SV-38882r1: All global initialization files must have mode 0644 or less permissive. | AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

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Assessment Title

Rule Text

All global initialization files must have mode 0644 or less permissive.

Description

Discussion Text

Global initialization files are used to configure the user's shell environment upon login. Malicious modification of these files could compromise accounts upon logon.

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

ECLP-1

References

DPMS Target AIX 6.1 DISA DPMS Target AIX 6.1 2176

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.aix11:def:110
# All global initialization files must have mode 0644 or less permissive.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# check /etc/.login file permissions
# file_object (file_test)
test_1() {
  ( (stat -c '%A' '/etc/.login' | awk '{print (substr($0,7,1)=="x" || substr($0,7,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/.login' | awk '{print (substr($0,4,1)=="x" || substr($0,4,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/.login' | awk '{print (substr($0,7,1)=="s" || substr($0,7,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/.login' | awk '{print (substr($0,4,1)=="s" || substr($0,4,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/.login' | awk '{print (substr($0,10,1)=="x" || substr($0,10,1)=="t")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/.login' | awk '{print (substr($0,9,1)=="w")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/.login' | awk '{print (substr($0,6,1)=="w")?"true":"false"}') | grep -qxF 'false' )
}
# check /etc/profile file permissions
# file_object (file_test)
test_2() {
  ( (stat -c '%A' '/etc/profile' | awk '{print (substr($0,7,1)=="x" || substr($0,7,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/profile' | awk '{print (substr($0,4,1)=="x" || substr($0,4,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/profile' | awk '{print (substr($0,7,1)=="s" || substr($0,7,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/profile' | awk '{print (substr($0,4,1)=="s" || substr($0,4,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/profile' | awk '{print (substr($0,10,1)=="x" || substr($0,10,1)=="t")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/profile' | awk '{print (substr($0,9,1)=="w")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/profile' | awk '{print (substr($0,6,1)=="w")?"true":"false"}') | grep -qxF 'false' )
}
# check /etc/bashrc file permissions
# file_object (file_test)
test_3() {
  ( (stat -c '%A' '/etc/bashrc' | awk '{print (substr($0,7,1)=="x" || substr($0,7,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/bashrc' | awk '{print (substr($0,4,1)=="x" || substr($0,4,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/bashrc' | awk '{print (substr($0,7,1)=="s" || substr($0,7,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/bashrc' | awk '{print (substr($0,4,1)=="s" || substr($0,4,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/bashrc' | awk '{print (substr($0,10,1)=="x" || substr($0,10,1)=="t")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/bashrc' | awk '{print (substr($0,9,1)=="w")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/bashrc' | awk '{print (substr($0,6,1)=="w")?"true":"false"}') | grep -qxF 'false' )
}
# check /etc/environment file permissions
# file_object (file_test)
test_4() {
  ( (stat -c '%A' '/etc/environment' | awk '{print (substr($0,7,1)=="x" || substr($0,7,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/environment' | awk '{print (substr($0,4,1)=="x" || substr($0,4,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/environment' | awk '{print (substr($0,7,1)=="s" || substr($0,7,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/environment' | awk '{print (substr($0,4,1)=="s" || substr($0,4,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/environment' | awk '{print (substr($0,10,1)=="x" || substr($0,10,1)=="t")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/environment' | awk '{print (substr($0,9,1)=="w")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/environment' | awk '{print (substr($0,6,1)=="w")?"true":"false"}') | grep -qxF 'false' )
}
# check /etc/security/environ file permissions
# file_object (file_test)
test_5() {
