The MySQL Database Server 8.0 must generate audit records for all privileged activities or other system-level access.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-235127	MYS8-00-004000	SV-235127r879875_rule		Medium

Description
Without tracking privileged activity, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. System documentation should include a definition of the functionality considered privileged. A privileged function in this context is any operation that modifies the structure of the database, its built-in logic, or its security settings. This would include all Data Definition Language (DDL) statements and all security-related statements. In a SQL environment, it encompasses, but is not necessarily limited to: CREATE ALTER DROP GRANT REVOKE DENY There may also be Data Manipulation Language (DML) statements that, subject to context, should be regarded as privileged. Possible examples in SQL include: TRUNCATE TABLE; DELETE, or DELETE affecting more than n rows, for some n, or DELETE without a WHERE clause; UPDATE or UPDATE affecting more than n rows, for some n, or UPDATE without a WHERE clause; any SELECT, INSERT, UPDATE, or DELETE to an application-defined security table executed by other than a security principal. Depending on the capabilities of the DBMS and the design of the database and associated applications, audit logging may be achieved by means of Database Management System (DBMS) auditing features, database triggers, other mechanisms, or a combination of these. Note that it is particularly important to audit, and tightly control, any action that weakens the implementation of this requirement itself, since the objective is to have a complete audit trail of all administrative activity.

Description

Without tracking privileged activity, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. System documentation should include a definition of the functionality considered privileged. A privileged function in this context is any operation that modifies the structure of the database, its built-in logic, or its security settings. This would include all Data Definition Language (DDL) statements and all security-related statements. In a SQL environment, it encompasses, but is not necessarily limited to: CREATE ALTER DROP GRANT REVOKE DENY There may also be Data Manipulation Language (DML) statements that, subject to context, should be regarded as privileged. Possible examples in SQL include: TRUNCATE TABLE; DELETE, or DELETE affecting more than n rows, for some n, or DELETE without a WHERE clause; UPDATE or UPDATE affecting more than n rows, for some n, or UPDATE without a WHERE clause; any SELECT, INSERT, UPDATE, or DELETE to an application-defined security table executed by other than a security principal. Depending on the capabilities of the DBMS and the design of the database and associated applications, audit logging may be achieved by means of Database Management System (DBMS) auditing features, database triggers, other mechanisms, or a combination of these. Note that it is particularly important to audit, and tightly control, any action that weakens the implementation of this requirement itself, since the objective is to have a complete audit trail of all administrative activity.

STIG	Date
Oracle MySQL 8.0 Security Technical Implementation Guide	2023-06-01

Details

Check Text ( C-38346r623501_chk )
Review the system documentation to determine if MySQL Server is required to audit for all privileged activities or other system-level access. Check if MySQL audit is configured and enabled. The my.cnf file will set the variable audit_file. To further check, execute the following query: SELECT PLUGIN_NAME, PLUGIN_STATUS FROM INFORMATION_SCHEMA.PLUGINS WHERE PLUGIN_NAME LIKE 'audit%'; The status of the audit_log plugin must be "active". If it is not "active", this is a finding. Review audit filters and associated users by running the following queries: SELECT `audit_log_filter`.`NAME`, `audit_log_filter`.`FILTER` FROM `mysql`.`audit_log_filter`; SELECT `audit_log_user`.`USER`, `audit_log_user`.`HOST`, `audit_log_user`.`FILTERNAME` FROM `mysql`.`audit_log_user`; All currently defined audits for the MySQL server instance will be listed. If no audits are returned, this is a finding. Determine if rules are in place to capture the following types of commands related to permissions by running: select * from mysql.audit_log_filter; If the template SQL filter was used, it will have the name "log_stig". Review the filter values. It will show filters for events of the type of the field general_sql_command.str for the following SQL statement types: grant grant_roles revoke revoke_all revoke_roles drop_role alter_user_default_role create_role drop_role grant_roles revoke_roles set_role create_user alter_user drop_user alter_user alter_user_default_role create_user drop_user rename_user show_create_user

Check Text ( C-38346r623501_chk )

Review the system documentation to determine if MySQL Server is required to audit for all privileged activities or other system-level access.

Check if MySQL audit is configured and enabled. The my.cnf file will set the variable audit_file.

To further check, execute the following query:
SELECT PLUGIN_NAME, PLUGIN_STATUS
FROM INFORMATION_SCHEMA.PLUGINS
WHERE PLUGIN_NAME LIKE 'audit%';

The status of the audit_log plugin must be "active". If it is not "active", this is a finding.

Review audit filters and associated users by running the following queries:
SELECT `audit_log_filter`.`NAME`,
`audit_log_filter`.`FILTER`
FROM `mysql`.`audit_log_filter`;

SELECT `audit_log_user`.`USER`,
`audit_log_user`.`HOST`,
`audit_log_user`.`FILTERNAME`
FROM `mysql`.`audit_log_user`;

All currently defined audits for the MySQL server instance will be listed. If no audits are returned, this is a finding.

Determine if rules are in place to capture the following types of commands related to permissions by running:
select * from mysql.audit_log_filter;

If the template SQL filter was used, it will have the name "log_stig".

Review the filter values. It will show filters for events of the type of the field general_sql_command.str for the following SQL statement types:
grant
grant_roles
revoke
revoke_all
revoke_roles
drop_role
alter_user_default_role
create_role
drop_role
grant_roles
revoke_roles
set_role
create_user
alter_user
drop_user
alter_user
alter_user_default_role
create_user
drop_user
rename_user
show_create_user

Fix Text (F-38309r623502_fix)
Configure the MySQL Database Server to audit for all privileged activities or other system-level access. Add the following events to the MySQL Server Audit: grant grant_roles revoke revoke_all revoke_roles drop_role alter_user_default_role create_role drop_role grant_roles revoke_roles set_role create_user alter_user drop_user alter_user alter_user_default_role create_user drop_user rename_user show_create_user See the supplemental file "MySQL80Audit.sql".

Fix Text (F-38309r623502_fix)

Configure the MySQL Database Server to audit for all privileged activities or other system-level access.

Add the following events to the MySQL Server Audit:
grant
grant_roles
revoke
revoke_all
revoke_roles
drop_role
alter_user_default_role
create_role
drop_role
grant_roles
revoke_roles
set_role
create_user
alter_user
drop_user
alter_user
alter_user_default_role
create_user
drop_user
rename_user
show_create_user

See the supplemental file "MySQL80Audit.sql".