functions: Item_func_sp::find_and_check_access() itself only
finds the function and check that the caller have EXECUTE privilege
on it. New function set_routine_security_ctx() changes security
context for SUID routines and checks that definer have EXECUTE
privilege too.
- new function sp_head::execute_trigger() is called from
Table_triggers_list::process_triggers() instead of
sp_head::execute_function(), and is effectively just as the
sp_head::execute_function() is, with all non-trigger related code
removed, and added trigger-specific security context switch.
- call to Item_func_sp::find_and_check_access() stays outside
of sp_head::execute_function(), and there is a code in
sql_parse.cc before the call to sp_head::execute_procedure() that
checks that the caller have EXECUTE privilege, but both
sp_head::execute_function() and sp_head::execute_procedure() call
set_routine_security_ctx() after evaluating their parameters,
and restore the context after the body is executed.
mysql-test/r/sp-security.result:
Add test case for bug#18630: Arguments of suid routine calculated
in wrong security context.
mysql-test/t/sp-security.test:
Add result for bug#18630: Arguments of suid routine calculated
in wrong security context.
sql/item_func.cc:
Do not change security context before executing the function, as it
will be changed after argument evaluation.
Do not change security context in Item_func_sp::find_and_check_access().
sql/item_func.h:
Change prototype for Item_func_sp::find_and_check_access().
sql/sp_head.cc:
Add set_routine_security_ctx() function.
Add sp_head::execute_trigger() method.
Change security context in sp_head::execute_trigger(), and in
sp_head::execute_function() and sp_head::execute_procedure()
after argument evaluation.
Move pop_all_cursors() call to sp_head::execute().
sql/sp_head.h:
Add declaration for sp_head::execute_trigger() and
set_routine_security_ctx().
sql/sql_parse.cc:
Do not change security context before executing the procedure, as it
will be changed after argument evaluation.
sql/sql_trigger.cc:
Call new sp_head::execute_trigger() instead of
sp_head::execute_function(), which is responsible to switch
security context.
506 lines
17 KiB
Plaintext
506 lines
17 KiB
Plaintext
use test;
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grant usage on *.* to user1@localhost;
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flush privileges;
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drop table if exists t1;
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drop database if exists db1_secret;
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create database db1_secret;
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create procedure db1_secret.dummy() begin end;
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drop procedure db1_secret.dummy;
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use db1_secret;
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create table t1 ( u varchar(64), i int );
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create procedure stamp(i int)
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insert into db1_secret.t1 values (user(), i);
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show procedure status like 'stamp';
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Db Name Type Definer Modified Created Security_type Comment
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db1_secret stamp PROCEDURE root@localhost 0000-00-00 00:00:00 0000-00-00 00:00:00 DEFINER
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create function db() returns varchar(64) return database();
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show function status like 'db';
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Db Name Type Definer Modified Created Security_type Comment
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db1_secret db FUNCTION root@localhost 0000-00-00 00:00:00 0000-00-00 00:00:00 DEFINER
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call stamp(1);
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select * from t1;
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u i
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root@localhost 1
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select db();
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db()
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db1_secret
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grant execute on procedure db1_secret.stamp to user1@'%';
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grant execute on function db1_secret.db to user1@'%';
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grant execute on procedure db1_secret.stamp to ''@'%';
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grant execute on function db1_secret.db to ''@'%';
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call db1_secret.stamp(2);
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select db1_secret.db();
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db1_secret.db()
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db1_secret
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select * from db1_secret.t1;
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ERROR 42000: SELECT command denied to user 'user1'@'localhost' for table 't1'
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create procedure db1_secret.dummy() begin end;
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ERROR 42000: Access denied for user 'user1'@'localhost' to database 'db1_secret'
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drop procedure db1_secret.dummy;
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ERROR 42000: PROCEDURE db1_secret.dummy does not exist
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call db1_secret.stamp(3);
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select db1_secret.db();
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db1_secret.db()
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db1_secret
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select * from db1_secret.t1;
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ERROR 42000: SELECT command denied to user ''@'localhost' for table 't1'
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create procedure db1_secret.dummy() begin end;
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ERROR 42000: Access denied for user ''@'localhost' to database 'db1_secret'
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drop procedure db1_secret.dummy;
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ERROR 42000: PROCEDURE db1_secret.dummy does not exist
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select * from t1;
