Qbik WinGate HTTP Proxy Server Access Controls Bypass Vulnerability

###############################################################################
# OpenVAS Vulnerability Test
# $Id: secpod_wingate_http_proxy_serv_acl_bypass_vuln.nasl 5390 2017-02-21 18:39:27Z mime $
#
# Qbik WinGate HTTP Proxy Server Access Controls Bypass Vulnerability
#
# Authors:
# Sharath S <[email protected]>
#
# Copyright:
# Copyright (c) 2009 SecPod, http://www.secpod.com
#
# 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_impact = "Successful exploitation will let the attacker obtain sensitive information
  i.e. Intranet webpage details.
  Impact Level: Application/Network";
tag_affected = "WinGate version 6.0 to 6.5.2 Build 1217.";
tag_insight = "This issue occurs when the proxy makes a forwarding decision based on the
  'Host' HTTP header instead of the destination IP address while the proxy
  server works in transparent interception mode.";
tag_solution = "Upgrade to latest version,
  For updates refer to http://www.wingate.com";
tag_summary = "This host is running WinGate HTTP Proxy Server and is prone to
  access controls bypass vulnerability.";

if(description)
{
  script_id(900325);
  script_version("$Revision: 5390 $");
  script_tag(name:"last_modification", value:"$Date: 2017-02-21 19:39:27 +0100 (Tue, 21 Feb 2017) $");
  script_tag(name:"creation_date", value:"2009-03-26 11:19:12 +0100 (Thu, 26 Mar 2009)");
  script_tag(name:"cvss_base", value:"5.4");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:H/Au:N/C:C/I:N/A:N");
  script_cve_id("CVE-2009-0802");
  script_bugtraq_id(33858);
  script_name("Qbik WinGate HTTP Proxy Server Access Controls Bypass Vulnerability");
  script_xref(name : "URL" , value : "http://secunia.com/advisories/34020");
  script_xref(name : "URL" , value : "http://www.kb.cert.org/vuls/id/435052");

  script_tag(name:"qod_type", value:"remote_banner");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2009 SecPod");
  script_family("Web application abuses");
  script_dependencies("secpod_wingate_detect.nasl", "gb_get_http_banner.nasl");
  script_mandatory_keys("WinGate/Ver","WinGate/banner");
  script_require_ports("Services/www", 80);
  script_tag(name : "impact" , value : tag_impact);
  script_tag(name : "affected" , value : tag_affected);
  script_tag(name : "insight" , value : tag_insight);
  script_tag(name : "solution" , value : tag_solution);
  script_tag(name : "summary" , value : tag_summary);
  exit(0);
}


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

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

banner = get_http_banner(port:GatePort);
if("WinGate" >< banner && "WinGate Engine" >!< banner)
{
  winGateVer = get_kb_item("WinGate/Ver");
  if(winGateVer != NULL)
  {
    # Check for version 6.5.2 build 1217 and prior
    if(version_in_range(version:winGateVer, test_version:"6.0",
                        test_version2:"6.5.2.1217")){
      security_message(GatePort);
    }
  }
}