MYS8-00-001400 - The audit information produced by the MySQL Database Server 8.0 must be protected from unauthorized deletion - audit.log

Information

If audit data were to become compromised, then competent forensic analysis and discovery of the true source of potentially malicious system activity is impossible to achieve.

To ensure the veracity of audit data, the information system and/or the application must protect audit information from unauthorized deletion. This requirement can be achieved through multiple methods, which will depend upon system architecture and design.

Some commonly employed methods include ensuring log files enjoy the proper file system permissions utilizing file system protections; restricting access; and backing up log data to ensure log data is retained.

Applications providing a user interface to audit data will leverage user permissions and roles identifying the user accessing the data and the corresponding rights the user enjoys in order make access decisions regarding the deletion of audit data.

Audit information includes all information (e.g., audit records, audit settings, and audit reports) needed to successfully audit information system activity.

Deletion of database audit data could mask the theft of, or the unauthorized modification of, sensitive data stored in the database.

Solution

Apply controls and modify permissions to protect database audit log data from unauthorized access, whether stored in the database itself or at the OS level.

sudo vi /etc/my.cnf
[mysqld]
audit-log=FORCE_PLUS_PERMANENT
audit-log-format=JSON
audit-log-encryption=AES

After changing the my.cnf, restart the server.

If not performed already, set the audit log password.
SELECT audit_log_encryption_password_set(password);

Set appropriate permissions on the directory and audit files.
sudo chown mysql <audit directory path>
sudo chgrp mysql <audit directory path>
Change permissions
chmod 750 <directory path>

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Oracle_MySQL_8-0_V1R2_STIG.zip

Item Details

Category: AUDIT AND ACCOUNTABILITY

References: 800-53|AU-9, CAT|II, CCI|CCI-000164, Rule-ID|SV-235101r623425_rule, STIG-ID|MYS8-00-001400, Vuln-ID|V-235101

Plugin: Unix

Control ID: a0d43a5db49949792ff96f7978d98dfba5067170287a745c04082f47a8c7a084