Cisco Meshed Wireless LAN Controller Impersonation 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("1.3.6.1.4.1.25623.1.0.106665");
  script_cve_id("CVE-2017-3854");
  script_tag(name:"cvss_base", value:"8.3");
  script_tag(name:"cvss_base_vector", value:"AV:A/AC:L/Au:N/C:C/I:C/A:C");
  script_version("2021-09-20T08:01:57+0000");

  script_name("Cisco Meshed Wireless LAN Controller Impersonation Vulnerability");

  script_xref(name:"URL", value:"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-wlc-mesh");

  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 mesh code of Cisco Wireless LAN Controller (WLC)
software could allow an unauthenticated, remote attacker to impersonate a WLC in a meshed topology.");

  script_tag(name:"insight", value:"The vulnerability is due to insufficient authentication of the parent access
point in a mesh configuration. An attacker could exploit this vulnerability by forcing the target system to
disconnect from the correct parent access point and reconnect to a rogue access point owned by the attacker.");

  script_tag(name:"impact", value:"An exploit could allow the attacker to control the traffic flowing through
the impacted access point or take full control of the target system.");

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

  script_tag(name:"last_modification", value:"2021-09-20 08:01:57 +0000 (Mon, 20 Sep 2021)");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:A/AC:L/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:"2021-09-14 12:12:00 +0000 (Tue, 14 Sep 2021)");
  script_tag(name:"creation_date", value:"2017-03-17 10:43:42 +0700 (Fri, 17 Mar 2017)");
  script_category(ACT_GATHER_INFO);
  script_family("CISCO");
  script_copyright("Copyright (C) 2017 Greenbone Networks GmbH");
  script_dependencies("gb_cisco_wlc_consolidation.nasl");
  script_mandatory_keys("cisco/wlc/detected", "cisco/wlc/model");

  exit(0);
}

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

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

if (!model = get_kb_item("cisco/wlc/model"))
  exit(0);

if (model !~ "25[0-9][0-9]" && model !~ "55[0-9][0-9]" && model !~ "85[0-9][0-9]" && model !~ "AIR-CTVM")
  exit(99);

affected = make_list(
  '3.1.105.0',
  '3.1.111.0',
  '3.1.59.24',
  '3.2.116.21',
  '3.2.150.10',
  '3.2.150.6',
  '3.2.171.5',
  '3.2.171.6',
  '3.2.185.0',
  '3.2.193.5',
  '3.2.195.10',
  '3.2.78.0',
  '3.6.0E',
  '4.0.108',
  '4.0.155.0',
  '4.0.155.5',
  '4.0.179.11',
  '4.0.179.8',
  '4.0.196',
  '4.0.206.0',
  '4.0.217.0',
  '4.0.219.0',
  '4.1.171.0',
  '4.1.181.0',
  '4.1.185.0',
  '4.2.112.0',
  '4.2.117.0',
  '4.2.130.0',
  '4.2.173.0',
  '4.2.174.0',
  '4.2.176.0',
  '4.2.182.0',
  '4.2.61.0',
  '4.2.99.0',
  '5.0.148.0',
  '5.0.148.2',
  '5.1.151.0',
  '5.1.152.0',
  '5.1.160.0',
  '5.2.157.0',
  '5.2.169.0',
  '6.0182.0',
  '6.0188.0',
  '6.0196.0',
  '6.0199.4',
  '6.0202.0',
  '7.0116.0',
  '7.0220.0',
  '7.0240.0',
  '7.0250.0',
  '7.0252.0',
  '7.098.0',
  '7.098.218',
  '7.191.0',
  '7.2103.0',
  '7.3.101.0',
  '7.3.103.8',
  '7.3.112',
  '7.4.1.1',
  '7.4.100',
  '7.4.100.60',
  '7.4.110.0',
  '7.4.121.0',
  '7.41.19',
  '7.41.54',
  '7.4140.0',
  '7.5.102.0',
  '7.5.102.11',
  '7.6.1.62',
  '7.6.100.0',
  '7.6.110.0',
  '7.6.120.0',
  '7.6.130.0',
  '8.0.0',
  '8.0.0.30220.385',
  '8.0.100',
  '8.0.115.0',
  '8.0.120.0',
  '8.0.121.0',
  '8.0.72.140',
  '8.1.0',
  '8.1.104.37',
  '8.1.111.0',
  '8.1.122.0',
  '8.1.130.0');

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

exit(99);