OL 8 must be configured to allow sending email notifications of unauthorized configuration changes to designated personnel.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-256979	OL08-00-010358	SV-256979r902803_rule		Medium

Description

Unauthorized changes to the baseline configuration could make the system vulnerable to various attacks or allow unauthorized access to the operating system. Changes to operating system configurations can have unintended side effects, some of which may be relevant to security. Detecting such changes and providing an automated response can help avoid unintended, negative consequences that could ultimately affect the security state of the operating system. The operating system's IMO/ISSO and SAs must be notified via email and/or monitoring system trap when there is an unauthorized modification of a configuration item.

STIG	Date
Oracle Linux 8 Security Technical Implementation Guide	2023-12-01

Details

Check Text ( C-60657r902801_chk )
Verify that the operating system is configured to allow sending email notifications. Note: The "mailx" package provides the "mail" command that is used to send email messages. Verify that the "mailx" package is installed on the system: $ sudo yum list installed mailx mailx.x86_64 12.5-29.el8 @ol8_baseos_latest If "mailx" package is not installed, this is a finding.

Fix Text (F-60599r902802_fix)
Install the "mailx" package on the system: $ sudo yum install mailx