MySQL Allows blank user with no password to login

I just realized I have some blank users which I deleted but I can still login to this dummy account without a password for some reason.

 

mysql -u -p
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.1.69 Source distribution

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

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>

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

mysql> select user()
    -> ;
+--------------+
| user()       |
+--------------+
| -p@localhost |
+--------------+
1 row in set (0.00 sec)


mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| test               |
+--------------------+
2 rows in set (0.00 sec)



mysql> select User from user;
+-----------------+
| User            |
+-----------------+
| root            |
|                 |
| root            |
|                 |
| root            |
+-----------------+
6 rows in set (0.00 sec)

mysql> delete from mysql where User='';
ERROR 1146 (42S02): Table 'mysql.mysql' doesn't exist
mysql> delete from user where User='';
Query OK, 2 rows affected (0.00 sec)

mysql> select User from user;
+-----------------+
| User            |
+-----------------+
| root            |
| root            |
| root            |
+-----------------+
4 rows in set (0.00 sec)


Tags:

mysql, allows, user, password, logini, users, deleted, login, dummy, commands, server, copyright, oracle, affiliates, reserved, registered, trademark, corporation, trademarks, respective, owners, input, select, localhost, databases, database, information_schema, rows, delete, doesn, query, ok,

Latest Articles

  • Cisco Switches How To Get Of Port Line Status Console Messages
  • Cisco DHCP Snooping Relay Setup Information
  • Cisco Switch Setup Guide Command List
  • Cisco 2960 Switch Reset To Factory Defaults
  • How To Boot Cisco CUCM UCSInstall 8.6, 10, 11 and 12 on KVM/Proxmox
  • VBOX VirtualBox How To Import Raw .img Disk File
  • Windows Server 2012, 2016, 2019 How To Install and Missing Disabled Telnet Client
  • proxmox vm networking breaks when you restart your network on the hostnode
  • Linux ln symlink how to update existing symbolic link
  • Ubuntu 18.04 / Linux Mint 19.1 Cannot Type or Login - solution
  • LUKS Hard Drive Encryption on Linux Mint Ubuntu Debian etc how to mount encrypted hard drive
  • How to use nmap locate other machines/computers/servers on your network using nmap
  • Linux Mint 18.2 Create Config File To Start Application Upon Login
  • Dell Wyse Thin Client BIOS Access Key
  • sudoers file in /etc warning about comments/includes!
  • Centos 7 Reallocate logical volume space to another
  • lvm how to reduce volume size
  • letsencrypt certbot error "Unable to find a virtual host listening on port 80 which is currently needed for Certbot to prove to the CA that you control your domain. Please add a virtual host for port 80."
  • SSH error cannot Forward or Listen "bind: Cannot assign requested address"
  • X11 SSH Linux Forwarding Error