Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : Nova vulnerability (USN-8434-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8434-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(321372);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/03");

  script_cve_id("CVE-2026-46448");
  script_xref(name:"USN", value:"8434-1");

  script_name(english:"Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : Nova vulnerability (USN-8434-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by a
vulnerability as referenced in the USN-8434-1 advisory.

    It was discovered that Nova did not strip internal _nova-prefixed scheduler hints supplied by users on
    instance creation. An attacker could possibly use this issue to bypass Placement resource claims and
    scheduling constraint enforcement.

Tenable has extracted the preceding description block directly from the Ubuntu 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://ubuntu.com/security/notices/USN-8434-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:P/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:L/UI:N/S:C/C:N/I:L/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-2026-46448");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/06/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:25.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:26.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-ajax-console-proxy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-api-metadata");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-api-os-compute");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-api-os-volume");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-cells");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-compute");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-compute-ironic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-compute-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-compute-libvirt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-compute-lxc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-compute-qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-compute-vmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-compute-xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-conductor");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-novncproxy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-scheduler");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-serialproxy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-spiceproxy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nova-volume");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3-nova");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2026 Canonical, Inc. / NASL script (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('22.04' >< os_release || '24.04' >< os_release || '25.10' >< os_release || '26.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 22.04 / 24.04 / 25.10 / 26.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) 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) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);

var pkgs = [
    {'osver': '22.04', 'pkgname': 'nova-ajax-console-proxy', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-api', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-api-metadata', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-api-os-compute', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-api-os-volume', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-cells', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-common', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-compute', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-compute-ironic', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-compute-kvm', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-compute-libvirt', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-compute-lxc', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-compute-qemu', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-compute-vmware', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-compute-xen', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-conductor', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-novncproxy', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-scheduler', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-serialproxy', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-spiceproxy', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'nova-volume', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'python3-nova', 'pkgver': '3:25.2.1-0ubuntu2.11'},
    {'osver': '24.04', 'pkgname': 'nova-ajax-console-proxy', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-api', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-api-metadata', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-api-os-compute', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-api-os-volume', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-cells', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-common', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-compute', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-compute-ironic', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-compute-kvm', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-compute-libvirt', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-compute-lxc', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-compute-qemu', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-compute-vmware', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-compute-xen', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-conductor', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-novncproxy', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-scheduler', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-serialproxy', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-spiceproxy', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'nova-volume', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '24.04', 'pkgname': 'python3-nova', 'pkgver': '3:29.2.0-0ubuntu1.7'},
    {'osver': '25.10', 'pkgname': 'nova-ajax-console-proxy', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-api', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-api-metadata', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-api-os-compute', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-api-os-volume', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-cells', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-common', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-compute', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-compute-ironic', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-compute-kvm', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-compute-libvirt', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-compute-lxc', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-compute-qemu', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-compute-vmware', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-compute-xen', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-conductor', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-novncproxy', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-scheduler', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-serialproxy', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-spiceproxy', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'nova-volume', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '25.10', 'pkgname': 'python3-nova', 'pkgver': '3:32.0.0-0ubuntu1.3'},
    {'osver': '26.04', 'pkgname': 'nova-ajax-console-proxy', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-api', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-api-metadata', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-api-os-compute', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-api-os-volume', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-cells', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-common', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-compute', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-compute-ironic', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-compute-kvm', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-compute-libvirt', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-compute-lxc', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-compute-qemu', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-compute-vmware', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-compute-xen', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-conductor', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-novncproxy', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-scheduler', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-serialproxy', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-spiceproxy', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'nova-volume', 'pkgver': '3:33.0.0-0ubuntu3.1'},
    {'osver': '26.04', 'pkgname': 'python3-nova', 'pkgver': '3:33.0.0-0ubuntu3.1'}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
  if (osver && pkgname && pkgver) {
    if (deb_check(release:osver, prefix:pkgname, reference:pkgver, cves:cves)) flag++;
  }
}

if (flag)
{
  var extra = '';
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'nova-ajax-console-proxy / nova-api / nova-api-metadata / etc');
}