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V-277122

CAT II (Medium)

The macOS system must secure users' home folders.

Rule ID

SV-277122r1148818_rule

STIG

Apple macOS 26 (Tahoe) Security Technical Implementation Guide

Version

V1R2

CCIs

CCI-000366

Discussion

The system must be configured to prevent access to other users' home folders. The default behavior of macOS is to allow all valid users access to the top level of every other user's home folder while restricting access only to the Apple default folders within. Satisfies: SRG-OS-000480-GPOS-00230, SRG-OS-000480-GPOS-00228

Check Content

Verify the macOS system is configured so that permissions are set correctly on user home directories with the following command:

/usr/bin/find /System/Volumes/Data/Users -mindepth 1 -maxdepth 1 -type d ! \( -perm 700 -o -perm 711 \) | /usr/bin/grep -v "Shared" | /usr/bin/grep -v "Guest" | /usr/bin/wc -l | /usr/bin/xargs

If the result is not "0", this is a finding.

Fix Text

Configure the macOS system to set the appropriate permissions for each user on the system with the following command:

IFS=$'\n'
for userDirs in $( /usr/bin/find /System/Volumes/Data/Users -mindepth 1 -maxdepth 1 -type d ! \( -perm 700 -o -perm 711 \) | /usr/bin/grep -v "Shared" | /usr/bin/grep -v "Guest" ); do
/bin/chmod og-rwx "$userDirs"
done
unset IFS