Fortinet FortiOS 5.2.x < 5.2.23 / 5.4.x < 5.4.6 / 5.6.x < 5.6.1 Web Proxy Disclaimer Response Page Reflected XSS (FG-IR-17-168)

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(104657);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/09/16");

  script_cve_id("CVE-2017-7739");
  script_bugtraq_id(101679);

  script_name(english:"Fortinet FortiOS 5.2.x < 5.2.23 / 5.4.x < 5.4.6 / 5.6.x < 5.6.1 Web Proxy Disclaimer Response Page Reflected XSS (FG-IR-17-168)");
  script_summary(english:"Checks the version of FortiOS.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by a cross-site scripting vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Fortinet FortiOS running on the remote device is 5.2.x
prior to 5.2.12, 5.4.x prior to 5.4.6, or 5.6.x prior to 5.6.1. It is,
therefore, affected by a flaw in the web proxy disclaimer response
page input validation that allows a reflected cross-site scripting
(XSS) attack.");
  script_set_attribute(attribute:"see_also", value:"https://fortiguard.com/psirt/FG-IR-17-168");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Fortinet FortiOS version 5.2.12 / 5.4.6 / 5.6.1 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/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:R/S:C/C:L/I:L/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-2017-7739");

  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:"2017/11/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/11/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/11/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fortinet:fortios");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Firewalls");

  script_copyright(english:"This script is Copyright (C) 2017-2022 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');

app_info = vcf::get_app_info(app:"FortiOS", kb_ver:"Host/Fortigate/version");

vcf::fortios::verify_product_and_model(product_name:'FortiGate');

# 5.2.12 / 5.4.6 / 5.6.1
constraints = [
  { "min_version" : "5.2.0", "fixed_version" : "5.2.12" },
  { "min_version" : "5.4.0", "fixed_version" : "5.4.6" },
  { "min_version" : "5.6.0", "fixed_version" : "5.6.1" }
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING, flags:{xss:true});