OTRS 5.0.x < 5.0.37, 6.0.x < 6.0.20 Information Disclosure Vulnerability

# Copyright (C) 2019 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:otrs:otrs';

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.112635");
  script_version("2023-01-23T10:11:56+0000");
  script_tag(name:"last_modification", value:"2023-01-23 10:11:56 +0000 (Mon, 23 Jan 2023)");
  script_tag(name:"creation_date", value:"2019-08-22 09:07:11 +0000 (Thu, 22 Aug 2019)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2023-01-20 16:25:00 +0000 (Fri, 20 Jan 2023)");

  script_cve_id("CVE-2019-12746");

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

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

  # nb: OTRS Business not being detected at the moment
  script_name("OTRS 5.0.x < 5.0.37, 6.0.x < 6.0.20 Information Disclosure Vulnerability");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2019 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("secpod_otrs_detect.nasl");
  script_mandatory_keys("OTRS/installed");

  script_tag(name:"summary", value:"OTRS is prone to an information disclosure vulnerability.");

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

  script_tag(name:"insight", value:"A user logged into OTRS as an agent might unknowingly disclose their
  session ID by sharing the link of an embedded ticket article with third parties.");

  script_tag(name:"affected", value:"OTRS 5.0.x through 5.0.36 and 6.0.x through 6.0.19.");

  script_tag(name:"impact", value:"The identifier can be potentially abused in order to impersonate the agent user.");

  script_tag(name:"solution", value:"Update to version 5.0.37, 6.0.20 or later.");

  script_xref(name:"URL", value:"https://community.otrs.com/security-advisory-2019-10-security-update-for-otrs-framework/");

  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: "5.0.0", test_version2: "5.0.36")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "5.0.37", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if(version_in_range(version: version, test_version: "6.0.0", test_version2: "6.0.19")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "6.0.20", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);