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u i
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root@localhost 1
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user1@localhost 2
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anon@localhost 3
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alter procedure stamp sql security invoker;
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show procedure status like 'stamp';
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Db Name Type Definer Modified Created Security_type Comment
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db1_secret stamp PROCEDURE root@localhost 0000-00-00 00:00:00 0000-00-00 00:00:00 INVOKER
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alter function db sql security invoker;
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show function status like 'db';
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Db Name Type Definer Modified Created Security_type Comment
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db1_secret db FUNCTION root@localhost 0000-00-00 00:00:00 0000-00-00 00:00:00 INVOKER
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call stamp(4);
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select * from t1;
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u i
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root@localhost 1
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user1@localhost 2
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anon@localhost 3
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root@localhost 4
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select db();
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db()
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db1_secret
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call db1_secret.stamp(5);
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ERROR 42000: Access denied for user 'user1'@'localhost' to database 'db1_secret'
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select db1_secret.db();
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ERROR 42000: Access denied for user 'user1'@'localhost' to database 'db1_secret'
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call db1_secret.stamp(6);
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ERROR 42000: Access denied for user ''@'localhost' to database 'db1_secret'
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select db1_secret.db();
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ERROR 42000: Access denied for user ''@'localhost' to database 'db1_secret'
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drop database if exists db2;
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create database db2;
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use db2;
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create table t2 (s1 int);
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insert into t2 values (0);
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grant usage on db2.* to user1@localhost;
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grant select on db2.* to user1@localhost;
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grant usage on db2.* to user2@localhost;
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grant select,insert,update,delete,create routine on db2.* to user2@localhost;
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grant create routine on db2.* to user1@localhost;
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flush privileges;
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use db2;
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create procedure p () insert into t2 values (1);
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call p();
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ERROR 42000: INSERT command denied to user 'user1'@'localhost' for table 't2'
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use db2;
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call p();
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ERROR 42000: execute command denied to user 'user2'@'localhost' for routine 'db2.p'
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select * from t2;
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s1
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0
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create procedure q () insert into t2 values (2);
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call q();
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select * from t2;
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s1
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0
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2
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grant usage on procedure db2.q to user2@localhost with grant option;
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grant execute on procedure db2.q to user1@localhost;
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use db2;
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call q();
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select * from t2;
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s1
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0
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2
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2
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alter procedure p modifies sql data;
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drop procedure p;
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alter procedure q modifies sql data;
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ERROR 42000: alter routine command denied to user 'user1'@'localhost' for routine 'db2.q'
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drop procedure q;
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ERROR 42000: alter routine command denied to user 'user1'@'localhost' for routine 'db2.q'
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use db2;
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alter procedure q modifies sql data;
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drop procedure q;
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use test;
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select type,db,name from mysql.proc;
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type db name
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FUNCTION db1_secret db
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PROCEDURE db1_secret stamp
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drop database db1_secret;
