Fortinet Fortigate - Plain-text credentials in GET request via SSL VPN web portal (FG-IR-23-120)

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

include('compat.inc');

if (description)
{
  script_id(182950);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/22");

  script_cve_id("CVE-2023-37935");
  script_xref(name:"IAVA", value:"2023-A-0551-S");

  script_name(english:"Fortinet Fortigate - Plain-text credentials in GET request via SSL VPN web portal (FG-IR-23-120)");

  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-23-120 advisory.

  - A use of GET request method with sensitive query strings vulnerability in Fortinet FortiOS 7.0.0 - 7.0.12,
    7.2.0 - 7.2.5 and 7.4.0 allows an attacker to view plaintext passwords of remote services such as RDP or
    VNC, if the attacker is able to read the GET requests to those services. (CVE-2023-37935)

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-23-120");
  script_set_attribute(attribute:"solution", value:
"Please upgrade to FortiOS version 7.4.1 or above
Please upgrade to FortiOS version 7.2.6 or above
Please upgrade to upcoming FortiOS version 7.0.13 or above");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/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:N/AC:L/PR:N/UI:N/S:U/C:H/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-2023-37935");

  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:"2023/10/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/10/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/10/12");

  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' : '7.0.0', 'max_version' : '7.0.12', 'fixed_version' : '7.0.13' },
  { 'min_version' : '7.2.0', 'max_version' : '7.2.5', 'fixed_version' : '7.2.6' },
  { 'min_version' : '7.4.0', 'max_version' : '7.4.0', 'fixed_version' : '7.4.1' }
];

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