Drupal < 8.9.16, 9.0.x < 9.0.14, 9.1.x < 9.1.9 XSS Vulnerability (SA-CORE-2021-003) - Linux

# 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.

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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.112890");
  script_version("2021-12-02T03:03:37+0000");
  script_tag(name:"last_modification", value:"2021-12-02 03:03:37 +0000 (Thu, 02 Dec 2021)");
  script_tag(name:"creation_date", value:"2021-05-27 09:49:11 +0000 (Thu, 27 May 2021)");
  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:"2021-06-10 20:14:00 +0000 (Thu, 10 Jun 2021)");

  script_cve_id("CVE-2021-33829");

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

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

  script_name("Drupal < 8.9.16, 9.0.x < 9.0.14, 9.1.x < 9.1.9 XSS Vulnerability (SA-CORE-2021-003) - Linux");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_drupal_http_detect.nasl", "os_detection.nasl");
  script_mandatory_keys("drupal/detected", "Host/runs_unixoide");

  script_tag(name:"summary", value:"Drupal 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:"Drupal core uses the third-party CKEditor library. This library
  has an error in parsing HTML that could lead to an XSS attack.

  This issue is mitigated by the fact that it only affects sites with CKEditor enabled.");

  script_tag(name:"affected", value:"Drupal before 8.9.16, 9.0.x before 9.0.14,
  and 9.1.x before 9.1.9.");

  script_tag(name:"solution", value:"Update to version 8.9.16, 9.0.14, 9.1.9 or later.");

  script_xref(name:"URL", value:"https://www.drupal.org/sa-core-2021-003");

  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, version_regex: "^[0-9]\.[0-9]+"))
  exit(0);

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

if (version_is_less(version: version, test_version: "8.9.16")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "8.9.16", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "9.0", test_version2: "9.0.13")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "9.0.14", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "9.1", test_version2: "9.1.8")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "9.1.9", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);