RHEL 9 : OpenShift Container Platform 4.20.16 (RHSA-2026:3851)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2026:3851. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(301844);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/11");

  script_cve_id("CVE-2025-61728");
  script_xref(name:"RHSA", value:"2026:3851");

  script_name(english:"RHEL 9 : OpenShift Container Platform 4.20.16 (RHSA-2026:3851)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing a security update for OpenShift Container Platform 4.20.16.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in
the RHSA-2026:3851 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 4.20.16. See the
    following advisory for the container images for this release:

    https://access.redhat.com/errata/RHSA-2026:3855

    Security Fix(es):

    * golang: archive/zip: Excessive CPU consumption when building archive index in archive/zip
    (CVE-2025-61728)

    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 4.20 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/4.20/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 this issue 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/#moderate");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2434431");
  # https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_3851.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bb015d81");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2026:3851");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL OpenShift Container Platform 4.20.16 packages based on the guidance in RHSA-2026:3851.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-61728");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(770);
  script_set_attribute(attribute:"vendor_severity", value:"Moderate");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/01/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:podman");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:podman-docker");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:podman-plugins");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:podman-remote");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:podman-tests");
  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(operator: 'ge', os_version: os_version, rhel_version: '9')) audit(AUDIT_OS_NOT, 'Red Hat 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': '9',
    'repo_relative_urls': [
      'content/dist/layered/rhel9/aarch64/rhocp/4.20/debug',
      'content/dist/layered/rhel9/aarch64/rhocp/4.20/os',
      'content/dist/layered/rhel9/aarch64/rhocp/4.20/source/SRPMS',
      'content/dist/layered/rhel9/ppc64le/rhocp/4.20/debug',
      'content/dist/layered/rhel9/ppc64le/rhocp/4.20/os',
      'content/dist/layered/rhel9/ppc64le/rhocp/4.20/source/SRPMS',
      'content/dist/layered/rhel9/s390x/rhocp/4.20/debug',
      'content/dist/layered/rhel9/s390x/rhocp/4.20/os',
      'content/dist/layered/rhel9/s390x/rhocp/4.20/source/SRPMS',
      'content/dist/layered/rhel9/x86_64/rhocp/4.20/debug',
      'content/dist/layered/rhel9/x86_64/rhocp/4.20/os',
      'content/dist/layered/rhel9/x86_64/rhocp/4.20/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'podman-5.4.0-16.rhaos4.20.el9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'5', 'exists_check':'openshift-hyperkube'},
      {'reference':'podman-docker-5.4.0-16.rhaos4.20.el9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'5', 'exists_check':'openshift-hyperkube'},
      {'reference':'podman-plugins-5.4.0-16.rhaos4.20.el9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'5', 'exists_check':'openshift-hyperkube'},
      {'reference':'podman-remote-5.4.0-16.rhaos4.20.el9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'5', 'exists_check':'openshift-hyperkube'},
      {'reference':'podman-tests-5.4.0-16.rhaos4.20.el9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'5', '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_HOLE,
      extra      : extra
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'podman / podman-docker / podman-plugins / podman-remote / etc');
}