Title

The ftpusers file must be group-owned by root, bin, or sys. (Cat II impact)

Discussion

If the ftpusers file is not group-owned by root or a system group, an unauthorized user may modify the file to allow unauthorized accounts to use FTP.

Check Content

Check the group ownership of the ftpusers file. Procedure: # ls -lL /etc/ftpd/ftpusers /etc/vsftpd.ftpusers /etc/vsftpd/ftpusers If the file is not group-owned by root, bin, or sys, this is a finding.

Fix Text

Change the group owner of the ftpusers file. Procedure: # chgrp root /etc/ftpusers

Additional Identifiers

Rule ID: SV-226951r603265_rule

Vulnerability ID: V-226951

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.