Microsoft .NET '__VIEWSTATE' Cross-Site Scripting vulnerability

###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_ms_dotnet_viewstate_xss_vuln.nasl 6519 2017-07-04 14:08:14Z cfischer $
#
# Microsoft .NET '__VIEWSTATE'  Cross-Site Scripting Vulnerability
#
# Authors:
# Antu Sanadi <[email protected]>
#
# Copyright:
# Copyright (c) 2010 Greenbone Networks GmbH, http://www.greenbone.net
#
# 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 could allow attackers to conduct
cross-site scripting attacks against the form control via the __VIEWSTATE
parameter.";

tag_affected = "Microsoft .NET version 3.5 and prior.";

tag_insight = "The flaw is due to error in the handling of the '__VIEWSTATE'
parameter in 'ASP.NET', which does not properly handle an unencrypted view
state.";

tag_solution = "No solution or patch was made available for at least one year
since disclosure of this vulnerability. Likely none will be provided anymore.
General solution options are to upgrade to a newer release, disable respective
features, remove the product or replace the product by another one.";

tag_summary = "The host is running Microsoft .NET and is prone to Cross-Site
Scripting Vulnerability.";

if(description)
{
  script_id(801344);
  script_version("$Revision: 6519 $");
  script_tag(name:"last_modification", value:"$Date: 2017-07-04 16:08:14 +0200 (Tue, 04 Jul 2017) $");
  script_tag(name:"creation_date", value:"2010-06-09 08:34:53 +0200 (Wed, 09 Jun 2010)");
  script_cve_id("CVE-2010-2088");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");
  script_name("Microsoft .NET '__VIEWSTATE'  Cross-Site Scripting vulnerability");
  script_xref(name : "URL" , value : "https://www.trustwave.com/spiderlabs/advisories/TWSL2010-001.txt");
  script_xref(name : "URL" , value : "http://www.blackhat.com/presentations/bh-dc-10/Byrne_David/BlackHat-DC-2010-Byrne-SGUI-slides.pdf");

  script_tag(name:"qod_type", value:"remote_banner");
  script_copyright("Copyright (c) 2010 Greenbone Networks GmbH");
  script_category(ACT_GATHER_INFO);
  script_family("Windows");
  script_dependencies("remote-detect-MSdotNET-version.nasl");
  script_mandatory_keys("dotNET/install", "aspNET/installed", "dotNET/version");
  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);
  script_tag(name:"solution_type", value:"WillNotFix");
  exit(0);
}


include("version_func.inc");

## Get the version from KB
dotNet = get_kb_item("dotNET/install");
if(!dotNet){
  exit(0);
}

apsdotNet = get_kb_item("aspNET/installed");
if(!aspdotNet){
  exit(0);
}

dotNet = get_kb_item("dotNET/version");
if(!dotNet){
  exit(0);
}

## Check for Microsoft .NET version less than or equal 3.5
if(version_is_less_equal(version:dotNet, test_version:"3.5")){
   security_message(0);
}