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drop database db2;
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select type,db,name from mysql.proc;
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type db name
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delete from mysql.user where user='user1' or user='user2';
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delete from mysql.user where user='' and host='%';
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delete from mysql.procs_priv where user='user1' or user='user2';
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delete from mysql.procs_priv where user='' and host='%';
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delete from mysql.db where user='user2';
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flush privileges;
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grant usage on *.* to usera@localhost;
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grant usage on *.* to userb@localhost;
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grant usage on *.* to userc@localhost;
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create database sptest;
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create table t1 ( u varchar(64), i int );
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create procedure sptest.p1(i int) insert into test.t1 values (user(), i);
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grant insert on t1 to usera@localhost;
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grant execute on procedure sptest.p1 to usera@localhost;
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show grants for usera@localhost;
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Grants for usera@localhost
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GRANT USAGE ON *.* TO 'usera'@'localhost'
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GRANT INSERT ON `test`.`t1` TO 'usera'@'localhost'
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GRANT EXECUTE ON PROCEDURE `sptest`.`p1` TO 'usera'@'localhost'
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grant execute on procedure sptest.p1 to userc@localhost with grant option;
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show grants for userc@localhost;
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Grants for userc@localhost
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GRANT USAGE ON *.* TO 'userc'@'localhost'
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GRANT EXECUTE ON PROCEDURE `sptest`.`p1` TO 'userc'@'localhost' WITH GRANT OPTION
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call sptest.p1(1);
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grant execute on procedure sptest.p1 to userb@localhost;
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ERROR 42000: grant command denied to user 'usera'@'localhost' for routine 'sptest.p1'
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drop procedure sptest.p1;
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ERROR 42000: alter routine command denied to user 'usera'@'localhost' for routine 'sptest.p1'
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call sptest.p1(2);
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ERROR 42000: execute command denied to user 'userb'@'localhost' for routine 'sptest.p1'
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grant execute on procedure sptest.p1 to userb@localhost;
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ERROR 42000: execute command denied to user 'userb'@'localhost' for routine 'sptest.p1'
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drop procedure sptest.p1;
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ERROR 42000: alter routine command denied to user 'userb'@'localhost' for routine 'sptest.p1'
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call sptest.p1(3);
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grant execute on procedure sptest.p1 to userb@localhost;
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drop procedure sptest.p1;
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ERROR 42000: alter routine command denied to user 'userc'@'localhost' for routine 'sptest.p1'
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call sptest.p1(4);
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grant execute on procedure sptest.p1 to userb@localhost;
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ERROR 42000: grant command denied to user 'userb'@'localhost' for routine 'sptest.p1'
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drop procedure sptest.p1;
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ERROR 42000: alter routine command denied to user 'userb'@'localhost' for routine 'sptest.p1'
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select * from t1;
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u i
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usera@localhost 1
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userc@localhost 3
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userb@localhost 4
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grant all privileges on procedure sptest.p1 to userc@localhost;
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show grants for userc@localhost;
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Grants for userc@localhost
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GRANT USAGE ON *.* TO 'userc'@'localhost'
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GRANT EXECUTE, ALTER ROUTINE ON PROCEDURE `sptest`.`p1` TO 'userc'@'localhost' WITH GRANT OPTION
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show grants for userb@localhost;
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Grants for userb@localhost
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GRANT USAGE ON *.* TO 'userb'@'localhost'
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GRANT EXECUTE ON PROCEDURE `sptest`.`p1` TO 'userb'@'localhost'
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revoke all privileges on procedure sptest.p1 from userb@localhost;
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show grants for userb@localhost;
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Grants for userb@localhost
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GRANT USAGE ON *.* TO 'userb'@'localhost'
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use test;
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drop database sptest;
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delete from mysql.user where user='usera' or user='userb' or user='userc';
