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The macOS system must display the Standard Mandatory DoD Notice and Consent Banner before granting access to the system via SSH.


Overview

Finding ID Version Rule ID IA Controls Severity
V-225135 AOSX-15-000024 SV-225135r610901_rule Medium
Description
Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations, standards, and guidance. System use notifications are required only for access via logon interfaces with human users and are not required when such human interfaces do not exist. The banner must be formatted in accordance with DTM-08-060. Satisfies: SRG-OS-000023-GPOS-00006, SRG-OS-000024-GPOS-00007
STIG Date
Apple OS X 10.15 (Catalina) Security Technical Implementation Guide 2021-11-19

Details

Check Text ( C-26834r467573_chk )
For systems that allow remote access through SSH, run the following command to verify that "/etc/banner" is displayed before granting access:

# /usr/bin/grep Banner /etc/ssh/sshd_config

Banner /etc/banner

If the sshd Banner configuration option does not point to "/etc/banner", this is a finding.
Fix Text (F-26822r467574_fix)
For systems that allow remote access through SSH, run the following command:

# /usr/bin/sudo /usr/bin/sed -i.bak 's/^#Banner.*/Banner \/etc\/banner/' /etc/ssh/sshd_config