Title

SLEM 5 must enable the SELinux targeted policy. (Cat II impact)

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.

Check Content

Verify "SELinux" is active and enforcing the targeted policy with the following command: > sudo sestatus SELinux status: enabled SELinuxfs mount: /sys/fs/selinux SELinux root directory: /etc/selinux Loaded policy name: targeted Current mode: enforcing Mode from config file: enforcing Policy MLS status: enabled Policy deny_unknown status: allowed Memory protection checking: actual (secure) Max kernel policy version: 33 If the "Loaded policy name" is not set to "targeted", this is a finding.

Fix Text

Configure SLEM 5 to verify correct operation of all security functions. Add or modify the following line in the "/etc/selinux/config" file: SELINUXTYPE=targeted A reboot is required for the changes to take effect.

Additional Identifiers

Rule ID: SV-261370r996551_rule

Vulnerability ID: V-261370

Group Title: SRG-OS-000445-GPOS-00199

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.