SV-216439r958566: The operating system must reveal error messages only to authorized personnel. | Solaris 11 SPARC STIG SCAP Benchmark

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Assessment Title

Rule Text

The operating system must reveal error messages only to authorized personnel.

Description

Discussion Text

Proper file permissions and ownership ensures that only designated personnel in the organization can access error messages.

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

IA Controls

NIST SP 800-53

Not mappedCCI-001314V-48033SV-60905

References

DPMS Target Solaris 11 SPARC DISA DPMS Target Solaris 11 SPARC 4022

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.solaris11:def:115
# The operating system must reveal error messages only to authorized personnel.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# The /var/adm/messages file must be owned by Root and of the Root group. Also, the file permissions must be 640.
# file_object (file_test)
test_1() {
  ( (stat -c '%A' '/var/adm/messages' | awk '{print (substr($0,3,1)=="w")?"true":"false"}') | grep -qxF 'true' ) && ( (stat -c '%A' '/var/adm/messages' | awk '{print (substr($0,7,1)=="x" || substr($0,7,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/var/adm/messages' | awk '{print (substr($0,4,1)=="x" || substr($0,4,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/var/adm/messages' | awk '{print (substr($0,4,1)=="s" || substr($0,4,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/var/adm/messages' | awk '{print (substr($0,10,1)=="x" || substr($0,10,1)=="t")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/var/adm/messages' | awk '{print (substr($0,2,1)=="r")?"true":"false"}') | grep -qxF 'true' ) && ( (stat -c '%A' '/var/adm/messages' | awk '{print (substr($0,8,1)=="r")?"true":"false"}') | grep -qxF 'false' ) && ( [ "$(stat -c '%g' '/var/adm/messages')" -eq 0 ] ) && ( [ "$(stat -c '%u' '/var/adm/messages')" -eq 0 ] ) && ( (stat -c '%A' '/var/adm/messages' | awk '{print (substr($0,7,1)=="s" || substr($0,7,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/var/adm/messages' | awk '{print (substr($0,9,1)=="w")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/var/adm/messages' | awk '{print (substr($0,5,1)=="r")?"true":"false"}') | grep -qxF 'true' ) && ( (stat -c '%A' '/var/adm/messages' | awk '{print (substr($0,6,1)=="w")?"true":"false"}') | grep -qxF 'false' )
}
# The /var/adm folder must be owned by Root and of the System group. Also, the file permissions must be 750.
# file_object (file_test)
test_2() {
  ( (stat -c '%A' '/var/adm' | awk '{print (substr($0,3,1)=="w")?"true":"false"}') | grep -qxF 'true' ) && ( (stat -c '%A' '/var/adm' | awk '{print (substr($0,7,1)=="x" || substr($0,7,1)=="s")?"true":"false"}') | grep -qxF 'true' ) && ( (stat -c '%A' '/var/adm' | awk '{print (substr($0,4,1)=="x" || substr($0,4,1)=="s")?"true":"false"}') | grep -qxF 'true' ) && ( (stat -c '%A' '/var/adm' | awk '{print (substr($0,4,1)=="s" || substr($0,4,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/var/adm' | awk '{print (substr($0,10,1)=="x" || substr($0,10,1)=="t")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/var/adm' | awk '{print (substr($0,2,1)=="r")?"true":"false"}') | grep -qxF 'true' ) && ( (stat -c '%A' '/var/adm' | awk '{print (substr($0,8,1)=="r")?"true":"false"}') | grep -qxF 'false' ) && ( [ "$(stat -c '%g' '/var/adm')" -eq 3 ] ) && ( [ "$(stat -c '%u' '/var/adm')" -eq 0 ] ) && ( (stat -c '%A' '/var/adm' | awk '{print (substr($0,7,1)=="s" || substr($0,7,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/var/adm' | awk '{print (substr($0,9,1)=="w")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/var/adm' | awk '{print (substr($0,5,1)=="r")?"true":"false"}') | grep -qxF 'true' ) && ( (stat -c '%A' '/var/adm' | awk '{print (substr($0,6,1)=="w")?"true":"false"}') | grep -qxF 'false' )
}

if ( test_1 && test_2 ); 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.solaris11:def:115
if [ ! -f "/var/adm/messages" ]; then echo "PASS"; exit 0; fi
if [ ! -f "/var/adm" ]; then echo "PASS"; exit 0; fi
if [ "$(stat -c "%a /var/adm/messages")" != "640" ]; then echo "FAIL"; exit 1; fi
if [ "$(stat -c "%a /var/adm")" != "750" ]; then echo "FAIL"; exit 1; fi
if [ "$(stat -c "%u /var/adm/messages")" != "0" ]; then echo "FAIL"; exit 1; fi
if [ "$(stat -c "%g /var/adm/messages")" != "0" ]; then echo "FAIL"; exit 1; fi
if [ "$(stat -c "%U /var/adm")" != "root" ]; then echo "FAIL"; exit 1; fi
if [ "$(stat -c "%G /var/adm")" != "sys" ]; then echo "FAIL"; exit 1; fi
echo "PASS"; exit 0

Remediation

The root role is required.

Change the permissions and owner on the /var/adm/messages file:

# chmod 640 /var/adm/messages
# chown root /var/adm/messages
# chgrp root /var/adm/messages

Change the permissions and owner on the /var/adm directory:

# chmod 750 /var/adm
# chown root /var/adm
# chgrp sys /var/adm