Apache Tomcat DoS Vulnerability - March19 (Windows)

2019-04-16T00:00:00
ID OPENVAS:1361412562310142263
Type openvas
Reporter This script is Copyright (C) 2019 Greenbone Networks GmbH
Modified 2019-05-10T00:00:00

Description

Apache Tomcat is prone to a denial of service vulnerability in the HTTP/2 implementation.

                                        
                                            # Copyright (C) 2019 Greenbone Networks GmbH
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (C) of the respective author(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:apache:tomcat";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.142263");
  script_version("2019-05-10T11:41:35+0000");
  script_tag(name:"last_modification", value:"2019-05-10 11:41:35 +0000 (Fri, 10 May 2019)");
  script_tag(name:"creation_date", value:"2019-04-16 07:00:42 +0000 (Tue, 16 Apr 2019)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");

  script_cve_id("CVE-2019-0199");

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

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

  script_name("Apache Tomcat DoS Vulnerability - March19 (Windows)");

  script_category(ACT_GATHER_INFO);

  script_copyright("This script is Copyright (C) 2019 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_apache_tomcat_consolidation.nasl", "os_detection.nasl");
  script_mandatory_keys("apache/tomcat/detected", "Host/runs_windows");

  script_tag(name:"summary", value:"Apache Tomcat is prone to a denial of service vulnerability in the HTTP/2
  implementation.");

  script_tag(name:"insight", value:"The HTTP/2 implementation accepts streams with excessive numbers of SETTINGS
  frames and also permitts clients to keep streams open without reading/writing request/response data. By keeping
  streams open for requests that utilises the Servlet API's blocking I/O, clients are able to cause server-side
  threads to block eventually leading to thread exhaustion and a DoS.");

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

  script_tag(name:"affected", value:"Apache Tomcat 8.5.0 to 8.5.37 and 9.0.0.M1 to 9.0.14.");

  script_tag(name:"solution", value:"Update to version 8.5.38, 9.0.16 or later.");

  script_xref(name:"URL", value:"http://tomcat.apache.org/security-9.html");
  script_xref(name:"URL", value:"http://tomcat.apache.org/security-8.html");

  exit(0);
}

include("host_details.inc");
include("revisions-lib.inc");
include("version_func.inc");

if (isnull(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'];
path = infos['location'];

if (version_in_range(version: version, test_version: "8.5.0", test_version2: "8.5.37")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "8.5.38", install_path: path);
  security_message(port: port, data: report);
  exit(0);
}

if ((revcomp(a: version, b: "9.0.0.M1") >= 0) && (revcomp(a: version, b: "9.0.14") <= 0)) {
  report = report_fixed_ver(installed_version: version, fixed_version: "9.0.16", install_path: path);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);