SV-28606r1: The FTPS/FTP service on the system must be configured with the Department of Defense (DoD) login banner. | Red Hat Enterprise Linux 5 Security Technical Implementation Guide

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Assessment Title

Rule Text

The FTPS/FTP service on the system must be configured with the Department of Defense (DoD) login banner.

Description

Discussion Text

Failure to display the logon banner prior to a logon attempt will negate legal proceedings resulting from unauthorized access to system resources. Note: SFTP and FTPS are encrypted alternatives to FTP to be used in place of FTP. SFTP is implemented by the SSH service and uses its banner configuration.

How this relates to the STIG checklist: STIG vs SCAP benchmark.

IA Controls

NIST SP 800-53

Not mappedCCI-000048CCE-4554-2

Additional Details

Responsibility

System Administrator

IA Controls

ECWM-1

References

DPMS Target Red Hat 5 DISA DPMS Target Red Hat 5 2154

SCC Automation Reference

The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.

#!/bin/bash
# Reconstructed from oval:mil.disa.fso.rhel11:def:46
# The FTPS/FTP service on the system must be configured with the Department of Defense (DoD) login banner.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# VSFTP not installed
# rpminfo_object (rpminfo_test)
test_1() {
  ! ( rpm -q --quiet 'vsftpd' &>/dev/null )
}
# DoD Banner message exist
# textfilecontent54_object (textfilecontent54_test)
test_2() {
  grep -Pq '^\s*banner_file\s*=\s*(\S+)' '/etc/vsftpd/vsftpd.conf' &>/dev/null
}
# vsftp warning banner
# textfilecontent54_object (textfilecontent54_test)
test_3() {
  grep -P '(^\s*You\s+are\s+accessing\s+a\s+U\.S\.\s+Government\s+\(USG\)\s+Information\s+System\s+\(IS\)\s+that\s+is\s+provided\s+for\s+USG[-]authorized\s+use\s+only\.\s+By\s+using\s+this\s+IS\s+\(which\s+includes\s+any\s+device\s+attached\s+to\s+this\s+IS\),\s+you\s+consent\s+to\s+the\s+following\s+conditions:\s+[-]+\s*The\s+USG\s+routinely\s+intercepts\s+and\s+monitors\s+communications\s+on\s+this\s+IS\s+for\s+purposes\s+including,\s+but\s+not\s+limited\s+to,\s+penetration\s+testing,\s+COMSEC\s+monitoring,\s+network\s+operations\s+and\s+defense,\s+personnel\s+misconduct\s+\(PM\),\s+law\s+enforcement\s+\(LE\),\s+and\s+counterintelligence\s+\(CI\)\s+investigations\.\s+[-]+\s*At\s+any\s+time,\s+the\s+USG\s+may\s+inspect\s+and\s+seize\s+data\s+stored\s+on\s+this\s+IS\.\s+[-]+\s*Communications\s+using,\s+or\s+data\s+stored\s+on,\s+this\s+IS\s+are\s+not\s+private,\s+are\s+subject\s+to\s+routine\s+monitoring,\s+interception,\s+and\s+search,\s+and\s+may\s+be\s+disclosed\s+or\s+used\s+for\s+any\s+USG[-]authorized\s+purpose\.\s+[-]+\s*This\s+IS\s+includes\s+security\s+measures\s+\(e\.g\.,\s+authentication\s+and\s+access\s+controls\)\s+to\s+protect\s+USG\s+interests[-]+\s*[-]+\s*not\s+for\s+your\s+personal\s+benefit\s+or\s+privacy\.\s+[-]+\s*Notwithstanding\s+the\s+above,\s+using\s+this\s+IS\s+does\s+not\s+constitute\s+consent\s+to\s+PM,\s+LE\s+or\s+CI\s+investigative\s+searching\s+or\s+monitoring\s+of\s+the\s+content\s+of\s+privileged\s+communications,\s+or work product,\s+related\s+to\s+personal\s+representation\s+or\s+services\s+by\s+attorneys,\s+psychotherapists,\s+or\s+clergy,\s+and\s+their\s+assistants\.\s+Such\s+communications\s+and\s+work\s+product\s+are\s+private\s+and\s+confidential\.\s+See\s+User\s+Agreement\s+for\s+details\.|I've\s+read\s+&\s+consent\s+to\s+terms\s+in\s+IS\s+user\s+agreem't\.)'  &>/dev/null
}
# gssftp not installed
# file_object (file_test)
test_4() {
  ! ( test -e '/etc/xinetd.d/gssftp' &>/dev/null )
}
# DoD Banner message exist
# textfilecontent54_object (textfilecontent54_test)
test_5() {
  grep -Pq '^\s*banner\s+=\s+(\S+)' '/etc/xinetd.d/gssftp' &>/dev/null
}
# gssftp warning banner
# textfilecontent54_object (textfilecontent54_test)
test_6() {
  grep -P '(^\s*You\s+are\s+accessing\s+a\s+U\.S\.\s+Government\s+\(USG\)\s+Information\s+System\s+\(IS\)\s+that\s+is\s+provided\s+for\s+USG[-]authorized\s+use\s+only\.\s+By\s+using\s+this\s+IS\s+\(which\s+includes\s+any\s+device\s+attached\s+to\s+this\s+IS\),\s+you\s+consent\s+to\s+the\s+following\s+conditions:\s+[-]+\s*The\s+USG\s+routinely\s+intercepts\s+and\s+monitors\s+communications\s+on\s+this\s+IS\s+for\s+purposes\s+including,\s+but\s+not\s+limited\s+to,\s+penetration\s+testing,\s+COMSEC\s+monitoring,\s+network\s+operations\s+and\s+defense,\s+personnel\s+misconduct\s+\(PM\),\s+law\s+enforcement\s+\(LE\),\s+and\s+counterintelligence\s+\(CI\)\s+investigations\.\s+[-]+\s*At\s+any\s+time,\s+the\s+USG\s+may\s+inspect\s+and\s+seize\s+data\s+stored\s+on\s+this\s+IS\.\s+[-]+\s*Communications\s+using,\s+or\s+data\s+stored\s+on,\s+this\s+IS\s+are\s+not\s+private,\s+are\s+subject\s+to\s+routine\s+monitoring,\s+interception,\s+and\s+search,\s+and\s+may\s+be\s+disclosed\s+or\s+used\s+for\s+any\s+USG[-]authorized\s+purpose\.\s+[-]+\s*This\s+IS\s+includes\s+security\s+measures\s+\(e\.g\.,\s+authentication\s+and\s+access\s+controls\)\s+to\s+protect\s+USG\s+interests[-]+\s*[-]+\s*not\s+for\s+your\s+personal\s+benefit\s+or\s+privacy\.\s+[-]+\s*Notwithstanding\s+the\s+above,\s+using\s+this\s+IS\s+does\s+not\s+constitute\s+consent\s+to\s+PM,\s+LE\s+or\s+CI\s+investigative\s+searching\s+or\s+monitoring\s+of\s+the\s+content\s+of\s+privileged\s+communications,\s+or work product,\s+related\s+to\s+personal\s+representation\s+or\s+services\s+by\s+attorneys,\s+psychotherapists,\s+or\s+clergy,\s+and\s+their\s+assistants\.\s+Such\s+communications\s+and\s+work\s+product\s+are\s+private\s+and\s+confidential\.\s+See\s+User\s+Agreement\s+for\s+details\.|I've\s+read\s+&\s+consent\s+to\s+terms\s+in\s+IS\s+user\s+agreem't\.)'  &>/dev/null
}

