Vulnerability Discussion

Unowned files and directories may be unintentionally inherited if a user is assigned the same User Identifier "UID" as the UID of the un-owned files.

Check

Verify all local files and directories on RHEL 8 have a valid owner with the following command:

Note: The value after -fstype must be replaced with the filesystem type. XFS is used as an example.

$ sudo find / -fstype xfs -nouser

If any files on the system do not have an assigned owner, this is a finding.

Note: Command may produce error messages from the /proc and /sys directories.

Fix

Either remove all files and directories from the system that do not have a valid user, or assign a valid user to all unowned files and directories on RHEL 8 with the "chown" command:

$ sudo chown