SV-35059r2: The SMTP service HELP command must not be enabled. | HP-UX 11.31 Security Technical Implementation Guide

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Assessment Title

Rule Text

The SMTP service HELP command must not be enabled.

Description

Discussion Text

The HELP command should be disabled to mask version information. The version of the SMTP service software could be used by attackers to target vulnerabilities present in specific software versions.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000366

Additional Details

Responsibility

System Administrator

References

DPMS Target HP-UX 11.31 DISA DPMS Target HP-UX 11.31 2171

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.hpux11:def:267
# The SMTP service HELP command must not be enabled.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# sendmail helpfile missing or empty
# file_object (file_test)
test_1() {
  [ "$(stat -c '%s' '/etc/mail/helpfile')" -eq 0 ]
}

if test_1; 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.hpux11:def:267 STIG compliance check script
if [ -s /etc/mail/helpfile ]; then echo "FAIL"; exit 1; fi; echo "PASS"; exit 0

Remediation

To disable the SMTP HELP command, remove or empty the Sendmail help file:

/etc/mail/helpfile.