SV-12532r2: The nosuid option must be configured in the /etc/rmmount.conf file. | SOLARIS 9 SPARC SECURITY TECHNICAL IMPLEMENTATION GUIDE

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Assessment Title

Rule Text

The nosuid option must be configured in the /etc/rmmount.conf file.

Description

Discussion Text

The rmmount.conf file controls the mounting of removable media on a Solaris system. Removable media is not to be trusted with privileged access, and therefore the filesystems must be mounted with the nosuid option, which prevents any executables with the setuid bit set on this filesystem from running with owner privileges.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000225Not mappedCCI-000366

Additional Details

Responsibility

System Administrator

IA Controls

ECPA-1

References

DPMS Target Solaris 9 Sparc DISA DPMS Target Solaris 9 Sparc 21

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.solaris11:def:5
# The nosuid option must be configured in the /etc/rmmount.conf file.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# /etc/rmmount.conf configuration
# textfilecontent54_object (textfilecontent54_test)
test_1() {
  (sed -En 's/^[ 	]*mount[^
]+-o([^#
]+)$/\1/p' '/etc/rmmount.conf') | grep -Pq '(^| )nosuid( |$)'
}

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.solaris11:def:5 DISA STIG / SCAP compliance check


if [ ! -f "/etc/rmmount.conf" ]; then echo "PASS"; exit 0; fi

grep -q "^[ \t]*mount[^\n]+-o[^\n]*nosuid[^\n]*$" /etc/rmmount.conf || { echo "FAIL"; exit 1; }

echo "PASS"; exit 0

Remediation

Edit /etc/rmmount.conf and add the nosuid mount option to the configuration.