Plone CMS <= 5.2.7 XSS Vulnerability

# Copyright (C) 2021 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.

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.113817");
  script_version("2022-05-13T07:57:53+0000");
  script_tag(name:"last_modification", value:"2022-05-13 07:57:53 +0000 (Fri, 13 May 2022)");
  script_tag(name:"creation_date", value:"2021-05-12 09:15:48 +0000 (Wed, 12 May 2021)");
  script_tag(name:"cvss_base", value:"3.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:S/C:N/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-03-24 17:05:00 +0000 (Wed, 24 Mar 2021)");

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

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

  script_cve_id("CVE-2021-29002");

  script_name("Plone CMS <= 5.2.7 XSS Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_plone_http_detect.nasl");
  script_mandatory_keys("plone/detected");

  script_tag(name:"summary", value:"Plone CMS 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 vulnerability is exploitable by an attacker with
  manager-level access when sending JavaScript code via the orm.widgets.site_title parameter in the
  site control panel.");

  script_tag(name:"impact", value:"Successful exploitation would allow an authenticated attacker to
  inject arbitrary JavaScript into the site.");

  script_tag(name:"affected", value:"Plone CMS through version 5.2.7.");

  script_tag(name:"solution", value:"No known solution was made available for at least one year since
  the disclosure of this vulnerability. Likely none will be provided anymore. General solution options
  are to upgrade to a newer release, disable respective features, remove the product or replace the
  product by another one.

  Note: The vendor concluded that it is not a vulnerability, because this is done by a Manager, and
  Managers can use the Web statistics field on the same form to include Javascript, which is what
  that field is intended for. The issue is still open in their bug tracker.");

  script_xref(name:"URL", value:"https://www.exploit-db.com/exploits/49668");
  script_xref(name:"URL", value:"https://github.com/plone/Products.CMFPlone/issues/3255");

  exit(0);
}

CPE = "cpe:/a:plone:plone";

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_equal( version: version, test_version: "5.2.7" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "None", install_path: location );
  security_message( data: report, port: port );
  exit( 0 );
}

exit( 99 );