The Red Hat Enterprise Linux operating system must enable SELinux.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-204453	RHEL-07-020210	SV-204453r603261_rule		Medium

Description
Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters. This requirement applies to operating systems performing security function verification/testing and/or systems and environments that require this functionality.

Description

Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters. This requirement applies to operating systems performing security function verification/testing and/or systems and environments that require this functionality.

STIG	Date
Red Hat Enterprise Linux 7 Security Technical Implementation Guide	2021-03-01

Details

Check Text ( C-36343r602627_chk )
Per OPORD 16-0080, the preferred intrusion detection system is McAfee Host Intrusion Prevention System (HIPS) in conjunction with SELinux. McAfee Endpoint Security for Linux (ENSL) is an approved alternative to McAfee Virus Scan Enterprise (VSE) and HIPS. For RHEL 7 systems, SELinux is an approved alternative to McAfee HIPS. Regardless of whether or not McAfee HIPS or ENSL is installed, SELinux is interoperable with both McAfee products and SELinux is still required. Verify the operating system verifies correct operation of all security functions. Check if "SELinux" is active and in "Enforcing" mode with the following command: # getenforce Enforcing If "SELinux" is not active and not in "Enforcing" mode, this is a finding.

Check Text ( C-36343r602627_chk )

Per OPORD 16-0080, the preferred intrusion detection system is McAfee Host Intrusion Prevention System (HIPS) in conjunction with SELinux. McAfee Endpoint Security for Linux (ENSL) is an approved alternative to McAfee Virus Scan Enterprise (VSE) and HIPS. For RHEL 7 systems, SELinux is an approved alternative to McAfee HIPS. Regardless of whether or not McAfee HIPS or ENSL is installed, SELinux is interoperable with both McAfee products and SELinux is still required.

Verify the operating system verifies correct operation of all security functions.

Check if "SELinux" is active and in "Enforcing" mode with the following command:

# getenforce
Enforcing

If "SELinux" is not active and not in "Enforcing" mode, this is a finding.

Fix Text (F-36306r602628_fix)
Configure the operating system to verify correct operation of all security functions. Set the "SELinux" status and the "Enforcing" mode by modifying the "/etc/selinux/config" file to have the following line: SELINUX=enforcing A reboot is required for the changes to take effect.