Fortinet Fortigate - Buffer overflow in execute extender command (FG-IR-23-149)

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

include('compat.inc');

if (description)
{
  script_id(179503);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/22");

  script_cve_id("CVE-2023-29182");
  script_xref(name:"IAVA", value:"2023-A-0353-S");

  script_name(english:"Fortinet Fortigate - Buffer overflow in execute extender command (FG-IR-23-149)");

  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-23-149 advisory.

  - A stack-based buffer overflow vulnerability [CWE-121] in Fortinet FortiOS before 7.0.3 allows a privileged
    attacker to execute arbitrary code via specially crafted CLI commands, provided the attacker were able to
    evade FortiOS stack protections. (CVE-2023-29182)

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-23-149");
  script_set_attribute(attribute:"see_also", value:"https://code610.blogspot.com/2023/04/fuzzing-fortigate-7.html");
  script_set_attribute(attribute:"solution", value:
"Please upgrade to FortiOS version 7.4.0 or above

Please upgrade to FortiOS version 7.2.0 or above

Please upgrade to FortiOS version 7.0.4 or above");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:M/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:H/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-2023-29182");

  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:"2023/08/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/08/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/08/08");

  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' : '6.2.0', 'max_version' : '6.2.15', 'fixed_version' : '7.0.4' },
  { 'min_version' : '6.4.0', 'max_version' : '6.4.14', 'fixed_version' : '7.0.4' },
  { 'min_version' : '7.0.0', 'max_version' : '7.0.3', 'fixed_version' : '7.0.4' }
];

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