OL 8 must be configured so that all files and directories contained in local interactive user home directories are group-owned by a group of which the home directory owner is a member.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-248642OL08-00-010741SV-248642r991589_ruleCCI-000366medium
Description
If a local interactive user's files are group-owned by a group of which the user is not a member, unintended users may be able to access them.
STIGDate
Oracle Linux 8 Security Technical Implementation Guide2025-05-13

Details

Check Text (C-248642r991589_chk)

Verify all files and directories in a local interactive user home directory are group-owned by a group that the user is a member. Check the group owner of all files and directories in a local interactive user's home directory with the following command: Note: The example will be for the user "smithj", who has a home directory of "/home/smithj". $ sudo ls -lLR /<home directory>/<users home directory>/ -rw-r--r-- 1 smithj smithj 18 Mar 5 17:06 file1 -rw-r--r-- 1 smithj smithj 193 Mar 5 17:06 file2 -rw-r--r-- 1 smithj sa 231 Mar 5 17:06 file3 If any files found with a group-owner different from the home directory user private group, determine if the user is a member of that group with the following command: $ sudo grep smithj /etc/group sa:x:100:juan,shelley,bob,smithj smithj:x:521:smithj If any files or directories are group owned by a group that the directory owner is not a member of, this is a finding.

Fix Text (F-52030r779491_fix)

Change the group of a local interactive user's files and directories to a group that the interactive user is a member. To change the group owner of a local interactive user's files and directories, use the following command: Note: The example will be for the user smithj, who has a home directory of "/home/smithj" and is a member of the users group. $ sudo chgrp smithj /home/smithj/<file or directory>