Title

The Red Hat Enterprise Linux operating system must be configured so that all files and directories contained in local interactive user home directories have a valid owner. (Cat II impact)

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 Content

Verify all files and directories in a local interactive user's home directory have a valid owner. Check the 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/smithj -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 smithj 231 Mar 5 17:06 file3 If any files or directories are found without an owner, this is a finding.

Fix Text

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 7 with the "chown" command: Note: The example will be for the user smithj, who has a home directory of "/home/smithj". $ sudo chown smithj /home/smithj/<file or directory>

Additional Identifiers

Rule ID: SV-204471r744105_rule

Vulnerability ID: V-204471

Group Title: SRG-OS-000480-GPOS-00227

Expert Comments

CCIs tied to check.

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