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V-253765

CAT II (Medium)

MariaDB must generate audit records when unsuccessful logons or connection attempts occur.

Rule ID

SV-253765r961824_rule

STIG

MariaDB Enterprise 10.x Security Technical Implementation Guide

Version

V2R5

CCIs

CCI-000172

Discussion

For completeness of forensic analysis, it is necessary to track failed attempts to log on to MariaDB. While positive identification may not be possible in a case of failed authentication, as much information as possible about the incident must be captured.

Check Content

Check what filters are in place by running the following as an administrative user: 

MariaDB> SELECT * FROM mysql.server_audit_filters;

Verify connect_events include connect in audit filters. If not, this is a finding. 

Log in to and out of the MariaDB database server with both valid and invalid users. Verify the connect and disconnect are logged in the audit logfile or syslog depending on how it is configured. 

If connect/disconnect and invalid logins are not logged, this is a finding.

Fix Text

Edit the necessary filters to include  connect_events connect. 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"
            ]
         }'
      ));