Moodle File Disclosure Vulnerability

###############################################################################
# OpenVAS Vulnerability Test
# $Id: moodle_cms_file_disclosure.nasl 5002 2017-01-13 10:17:13Z teissa $
#
# Moodle File Disclosure Vulnerability
#
# Authors:
# Michael Meyer
#
# Copyright:
# Copyright (c) 2009 Greenbone Networks GmbH
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), 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 = "An input filter for TeX formulas can be exploited to disclose files
   readable by the web server. This includes the moodle configuration
   file with all authentication data and server locations for directly
   connecting to backend database.
   TeX filter by default is off and in case of being activated mostly no
   complete LaTeX environment on a server system will be available.

   Moodle 1.9.x (prior to 1.9.4)
   Moodle 1.8.x (prior to 1.8.8)
   Moodle 1.7.x (prior to 1.7.7) 


 Solution :
  Several alternatives:
   1) deactivate TeX filter, if not needed
   2) use more restrictive mimetex program for rendering
   3) change LaTeX configuration (set 'openin_any=p' for paranoid!)

   ... or upgrade to latest development version where patch should be
   applied by now.";


if (description)
{
 script_id(100085);
 script_version("$Revision: 5002 $");
 script_tag(name:"last_modification", value:"$Date: 2017-01-13 11:17:13 +0100 (Fri, 13 Jan 2017) $");
 script_tag(name:"creation_date", value:"2009-03-28 19:13:00 +0100 (Sat, 28 Mar 2009)");
 script_tag(name:"cvss_base", value:"5.0");
 script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");

 script_name("Moodle File Disclosure Vulnerability");

script_tag(name:"qod_type", value:"remote_banner");
 script_category(ACT_GATHER_INFO);
 script_family("Web application abuses");
 script_copyright("This script is Copyright (C) 2009 Greenbone Networks GmbH");
 script_dependencies("gb_moodle_cms_detect.nasl");
 script_require_ports("Services/www", 80);
 script_mandatory_keys("Moodle/Version");
 script_tag(name : "summary" , value : tag_summary);
 script_xref(name : "URL" , value : "http://www.securityfocus.com/archive/1/502231/30/0/threaded");
 exit(0);
}


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

moodlePort = get_http_port(default:80);
if(!moodlePort){
  exit(0);
}

if(!get_kb_item(string("www/", moodlePort, "/moodle")))exit(0);

moodleVer = get_kb_item("Moodle/Version");
if(!moodleVer){
  exit(0);
}

# Grep for Moodle CMS Version
if(version_in_range(version:moodleVer, test_version:"1.6", test_version2:"1.6.8") ||
   version_in_range(version:moodleVer, test_version:"1.7", test_version2:"1.7.6") ||
   version_in_range(version:moodleVer, test_version:"1.8", test_version2:"1.8.8") ||
   version_in_range(version:moodleVer, test_version:"1.9", test_version2:"1.9.4")){
  security_message(moodlePort);
}