![]() Mysql> SELECT host, user, plugin FROM er WHERE plugin = ‘mysql_native_password’ Ģ. ![]() Mysql> ALTER USER IDENTIFIED WITH caching_sha2_password BY OK, 0 rows affected (0.15 sec) | 1.1.1.1 | user_1 | caching_sha2_password |įor current users authenticated with ‘mysql_native_password’, here’s how to update them to ‘caching_sha2_password’: mysql> SELECT host, user, plugin FROM er WHERE plugin = ‘mysql_native_password’ Mysql> SELECT host, user, plugin FROM er WHERE user = ‘user_1’ Here’s how to create new users with the new default authentication plugin, ‘caching_sha2_password’: mysql> CREATE USER IDENTIFIED BY OK, 0 rows affected (3.26 sec) However, the advantage of the new default ‘caching_sha2_password’ plugin over this one is that it uses server-side caching for better performance.) Configuration Guidelines: (Another authentication plugin, ‘sha256_password’, which was introduced in version 5.6, also uses SHA-256, and from security perspective it can also be used. If you use MySQL native plugins – and not external authentication such as PAM, Windows login IDs, LDAP, or Kerberos – we encourage you to use ‘caching_sha2_password’ for all new users. The new default authentication plugin, ‘caching_sha2_password,’ implements SHA-256 hashing, which is much stronger because it 1) is not susceptible to collision attacks like SHA1, and 2) uses 5,000 rounds of SHA-256 transformation on a salted password (combination of the password with random data), preventing the use of rainbow tables to recover the password. In such a case, an attacker that gains access to the er table can get the user’s hash value and use a rainbow table to recover the plain password. As a result, two users with the same password will have the same hash value. In addition, the hash function is calculated only on the user’s plain password. Starting with MySQL 8.0, the default authentication plugin is changed from ‘mysql_native_password’ to ‘caching_sha2_password.’ The former plugin implements the SHA1 algorithm, which is more susceptible than expected to collision attacks that fabricate the same hash value for different inputs. When a client connects to the MySQL server, the server verifies which authentication plugin is configured for this user and then invokes that plugin to authenticate users who provide the correct password. In this blog, we will review the new security features and guide you on how to use them appropriately. MySQL 8.0 was released in April 2018, bringing improvements across the board, including important security enhancements. ![]() Use them appropriately and your organization can secure its data and keep you out of trouble. Every new database version brings security upgrades. In fact, most of these breaches are actually caused by poor security configuration and privilege abuse. Most database breaches are blamed on insiders such as employees who are either malicious or whose security has been compromised.
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