TMA-MYSQL-7.1

Ensure your authentication_policy is Set to a Secure Option

HighLevel 1Automatedmysql

Description

Define your authentication policy by setting the mysql system variable authentication_policy. The default value of authentication_policy is '*,,'. This means that factor 1 is required in account definitions and can use any authentication plugin (with caching_sha2_password being the default), and that factors 2 and 3 are optional and each can use any authentication plugin. Runs mysql -NBe with the client defaults: put an administrative account in ~/.my.cnf (mode 0600) or a mysql_config_editor login path, not MYSQL_PWD (see 1.4/1.6).

How it is checked

Audit method: SQL query

sql_query

out=$(mysql -NBe "SELECT IF(@@global.authentication_policy NOT LIKE '%mysql_native_password%', 'compliant', 'noncompliant')" 2>/dev/null) || exit 1; printf '%s\n' "$out"

Expected output: compliant

How it is fixed

Fix method: Guidance or infrastructure patch

Set authentication_policy (e.g. '*,,' or 'caching_sha2_password,,') without mysql_native_password, then migrate accounts: SELECT user, host FROM mysql.user WHERE plugin = 'mysql_native_password'; ALTER USER <user> IDENTIFIED WITH caching_sha2_password BY RANDOM PASSWORD PASSWORD EXPIRE;

Properties

Operating systems: Any
Tags: mysqldatabaseauthentication
Reference: CIS Oracle MySQL Community Server 8.4 Benchmark v1.1.0 - 7.1 Ensure your authentication_policy is Set to a Secure Option

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target mysql