SV-37894r2: Samba must be configured to use encrypted passwords. | Red Hat Enterprise Linux 5 Security Technical Implementation Guide

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Assessment Title

Rule Text

Samba must be configured to use encrypted passwords.

Description

Discussion Text

Samba must be configured to protect authenticators. If Samba passwords are not encrypted for storage, plain-text user passwords may be read by those with access to the Samba password file.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000366

Additional Details

Responsibility

System Administrator

References

DPMS Target Red Hat 5 DISA DPMS Target Red Hat 5 2154

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.rhel11:def:385
# Samba must be configured to use encrypted passwords.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# /etc/samba/smb.conf is configured to use encrypted passwords
# textfilecontent54_object (textfilecontent54_test)
test_1() {
  (sed -En 's/^\s*[Ee][Nn][Cc][Rr][Yy][Pp][Tt]\s*[Pp][Aa][Ss][Ss][Ww][Oo][Rr][Dd][Ss]\s*=\s*(\S+)\s*$/\1/p' '/etc/samba/smb.conf') | grep -qxF 'yes'
}
# samba package is not installed
# rpminfo_object (rpminfo_test)
test_2() {
  ! ( rpm -q --quiet '^samba' &>/dev/null )
}

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.fso.rhel11:def:385


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

if grep -q "^\\s*[Ee][Nn][Cc][Rr][Yy][Pp][Tt]\\s*[Pp][Aa][Ss][Ss][Ww][Oo][Rr][Dd][Ss]\\s*=\\s*yes\\s*$" /etc/samba/smb.conf; then
    echo "PASS"
    exit 0
fi

echo "FAIL"
exit 1

Remediation

Edit the "/etc/samba/smb.conf" file and change the "encrypt passwords" setting to "yes".