OpenSSL Death Alert Denial of Service Vulnerability (Windows)

2016-12-20T00:00:00
ID OPENVAS:1361412562310809768
Type openvas
Reporter Copyright (C) 2016 Greenbone Networks GmbH
Modified 2018-11-21T00:00:00

Description

This host is running OpenSSL and is prone to a denial of service vulnerability.

                                        
                                            ###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_openssl_death_alert_dos_vulnerability.nasl 12455 2018-11-21 09:17:27Z cfischer $
#
# OpenSSL Death Alert Denial of Service Vulnerability (Windows)
#
# Authors:
# Shakeel <bshakeel@secpod.com>
#
# Copyright:
# Copyright (C) 2016 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 version 2
# (or any later version), as published by the Free Software Foundation.
#
# 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:openssl:openssl";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.809768");
  script_version("$Revision: 12455 $");
  script_cve_id("CVE-2016-8610");
  script_bugtraq_id(93841);
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"last_modification", value:"$Date: 2018-11-21 10:17:27 +0100 (Wed, 21 Nov 2018) $");
  script_tag(name:"creation_date", value:"2016-12-20 19:08:41 +0530 (Tue, 20 Dec 2016)");
  script_tag(name:"qod_type", value:"remote_banner");
  script_name("OpenSSL Death Alert Denial of Service Vulnerability (Windows)");

  script_tag(name:"summary", value:"This host is running OpenSSL and is prone
  to a denial of service vulnerability.");

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

  script_tag(name:"insight", value:"The flaw is due to an error in function
  'ssl3_read_bytes' in ssl/s3_pkt.c script which might lead to higher CPU usage
  due to improper handling of warning packets.");

  script_tag(name:"impact", value:"Successful exploitation will allow a remote
  attacker to conduct a denial of service condition.");

  script_tag(name:"affected", value:"OpenSSL versions 1.1.0, 1.0.2 through 1.0.2h,
  all 1.0.1 and all 0.9.8 on Windows");

  script_tag(name:"solution", value:"Upgrade to OpenSSL version 1.0.2j or 1.1.0b
  or later.");

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

  script_xref(name:"URL", value:"http://seclists.org/oss-sec/2016/q4/224");
  script_xref(name:"URL", value:"https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=af58be768ebb690f78530f796e92b8ae5c9a4401");
  script_xref(name:"URL", value:"https://securingtomorrow.mcafee.com/mcafee-labs/ssl-death-alert-cve-2016-8610-can-cause-denial-of-service-to-openssl-servers");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2016 Greenbone Networks GmbH");
  script_family("Denial of Service");
  script_dependencies("gb_openssl_detect.nasl", "os_detection.nasl");
  script_mandatory_keys("OpenSSL/installed", "Host/runs_windows");
  script_require_ports("Services/www", 80);
  script_xref(name:"URL", value:"https://www.openssl.org");
  exit(0);
}

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

if(!sslPort = get_app_port(cpe:CPE)){
  exit(0);
}

if(!sslVer = get_app_version(cpe:CPE, port:sslPort)){
  exit(0);
}

if(sslVer =~ "^(0\.9\.8)" || sslVer =~ "^(1\.0\.1)")
{
    VULN = TRUE;
    fix = "1.1.0b or 1.0.2j";
}

else if(sslVer =~ "^(1\.0\.2)")
{
  if(version_is_less(version:sslVer, test_version:"1.0.2j"))
  {
    fix = "1.0.2j";
    VULN = TRUE;
  }
}

else if(sslVer =~ "^(1\.1\.0)")
{
  if(version_is_less(version:sslVer, test_version:"1.1.0b"))
  {
    fix = "1.1.0b";
    VULN = TRUE;
  }
}

if(VULN)
{
  report = report_fixed_ver(installed_version:sslVer, fixed_version:fix);
  security_message(data:report, port:sslPort);
  exit(0);
}