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All TOSS local interactive user home directories must be owned by the user's primary group.


Overview

Finding ID Version Rule ID IA Controls Severity
V-252971 TOSS-04-020320 SV-252971r824237_rule Medium
Description
Users' home directories/folders may contain information of a sensitive nature. Non-privileged users should coordinate any sharing of information with an SA through shared resources.
STIG Date
Tri-Lab Operating System Stack (TOSS) 4 Security Technical Implementation Guide 2022-08-29

Details

Check Text ( C-56424r824235_chk )
Check that all user home directories are owned by the user's primary group with the following command:

$ awk -F: '($3>=1000)&&($7 !~ /nologin/)&&("stat -c '%g' " $6 | getline dir_group)&&(dir_group!=$4){print $1,$6}' /etc/passwd
admin /home/admin

Check each user's primary group with the following command (example command is for the "admin" user):

$ sudo grep "^admin" /etc/group
admin:x:250:smithj,jonesj,jacksons

If the user home directory referenced in "/etc/passwd" is not group-owned by that user's primary GID, this is a finding.
Fix Text (F-56374r824236_fix)
Change the group owner of interactive user's home directories to that users primary group. To change the group owner of a local interactive user's home directory, use the following command:

Note: The example will be for the user "smithj."

$ sudo chgrp smithj /home/smithj