coturn < 4.5.1.3 Information Disclosure Vulnerability

# Copyright (C) 2020 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:coturn:coturn";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.144195");
  script_version("2021-07-06T11:00:47+0000");
  script_tag(name:"last_modification", value:"2021-07-06 11:00:47 +0000 (Tue, 06 Jul 2021)");
  script_tag(name:"creation_date", value:"2020-07-01 06:19:25 +0000 (Wed, 01 Jul 2020)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-08-18 15:05:00 +0000 (Tue, 18 Aug 2020)");

  script_cve_id("CVE-2020-4067");

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

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

  script_name("coturn < 4.5.1.3 Information Disclosure Vulnerability");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2020 Greenbone Networks GmbH");
  script_family("General");
  script_dependencies("gb_coturn_http_detect.nasl");
  script_mandatory_keys("coturn/detected");

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

  script_tag(name:"insight", value:"In coturn there is an issue whereby STUN/TURN response buffer is not
  initialized properly. There is a leak of information between different client connections. One client (an
  attacker) could use their connection to intelligently query coturn to get interesting bytes in the padding
  bytes from the connection of another client.");

  script_tag(name:"affected", value:"coturn prior to version 4.5.1.3.");

  script_tag(name:"solution", value:"Update to version 4.5.1.3 or later.");

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

  script_xref(name:"URL", value:"https://github.com/coturn/coturn/security/advisories/GHSA-c8r8-8vp5-6gcm");

  exit(0);
}

include("host_details.inc");
include("version_func.inc");

if (!version = get_app_version(cpe: CPE, nofork: TRUE))
  exit(0);

if (version_is_less(version: version, test_version: "4.5.1.3")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.5.1.3");
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);