V-281251

Discussion

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. Satisfies: SRG-OS-000445-GPOS-00199, SRG-OS-000134-GPOS-00068

Check Content

Verify RHEL 10 enforces correct operation of security functions through the use of SELinux with the following command:

$ getenforce
Enforcing

If SELINUX is not set to "Enforcing", this is a finding.

Verify SELinux is configured to be enforcing at boot.

$ sudo grep "SELINUX=" /etc/selinux/config | grep -v '#'
SELINUX=enforcing

If an uncommented SELinux line is missing or not set to "enforcing", this is a finding.