STIGQter: STIG Summary: Apple macOS 11 (Big Sur) Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 23 Apr 2021:

The macOS system must be configured so that the su command requires smart card authentication.

DISA Rule

SV-230840r599842_rule

Vulnerability Number

V-230840

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

APPL-11-003051

Severity

CAT II

CCI(s)

• CCI-000366 - The organization implements the security configuration settings.

Weight

10

Fix Recommendation

Make a backup of the PAM SU settings using the following command:
cp /etc/pam.d/su /etc/pam.d/su_backup_`date "+%Y-%m-%d_%H:%M"`

Replace the contents of "/etc/pam.d/su" with the following:

# su: auth account password session
auth sufficient pam_smartcard.so
auth required pam_rootok.so
auth required pam_group.so no_warn group=admin,wheel ruser root_only fail_safe
account required pam_permit.so
account required pam_opendirectory.so no_check_shell
password required pam_opendirectory.so
session required pam_launchd.so

Check Contents

For systems that are not utilizing smart card authentication, this is Not Applicable.

To verify that the "su" command has been configured to require smart card authentication, run the following command:

cat /etc/pam.d/su | grep -i pam_smartcard.so

If the text that returns does not include the line, "auth sufficient pam_smartcard.so" at the TOP of the listing, this is a finding.

Vulnerability Number

V-230840

Documentable

False

Rule Version

APPL-11-003051

Severity Override Guidance

For systems that are not utilizing smart card authentication, this is Not Applicable.

To verify that the "su" command has been configured to require smart card authentication, run the following command:

cat /etc/pam.d/su | grep -i pam_smartcard.so

If the text that returns does not include the line, "auth sufficient pam_smartcard.so" at the TOP of the listing, this is a finding.

Check Content Reference

M

Target Key

5246

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