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delete from mysql.procs_priv where user='usera' or user='userb' or user='userc';
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delete from mysql.tables_priv where user='usera';
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flush privileges;
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drop table t1;
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drop function if exists bug_9503;
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create database mysqltest//
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use mysqltest//
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create table t1 (s1 int)//
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grant select on t1 to user1@localhost//
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create function bug_9503 () returns int sql security invoker begin declare v int;
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select min(s1) into v from t1; return v; end//
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use mysqltest;
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select bug_9503();
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ERROR 42000: execute command denied to user 'user1'@'localhost' for routine 'mysqltest.bug_9503'
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grant execute on function bug_9503 to user1@localhost;
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do 1;
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use test;
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REVOKE ALL PRIVILEGES, GRANT OPTION FROM user1@localhost;
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drop function bug_9503;
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use test;
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drop database mysqltest;
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use test;
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select current_user();
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current_user()
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root@localhost
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select user();
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user()
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root@localhost
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create procedure bug7291_0 () sql security invoker select current_user(), user();
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create procedure bug7291_1 () sql security definer call bug7291_0();
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create procedure bug7291_2 () sql security invoker call bug7291_0();
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grant execute on procedure bug7291_0 to user1@localhost;
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grant execute on procedure bug7291_1 to user1@localhost;
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grant execute on procedure bug7291_2 to user1@localhost;
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call bug7291_2();
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current_user() user()
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user1@localhost user1@localhost
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call bug7291_1();
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current_user() user()
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root@localhost user1@localhost
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drop procedure bug7291_1;
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drop procedure bug7291_2;
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drop procedure bug7291_0;
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REVOKE ALL PRIVILEGES, GRANT OPTION FROM user1@localhost;
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drop user user1@localhost;
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drop database if exists mysqltest_1;
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create database mysqltest_1;
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create procedure mysqltest_1.p1()
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begin
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select 1 from dual;
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end//
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grant usage on *.* to mysqltest_1@localhost;
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call mysqltest_1.p1();
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ERROR 42000: execute command denied to user 'mysqltest_1'@'localhost' for routine 'mysqltest_1.p1'
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call mysqltest_1.p1();
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ERROR 42000: execute command denied to user 'mysqltest_1'@'localhost' for routine 'mysqltest_1.p1'
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drop procedure mysqltest_1.p1;
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drop database mysqltest_1;
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revoke usage on *.* from mysqltest_1@localhost;
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drop user mysqltest_1@localhost;
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drop function if exists bug12812|
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create function bug12812() returns char(2)
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begin
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return 'ok';
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end;
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create user user_bug12812@localhost IDENTIFIED BY 'ABC'|
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SELECT test.bug12812()|
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ERROR 42000: execute command denied to user 'user_bug12812'@'localhost' for routine 'test.bug12812'
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CREATE VIEW v1 AS SELECT test.bug12812()|
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ERROR 42000: execute command denied to user 'user_bug12812'@'localhost' for routine 'test.bug12812'
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DROP USER user_bug12812@localhost|
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drop function bug12812|
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create database db_bug14834;
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create user user1_bug14834@localhost identified by '';
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grant all on `db\_bug14834`.* to user1_bug14834@localhost;
