Fortinet Fortigate - Out-of-bound write in CLI (FG-IR-22-494)

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

include('compat.inc');

if (description)
{
  script_id(177127);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/22");

  script_cve_id("CVE-2023-22639");
  script_xref(name:"IAVA", value:"2023-A-0281-S");

  script_name(english:"Fortinet Fortigate - Out-of-bound write in CLI (FG-IR-22-494)");

  script_set_attribute(attribute:"synopsis", value:
"Fortinet Firewall is affected by a privilege escalation.");
  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-22-494 advisory.

  - A out-of-bounds write in Fortinet FortiOS version 7.2.0 through 7.2.3, FortiOS version 7.0.0 through
    7.0.10, FortiOS version 6.4.0 through 6.4.12, FortiOS all versions 6.2, FortiOS all versions 6.0,
    FortiProxy version 7.2.0 through 7.2.2, FortiProxy version 7.0.0 through 7.0.8, FortiProxy all versions
    2.0, FortiProxy all versions 1.2, FortiProxy all versions 1.1, FortiProxy all versions 1.0 allows attacker
    to escalation of privilege via specifically crafted commands. (CVE-2023-22639)

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-22-494");
  script_set_attribute(attribute:"solution", value:
"Please upgrade to FortiOS version 7.4.0 or above
Please upgrade to FortiOS version 7.2.4 or above
Please upgrade to FortiOS version 7.0.11 or above
Please upgrade to FortiOS version 6.4.13 or above
Please upgrade to FortiProxy version 7.2.3 or above
Please upgrade to FortiProxy version 7.0.9 or above");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:C/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:L/AC:L/PR:L/UI:N/S:U/C:H/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-2023-22639");

  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:"2023/06/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/06/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/06/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fortinet:fortios");
  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) 2023-2024 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_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' : '6.0.17', 'fixed_version' : '6.4.13' },
  { 'min_version' : '6.2.0', 'max_version' : '6.2.15', 'fixed_version' : '6.4.13' },
  { 'min_version' : '6.4.0', 'max_version' : '6.4.12', 'fixed_version' : '6.4.13' },
  { 'min_version' : '7.0.0', 'max_version' : '7.0.10', 'fixed_version' : '7.0.11' },
  { 'min_version' : '7.2.0', 'max_version' : '7.2.3', 'fixed_version' : '7.2.4' }
];

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