SV-281084r1268226: RHEL 10 must enforce that all local initialization files configured by systemd-tmpfiles have mode "0600" or less permissive. | Red Hat Enterprise Linux 10 STIG SCAP Benchmark

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Assessment Title

Rule Text

RHEL 10 must enforce that all local initialization files configured by systemd-tmpfiles have mode "0600" or less permissive.

Description

Discussion Text

Excessive permissions on local interactive user home directories may allow unauthorized access to user files by other users.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000213

References

DPMS Target Red Hat Enterprise Linux 10 DISA DPMS Target Red Hat Enterprise Linux 10 5733

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.rhel10os:def:281084
# RHEL 10 must enforce that all local initialization files configured by systemd-tmpfiles have mode "0600" 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.

# textfilecontent54_object (textfilecontent54_test)
test_1() {
  (grep -rhP --include='*.conf' '^(?:\s*\S+\s+){2}(\S+)(?:\s+\S+){3}\s+/usr/share/rootfiles/' '/etc/tmpfiles.d' | sed -En 's/^(?:\s*\S+\s+){2}(\S+)(?:\s+\S+){3}\s+\/usr\/share\/rootfiles\//\1/p') | grep -Pq '^0?[0246]00$'
}

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 Definition: oval:mil.disa.stig.rhel10os:def:281084

if [ ! -d "/etc/tmpfiles.d" ]; then echo "PASS"; exit 0; fi
for file in /etc/tmpfiles.d/*.conf; do
    if [ -f "$file" ]; then
        if grep -q '^C[[:space:]][^0-7]*0600' "$file"; then continue; else echo "FAIL"; exit 1; fi
    fi
done
echo "PASS"
exit 0

Remediation

Configure RHEL 10 to enforce that all local initialization files configured by systemd-tmpfiles have mode "0600" or less permissive.

Ensure the following lines are in a ".conf" file under "/etc/tmpfiles.d/":
 
C /root/.bash_logout   600 root root - /usr/share/rootfiles/.bash_logout
C /root/.bash_profile  600 root root - /usr/share/rootfiles/.bash_profile
C /root/.bashrc        600 root root - /usr/share/rootfiles/.bashrc
C /root/.cshrc         600 root root - /usr/share/rootfiles/.cshrc
C /root/.tcshrc        600 root root - /usr/share/rootfiles/.tcshrc