RHEL 8 / 9 : OpenShift Container Platform 4.18.31 (RHSA-2026:0331)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2026:0331. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(287947);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/01/15");

  script_cve_id("CVE-2025-31133", "CVE-2025-52565", "CVE-2025-52881");
  script_xref(name:"RHSA", value:"2026:0331");

  script_name(english:"RHEL 8 / 9 : OpenShift Container Platform 4.18.31 (RHSA-2026:0331)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for OpenShift Container Platform 4.18.31.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 8 / 9 host has a package installed that is affected by multiple vulnerabilities as
referenced in the RHSA-2026:0331 advisory.

    Red Hat OpenShift Container Platform is Red Hat's cloud computing
    Kubernetes application platform solution designed for on-premise or private
    cloud deployments.

    This advisory contains the RPM packages for Red Hat OpenShift Container
    Platform 4.18.31. See the following advisory for the container images for
    this release:

    https://access.redhat.com/errata/RHSA-2026-338

    Security Fix(es):

    * runc: container escape via 'masked path' abuse due to mount race
    conditions (CVE-2025-31133)
    * runc: container escape with malicious config due to /dev/console mount
    and related races (CVE-2025-52565)
    * runc: opencontainers/selinux: container escape and denial of service due
    to arbitrary write gadgets and procfs write redirects (CVE-2025-52881)

    For more details about the security issue(s), including the impact, a CVSS
    score, acknowledgments, and other related information, refer to the CVE
    page(s) listed in the References section.

    All OpenShift Container Platform 4.18 users are advised to upgrade to these
    updated packages and images when they are available in the appropriate
    release channel. To check for available updates, use the OpenShift CLI (oc)
    or web console. Instructions for upgrading a cluster are available at
    https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html-
    single/updating_clusters/index#updating-cluster-cli.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#important");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2404705");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2404708");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2404715");
  # https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_0331.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ffa00496");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2026:0331");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL OpenShift Container Platform 4.18.31 packages based on the guidance in RHSA-2026:0331.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-52881");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2025-31133");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2025-52565");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(59);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/11/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/15");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:runc");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Red Hat Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "redhat_repos.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include('rpm2.inc');
include('rhel.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'Red Hat' >!< os_product) audit(AUDIT_OS_NOT, 'Red Hat');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
if (!rhel_check_release_list(operator: 'ge', os_version: os_version, rhel_versions: ['8','9'])) audit(AUDIT_OS_NOT, 'Red Hat 8.x / 9.x', 'Red Hat ' + os_version);

if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);

var constraints = [
  {
    'release': '8',
    'repo_relative_urls': [
      'content/dist/layered/rhel8/aarch64/rhocp/4.18/debug',
      'content/dist/layered/rhel8/aarch64/rhocp/4.18/os',
      'content/dist/layered/rhel8/aarch64/rhocp/4.18/source/SRPMS',
      'content/dist/layered/rhel8/ppc64le/rhocp/4.18/debug',
      'content/dist/layered/rhel8/ppc64le/rhocp/4.18/os',
      'content/dist/layered/rhel8/ppc64le/rhocp/4.18/source/SRPMS',
      'content/dist/layered/rhel8/s390x/rhocp/4.18/debug',
      'content/dist/layered/rhel8/s390x/rhocp/4.18/os',
      'content/dist/layered/rhel8/s390x/rhocp/4.18/source/SRPMS',
      'content/dist/layered/rhel8/x86_64/rhocp/4.18/debug',
      'content/dist/layered/rhel8/x86_64/rhocp/4.18/os',
      'content/dist/layered/rhel8/x86_64/rhocp/4.18/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'runc-1.2.9-1.rhaos4.18.el8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'4', 'exists_check':'openshift-hyperkube'}
    ]
  },
  {
    'release': '9',
    'repo_relative_urls': [
      'content/dist/layered/rhel9/aarch64/rhocp/4.18/debug',
      'content/dist/layered/rhel9/aarch64/rhocp/4.18/os',
      'content/dist/layered/rhel9/aarch64/rhocp/4.18/source/SRPMS',
      'content/dist/layered/rhel9/ppc64le/rhocp/4.18/debug',
      'content/dist/layered/rhel9/ppc64le/rhocp/4.18/os',
      'content/dist/layered/rhel9/ppc64le/rhocp/4.18/source/SRPMS',
      'content/dist/layered/rhel9/s390x/rhocp/4.18/debug',
      'content/dist/layered/rhel9/s390x/rhocp/4.18/os',
      'content/dist/layered/rhel9/s390x/rhocp/4.18/source/SRPMS',
      'content/dist/layered/rhel9/x86_64/rhocp/4.18/debug',
      'content/dist/layered/rhel9/x86_64/rhocp/4.18/os',
      'content/dist/layered/rhel9/x86_64/rhocp/4.18/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'runc-1.2.9-1.rhaos4.18.el9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'4', 'exists_check':'openshift-hyperkube'}
    ]
  }
];

var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var repo_relative_urls;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }

  if (!empty_or_null(constraint['repo_relative_urls'])) repo_relative_urls = constraint['repo_relative_urls'];

  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
        (applicable_repo_urls || (!exists_check || rpm_exists(rpm:exists_check))) &&
        rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}

if (flag)
{
  var extra = NULL;
  if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = rpm_report_get() + redhat_report_repo_caveat();
  else extra = rpm_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : extra
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'runc');
}