Cisco ASA Software DNS Denial of Service Vulnerability (cisco-sa-20170419-asa-dns)

# 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("1.3.6.1.4.1.25623.1.0.106770");
  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 08:55:35 +0200 (Thu, 20 Apr 2017)");
  script_tag(name:"cvss_base", value:"5.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/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-2017-6607");

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

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

  script_name("Cisco ASA Software DNS Denial of Service Vulnerability (cisco-sa-20170419-asa-dns)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2017 Greenbone Networks GmbH");
  script_family("CISCO");
  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 DNS code of Cisco ASA Software could
  allow an unauthenticated, remote attacker to cause an affected device to reload or corrupt the
  information present in the device's local DNS cache.");

  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 a flaw in handling crafted DNS
  response messages. An attacker could exploit this vulnerability by triggering a DNS request from
  the Cisco ASA Software and replying with a crafted response.");

  script_tag(name:"impact", value:"A successful exploit could cause the device to reload, resulting
  in a denial of service (DoS) condition or corruption of the local DNS cache information.");

  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-dns");

  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",
  "9.1.7.11",
  "9.1.7.4",
  "9.1.7.6",
  "9.1.7.7",
  "9.1.7.9",
  "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",
  "9.2.4.16",
  "9.2.4.17",
  "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",
  "9.4.3.3",
  "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",
  "9.5.3",
  "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",
  "9.6.2.1");

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);