Check: MYS8-00-003500
Oracle MySQL 8.0 STIG:
MYS8-00-003500
(in versions v1 r5 through v1 r1)
Title
The MySQL Database Server 8.0 must generate audit records when unsuccessful attempts to delete security objects occur. (Cat II impact)
Discussion
The removal of security objects from the database/Database Management System (DBMS) would seriously degrade a system's information assurance posture. If such an action is attempted, it must be logged. To aid in diagnosis, it is necessary to keep track of failed attempts in addition to the successful ones.
Check Content
Review the system documentation to determine if MySQL Server is required to audit when unsuccessful attempts to delete security objects occur. 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. To check if the audit filters in place are generating records when security objects are deleted, run the following, which will test auditing as a user with administrator-level privileges: drop table mysql.columns_priv; ERROR: 1142: DROP command denied to user 'newuser'@'localhost' for table 'columns_priv' Review the audit log by running the Linux command: sudo cat <directory where audit log files are located>/audit.log|egrep DROP For example if the values returned by - "select @@datadir, @@audit_log_file; " are /usr/local/mysql/data/, audit.log sudo cat /usr/local/mysql/data/audit.log |egrep DROP The audit data will look similar to the example below and contain a non-zero status value: { "timestamp": "2020-08-21 17:21:12", "id": 0, "class": "general", "event": "status", "connection_id": 17, "account": { "user": "newuser", "host": "localhost" }, "login": { "user": "newuser", "os": "", "ip": "::1", "proxy": "" }, "general_data": { "command": "Query", "sql_command": "drop_table", "query": "drop table `mysql`.audit_log_user", "status": 1142 } }, If the audit event is not present, this is a finding.
Fix Text
Configure the MySQL Database Server to audit when unsuccessful attempts to delete security objects occur. See the supplemental file "MySQL80Audit.sql".
Additional Identifiers
Rule ID: SV-235122r879872_rule
Vulnerability ID: V-235122
Group Title: SRG-APP-000501-DB-000337
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000172 |
The information system generates audit records for the events defined in AU-2 d. with the content defined in AU-3. |
Controls
Number | Title |
---|---|
AU-12 |
Audit Generation |