SV-227926r603266: The smb.conf file must be group-owned by root, bin, or sys. | Solaris 10 X86 STIG SCAP Benchmark

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Assessment Title

Rule Text

The smb.conf file must be group-owned by root, bin, or sys.

Description

Discussion Text

If the group owner of the smb.conf file is not root or a system group, the file may be maliciously modified and the Samba configuration could be compromised.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000366V-1056SV-39890

References

DPMS Target Solaris 10 X86 DISA DPMS Target Solaris 10 X86 4061

Checks

DISA STIG (Manual Reference)

Check the group ownership of the smb.conf file. Default locations for this file include /etc, /etc/sfw, /etc/samba, and /etc/sfw/samba.  If the system has Samba installed in non-standard locations, also check the smb.conf in those locations.

Procedure:

# ls -l /etc/smb.conf /etc/sfw/smb.conf /etc/samba/smb.conf /etc/sfw/samba/smb.conf

If an smb.conf file is not group-owned by root, bin, or sys, this is a finding.

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.

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.solaris11:def:360
files=("/etc/smb.conf" "/etc/sfw/smb.conf" "/etc/samba/smb.conf" "/etc/sfw/samba/smb.conf")
for path in "${files[@]}"; do
    if [ ! -f "$path" ]; then continue; fi
    gid=$(stat -c "%G" "$path")
    if [ $gid -eq 0 ] || [ $gid -eq 2 ] || [ $gid -eq 3 ]; then
        echo "PASS"
        exit 0
    fi
done
echo "FAIL"
exit 1

Remediation

Change the group owner of the smb.conf file.

Procedure:

# chgrp root /etc/smb.conf /etc/sfw/smb.conf /etc/samba/smb.conf /etc/sfw/samba/smb.conf