SV-204493r991589: The Red Hat Enterprise Linux operating system must be configured so that a separate file system is used for user home directories (such as /home or an equivalent). | Red Hat Enterprise Linux 7 STIG SCAP Benchmark

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Assessment Title

Rule Text

The Red Hat Enterprise Linux operating system must be configured so that a separate file system is used for user home directories (such as /home or an equivalent).

Description

Discussion Text

The use of separate file systems for different paths can protect the system from failures resulting from a file system becoming full or failing.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000366SV-86683V-72059

References

DPMS Target Red Hat Enterprise Linux 7 DISA DPMS Target Red Hat Enterprise Linux 7 2899

Checks

DISA STIG (Manual Reference)

Verify that a separate file system/partition has been created for non-privileged local interactive user home directories.

Check the home directory assignment for all non-privileged users (those with a UID of 1000 or greater) on the system with the following command:

# awk -F: '($3>=1000)&&($7 !~ /nologin/){print $1, $3, $6, $7}' /etc/passwd

adamsj 1000 /home/adamsj /bin/bash
jacksonm 1001 /home/jacksonm /bin/bash
smithj 1002 /home/smithj /bin/bash

The output of the command will give the directory/partition that contains the home directories for the non-privileged users on the system (in this example, /home) and users' shell. All accounts with a valid shell (such as /bin/bash) are considered interactive users.

Check that a file system/partition has been created for the non-privileged interactive users with the following command:

Note: The partition of /home is used in the example.

# grep /home /etc/fstab
UUID=333ada18    /home                   ext4    noatime,nobarrier,nodev  1 2

If a separate entry for the file system/partition that contains the non-privileged interactive users' home directories does not exist, this is a finding.

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.stig.rhel7:def:1311
# The Red Hat Enterprise Linux operating system must be configured so that a separate file system is used for user home directories (such as /home or an equivalent).
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# /home on own partition
# partition_object (partition_test)
test_1() {
  findmnt -n -o FSTYPE,OPTIONS /home &>/dev/null
}

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 Definition: oval:mil.disa.stig.rhel7:def:1311
if [ -n "$(stat -f -c %T /home 2>/dev/null)" ] && [ "$(df -P /home | grep -v '^Filesystem' | awk '{print $NF}' | tr -d'')" != "$(df -P | grep -v '^Filesystem' | awk '{print $NF}' | tr -d'')" ]; then echo "PASS"; exit 0; else echo "FAIL"; exit 1; fi

Remediation

Migrate the "/home" directory onto a separate file system/partition.