Any publically accessible connection to the operating system must display the Standard Mandatory DoD Notice and Consent Banner before granting access to the system.

From Apple OS X 10.9 (Mavericks) Workstation Security Technical Implementation Guide

Part of SRG-OS-000228

Associated with: CCI-001384 CCI-001385 CCI-001386 CCI-001387 CCI-001388

SV-72741r1_rule Any publically accessible connection to the operating system must display the Standard Mandatory DoD Notice and Consent Banner before granting access to the system.

Vulnerability discussion

Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations, standards, and guidance.System use notifications are required only for access via logon interfaces with human users and are not required when such human interfaces do not exist.The banner must be formatted in accordance with DTM-08-060.

Check content

The policy banner will show if a PolicyBanner.rtf or PolicyBanner.rtfd exists in the /Library/Security folder. Run this command to show the contents of that folder: ls -l /Library/Security/PolicyBanner.rtf* If neither PolicyBanner.rtf nor PolicyBanner.rtfd exists, this is a finding. For systems that allow remote access through SSH, run the following command to ensure that /etc/motd exists: ls -l /etc/motd If /etc/motd does not exist, this is a finding. The banner text of each document MUST read: "You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only. By using this IS (which includes any device attached to this IS), you consent to the following conditions: -The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations. -At any time, the USG may inspect and seize data stored on this IS. -Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG authorized purpose. -This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy. -Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details." If the text is not worded exactly this way, this is a finding.

Fix text

Create a RTF formatted file containing the required text. Name the file PolicyBanner.rtf or PolicyBanner.rtfd and place it in /Library/Security/ For systems that allow remote access through SSH, create a plain text file containing the required text and save it as /etc/motd.

Pro Tips

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