  ( (stat -c '%A' '/etc/security/environ' | awk '{print (substr($0,7,1)=="x" || substr($0,7,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/security/environ' | awk '{print (substr($0,4,1)=="x" || substr($0,4,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/security/environ' | awk '{print (substr($0,7,1)=="s" || substr($0,7,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/security/environ' | awk '{print (substr($0,4,1)=="s" || substr($0,4,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/security/environ' | awk '{print (substr($0,10,1)=="x" || substr($0,10,1)=="t")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/security/environ' | awk '{print (substr($0,9,1)=="w")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/security/environ' | awk '{print (substr($0,6,1)=="w")?"true":"false"}') | grep -qxF 'false' )
}
# check /etc/security/.profile file permissions
# file_object (file_test)
test_6() {
  ( (stat -c '%A' '/etc/security/.profile' | awk '{print (substr($0,7,1)=="x" || substr($0,7,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/security/.profile' | awk '{print (substr($0,4,1)=="x" || substr($0,4,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/security/.profile' | awk '{print (substr($0,7,1)=="s" || substr($0,7,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/security/.profile' | awk '{print (substr($0,4,1)=="s" || substr($0,4,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/security/.profile' | awk '{print (substr($0,10,1)=="x" || substr($0,10,1)=="t")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/security/.profile' | awk '{print (substr($0,9,1)=="w")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/security/.profile' | awk '{print (substr($0,6,1)=="w")?"true":"false"}') | grep -qxF 'false' )
}
# check /etc/csh.login file permissions
# file_object (file_test)
test_7() {
  ( (stat -c '%A' '/etc/csh.login' | awk '{print (substr($0,7,1)=="x" || substr($0,7,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/csh.login' | awk '{print (substr($0,4,1)=="x" || substr($0,4,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/csh.login' | awk '{print (substr($0,7,1)=="s" || substr($0,7,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/csh.login' | awk '{print (substr($0,4,1)=="s" || substr($0,4,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/csh.login' | awk '{print (substr($0,10,1)=="x" || substr($0,10,1)=="t")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/csh.login' | awk '{print (substr($0,9,1)=="w")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/csh.login' | awk '{print (substr($0,6,1)=="w")?"true":"false"}') | grep -qxF 'false' )
}
# check /etc/csh.cshrc file permissions
# file_object (file_test)
test_8() {
  ( (stat -c '%A' '/etc/csh.cshrc' | awk '{print (substr($0,7,1)=="x" || substr($0,7,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/csh.cshrc' | awk '{print (substr($0,4,1)=="x" || substr($0,4,1)=="s")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/csh.cshrc' | awk '{print (substr($0,7,1)=="s" || substr($0,7,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/csh.cshrc' | awk '{print (substr($0,4,1)=="s" || substr($0,4,1)=="S")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/csh.cshrc' | awk '{print (substr($0,10,1)=="x" || substr($0,10,1)=="t")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/csh.cshrc' | awk '{print (substr($0,9,1)=="w")?"true":"false"}') | grep -qxF 'false' ) && ( (stat -c '%A' '/etc/csh.cshrc' | awk '{print (substr($0,6,1)=="w")?"true":"false"}') | grep -qxF 'false' )
}

if ( test_1 && test_2 && test_3 && test_4 && test_5 && test_6 && test_7 && test_8 ); 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.fso.aix11:def:110
if [ ! -f "/etc/.login" ]; then echo "PASS"; exit 0; fi
if [ ! -r "/etc/.login" ] || [ ! -w "/etc/.login" ] || [ -x "/etc/.login" ]; then echo "FAIL"; exit 1; fi
if [ ! -f "/etc/profile" ]; then echo "PASS"; exit 0; fi
if [ ! -r "/etc/profile" ] || [ ! -w "/etc/profile" ] || [ -x "/etc/profile" ]; then echo "FAIL"; exit 1; fi
if [ ! -f "/etc/bashrc" ]; then echo "PASS"; exit 0; fi
if [ ! -r "/etc/bashrc" ] || [ ! -w "/etc/bashrc" ] || [ -x "/etc/bashrc" ]; then echo "FAIL"; exit 1; fi
echo "PASS"; exit 0

Remediation

Change the mode of the global initialization file(s) to 0444.
# chmod 0444 <global initialization file>