STIGQter: STIG Summary: MariaDB Enterprise 10.x Security Technical Implementation Guide Version: 2 Release: 5 Benchmark Date: 01 Apr 2026:

MariaDB must generate audit records when unsuccessful attempts to delete privileges/permissions occur.

DISA Rule

SV-253759r961812_rule

Vulnerability Number

V-253759

Group Title

SRG-APP-000499-DB-000331

Rule Version

MADB-10-010700

Severity

CAT II

CCI(s)

• CCI-000172 - Generate audit records for the event types defined in AU-2 c that include the audit record content defined in AU-3.

Weight

10

Fix Recommendation

No super/administrative users should not have access to modify tables within the mysql database. Verify users do not have access and revoke as necessary. Example:

View user grants:

MariaDB> SHOW GRANTS FOR 'username'@'host';

If user has INSERT, UPDATE, and/or DELETE on the mysql database or all databases, modify the user privileges as necessary.

The MariaDB Enterprise Audit plugin can be configured to audit these changes.

Update necessary audit filters to include query_event ALL. Example:

MariaDB> DELETE FROM mysql.server_audit_filters WHERE filtername = 'default';

MariaDB> INSERT INTO mysql.server_audit_filters (filtername, rule)
VALUES ('default',
JSON_COMPACT(
'{
"connect_event": [
"CONNECT",
"DISCONNECT"
],
"query_event": [
"ALL"
]
}'
));

Check Contents

Verify the MariaDB Enterprise Audit plugin is loaded and actively logging:

MariaDB> SHOW GLOBAL STATUS LIKE 'Server_audit_active';

If the MariaDB Enterprise Audit is not active, this is a finding.

As the database administrator, create a user without special permissions:
MariaDB> CREATE USER testuser IDENTIFIED BY password ;

In one terminal, tail the audit log file. For example:
$ tail -F /var/lib/mysql/server_audit.log (default location)

As the database administrator, create a role by running the following SQL:
MariaDB> CREATE ROLE user_role

As the database administrator, GRANT user_role to testuser:
MariaDB> GRANT user_role to testuser

As the database administrator, add two privileges to user_role for testdb and then delete one of the privileges:
MariaDB> GRANT SELECT,DELETE on testdb to testuser

As the testuser, remove the users delete privilege by granting only SELECT, and revoke grant from test user:
MariaDB> GRANT SELECT on testdb to testuser
MariaDB> REVOKE user_role to testuser

If the audit records for REVOKE and the second SELECT are not produced in the first terminal, this is a finding.

Vulnerability Number

V-253759

Documentable

False

Rule Version

MADB-10-010700

Severity Override Guidance

Verify the MariaDB Enterprise Audit plugin is loaded and actively logging:

MariaDB> SHOW GLOBAL STATUS LIKE 'Server_audit_active';

If the MariaDB Enterprise Audit is not active, this is a finding.

As the database administrator, create a user without special permissions:
MariaDB> CREATE USER testuser IDENTIFIED BY password ;

In one terminal, tail the audit log file. For example:
$ tail -F /var/lib/mysql/server_audit.log (default location)

As the database administrator, create a role by running the following SQL:
MariaDB> CREATE ROLE user_role

As the database administrator, GRANT user_role to testuser:
MariaDB> GRANT user_role to testuser

As the database administrator, add two privileges to user_role for testdb and then delete one of the privileges:
MariaDB> GRANT SELECT,DELETE on testdb to testuser

As the testuser, remove the users delete privilege by granting only SELECT, and revoke grant from test user:
MariaDB> GRANT SELECT on testdb to testuser
MariaDB> REVOKE user_role to testuser

If the audit records for REVOKE and the second SELECT are not produced in the first terminal, this is a finding.

Check Content Reference

M

Target Key

5475