Cisco ASA Software Internet Key Exchange Version 1 XAUTH Denial of Service Vulnerability (cisco-sa-20170419-asa-xauth)

# Copyright (C) 2017 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(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:cisco:asa";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.106769");
  script_version("2022-02-24T08:32:00+0000");
  script_tag(name:"last_modification", value:"2022-02-24 08:32:00 +0000 (Thu, 24 Feb 2022)");
  script_tag(name:"creation_date", value:"2017-04-20 08:47:39 +0200 (Thu, 20 Apr 2017)");
  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_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-10-03 00:03:00 +0000 (Thu, 03 Oct 2019)");

  script_cve_id("CVE-2017-6610");

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

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

  script_name("Cisco ASA Software Internet Key Exchange Version 1 XAUTH Denial of Service Vulnerability (cisco-sa-20170419-asa-xauth)");

  script_category(ACT_GATHER_INFO);

  script_family("CISCO");
  script_copyright("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");

  script_tag(name:"summary", value:"A vulnerability in the Internet Key Exchange Version 1 (IKEv1)
  XAUTH code of Cisco ASA Software could allow an authenticated, remote attacker to cause a reload
  of an affected system.");

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

  script_tag(name:"insight", value:"The vulnerability is due to insufficient validation of the IKEv1
  XAUTH parameters passed during an IKEv1 negotiation. An attacker could exploit this vulnerability
  by sending crafted parameters.

  Only traffic directed to the affected system can be used to exploit this vulnerability. This
  vulnerability only affects systems configured in routed firewall mode and in single or multiple
  context mode. This vulnerability can be triggered by IPv4 or IPv6 traffic. A valid IKEv1 Phase 1
  needs to be established to exploit this vulnerability, which means that an attacker would need to
  have knowledge of a pre-shared key or have a valid certificate for phase 1 authentication.");

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

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

  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(pattern: "(\(|\))", string: version, replace: ".");
check_vers = ereg_replace(pattern: "\.$", string: check_vers, replace: "");

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",
  "9.2.4.2",
  "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",
  "9.4.0.115",
  "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",
  "9.5.1",
  "9.5.2",
  "9.5.2.10",
  "9.5.2.14",
  "9.5.2.6",
  "9.6.0",
  "9.6.1",
  "9.6.1.3");

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);