Cisco ASA Software IPsec Denial of Service Vulnerability

2017-04-20T00:00:00
ID OPENVAS:1361412562310106766
Type openvas
Reporter This script is Copyright (C) 2017 Greenbone Networks GmbH
Modified 2019-10-09T00:00:00

Description

A vulnerability in the IPsec code of Cisco ASA Software could allow an authenticated, remote attacker to cause a reload of the affected system.

                                        
                                            ###############################################################################
# OpenVAS Vulnerability Test
#
# Cisco ASA Software IPsec Denial of Service Vulnerability
#
# Authors:
# Christian Kuersteiner <christian.kuersteiner@greenbone.net>
#
# Copyright:
# Copyright (c) 2017 Greenbone Networks GmbH
#
# 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:cisco:asa";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.106766");
  script_cve_id("CVE-2017-6609");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:N/I:N/A:C");
  script_version("2019-10-09T06:43:33+0000");

  script_name("Cisco ASA Software IPsec Denial of Service Vulnerability");

  script_xref(name:"URL", value:"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170419-asa-ipsec");

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

  script_tag(name:"solution", value:"See the referenced vendor advisory for a solution.");

  script_tag(name:"summary", value:"A vulnerability in the IPsec code of Cisco ASA Software could allow an
authenticated, remote attacker to cause a reload of the affected system.");

  script_tag(name:"insight", value:"The vulnerability is due to improper parsing of malformed IPsec packets. An
attacker could exploit this vulnerability by sending malformed IPsec packets to the affected system.

Only traffic directed to the affected system can be used to exploit this vulnerability. This vulnerability
affects systems configured in routed firewall mode only and in single or multiple context mode. This
vulnerability can be triggered by IPv4 and IPv6 traffic. An attacker needs to establish a valid IPsec tunnel
before exploiting this vulnerability.");

  script_tag(name:"impact", value:"An authenticated attacker may cause a denial of service condition.");

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

  script_tag(name:"last_modification", value:"2019-10-09 06:43:33 +0000 (Wed, 09 Oct 2019)");
  script_tag(name:"creation_date", value:"2017-04-20 08:05:15 +0200 (Thu, 20 Apr 2017)");
  script_category(ACT_GATHER_INFO);
  script_family("CISCO");
  script_copyright("This script is Copyright (C) 2017 Greenbone Networks GmbH");
  script_dependencies("gb_cisco_asa_version.nasl", "gb_cisco_asa_version_snmp.nasl");
  script_mandatory_keys("cisco_asa/version");

  exit(0);
}

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

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

check_vers = ereg_replace(string: version, pattern: "\(([0-9.]+)\)", replace: ".\1");

affected = make_list(
  '9.0.1',
  '9.0.2',
  '9.0.2.10',
  '9.0.3',
  '9.0.3.6',
  '9.0.3.8',
  '9.0.4',
  '9.0.4.1',
  '9.0.4.17',
  '9.0.4.20',
  '9.0.4.24',
  '9.0.4.26',
  '9.0.4.29',
  '9.0.4.33',
  '9.0.4.35',
  '9.0.4.37',
  '9.0.4.40',
  '9.0.4.42',
  '9.0.4.5',
  '9.0.4.7',
  '9.1.1',
  '9.1.1.4',
  '9.1.2',
  '9.1.2.8',
  '9.1.3',
  '9.1.3.2',
  '9.1.4',
  '9.1.4.5',
  '9.1.5',
  '9.1.5.10',
  '9.1.5.12',
  '9.1.5.15',
  '9.1.5.21',
  '9.1.6',
  '9.1.6.1',
  '9.1.6.10',
  '9.1.6.4',
  '9.1.6.6',
  '9.1.6.8',
  '9.1.7.4',
  '9.1.7.6',
  '9.1.7.7',
  '9.2.0.0',
  '9.2.0.104',
  '9.2.3.1',
  '9.2.1',
  '9.2.2',
  '9.2.2.4',
  '9.2.2.7',
  '9.2.2.8',
  '9.2.3',
  '9.2.3.3',
  '9.2.3.4',
  '9.2.4',
  '9.2.4.10',
  '9.2.4.13',
  '9.2.4.14',
  '9.2.4.2',
  '9.2.4.4',
  '9.2.4.8',
  '9.3.1.105',
  '9.3.1.50',
  '9.3.2.100',
  '9.3.2.243',
  '9.3.1',
  '9.3.1.1',
  '9.3.2',
  '9.3.2.2',
  '9.3.3',
  '9.3.3.1',
  '9.3.3.10',
  '9.3.3.11',
  '9.3.3.2',
  '9.3.3.5',
  '9.3.3.6',
  '9.3.3.9',
  '9.3.5',
  '9.4.0.115',
  '9.4.1',
  '9.4.1.1',
  '9.4.1.2',
  '9.4.1.3',
  '9.4.1.5',
  '9.4.2',
  '9.4.2.3',
  '9.4.3',
  '9.4.3.11',
  '9.4.3.12',
  '9.4.3.3',
  '9.4.3.4',
  '9.4.3.6',
  '9.4.3.8',
  '9.4.4',
  '9.5.1',
  '9.5.2',
  '9.5.2.10',
  '9.5.2.14',
  '9.5.2.6',
  '9.5.3',
  '9.5.3.1',
  '9.6.0',
  '9.6.1',
  '9.6.1.10',
  '9.6.1.3',
  '9.6.1.5',
  '9.6.2');

foreach af (affected) {
  if (check_vers == af) {
    report = report_fixed_ver(installed_version: version, fixed_version: "See advisory");
    security_message(port: 0, data: report);
    exit(0);
  }
}

exit(99);