WordPress < 3.4.2 Access Restriction Bypass Vulnerability

# Copyright (C) 2022 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,
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# 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:wordpress:wordpress";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.104462");
  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:"2022-12-08 14:49:20 +0000 (Thu, 08 Dec 2022)");
  script_tag(name:"cvss_base", value:"4.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:N/I:P/A:N");

  script_cve_id("CVE-2012-4421");

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

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

  script_name("WordPress < 3.4.2 Access Restriction Bypass Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2022 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 prone to an access restriction bypass
  vulnerability.");

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

  script_tag(name:"insight", value:"The create_post function in wp-includes/class-wp-atom-server.php
  does not perform a capability check, which allows remote authenticated users to bypass intended
  access restrictions and publish new posts by leveraging the Contributor role and using the Atom
  Publishing Protocol (aka AtomPub) feature.");

  script_tag(name:"affected", value:"WordPress versions prior to 3.4.2.");

  script_tag(name:"solution", value:"Update to version 3.4.2 or later.");

  script_xref(name:"URL", value:"http://openwall.com/lists/oss-security/2012/09/13/4");

  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: "3.4.2")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "3.4.2", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);