Building Automation Systems BAS920 Information Disclosure Vulnerability

# Copyright (C) 2018 Greenbone Networks GmbH, http://www.greenbone.net
# 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:/h:building_automation_systems:bas";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.812372");
  script_version("2022-12-02T10:11:16+0000");
  script_cve_id("CVE-2017-17974");
  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_tag(name:"last_modification", value:"2022-12-02 10:11:16 +0000 (Fri, 02 Dec 2022)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/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:"2019-10-03 00:03:00 +0000 (Thu, 03 Oct 2019)");
  script_tag(name:"creation_date", value:"2018-01-03 11:58:58 +0530 (Wed, 03 Jan 2018)");

  script_name("Building Automation Systems BAS920 Information Disclosure Vulnerability");

  script_tag(name:"summary", value:"Building Automation Systems BAS920 is prone to an information disclosure vulnerability.");

  script_tag(name:"vuldetect", value:"Sends the crafted http GET request
  and checks whether it is able to read the sensitive information or not.");

  script_tag(name:"insight", value:"The flaw exists due to improper access control
  mechanisms in the device.");

  script_tag(name:"impact", value:"Successful exploitation will allow a remote
  attacker to gain access to potentially sensitive information.");

  script_tag(name:"affected", value:"BA SYSTEMS BAS Web on BAS920 devices with
  Firmware 01.01.00*, HTTPserv 00002, and Script 02.*. Other models may be also
  affected.");

  script_tag(name:"solution", value:"No known solution was made available for at least one year since
  the disclosure of this vulnerability. Likely none will be provided anymore. General solution options
  are to upgrade to a newer release, disable respective features, remove the product or replace the
  product by another one.");

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

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

  script_xref(name:"URL", value:"http://misteralfa-hack.blogspot.in/2017/12/ba-system-improper-access-control.html");

  script_category(ACT_ATTACK);
  script_copyright("Copyright (C) 2018 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_ba_systems_web_detect.nasl");
  script_mandatory_keys("BAS/Device/Installed");
  script_require_ports("Services/www", 80);
  exit(0);
}

include("http_func.inc");
include("http_keepalive.inc");
include("host_details.inc");

if(!port = get_app_port(cpe:CPE))
  exit(0);

if(!get_app_location(cpe:CPE, port:port, nofork:TRUE)) # nb: To have a reference to the Detection-VT
  exit(0);

url = "/isc/get_sid_js.aspx";

if(http_vuln_check(port:port, url:url, pattern:'"name":"', extra_check:make_list('"pass":"', '"sid":', '"email":'),
                   check_header:TRUE)) {
  report = http_report_vuln_url(port:port, url:url);
  security_message(port:port, data:report);
  exit(0);
}

exit(99);