Debian dla-4486 : nova-api - security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-4486. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(299718);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/21");

  script_cve_id("CVE-2026-24708");

  script_name(english:"Debian dla-4486 : nova-api - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4486
advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4486-1                [email protected]
    https://www.debian.org/lts/security/          Carlos Henrique Lima Melara
    February 20, 2026                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : nova
    Version        : 2:22.4.0-1~deb11u7
    CVE ID         : CVE-2026-24708
    Debian Bug     : 1128294

    Dan Smith discovered that nova, a cloud computing fabric controller,
    calls qemu-img without format restrictions for resize, which may result
    in unsafe image resize operations that could destroy data on the host
    system. Only compute nodes using the Flat image backend are affected.

    For Debian 11 bullseye, this problem has been fixed in version
    2:22.4.0-1~deb11u7.

    We recommend that you upgrade your nova packages.

    For the detailed security status of nova please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/nova

    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS
    Attachment:
    signature.asc
    Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian 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://security-tracker.debian.org/tracker/source-package/nova");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-24708");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/nova");
  script_set_attribute(attribute:"solution", value:
"Upgrade the nova-api packages.");
  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_set_attribute(attribute:"vuln_publication_date", value:"2026/02/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/02/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/02/21");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nova-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nova-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nova-compute");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nova-compute-ironic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nova-compute-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nova-compute-lxc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nova-compute-qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nova-conductor");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nova-consoleproxy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nova-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nova-scheduler");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nova-volume");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-nova");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian 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");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/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);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);

var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(11)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0', 'Debian ' + debian_release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);

var pkgs = [
    {'release': '11.0', 'prefix': 'nova-api', 'reference': '2:22.4.0-1~deb11u7'},
    {'release': '11.0', 'prefix': 'nova-common', 'reference': '2:22.4.0-1~deb11u7'},
    {'release': '11.0', 'prefix': 'nova-compute', 'reference': '2:22.4.0-1~deb11u7'},
    {'release': '11.0', 'prefix': 'nova-compute-ironic', 'reference': '2:22.4.0-1~deb11u7'},
    {'release': '11.0', 'prefix': 'nova-compute-kvm', 'reference': '2:22.4.0-1~deb11u7'},
    {'release': '11.0', 'prefix': 'nova-compute-lxc', 'reference': '2:22.4.0-1~deb11u7'},
    {'release': '11.0', 'prefix': 'nova-compute-qemu', 'reference': '2:22.4.0-1~deb11u7'},
    {'release': '11.0', 'prefix': 'nova-conductor', 'reference': '2:22.4.0-1~deb11u7'},
    {'release': '11.0', 'prefix': 'nova-consoleproxy', 'reference': '2:22.4.0-1~deb11u7'},
    {'release': '11.0', 'prefix': 'nova-doc', 'reference': '2:22.4.0-1~deb11u7'},
    {'release': '11.0', 'prefix': 'nova-scheduler', 'reference': '2:22.4.0-1~deb11u7'},
    {'release': '11.0', 'prefix': 'nova-volume', 'reference': '2:22.4.0-1~deb11u7'},
    {'release': '11.0', 'prefix': 'python3-nova', 'reference': '2:22.4.0-1~deb11u7'}
];

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

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  var tested = deb_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'nova-api / nova-common / nova-compute / nova-compute-ironic / etc');
}