VeryDOC PDF Viewer ActiveX Control Buffer Overflow Vulnerability

###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_verydoc_pdf_viewer_activex_bof.nasl 5370 2017-02-20 15:24:26Z cfi $
#
# VeryDOC PDF Viewer ActiveX Control Buffer Overflow Vulnerability
#
# Authors:
# Sujit Ghosal <[email protected]>
#
# Copyright:
# Copyright (c) 2008 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_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.

  A workaround is to set the killbit for the CLSID {433268D7-2CD4-43E6-AA24-2188672E7252}
  http://support.microsoft.com/kb/240797
  For updates refer to http://verydoc.com/pdf-viewer-ocx.html";

tag_impact = "Successful exploitation will let the attacker execute arbitrary codes in the
  context of the application to cause heap based buffer overflow and can
  compromise a vulnerable system.";
tag_affected = "VeryDOC, PDF Viewer Pdfview.ocx version 2.0.0.1 and prior on Windows.";
tag_insight = "This flaw is due to boundary error in the OpenPDF function method from the
  PDFVIEW.PdfviewCtrl.1 ActiveX control (pdfview.ocx) which fails to properly
  validate the input data passed as large string.";
tag_summary = "This host is installed with VeryDOC PDF Viewer and is prone to
  Buffer Overflow vulnerability.";

if(description)
{
  script_id(800207);
  script_version("$Revision: 5370 $");
  script_tag(name:"last_modification", value:"$Date: 2017-02-20 16:24:26 +0100 (Mon, 20 Feb 2017) $");
  script_tag(name:"creation_date", value:"2008-12-16 16:12:00 +0100 (Tue, 16 Dec 2008)");
  script_tag(name:"cvss_base", value:"9.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_cve_id("CVE-2008-5492");
  script_bugtraq_id(32313);
  script_name("VeryDOC PDF Viewer ActiveX Control Buffer Overflow Vulnerability");

  script_xref(name : "URL" , value : "http://secunia.com/Advisories/32725");
  script_xref(name : "URL" , value : "http://www.milw0rm.com/exploits/7126");
  script_xref(name : "URL" , value : "http://www.bmgsec.com.au/advisories/openpdf.txt");
  script_xref(name : "URL" , value : "http://news.debuntu.org/content/9123-cve-2008-5492-verydoc_pdf_viewer");

  script_category(ACT_GATHER_INFO);
  script_tag(name:"qod_type", value:"registry");
  script_copyright("Copyright (C) 2008 Greenbone Networks GmbH");
  script_family("Buffer overflow");
  script_dependencies("secpod_reg_enum.nasl");
  script_mandatory_keys("SMB/WindowsVersion");
  script_require_ports(139, 445);
  script_tag(name : "impact" , value : tag_impact);
  script_tag(name : "affected" , value : tag_affected);
  script_tag(name : "insight" , value : tag_insight);
  script_tag(name : "summary" , value : tag_summary);
  script_tag(name : "solution" , value : tag_solution);
  script_tag(name:"solution_type", value:"WillNotFix");
  exit(0);
}


include("smb_nt.inc");

if(!get_kb_item("SMB/WindowsVersion")){
  exit(0);
}

# PDF Viewer ClSID Key
regKey = registry_key_exists(key:"SOFTWARE\Classes\CLSID\" +
                       "{433268D7-2CD4-43E6-AA24-2188672E7252}");
if(!regKey){
  exit(0);
}

# Workaround Check
clsid = "{433268D7-2CD4-43E6-AA24-2188672E7252}";
activeKey = "SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\" + clsid;
killBit = registry_get_dword(key:activeKey, item:"Compatibility Flags");

if(killBit && (int(killBit) == 1024)){
  exit(0);
}
else{
  security_message(0);
}