Joomla! Core 'PHP' Local File Inclusion Vulnerability (20180601)

# SPDX-FileCopyrightText: 2018 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

CPE = "cpe:/a:joomla:joomla";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.813458");
  script_version("2026-04-30T06:27:06+0000");
  script_cve_id("CVE-2018-12712");
  script_tag(name:"cvss_base", value:"6.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_tag(name:"last_modification", value:"2026-04-30 06:27:06 +0000 (Thu, 30 Apr 2026)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-08-20 15:47:00 +0000 (Mon, 20 Aug 2018)");
  script_tag(name:"creation_date", value:"2018-06-27 16:36:27 +0530 (Wed, 27 Jun 2018)");

  script_name("Joomla! Core 'PHP' Local File Inclusion Vulnerability (20180601)");

  script_tag(name:"summary", value:"Joomla is prone to a local file inclusion vulnerability.");

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

  script_tag(name:"insight", value:"The flaw exists due to an error in PHP 5.3, where 'class_exists'
  function validates invalid names as valid.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote attackers to conduct
  local file inclusion attacks.");

  script_tag(name:"affected", value:"Joomla core versions 2.5.0 through 3.8.8.");

  script_tag(name:"solution", value:"Update to version 3.8.9 or later.");

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

  script_xref(name:"URL", value:"https://developer.joomla.org/security-centre/741-20180601-core-local-file-inclusion-with-php-5-3");
  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_category(ACT_GATHER_INFO);
  script_family("Web application abuses");
  script_dependencies("joomla_http_detect.nasl");
  script_mandatory_keys("joomla/detected");

  exit(0);
}

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

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

if(version_in_range(version:vers, test_version:"2.5.0", test_version2:"3.8.8")) {
  report = report_fixed_ver(installed_version:vers, fixed_version:"3.8.9", install_path:path);
  security_message(port:port, data:report);
  exit(0);
}

exit(99);