PHP Coupon Script 'page' Parameter SQL Injection Vulnerability

###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_php_coupon_45968.nasl 5750 2017-03-28 14:10:17Z cfi $
#
# PHP Coupon Script 'page' Parameter SQL Injection Vulnerability
#
# Authors:
# Michael Meyer <[email protected]>
#
# Copyright:
# Copyright (c) 2011 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 = "PHP Coupon Script is prone to an SQL-injection vulnerability because
it fails to properly sanitize user-supplied input.

Attackers may exploit this issue to compromise the application,
access or modify data, or exploit latent vulnerabilities in the
underlying database.

PHP Coupon Script 6.0 is vulnerable; other versions may also be
affected.";

if(description)
{
 script_id(103043);
 script_version("$Revision: 5750 $");
 script_tag(name:"last_modification", value:"$Date: 2017-03-28 16:10:17 +0200 (Tue, 28 Mar 2017) $");
 script_tag(name:"creation_date", value:"2011-01-25 13:20:03 +0100 (Tue, 25 Jan 2011)");
 script_bugtraq_id(45968);
 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("PHP Coupon Script 'page' Parameter SQL Injection Vulnerability");

 script_xref(name : "URL" , value : "https://www.securityfocus.com/bid/45968");
 script_xref(name : "URL" , value : "http://www.couponscript.com/");

 script_tag(name:"qod_type", value:"remote_active");
 script_category(ACT_ATTACK);
 script_family("Web application abuses");
 script_copyright("This script is Copyright (C) 2011 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);
 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( "/phpcoupon", "/coupon", cgi_dirs( port:port ) ) ) {

  if( dir == "/" ) dir = "";
  url = string(dir, "/index.php?page=viewbus&bus='"); 

  if(http_vuln_check(port:port, url:url,pattern:"You have an error in your SQL syntax")) {
    report = report_vuln_url( port:port, url:url );
    security_message( port:port, data:report );
    exit( 0 );
  }
}

exit( 99 );