WordPress W3 Total Cache Plugin < 2.1.4 XSS Vulnerability

# Copyright (C) 2022 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

CPE = "cpe:/a:boldgrid:w3_total_cache";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.127057");
  script_version("2022-07-19T10:11:08+0000");
  script_tag(name:"last_modification", value:"2022-07-19 10:11:08 +0000 (Tue, 19 Jul 2022)");
  script_tag(name:"creation_date", value:"2022-06-23 12:58:25 +0000 (Thu, 23 Jun 2022)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-07-28 13:22:00 +0000 (Wed, 28 Jul 2021)");

  script_cve_id("CVE-2021-24436");

  script_tag(name:"qod_type", value:"remote_banner");

  script_tag(name:"solution_type", value:"VendorFix");

  script_name("WordPress W3 Total Cache Plugin < 2.1.4 XSS Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2022 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_wordpress_plugin_http_detect.nasl");
  script_mandatory_keys("wordpress/plugin/w3-total-cache/detected");

  script_tag(name:"summary", value:"The WordPress plugin 'W3 Total Cache' is prone to a cross-site
  scripting (XSS) vulnerability.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"The plugin is vulnerable to a reflected XSS within the
  'extension' parameter in the Extensions dashboard, which is output in an attribute without being
  escaped first.");

  script_tag(name:"impact", value:"An attacker, who can convince an authenticated admin into
  clicking a link, may run malicious JavaScript within the user's web browser, which could lead to
  a full site compromise.");

  script_tag(name:"affected", value:"WordPress W3 Total Cache plugin prior to version 2.1.4.");

  script_tag(name:"solution", value:"Update to version 2.1.4 or later.");

  script_xref(name:"URL", value:"https://wpscan.com/vulnerability/05988ebb-7378-4a3a-9d2d-30f8f58fe9ef");

  exit(0);
}

include("host_details.inc");
include("version_func.inc");

if( ! port = get_app_port( cpe: CPE ) )
  exit( 0 );

if( ! infos = get_app_version_and_location( cpe: CPE, port: port, exit_no_version: TRUE ) )
  exit( 0 );

version = infos["version"];
location = infos["location"];

if ( version_is_less( version: version, test_version: "2.1.4" )) {
  report = report_fixed_ver( installed_version: version, fixed_version: "2.1.4", install_path: location );
  security_message( port: port, data: report );
  exit( 0 );
}

exit( 99 );