SV-257777r1155676: RHEL 9 must be a vendor-supported release. | Red Hat Enterprise Linux 9 STIG SCAP Benchmark

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Assessment Title

Rule Text

RHEL 9 must be a vendor-supported release.

Description

Discussion Text

An operating system release is considered "supported" if the vendor continues to provide security patches for the product. With an unsupported release, it will not be possible to resolve security issues discovered in the system software. End Of Life dates for Red Hat Linux 9 releases are as follows: Current end of Full Support for Red Hat Linux 9 is 31 May 2027. Current end of Maintenance Support for Red Hat Linux 9 is 31 May 3032. Current end of Extended Life Cycle Support (ELS) for Red Hat Linux 9 is 31 May 2035.

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 9 DISA DPMS Target Red Hat Enterprise Linux 9 5551

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.rhel9os:def:257777
# RHEL 9 must be a vendor-supported release.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# The RHEL 9 minor version is supported.
# textfilecontent54_object (textfilecontent54_test)
test_1() {
  ( [ "$(sed -En 's/^\s*Red Hat Enterprise Linux release 9\.(\d+)/\1/p' '/etc/redhat-release')" -eq 7 ] ) || ( [ "$(sed -En 's/^\s*Red Hat Enterprise Linux release 9\.(\d+)/\1/p' '/etc/redhat-release')" -eq 8 ] ) || ( [ "$(sed -En 's/^\s*Red Hat Enterprise Linux release 9\.(\d+)/\1/p' '/etc/redhat-release')" -eq 9 ] ) || ( [ "$(sed -En 's/^\s*Red Hat Enterprise Linux release 9\.(\d+)/\1/p' '/etc/redhat-release')" -eq 10 ] )
}

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.rhel9os:def:257777
if [ ! -f "/etc/redhat-release" ]; then echo "PASS"; exit 0; fi
release=$(grep -oP '^Red Hat Enterprise Linux release 9\.\d+' /etc/redhat-release)
if [ -n "$release" ] && [[ "$release" =~ ^(Red Hat Enterprise Linux release 9\.[789]|10)$ ]]; then echo "PASS"; exit 0; else echo "FAIL"; exit 1; fi

Remediation

Upgrade to a supported version of RHEL 9.