Apache Traffic Server (ATS) TLS Handshake DOS Vulnerability

2018-02-28T00:00:00
ID OPENVAS:1361412562310812524
Type openvas
Reporter This script is Copyright (C) 2018 Greenbone Networks GmbH
Modified 2018-03-28T00:00:00

Description

This host is installed with Apache Traffic Server and is prone to denial of service vulnerability.

                                        
                                            ###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_apache_traffic_server_tls_handshake_dos_vuln.nasl 9226 2018-03-28 03:48:50Z ckuersteiner $
#
# Apache Traffic Server (ATS) TLS Handshake DOS Vulnerability   
#
# Authors:
# Antu Sanadi <santu@secpod.com>
#
# Copyright:
# Copyright (C) 2018 Greenbone Networks GmbH, http://www.greenbone.net
#
# 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("1.3.6.1.4.1.25623.1.0.812524");
  script_version("$Revision: 9226 $");
  script_cve_id("CVE-2017-7671");
  script_tag(name:"last_modification", value: "$Date: 2018-03-28 05:48:50 +0200 (Wed, 28 Mar 2018) $");
  script_tag(name:"creation_date", value: "2018-02-28 11:37:03 +0530 (Wed, 28 Feb 2018)");
  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_name("Apache Traffic Server (ATS) TLS Handshake DOS Vulnerability");

  script_tag(name: "summary", value: "This host is installed with Apache Traffic
  Server and is prone to denial of service vulnerability.");
 
  script_tag(name: "vuldetect", value: "Get the installed version with the help
  of detect NVT and check the version is vulnerable or not.");

  script_tag(name: "insight", value: "The flaw exists due to an error in TLS
  handshake.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote
  attackers to cause a denial of service.

  Impact Level: Application");

  script_tag(name:"affected", value:"
  Apache Traffic Server 5.2.0 to 5.3.2,

  Apache Traffic Server 6.0.0 to 6.2.0 and

  Apache Traffic Server 7.0.0");

  script_tag(name:"solution", value:"
  5.x users upgrade to 7.1.2 or later versions,

  6.x users upgrade to 6.2.2 or later versions and

  7.x users upgrade to 7.1.2 or later versions.
  For updates refer to http://trafficserver.apache.org/");

  script_tag(name: "qod_type", value: "remote_banner");
  script_tag(name: "solution_type", value: "VendorFix");
  script_xref(name: "URL", value: "http://seclists.org/oss-sec/2018/q1/197");
  script_xref(name: "URL", value: "https://github.com/apache/trafficserver/pull/1941");
  script_copyright("This script is Copyright (C) 2018 Greenbone Networks GmbH");
  script_category(ACT_GATHER_INFO);
  script_family("Web application abuses");
  script_dependencies("gb_apache_traffic_detect.nasl");
  script_mandatory_keys("apache_trafficserver/installed");
  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);
atsVer = infos['version'];
atsPath = infos['location'];

if(atsVer == "7.0.0"){
  fix = "7.1.2"; 
}
else if(atsVer =~ "^(5\.2)")
{
  if(version_in_range(version:atsVer, test_version: "5.2", test_version2: "5.3.2")){
  fix =  "7.1.2";
  }
}
else if(atsVer =~ "^(6\.0)")
{
  if(version_in_range(version:atsVer, test_version: "6.0", test_version2: "6.2.0")){
  fix =  "6.2.2";
  }
}

if(fix)
{
  report = report_fixed_ver(installed_version: atsVer, fixed_version: fix, install_path:atsPath);
  security_message(port: port, data: report);
  exit(0);
}