【弱密码】MySQL8-Connection_control-plugin

概述：MySQL 的连接控制插件的使用与相关配置设置(windows)。参考文档见文末。

相关文章：

安装插件

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INSTALL PLUGIN CONNECTION_CONTROL
  SONAME 'connection_control.so';
INSTALL PLUGIN CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS
  SONAME 'connection_control.so';

修改配置文件

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[mysqld]
plugin-load-add=connection_control.so

查看连接配置

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show variables like 'connection_control%';

+-------------------------------------------------+------------+
| Variable_name                                   | Value      |
+-------------------------------------------------+------------+
| connection_control_failed_connections_threshold | 3          |
| connection_control_max_connection_delay         | 2147483647 |
| connection_control_min_connection_delay         | 1000       |
+-------------------------------------------------+------------+

修改启动配置文件

如果已经安装注册了插件，为避免每次启动都需要设置参数，可以在配置文件中添加相关配置项。

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[mysqld]
plugin-load-add=connection_control.so
connection-control=FORCE_PLUS_PERMANENT
connection-control-failed-login-attempts=FORCE_PLUS_PERMANENT

设置连接尝试次数

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CREATE USER 'u1'@'localhost' IDENTIFIED BY 'password'
  FAILED_LOGIN_ATTEMPTS 3 PASSWORD_LOCK_TIME 3;

ALTER USER 'u2'@'localhost'
  FAILED_LOGIN_ATTEMPTS 4 PASSWORD_LOCK_TIME UNBOUNDED;

登录时候后就会有如下提示（重启mysql服务可解除锁定）,目前已知的是虽然 mysql 命令行登录 和 mysql::mysql_real_connect 使用的是不同接口，但是触发策略最终的接口是同一个，都会触发防爆破策略。

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C:\mysql-8.1.0-winx64\bin>mysql -ucspweak2 -padmin123
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 3955 (HY000): Access denied for user 'cspweak2'@'localhost'. Account is blocked for 3 day(s) (3 day(s) remaining) due to 3 consecutive failed logins.

补充一个暴力登录的脚本

【批处理】MySQL 登录

查看登录失败的用户

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mysql> select * from INFORMATION_SCHEMA.CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS;
+--------------------+-----------------+
| USERHOST           | FAILED_ATTEMPTS |
+--------------------+-----------------+
| 'root'@'localhost' |               9 |
+--------------------+-----------------+
1 row in set (0.00 sec)

其他补充

用户表字段

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+--------------------------+-----------------------------------+------+-----+-----------------------+-------+
| Field                    | Type                              | Null | Key | Default               | Extra |
+--------------------------+-----------------------------------+------+-----+-----------------------+-------+
| Host                     | char(255)                         | NO   | PRI |                       |       |
| User                     | char(32)                          | NO   | PRI |                       |       |
| Select_priv              | enum('N','Y')                     | NO   |     | N                     |       |
| Insert_priv              | enum('N','Y')                     | NO   |     | N                     |       |
| Update_priv              | enum('N','Y')                     | NO   |     | N                     |       |
| Delete_priv              | enum('N','Y')                     | NO   |     | N                     |       |
| Create_priv              | enum('N','Y')                     | NO   |     | N                     |       |
| Drop_priv                | enum('N','Y')                     | NO   |     | N                     |       |
| Reload_priv              | enum('N','Y')                     | NO   |     | N                     |       |
| Shutdown_priv            | enum('N','Y')                     | NO   |     | N                     |       |
| Process_priv             | enum('N','Y')                     | NO   |     | N                     |       |
| File_priv                | enum('N','Y')                     | NO   |     | N                     |       |
| Grant_priv               | enum('N','Y')                     | NO   |     | N                     |       |
| References_priv          | enum('N','Y')                     | NO   |     | N                     |       |
| Index_priv               | enum('N','Y')                     | NO   |     | N                     |       |
| Alter_priv               | enum('N','Y')                     | NO   |     | N                     |       |
| Show_db_priv             | enum('N','Y')                     | NO   |     | N                     |       |
| Super_priv               | enum('N','Y')                     | NO   |     | N                     |       |
| Create_tmp_table_priv    | enum('N','Y')                     | NO   |     | N                     |       |
| Lock_tables_priv         | enum('N','Y')                     | NO   |     | N                     |       |
| Execute_priv             | enum('N','Y')                     | NO   |     | N                     |       |
| Repl_slave_priv          | enum('N','Y')                     | NO   |     | N                     |       |
| Repl_client_priv         | enum('N','Y')                     | NO   |     | N                     |       |
| Create_view_priv         | enum('N','Y')                     | NO   |     | N                     |       |
| Show_view_priv           | enum('N','Y')                     | NO   |     | N                     |       |
| Create_routine_priv      | enum('N','Y')                     | NO   |     | N                     |       |
| Alter_routine_priv       | enum('N','Y')                     | NO   |     | N                     |       |
| Create_user_priv         | enum('N','Y')                     | NO   |     | N                     |       |
| Event_priv               | enum('N','Y')                     | NO   |     | N                     |       |
| Trigger_priv             | enum('N','Y')                     | NO   |     | N                     |       |
| Create_tablespace_priv   | enum('N','Y')                     | NO   |     | N                     |       |
| ssl_type                 | enum('','ANY','X509','SPECIFIED') | NO   |     |                       |       |
| ssl_cipher               | blob                              | NO   |     | NULL                  |       |
| x509_issuer              | blob                              | NO   |     | NULL                  |       |
| x509_subject             | blob                              | NO   |     | NULL                  |       |
| max_questions            | int unsigned                      | NO   |     | 0                     |       |
| max_updates              | int unsigned                      | NO   |     | 0                     |       |
| max_connections          | int unsigned                      | NO   |     | 0                     |       |
| max_user_connections     | int unsigned                      | NO   |     | 0                     |       |
| plugin                   | char(64)                          | NO   |     | caching_sha2_password |       |
| authentication_string    | text                              | YES  |     | NULL                  |       |
| password_expired         | enum('N','Y')                     | NO   |     | N                     |       |
| password_last_changed    | timestamp                         | YES  |     | NULL                  |       |
| password_lifetime        | smallint unsigned                 | YES  |     | NULL                  |       |
| account_locked           | enum('N','Y')                     | NO   |     | N                     |       |
| Create_role_priv         | enum('N','Y')                     | NO   |     | N                     |       |
| Drop_role_priv           | enum('N','Y')                     | NO   |     | N                     |       |
| Password_reuse_history   | smallint unsigned                 | YES  |     | NULL                  |       |
| Password_reuse_time      | smallint unsigned                 | YES  |     | NULL                  |       |
| Password_require_current | enum('N','Y')                     | YES  |     | NULL                  |       |
| User_attributes          | json                              | YES  |     | NULL                  |       |
+--------------------------+-----------------------------------+------+-----+-----------------------+-------+
wiki > MySQL8
#数据库/MySQL
【弱密码】MySQL8-Connection_control-plugin
https://hodlyounger.github.io/wiki/MySQL8/【弱密码】MySQL8-Connection_control-plugin/
作者
mingming
发布于
2023年12月11日
许可协议