WordPress < 4.4 Weak PNG Vulnerability

# Copyright (C) 2021 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
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# GNU General Public License for more details.
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# 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:wordpress:wordpress";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.117253");
  script_version("2023-03-01T10:20:05+0000");
  script_tag(name:"last_modification", value:"2023-03-01 10:20:05 +0000 (Wed, 01 Mar 2023)");
  script_tag(name:"creation_date", value:"2021-03-17 10:23:16 +0000 (Wed, 17 Mar 2021)");
  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:"severity_vector", value:"CVSS:3.0/AV:N/AC:H/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:"2018-05-17 14:38:00 +0000 (Thu, 17 May 2018)");

  script_cve_id("CVE-2014-6412");

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

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

  script_name("WordPress < 4.4 Weak PNG Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_wordpress_http_detect.nasl");
  script_mandatory_keys("wordpress/detected");

  script_tag(name:"summary", value:"WordPress is using a weak Pseudorandom Number
  Generator (PNG) for password reset tokens.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the
  target host.");

  script_tag(name:"insight", value:"The PNG in WordPress used for password reset tokens
  is not sufficiently random.");

  script_tag(name:"impact", value:"A remote user may be able to predict the password
  reset token and gain access to the target site.");

  script_tag(name:"affected", value:"WordPress versions before 4.4.");

  script_tag(name:"solution", value:"Update to version 4.4 or later.");

  script_xref(name:"URL", value:"https://core.trac.wordpress.org/ticket/28633");
  script_xref(name:"URL", value:"http://packetstormsecurity.com/files/130380/WordPress-Failed-Randomness.html");
  script_xref(name:"URL", value:"http://seclists.org/fulldisclosure/2015/Feb/42");
  script_xref(name:"URL", value:"http://seclists.org/fulldisclosure/2015/Feb/53");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/72589");

  exit(0);
}

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

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

if (!infos = get_app_version_and_location(cpe: CPE, port: port, exit_no_version: TRUE))
  exit(0);

version = infos["version"];
location = infos["location"];

if (version_is_less(version: version, test_version: "4.4")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.4", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);