OpenEMR 2.7.3-rc1 < 6.0.0.1 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.
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# 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:open-emr:openemr";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.145672");
  script_version("2021-08-26T06:01:00+0000");
  script_tag(name:"last_modification", value:"2021-08-26 06:01:00 +0000 (Thu, 26 Aug 2021)");
  script_tag(name:"creation_date", value:"2021-03-29 08:44:50 +0000 (Mon, 29 Mar 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 18:24:00 +0000 (Wed, 24 Mar 2021)");

  script_cve_id("CVE-2021-25921");

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

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

  script_name("OpenEMR 2.7.3-rc1 < 6.0.0.1 XSS Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_openemr_detect.nasl");
  script_mandatory_keys("openemr/installed");

  script_tag(name:"summary", value:"OpenEMR 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 module OpenEMR can be abused by stored XSS vulnerability since it
  performs improper validation on the input sent to the allergies 'Title' field of patient details, before
  rendering the patient details in the reports page. An attacker could lure an admin to enter a malicious
  payload and by that initiate the exploit.");

  script_tag(name:"affected", value:"OpenEMR version 2.7.3-rc1 through 6.0.0.");

  script_tag(name:"solution", value:"Update to version 6.0.0.1 or later.");

  script_xref(name:"URL", value:"https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25921");

  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_in_range(version: version, test_version: "2.7.3", test_version2: "6.0.0")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "6.0.0.1", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);