RHEL 9 : Red Hat OpenStack Services on OpenShift 18.0.18 (openstack-nova) (RHSA-2026:7884)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2026:7884. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(310913);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/29");

  script_cve_id("CVE-2026-24708");
  script_xref(name:"RHSA", value:"2026:7884");

  script_name(english:"RHEL 9 : Red Hat OpenStack Services on OpenShift 18.0.18 (openstack-nova) (RHSA-2026:7884)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing a security update for Red Hat OpenStack Services on OpenShift 18.0.18 (openstack-
nova).");
  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-2026:7884 advisory.

    OpenStack Compute (nova) is open source software designed
    to provision and manage large networks of virtual machines, creating a
    redundant and scalable cloud computing platform. It gives you the software,
    control panels, and APIs required to orchestrate a cloud, including running
    instances, managing networks, and controlling access through users and
    projects. OpenStack Compute strives to be both hardware and hypervisor
    agnostic, currently supporting a variety of standard hardware
    configurations and seven major hypervisors.

    Security Fix(es):

    * Arbitrary Host File Overwrite via Unconstrained qemu-img Format Handling in OpenStack Nova
    (CVE-2026-24708)

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

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/#important");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2430312");
  # https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7884.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?732e3e11");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2026:7884");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL Red Hat OpenStack Services on OpenShift 18.0.18 (openstack-nova) package based on the guidance in
RHSA-2026:7884.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:S/C:N/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-24708");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(73);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/02/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/29");

  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:openstack-nova");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openstack-nova-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openstack-nova-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openstack-nova-compute");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openstack-nova-conductor");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openstack-nova-migration");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openstack-nova-novncproxy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openstack-nova-scheduler");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openstack-nova-serialproxy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openstack-nova-spicehtml5proxy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python3-nova");
  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/beta/layered/rhel9/x86_64/rhoso-edpm/1/debug',
      'content/beta/layered/rhel9/x86_64/rhoso-edpm/1/os',
      'content/beta/layered/rhel9/x86_64/rhoso-edpm/1/source/SRPMS',
      'content/beta/layered/rhel9/x86_64/rhoso-podified/1/debug',
      'content/beta/layered/rhel9/x86_64/rhoso-podified/1/os',
      'content/beta/layered/rhel9/x86_64/rhoso-podified/1/source/SRPMS',
      'content/beta/layered/rhel9/x86_64/rhoso-tools/18/debug',
      'content/beta/layered/rhel9/x86_64/rhoso-tools/18/os',
      'content/beta/layered/rhel9/x86_64/rhoso-tools/18/source/SRPMS',
      'content/beta/layered/rhel9/x86_64/rhoso/18/debug',
      'content/beta/layered/rhel9/x86_64/rhoso/18/os',
      'content/beta/layered/rhel9/x86_64/rhoso/18/source/SRPMS',
      'content/dist/layered/rhel9/x86_64/rhoso-edpm/1.0/debug',
      'content/dist/layered/rhel9/x86_64/rhoso-edpm/1.0/os',
      'content/dist/layered/rhel9/x86_64/rhoso-edpm/1.0/source/SRPMS',
      'content/dist/layered/rhel9/x86_64/rhoso-podified/1.0/debug',
      'content/dist/layered/rhel9/x86_64/rhoso-podified/1.0/os',
      'content/dist/layered/rhel9/x86_64/rhoso-podified/1.0/source/SRPMS',
      'content/dist/layered/rhel9/x86_64/rhoso-tools/18/debug',
      'content/dist/layered/rhel9/x86_64/rhoso-tools/18/os',
      'content/dist/layered/rhel9/x86_64/rhoso-tools/18/source/SRPMS',
      'content/dist/layered/rhel9/x86_64/rhoso/18.0/debug',
      'content/dist/layered/rhel9/x86_64/rhoso/18.0/os',
      'content/dist/layered/rhel9/x86_64/rhoso/18.0/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'openstack-nova-27.5.2-18.0.20260312122217.c1c6d67.el9ost', 'el_string':'el9ost', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openstack-nova-api-27.5.2-18.0.20260312122217.c1c6d67.el9ost', 'el_string':'el9ost', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openstack-nova-common-27.5.2-18.0.20260312122217.c1c6d67.el9ost', 'el_string':'el9ost', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openstack-nova-compute-27.5.2-18.0.20260312122217.c1c6d67.el9ost', 'el_string':'el9ost', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openstack-nova-conductor-27.5.2-18.0.20260312122217.c1c6d67.el9ost', 'el_string':'el9ost', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openstack-nova-migration-27.5.2-18.0.20260312122217.c1c6d67.el9ost', 'el_string':'el9ost', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openstack-nova-novncproxy-27.5.2-18.0.20260312122217.c1c6d67.el9ost', 'el_string':'el9ost', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openstack-nova-scheduler-27.5.2-18.0.20260312122217.c1c6d67.el9ost', 'el_string':'el9ost', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openstack-nova-serialproxy-27.5.2-18.0.20260312122217.c1c6d67.el9ost', 'el_string':'el9ost', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openstack-nova-spicehtml5proxy-27.5.2-18.0.20260312122217.c1c6d67.el9ost', 'el_string':'el9ost', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'python3-nova-27.5.2-18.0.20260312122217.c1c6d67.el9ost', 'el_string':'el9ost', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'}
    ]
  }
];

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, 'openstack-nova / openstack-nova-api / openstack-nova-common / etc');
}