Debian dla-4735 : neutron-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-4735. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(334973);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/14");

  script_cve_id("CVE-2026-55707");
  script_xref(name:"IAVB", value:"2026-B-0221");

  script_name(english:"Debian dla-4735 : neutron-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 12 host has packages installed that are affected by a vulnerability as referenced in the dla-4735
advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4735-1                [email protected]
    https://www.debian.org/lts/security/               Santiago Ruano Rincn
    August 12, 2026                               https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : neutron
    Version        : 2:21.0.0-7+deb12u1
    CVE ID         : CVE-2026-55707
    Debian Bug     : 1142937 1143170

    Multiple vulnerabilities were discovered in Neutron, the OpenStack virtual
    network service. These vulnerabilities were reported by Tim Shephard from
    roiai.ca.

    CVE-2026-55707

        A project member can onboard subnets from another project's shared network into
        their own subnetpool, mutating the victim's persistent subnet state and
        altering L3 routing, NAT, and address-scope behavior for victim routers. Only
        deployments with shared or RBAC-shared networks and the subnetpool onboarding
        extension enabled are affected.

    Not assigned yet

        A project member can read or modify another project's sub-resource by
        substituting their own parent resource ID in URL used in APIs. For
        conntrack helpers, deletion is also possible. The attack requires
        knowing the victim's sub-resource UUID, which is a random UUIDv4 that
        cannot be enumerated through the API.

    For Debian 12 bookworm, this problem has been fixed in version
    2:21.0.0-7+deb12u1.

    We recommend that you upgrade your neutron packages.

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

    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/neutron");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-55707");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/neutron");
  script_set_attribute(attribute:"solution", value:
"Upgrade the neutron-api packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-55707");

  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:"2026/08/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:neutron-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:neutron-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:neutron-dhcp-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:neutron-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:neutron-l3-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:neutron-linuxbridge-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:neutron-macvtap-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:neutron-metadata-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:neutron-metering-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:neutron-openvswitch-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:neutron-ovn-metadata-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:neutron-plugin-nec-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:neutron-rpc-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:neutron-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:neutron-sriov-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-neutron");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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:"^(12)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 12.0', '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': '12.0', 'prefix': 'neutron-api', 'reference': '2:21.0.0-7+deb12u1'},
    {'release': '12.0', 'prefix': 'neutron-common', 'reference': '2:21.0.0-7+deb12u1'},
    {'release': '12.0', 'prefix': 'neutron-dhcp-agent', 'reference': '2:21.0.0-7+deb12u1'},
    {'release': '12.0', 'prefix': 'neutron-doc', 'reference': '2:21.0.0-7+deb12u1'},
    {'release': '12.0', 'prefix': 'neutron-l3-agent', 'reference': '2:21.0.0-7+deb12u1'},
    {'release': '12.0', 'prefix': 'neutron-linuxbridge-agent', 'reference': '2:21.0.0-7+deb12u1'},
    {'release': '12.0', 'prefix': 'neutron-macvtap-agent', 'reference': '2:21.0.0-7+deb12u1'},
    {'release': '12.0', 'prefix': 'neutron-metadata-agent', 'reference': '2:21.0.0-7+deb12u1'},
    {'release': '12.0', 'prefix': 'neutron-metering-agent', 'reference': '2:21.0.0-7+deb12u1'},
    {'release': '12.0', 'prefix': 'neutron-openvswitch-agent', 'reference': '2:21.0.0-7+deb12u1'},
    {'release': '12.0', 'prefix': 'neutron-ovn-metadata-agent', 'reference': '2:21.0.0-7+deb12u1'},
    {'release': '12.0', 'prefix': 'neutron-plugin-nec-agent', 'reference': '2:21.0.0-7+deb12u1'},
    {'release': '12.0', 'prefix': 'neutron-rpc-server', 'reference': '2:21.0.0-7+deb12u1'},
    {'release': '12.0', 'prefix': 'neutron-server', 'reference': '2:21.0.0-7+deb12u1'},
    {'release': '12.0', 'prefix': 'neutron-sriov-agent', 'reference': '2:21.0.0-7+deb12u1'},
    {'release': '12.0', 'prefix': 'python3-neutron', 'reference': '2:21.0.0-7+deb12u1'}
];

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, 'neutron-api / neutron-common / neutron-dhcp-agent / neutron-doc / etc');
}