Cisco Adaptive Security Appliance Username Enumeration Information Disclosure Vulnerability

2017-08-03T00:00:00
ID OPENVAS:1361412562310140271
Type openvas
Reporter This script is Copyright (C) 2017 Greenbone Networks GmbH
Modified 2019-10-09T00:00:00

Description

A vulnerability in the web interface of the Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to determine valid usernames. The attacker could use this information to conduct additional reconnaissance attacks.

                                        
                                            ###############################################################################
# OpenVAS Vulnerability Test
#
# Cisco Adaptive Security Appliance Username Enumeration Information Disclosure 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("1.3.6.1.4.1.25623.1.0.140271");
  script_cve_id("CVE-2017-6752");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_version("2019-10-09T06:43:33+0000");

  script_name("Cisco Adaptive Security Appliance Username Enumeration Information Disclosure Vulnerability");

  script_xref(name:"URL", value:"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170802-asa2");

  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 web interface of the Cisco Adaptive Security Appliance
(ASA) could allow an unauthenticated, remote attacker to determine valid usernames. The attacker could use this
information to conduct additional reconnaissance attacks.");

  script_tag(name:"insight", value:"The vulnerability is due to the interaction between Lightweight Directory
Access Protocol (LDAP) and SSL Connection Profile when they are configured together. An attacker could exploit
the vulnerability by performing a username enumeration attack to the IP address of the device.");

  script_tag(name:"impact", value:"An exploit could allow the attacker to determine valid usernames.");

  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:"2017-08-03 10:07:33 +0700 (Thu, 03 Aug 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(
  '9.3.3',
  '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);