Nextcloud Server 17.x < 17.0.5, 18.x < 18.0.3 Insecure Direct Object Reference Vulnerability (NC-SA-2020-018)

2020-05-13T00:00:00
ID OPENVAS:1361412562310143884
Type openvas
Reporter Copyright (C) 2020 Greenbone Networks GmbH
Modified 2020-05-13T00:00:00

Description

Nextcloud Server is prone to an insecure direct object reference vulnerability due to a missing ownership check on remote wipe endpoint.

                                        
                                            # Copyright (C) 2020 Greenbone Networks GmbH
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# 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
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CPE = "cpe:/a:nextcloud:nextcloud";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.143884");
  script_version("2020-05-13T08:02:10+0000");
  script_tag(name:"last_modification", value:"2020-05-13 08:02:10 +0000 (Wed, 13 May 2020)");
  script_tag(name:"creation_date", value:"2020-05-13 07:46:09 +0000 (Wed, 13 May 2020)");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:N/I:N/A:C");

  script_cve_id("CVE-2020-8154");

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

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

  script_name("Nextcloud Server 17.x < 17.0.5, 18.x < 18.0.3 Insecure Direct Object Reference Vulnerability (NC-SA-2020-018)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2020 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_nextcloud_detect.nasl");
  script_mandatory_keys("nextcloud/installed");

  script_tag(name:"summary", value:"Nextcloud Server is prone to an insecure direct object reference vulnerability
  due to a missing ownership check on remote wipe endpoint.");

  script_tag(name:"insight", value:"An Insecure direct object reference vulnerability in Nextcloud Server allows
  an attacker to remote wipe devices of other users when sending a malicious request directly to the endpoint.");

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

  script_tag(name:"affected", value:"Nextcloud server versions 17.x and 18.x.");

  script_tag(name:"solution", value:"Update to version 17.0.5, 18.0.3 or later.");

  script_xref(name:"URL", value:"https://nextcloud.com/security/advisory/?id=NC-SA-2020-018");

  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: "17.0.0", test_version2: "17.0.4")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "17.0.5", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "18.0.0", test_version2: "18.0.2")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "18.0.3", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);