Detections
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AOSX-14-003052 - The macOS system must be configured so that the sudo command requires smart card authentication.

Information

Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security baseline across DoD that reflects the most restrictive security posture consistent with operational requirements.

Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impacting the security state of the system, including the parameters required to satisfy other security control requirements. Security-related parameters include, for example: registry settings; account, file, directory permission settings; and settings for functions, ports, protocols, services, and remote connections.

Solution

Make a backup of the PAM SUDO settings using the following command:
cp /etc/pam.d/login /etc/pam.d/sudo_backup_'date '+%Y-%m-%d_%H:%M''

Replace the contents of '/etc/pam.d/login' with the following:

# sudo: auth account password session
auth sufficient pam_smartcard.so
#auth required pam_opendirectory.so
auth required pam_deny.so
account required pam_permit.so
password required pam_deny.so
session required pam_permit.so

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Apple_OS_X_10-14_V2R6_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-209628r610285_rule, STIG-ID|AOSX-14-003052, STIG-Legacy|SV-105123, STIG-Legacy|V-95985, Vuln-ID|V-209628

Plugin: Unix

Control ID: 4e8d9ea04b920b9f1933937f2e59acb28f9c3ca2264886fbfe0a3db4479c3d8d