Cisco Aironet Access Points MAC Authentication Bypass Vulnerability

# 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:/o:cisco:wireless_lan_controller_firmware";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.140472");
  script_version("2021-09-10T13:01:42+0000");
  script_tag(name:"last_modification", value:"2021-09-10 13:01:42 +0000 (Fri, 10 Sep 2021)");
  script_tag(name:"creation_date", value:"2017-11-02 09:51:43 +0700 (Thu, 02 Nov 2017)");
  script_tag(name:"cvss_base", value:"5.4");
  script_tag(name:"cvss_base_vector", value:"AV:A/AC:M/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-10-09 23:22:00 +0000 (Wed, 09 Oct 2019)");

  script_cve_id("CVE-2017-12281");

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

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

  script_name("Cisco Aironet Access Points MAC Authentication Bypass Vulnerability");

  script_category(ACT_GATHER_INFO);

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

  script_copyright("Copyright (C) 2017 Greenbone Networks GmbH");
  script_family("CISCO");
  script_dependencies("gb_cisco_wlc_consolidation.nasl");
  script_mandatory_keys("cisco/wlc/detected", "cisco/wlc/model");

  script_tag(name:"summary", value:"A vulnerability in the implementation of Protected Extensible Authentication
Protocol (PEAP) functionality for standalone configurations of Cisco Aironet 1800, 2800, and 3800 Series Access
Points could allow an unauthenticated, adjacent attacker to bypass authentication and connect to an affected
device.");

  script_tag(name:"insight", value:"The vulnerability exists because the affected device uses an incorrect
default configuration setting of fail open when running in standalone mode. An attacker could exploit this
vulnerability by attempting to connect to an affected device.");

  script_tag(name:"impact", value:"A successful exploit could allow the attacker to bypass authentication and connect to the affected device.");

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

  script_xref(name:"URL", value:"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-aironet3");

  exit(0);
}

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

model = get_kb_item("cisco/wlc/model");
if (!model || ((model !~ "^AIR-AP156[0-9]") && (model !~ "^AIR-AP(28|38)[0-9]{2}")))
  exit(0);

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

if (version =~ "^8\.2\.") {
  if (version_is_less(version: version, test_version: "8.2.160.0")) {
    report = report_fixed_ver(installed_version: version, fixed_version: "8.2.160.0");
    security_message(port: 0, data: report);
    exit(0);
  }
}

if (version =~ "^8\.3\.") {
  if (version_is_less(version: version, test_version: "8.3.121.0")) {
    report = report_fixed_ver(installed_version: version, fixed_version: "8.3.121.0");
    security_message(port: 0, data: report);
    exit(0);
  }
}

if (version =~ "^8\.4\.") {
  if (version_is_less(version: version, test_version: "8.4.100.0")) {
    report = report_fixed_ver(installed_version: version, fixed_version: "8.4.100.0");
    security_message(port: 0, data: report);
    exit(0);
  }
}

if (version =~ "^8\.5\.") {
  if (version_is_less(version: version, test_version: "8.5.103.0")) {
    report = report_fixed_ver(installed_version: version, fixed_version: "8.5.103.0");
    security_message(port: 0, data: report);
    exit(0);
  }
}

exit(99);