SV-38251r1: Default system accounts (with the exception of root) must not be listed in the cron.allow file or must be included in the cron.deny file, if cron.allow does not exist. | HP-UX 11.31 Security Technical Implementation Guide

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Assessment Title

Rule Text

Default system accounts (with the exception of root) must not be listed in the cron.allow file or must be included in the cron.deny file, if cron.allow does not exist.

Description

Discussion Text

To centralize the management of privileged account crontabs, of the default system accounts, only root may have a crontab.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000225

Additional Details

Responsibility

System Administrator

IA Controls

ECPA-1

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:171
# Default system accounts (with the exception of root) must not be listed in the cron.allow file or must be included in the cron.deny file, if cron.allow does not exist.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.
#
# MANUAL REVIEW REQUIRED -- the module(s) below could not be reconstructed
# into working code from curated SCC reference data, and are excluded from
# the automated result:
#   - textfilecontent54_object (textfilecontent54_test) -- default system accounts (other than root) are not listed in /var/adm/cron/cron.allow: field "subexpression"'s live variable comparison could not be built

# check /var/adm/cron/cron.allow existence
# file_object (file_test)
test_1() {
  test -e '/var/adm/cron/cron.allow' &>/dev/null
}
# check /var/adm/cron/cron.allow is empty
# textfilecontent54_object (textfilecontent54_test)
test_2() {
  ! ( grep -Pq '^([^ 	

]+)[ 	

]*$' '/var/adm/cron/cron.allow' &>/dev/null )
}
# check /var/adm/cron/cron.allow existence
# file_object (file_test)
test_3() {
  test -e '/var/adm/cron/cron.allow' &>/dev/null
}
# check /var/adm/cron/cron.allow existence
# file_object (file_test)
test_4() {
  test -e '/var/adm/cron/cron.allow' &>/dev/null
}
# check /var/adm/cron/cron.allow is not empty
# textfilecontent54_object (textfilecontent54_test)
test_5() {
  ! ( grep -Pq '^([^ 	

]+)[ 	

]*$' '/var/adm/cron/cron.allow' &>/dev/null )
}
# check /var/adm/cron/cron.allow existence
# file_object (file_test)
test_7() {
  test -e '/var/adm/cron/cron.allow' &>/dev/null
}
# check /var/adm/cron/cron.deny existence
# file_object (file_test)
test_8() {
  test -e '/var/adm/cron/cron.deny' &>/dev/null
}
# default system accounts (other than root) are listed in /var/adm/cron/cron.deny
# password_object (password_test)
test_9() {
  ! ( getent passwd .* &>/dev/null )
}

if ( ( test_1 && test_2 ) || ( test_3 && ( test_4 && test_5 ) ) || ( test_7 && ( test_8 && test_9 ) ) ); then
  echo "PASS (automated portion only -- MANUAL REVIEW still required, see notes above)"
else
  echo "FAIL (or see MANUAL REVIEW note above)"
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:171

if [ -e /var/adm/cron/cron.allow ]; then
    default_accounts="bin sys adm"
    if [ "$(cat /var/adm/cron/cron.allow | grep -vE "^$|^root$" | wc -l)" -eq "0" ]; then
        echo "PASS"
        exit 0
    else
        echo "FAIL"
        exit 1
    fi
else
    echo "PASS"
    exit 0
fi

Remediation

Remove default system accounts (such as bin, sys, adm, or others) from the cron.allow file if it exists, or add those accounts to the cron.deny file.