The macOS system must enforce multifactor authentication for the su command.
An XCCDF Rule
Description
<VulnDiscussion>The system must be configured such that, when the su command is used, multifactor authentication is enforced. All users must go through multifactor authentication to prevent unauthenticated access and potential compromise to the system. IMPORTANT: Modification of Pluggable Authentication Modules (PAM) now requires user authorization or use of a Privacy Preferences Policy Control (PPPC) profile from MDM that authorizes modifying system administrator files or full disk access. Note: /etc/pam.d/su will be automatically modified to its original state following any update or major upgrade to the operating system. Satisfies: SRG-OS-000105-GPOS-00052,SRG-OS-000106-GPOS-00053,SRG-OS-000107-GPOS-00054,SRG-OS-000108-GPOS-00055,SRG-OS-000112-GPOS-00057</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-259548r1009601_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
Configure the macOS system to enforce multifactor authentication for the su command with the following commands:
/bin/cat > /etc/pam.d/su << SU_END
# su: auth account password session
auth sufficient pam_smartcard.so
auth required pam_rootok.so