The system must not allow users to configure .forward files.

Use of the .forward file poses a security risk in that sensitive data may be inadvertently transferred outside the organization. The .forward file also poses a secondary risk as it can be used to execute commands that may perform unintended actions.

The root role is required.

# for dir in \ `logins -ox | awk -F: '($8 == "PS") { print $6 }'`; do ls -l ${dir}/.forward 2>/dev/null done

If output is produced, this is a finding.

The root role is required.

Remove any .forward files that are found.

# pfexec rm [filename]