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create user user2_bug14834@localhost identified by '';
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grant all on `db\_bug14834`.* to user2_bug14834@localhost;
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create user user3_bug14834@localhost identified by '';
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grant all on `db__ug14834`.* to user3_bug14834@localhost;
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create procedure p_bug14834() select user(), current_user();
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call p_bug14834();
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user() current_user()
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user1_bug14834@localhost user1_bug14834@localhost
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call p_bug14834();
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user() current_user()
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user2_bug14834@localhost user1_bug14834@localhost
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call p_bug14834();
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user() current_user()
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user3_bug14834@localhost user1_bug14834@localhost
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drop user user1_bug14834@localhost;
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drop user user2_bug14834@localhost;
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drop user user3_bug14834@localhost;
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drop database db_bug14834;
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create database db_bug14533;
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use db_bug14533;
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create table t1 (id int);
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create user user_bug14533@localhost identified by '';
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create procedure bug14533_1()
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sql security definer
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desc db_bug14533.t1;
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create procedure bug14533_2()
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sql security definer
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select * from db_bug14533.t1;
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grant execute on procedure db_bug14533.bug14533_1 to user_bug14533@localhost;
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grant execute on procedure db_bug14533.bug14533_2 to user_bug14533@localhost;
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call db_bug14533.bug14533_1();
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Field Type Null Key Default Extra
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id int(11) YES NULL
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call db_bug14533.bug14533_2();
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id
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desc db_bug14533.t1;
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ERROR 42000: SELECT command denied to user 'user_bug14533'@'localhost' for table 't1'
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select * from db_bug14533.t1;
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ERROR 42000: SELECT command denied to user 'user_bug14533'@'localhost' for table 't1'
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drop user user_bug14533@localhost;
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drop database db_bug14533;
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CREATE DATABASE db_bug7787;
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use db_bug7787;
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CREATE PROCEDURE p1()
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SHOW INNODB STATUS;
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Warnings:
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Warning 1287 'SHOW INNODB STATUS' is deprecated; use 'SHOW ENGINE INNODB STATUS' instead
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GRANT EXECUTE ON PROCEDURE p1 TO user_bug7787@localhost;
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DROP DATABASE db_bug7787;
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drop user user_bug7787@localhost;
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use test;
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---> connection: root
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DROP DATABASE IF EXISTS mysqltest;
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CREATE DATABASE mysqltest;
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CREATE USER mysqltest_1@localhost;
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GRANT ALL PRIVILEGES ON mysqltest.* TO mysqltest_1@localhost;
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CREATE USER mysqltest_2@localhost;
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GRANT SUPER ON *.* TO mysqltest_2@localhost;
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GRANT ALL PRIVILEGES ON mysqltest.* TO mysqltest_2@localhost;
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---> connection: mysqltest_2_con
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use mysqltest;
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CREATE PROCEDURE wl2897_p1() SELECT 1;
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CREATE FUNCTION wl2897_f1() RETURNS INT RETURN 1;
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---> connection: mysqltest_1_con
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use mysqltest;
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CREATE DEFINER=root@localhost PROCEDURE wl2897_p2() SELECT 2;
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ERROR 42000: Access denied; you need the SUPER privilege for this operation
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CREATE DEFINER=root@localhost FUNCTION wl2897_f2() RETURNS INT RETURN 2;
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ERROR 42000: Access denied; you need the SUPER privilege for this operation
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---> connection: mysqltest_2_con
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use mysqltest;
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CREATE DEFINER='a @ b @ c'@localhost PROCEDURE wl2897_p3() SELECT 3;
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Warnings:
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Note 1449 There is no 'a @ b @ c'@'localhost' registered
