SV-230533r1017295: The Trivial File Transfer Protocol (TFTP) server package must not be installed if not required for RHEL 8 operational support. | Red Hat Enterprise Linux 8 STIG SCAP Benchmark

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Assessment Title

Rule Text

The Trivial File Transfer Protocol (TFTP) server package must not be installed if not required for RHEL 8 operational support.

Description

Discussion Text

If TFTP is required for operational support (such as the transmission of router configurations) its use must be documented with the Information System Security Officer (ISSO), restricted to only authorized personnel, and have access control rules established.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000366

References

DPMS Target Red Hat Enterprise Linux 8 DISA DPMS Target Red Hat Enterprise Linux 8 2921

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.rhel8os:def:230533
# The Trivial File Transfer Protocol (TFTP) server package must not be installed if not required for RHEL 8 operational support.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# The tftp-server package is absent.
# rpminfo_object (rpminfo_test)
test_1() {
  ! ( rpm -q --quiet 'tftp-server' &>/dev/null )
}

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.rhel8os:def:230533

if ! command -v rpm &> /dev/null; then
  echo "FAIL"
  exit 1
fi

if rpm -q tftp-server &> /dev/null; then
  echo "FAIL"
  exit 1
fi

echo "PASS"
exit 0

Remediation

Remove the TFTP package from the system with the following command:

$ sudo yum remove tftp-server