Fortinet Fortigate - Flaws over DHCP and DNS keys encryption scheme (FG-IR-22-080)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(174401);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/04/17");

  script_cve_id("CVE-2022-29054");
  script_xref(name:"IAVA", value:"2023-A-0110-S");

  script_name(english:"Fortinet Fortigate - Flaws over DHCP and DNS keys encryption scheme (FG-IR-22-080)");

  script_set_attribute(attribute:"synopsis", value:
"Fortinet Firewall is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The version of Fortigate installed on the remote host is prior to tested version. It is, therefore, affected by a
vulnerability as referenced in the FG-IR-22-080 advisory.

  - A missing cryptographic steps vulnerability [CWE-325] in the functions that encrypt the DHCP and DNS keys
    in Fortinet FortiOS version 7.2.0, 7.0.0 through 7.0.5, 6.4.0 through 6.4.9, 6.2.x and 6.0.x may allow an
    attacker in possession of the encrypted key to decipher it. (CVE-2022-29054)

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://www.fortiguard.com/psirt/FG-IR-22-080");
  script_set_attribute(attribute:"solution", value:
"Please upgrade to FortiOS version 7.2.1 or above
Please upgrade to FortiOS version 7.0.8 or above
Please upgrade to FortiProxy version 7.2.2 or above
Please upgrade to FortiProxy version 7.0.8 or above");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-29054");

  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:"2023/02/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/02/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/04/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:fortinet:fortiproxy");
  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:"Firewalls");

  script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("fortinet_version.nbin");
  script_require_keys("Host/Fortigate/model", "Host/Fortigate/version");

  exit(0);
}

include('vcf.inc');
include('vcf_extras_fortios.inc');

var app_name = 'Fortigate';
var app_info = vcf::get_app_info(app:app_name, kb_ver:'Host/Fortigate/version');
vcf::fortios::verify_product_and_model(product_name:app_name);

var constraints = [
  { 'min_version' : '6.0.0', 'max_version' : '6.0.16', 'fixed_display' : '7.0.8' },
  { 'min_version' : '6.2.0', 'max_version' : '6.2.14', 'fixed_display' : '7.0.8' },
  { 'min_version' : '6.4.0', 'max_version' : '6.4.12', 'fixed_display' : '7.0.8' },
  { 'min_version' : '7.0.0', 'fixed_version' : '7.0.8' },
  { 'min_version' : '7.2.0', 'fixed_version' : '7.2.1' }
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_NOTE);