Fortinet Fortigate - Ability to modify privileges from Custom to Read-Write (FG-IR-22-346)

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

include('compat.inc');

if (description)
{
  script_id(174404);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/04/17");

  script_cve_id("CVE-2022-38378");
  script_xref(name:"IAVA", value:"2023-A-0110-S");

  script_name(english:"Fortinet Fortigate - Ability to modify privileges from Custom to Read-Write (FG-IR-22-346)");

  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-22-346 advisory.

  - An improper privilege management vulnerability [CWE-269] in Fortinet FortiOS version 7.2.0 and before
    7.0.7 and FortiProxy version 7.2.0 through 7.2.1 and before 7.0.7 allows an attacker that has access to
    the admin profile section (System subsection Administrator Users) to modify their own profile and upgrade
    their privileges to Read Write via CLI or GUI commands. (CVE-2022-38378)

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-22-346");
  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 Workaround : Avoid administrative
profiles that mix custom privileges permissions on a section and read-write permissions on the system section.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:M/C:C/I:C/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:H/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:"cvss_score_source", value:"CVE-2022-38378");

  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');

# If there's a workaround specified in the advisory we're making this require paranoid.
if (report_paranoia < 2) audit(AUDIT_PARANOID);

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_WARNING);