Chilkat Crypt ActiveX Control 'ChilkatCrypt2.dll' File Overwrite Vulnerability

# Copyright (C) 2008 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# 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.

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.900171");
  script_version("2022-05-11T11:17:52+0000");
  script_tag(name:"last_modification", value:"2022-05-11 11:17:52 +0000 (Wed, 11 May 2022)");
  script_tag(name:"creation_date", value:"2008-11-11 15:58:44 +0100 (Tue, 11 Nov 2008)");
  script_cve_id("CVE-2008-5002");
  script_copyright("Copyright (C) 2008 Greenbone Networks GmbH");
  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_category(ACT_GATHER_INFO);
  script_family("General");
  script_name("Chilkat Crypt ActiveX Control 'ChilkatCrypt2.dll' File Overwrite Vulnerability");
  script_dependencies("smb_reg_service_pack.nasl");
  script_mandatory_keys("SMB/WindowsVersion");
  script_require_ports(139, 445);

  script_xref(name:"URL", value:"http://milw0rm.com/exploits/6963");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/32073");
  script_xref(name:"URL", value:"http://secunia.com/advisories/32513/");

  script_tag(name:"impact", value:"Successful exploitation will allow execution of arbitrary code.");
  script_tag(name:"affected", value:"Chilkat Crypt ActiveX Component version 4.3.2.1 and prior");
  script_tag(name:"insight", value:"The vulnerability is due to the error in the 'ChilkatCrypt2.dll' ActiveX
  Control component that does not restrict access to the 'WriteFile()' method.");
  script_tag(name:"solution", value:"No known solution was made available for at least one year since the 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.");
  script_tag(name:"summary", value:"Chilkat Crypt is prone to an ActiveX Control based arbitrary file overwrite vulnerability.");

  script_tag(name:"qod_type", value:"registry");
  script_tag(name:"solution_type", value:"WillNotFix");

  exit(0);
}

include("smb_nt.inc");
include("secpod_smb_func.inc");

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

key = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\";
enumKeys = registry_enum_keys(key:key);

foreach entry (enumKeys)
{
  if("Chilkat Crypt ActiveX" ><
     registry_get_sz(key: key + entry, item:"DisplayName"))
  {
    if(egrep(pattern:"^4\.([0-2](\..*)?|3(\.[0-2](\.[01])?)?)$",
             string:registry_get_sz(key: key + entry, item:"DisplayVersion")))
    {
      clsid = "{3352B5B9-82E8-4FFD-9EB1-1A3E60056904}";
      regKey = "SOFTWARE\Classes\CLSID\" + clsid;
      if(registry_key_exists(key:regKey))
      {
        activeKey = "SOFTWARE\Microsoft\Internet Explorer\" +
                    "ActiveX Compatibility\" + clsid;
        killBit = registry_get_dword(key:activeKey, item:"Compatibility Flags");
        if(killBit && (int(killBit) == 1024)){
          exit(0);
        }
        security_message( port: 0, data: "The target host was found to be vulnerable" );
      }
    }
    exit(0);
  }
}