Opencast < 10.14, 11.x < 11.7 Improper Authentication 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:opencast:opencast";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.127023");
  script_version("2022-12-05T10:11:03+0000");
  script_tag(name:"last_modification", value:"2022-12-05 10:11:03 +0000 (Mon, 05 Dec 2022)");
  script_tag(name:"creation_date", value:"2022-05-26 10:02:28 +0000 (Thu, 26 May 2022)");
  script_tag(name:"cvss_base", value:"5.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2022-06-07 16:45:00 +0000 (Tue, 07 Jun 2022)");

  script_cve_id("CVE-2022-29237");

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

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

  script_name("Opencast < 10.14, 11.x < 11.7 Improper Authentication Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2022 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_opencast_detect.nasl");
  script_mandatory_keys("opencast/detected");

  script_tag(name:"summary", value:"Opencast is prone to a improper authentication vulnerability.");

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

  script_tag(name:"insight", value:"Users can pass along URLs for files belonging to organizations
  other than the user's own, which Opencast would then import into the current organization,
  bypassing organizational barriers.");

  script_tag(name:"impact", value:"The vulnerability allows attackers to bypass organizational
  barriers. Attackers must have full access to Opencast's ingest REST interface, and also know
  internal links to resources in another organization of the same Opencast cluster.");

  script_tag(name:"affected", value:"Opencast prior to version 10.14 and version 11.x prior to
  11.7.");

  script_tag(name:"solution", value:"Update to version 10.14, 11.7 or later.");

  script_xref(name:"URL", value:"https://github.com/opencast/opencast/security/advisories/GHSA-qm6v-cg9v-53j3");
  script_xref(name:"URL", value:"https://github.com/opencast/opencast/commit/8d5ec1614eed109b812bc27b0c6d3214e456d4e7");
  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: "10.14")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "10.14", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if(version_in_range_exclusive(version: version, test_version_lo: "11.0", test_version_up: "11.7")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "11.7", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);