Apache Traffic Server (ATS) Multiple HTTP/2 DoS vulnerabilities

# 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:traffic_server";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.143069");
  script_version("2019-10-28T05:15:58+0000");
  script_tag(name:"last_modification", value:"2019-10-28 05:15:58 +0000 (Mon, 28 Oct 2019)");
  script_tag(name:"creation_date", value:"2019-10-28 05:08:21 +0000 (Mon, 28 Oct 2019)");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");

  script_cve_id("CVE-2019-9512", "CVE-2019-9514", "CVE-2019-9515", "CVE-2019-10079");

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

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

  script_name("Apache Traffic Server (ATS) Multiple HTTP/2 DoS vulnerabilities");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2019 Greenbone Networks GmbH");
  script_family("Denial of Service");
  script_dependencies("gb_apache_traffic_detect.nasl");
  script_mandatory_keys("apache_trafficserver/installed");

  script_tag(name:"summary", value:"Apache Traffic Server is prone to multiple denial of service vulnerabilities
  in the HTTP/2 implementation.");

  script_tag(name:"insight", value:"Apache Traffic Server is prone to multiple denial of service vulnerabilities:

  - Ping Flood (CVE-2019-9512)

  - Reset Flood (CVE-2019-9514)

  - Settings Flood (CVE-2019-9515)

  - Malformed SETTINGS frames (CVE-2019-10079)");

  script_tag(name:"affected", value:"Apache Traffic Server versions 6.0.0 - 6.2.3, 7.0.0 - 7.1.6 and 8.0.0 - 8.0.3.");

  script_tag(name:"solution", value:"Update to version 7.1.7, 8.0.4 or later.");

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

  script_xref(name:"URL", value:"https://lists.apache.org/thread.html/bde52309316ae798186d783a5e29f4ad1527f61c9219a289d0eee0a7@%3Cdev.trafficserver.apache.org%3E");

  exit(0);
}

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

if (!port = get_app_port(cpe: CPE))
  exit(0);

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

if (version_in_range(version: version, test_version: "6.0.0", test_version2: "6.2.3") ||
    version_in_range(version: version, test_version: "7.0.0", test_version2: "7.1.6")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "7.1.7");
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "8.0.0", test_version2: "8.0.3")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "8.0.4");
  security_message(port: port, data: report);
  exit(0);
}

exit(99);