if ( ( test_1 || ( test_2 && test_3 ) ) && ( test_4 || ( test_5 && test_6 ) ) ); then
  echo "PASS"
else
  echo "FAIL"
fi

Assessment Script Powered by AISandbox-executed

A standalone Shell script to assess this control automatically. Review before running it in your environment.

Syntax-checked and actually executed in an isolated sandbox (not the real system this checks) — confirmed to run without errors.

#!/bin/sh
# oval:mil.disa.fso.rhel11:def:46 compliant Shell script

if ! command -v rpm &> /dev/null; then
  echo "FAIL"
  exit 1
fi

if ! grep -q "^banner_file\\s*=\\s*/etc/banner/vsftp" /etc/vsftpd.conf; then
  echo "FAIL"
  exit 1
fi

if ! [ -f "/etc/banner/vsftp" ]; then
  echo "FAIL"
  exit 1
fi

if ! grep -q "You are accessing a U.S. Government \(USG\) Information System" /etc/banner/vsftp; then
  echo "FAIL"
  exit 1
fi

echo "PASS"
exit 0

Remediation

Provide the proper text for the DoD banner to be presented by the FTP server to the user.

For vsftp:
Examine the /etc/vsftp.conf file for the "banner_file" entry. (i.e. banner_file = /etc/banner/vsftp)

For gssftp:
Examine the /etc/xinetd.d/gssftp file for the "banner" entry. (i.e. banner = /etc/banner/gssftp)

For both:
Add the banner entry if one is not found.

Modify or create the referenced banner file to contain one of the following DoD login banners (based on the character limitations imposed by the system).

DoD Login Banners:

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.

I've read & consent to terms in IS user agreem't.