TOSS 5 /var/log/messages file must be group-owned by root.

Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the TOSS 5 system or platform. Additionally, personally identifiable information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives. The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.

Verify the "/var/log/messages" file is group-owned by root using the following command: $ ls -la /var/log/messages rw-------. 1 root root 564223 July 11 11:34 /var/log/messages If "/var/log/messages" does not have a group owner of "root" and is not documented with the information system security officer (ISSO) as an operational requirement, this is a finding.

Change the group owner of the "/var/log/messages" file to "root" using the following command: $ sudo chgrp root /var/log/messages