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CREATE DEFINER='a @ b @ c'@localhost FUNCTION wl2897_f3() RETURNS INT RETURN 3;
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Warnings:
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Note 1449 There is no 'a @ b @ c'@'localhost' registered
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---> connection: con1root
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use mysqltest;
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SHOW CREATE PROCEDURE wl2897_p1;
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Procedure sql_mode Create Procedure
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wl2897_p1 CREATE DEFINER=`mysqltest_2`@`localhost` PROCEDURE `wl2897_p1`()
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SELECT 1
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SHOW CREATE PROCEDURE wl2897_p3;
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Procedure sql_mode Create Procedure
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wl2897_p3 CREATE DEFINER=`a @ b @ c`@`localhost` PROCEDURE `wl2897_p3`()
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SELECT 3
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SHOW CREATE FUNCTION wl2897_f1;
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Function sql_mode Create Function
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wl2897_f1 CREATE DEFINER=`mysqltest_2`@`localhost` FUNCTION `wl2897_f1`() RETURNS int(11)
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RETURN 1
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SHOW CREATE FUNCTION wl2897_f3;
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Function sql_mode Create Function
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wl2897_f3 CREATE DEFINER=`a @ b @ c`@`localhost` FUNCTION `wl2897_f3`() RETURNS int(11)
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RETURN 3
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DROP USER mysqltest_1@localhost;
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DROP USER mysqltest_2@localhost;
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DROP DATABASE mysqltest;
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---> connection: root
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DROP DATABASE IF EXISTS mysqltest;
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CREATE DATABASE mysqltest;
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CREATE USER mysqltest_1@localhost;
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GRANT ALL PRIVILEGES ON mysqltest.* TO mysqltest_1@localhost;
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CREATE USER mysqltest_2@localhost;
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GRANT ALL PRIVILEGES ON mysqltest.* TO mysqltest_2@localhost;
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---> connection: mysqltest_1_con
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use mysqltest;
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CREATE PROCEDURE bug13198_p1()
|
|
SELECT 1;
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|
CREATE FUNCTION bug13198_f1() RETURNS INT
|
|
RETURN 1;
|
|
CALL bug13198_p1();
|
|
1
|
|
1
|
|
SELECT bug13198_f1();
|
|
bug13198_f1()
|
|
1
|
|
|
|
---> connection: mysqltest_2_con
|
|
use mysqltest;
|
|
CALL bug13198_p1();
|
|
1
|
|
1
|
|
SELECT bug13198_f1();
|
|
bug13198_f1()
|
|
1
|
|
|
|
---> connection: root
|
|
DROP USER mysqltest_1@localhost;
|
|
|
|
---> connection: mysqltest_2_con
|
|
use mysqltest;
|
|
CALL bug13198_p1();
|
|
ERROR HY000: There is no 'mysqltest_1'@'localhost' registered
|
|
SELECT bug13198_f1();
|
|
ERROR HY000: There is no 'mysqltest_1'@'localhost' registered
|
|
|
|
---> connection: root
|
|
DROP USER mysqltest_2@localhost;
|
|
DROP DATABASE mysqltest;
|
|
GRANT USAGE ON *.* TO user19857@localhost IDENTIFIED BY 'meow';
|
|
GRANT SELECT, INSERT, UPDATE, DELETE, CREATE ROUTINE, ALTER ROUTINE ON test.* TO
|
|
user19857@localhost;
|
|
SELECT Host,User,Password FROM mysql.user WHERE User='user19857';
|
|
Host User Password
|
|
localhost user19857 *82DC221D557298F6CE9961037DB1C90604792F5C
|
|
|
|
---> connection: mysqltest_2_con
|
|
use test;
|
|
CREATE PROCEDURE sp19857() DETERMINISTIC
|
|
BEGIN
|
|
DECLARE a INT;
|
|
SET a=1;
|
|
SELECT a;
|
|
END //
|
|
SHOW CREATE PROCEDURE test.sp19857;
|
|
Procedure sql_mode Create Procedure
|
|
sp19857 CREATE DEFINER=`user19857`@`localhost` PROCEDURE `sp19857`()
|
|
DETERMINISTIC
|
|
BEGIN
|
|
DECLARE a INT;
|
|
SET a=1;
|
|
SELECT a;
|
|
END
|
|
DROP PROCEDURE IF EXISTS test.sp19857;
|
|
|
|
---> connection: root
|
|
SELECT Host,User,Password FROM mysql.user WHERE User='user19857';
|
|
Host User Password
|
|
localhost user19857 *82DC221D557298F6CE9961037DB1C90604792F5C
|
|
DROP USER user19857@localhost;
|
|
DROP TABLE IF EXISTS t1;
|
|
DROP VIEW IF EXISTS v1;
|
|
DROP FUNCTION IF EXISTS f_suid;
|
|
DROP PROCEDURE IF EXISTS p_suid;
|
|
DROP FUNCTION IF EXISTS f_evil;
|
|
DELETE FROM mysql.user WHERE user LIKE 'mysqltest\_%';
|
|
DELETE FROM mysql.db WHERE user LIKE 'mysqltest\_%';
|
|
DELETE FROM mysql.tables_priv WHERE user LIKE 'mysqltest\_%';
|
|
DELETE FROM mysql.columns_priv WHERE user LIKE 'mysqltest\_%';
|
|
FLUSH PRIVILEGES;
|
|
CREATE TABLE t1 (i INT);
|
|
CREATE FUNCTION f_suid(i INT) RETURNS INT SQL SECURITY DEFINER RETURN 0;
|
|
CREATE PROCEDURE p_suid(IN i INT) SQL SECURITY DEFINER SET @c:= 0;
|
|
CREATE USER mysqltest_u1@localhost;
|
|
GRANT EXECUTE ON test.* TO mysqltest_u1@localhost;
|
|
CREATE DEFINER=mysqltest_u1@localhost FUNCTION f_evil () RETURNS INT
|
|
SQL SECURITY INVOKER
|
|
BEGIN
|
|
SET @a:= CURRENT_USER();
|
|
SET @b:= (SELECT COUNT(*) FROM t1);
|
|
RETURN @b;
|
|
END|
|
|
CREATE SQL SECURITY INVOKER VIEW v1 AS SELECT f_evil();
|
|
SELECT COUNT(*) FROM t1;
|
|
ERROR 42000: SELECT command denied to user 'mysqltest_u1'@'localhost' for table 't1'
|
|
SELECT f_evil();
|
|
ERROR 42000: SELECT command denied to user 'mysqltest_u1'@'localhost' for table 't1'
|
|
SELECT @a, @b;
|
|
@a @b
|
|
mysqltest_u1@localhost NULL
|
|
SELECT f_suid(f_evil());
|
|
ERROR 42000: SELECT command denied to user 'mysqltest_u1'@'localhost' for table 't1'
|
|
SELECT @a, @b;
|
|
@a @b
|
|
mysqltest_u1@localhost NULL
|
|
CALL p_suid(f_evil());
|
|
ERROR 42000: SELECT command denied to user 'mysqltest_u1'@'localhost' for table 't1'
|
|
SELECT @a, @b;
|
|
@a @b
|
|
mysqltest_u1@localhost NULL
|
|
SELECT * FROM v1;
|
|
ERROR 42000: SELECT command denied to user 'mysqltest_u1'@'localhost' for table 'v1'
|
|
SELECT @a, @b;
|
|
@a @b
|
|
mysqltest_u1@localhost NULL
|
|
DROP VIEW v1;
|
|
DROP FUNCTION f_evil;
|
|
DROP USER mysqltest_u1@localhost;
|
|
DROP PROCEDURE p_suid;
|
|
DROP FUNCTION f_suid;
|
|
DROP TABLE t1;
|
|
End of 5.0 tests.
|