SV-271639r1091629: OL 9 file system automount function must be disabled unless required. | Oracle Linux 9 STIG SCAP Benchmark

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Assessment Title

Rule Text

OL 9 file system automount function must be disabled unless required.

Description

Discussion Text

An authentication process resists replay attacks if it is impractical to achieve a successful authentication by recording and replaying a previous authentication message. Satisfies: SRG-OS-000114-GPOS-00059, SRG-OS-000378-GPOS-00163

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

IA Controls

NIST SP 800-53

Not mappedCCI-000778Not mappedCCI-001958

References

DPMS Target Oracle Linux 9 DISA DPMS Target Oracle Linux 9 5680

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.ol9os:def:271639
# OL 9 file system automount function must be disabled unless required.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# The autofs.service is inactive if it exists.
# systemdunitproperty_object (systemdunitproperty_test)
test_1() {
  (systemctl show -p 'ActiveState' --value 'autofs.service') | grep -qxF 'inactive'
}

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.ol9os:def:271639

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

if [ ! -f "/etc/autofs" ] || [ ! -x "/etc/autofs" ]
then
    echo "PASS"
    exit 0
fi

if systemctl is-active --quiet autofs.service
then
    echo "FAIL"
    exit 1
else
    if systemctl is-enabled --quiet autofs.service
    then
        echo "FAIL"
        exit 1
    else
        echo "PASS"
        exit 0
    fi
fi

Remediation

Configure OL 9 to disable and mask the ability to automount devices.

The autofs service can be disabled and masked with the following command:

$ sudo systemctl mask --now autofs.service