破解MySQL密码

MySql破解密码

1.跳过授权表登录

修改配置文件/etc/my.cnf，添加skip-grant-tables，跳过授权表登录，重启服务

[root@server ~]# vim /etc/my.cnf
[mysqld]             //在这行的下面一行添加下面的内容
skip-grant-tables    //手动添加这一行
[root@server ~]# systemctl restart mysqld.service   //重启mysql服务生效配置

2.免密进入数据库修改密码

[root@server ~]# mysql      //免密登录
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.38 MySQL Community Server (GPL)

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> use mysql;   //进入mysql库
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> update user set authentication_string=password('yefeng123!') where user='root';  //修改root密码
Query OK, 0 rows affected, 1 warning (0.00 sec)
Rows matched: 2  Changed: 0  Warnings: 1

mysql> flush privileges;   //刷新权限表
Query OK, 0 rows affected (0.00 sec)

mysql> exit
Bye
[root@server ~]# vim /etc/my.cnf
#skip-grant-tables	    //编辑配置文件将skip-grant-tables参数注释或删除
[root@server ~]# systemctl restart mysqld.service
[root@server ~]# mysql -uroot -pyefeng123!       //登录测试
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.38 MySQL Community Server (GPL)

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>             //进到此页面说明成功了！