The Oracle Linux operating system 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 ID | Version | Rule ID | IA Controls | Severity |
| V-221733 | OL07-00-020670 | SV-221733r991589_rule | Medium |
| 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. |
| STIG | Date |
| Oracle Linux 7 Security Technical Implementation Guide | 2024-08-26 |
Details
| Check Text (C-23448r419271_chk) |
| Verify all files and directories in a local interactive user home directory are group-owned by a group of which 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". # 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 are found with an owner different than the group home directory user, check to see if the user is a member of that group with the following command: # grep smithj /etc/group sa:x:100:juan,shelley,bob,smithj smithj:x:521:smithj If the user is not a member of a group that group-owns file(s) in a local interactive user's home directory, this is a finding. |
| Fix Text (F-23437r419272_fix) |
| Change the group of a local interactive user's files and directories to a group that the interactive user is a member of. 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. # chgrp users /home/smithj/<file> |