FTPGetter FTP Client Directory Traversal Vulnerability

# Copyright (C) 2010 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("1.3.6.1.4.1.25623.1.0.902233");
  script_version("2023-02-28T10:20:42+0000");
  script_tag(name:"last_modification", value:"2023-02-28 10:20:42 +0000 (Tue, 28 Feb 2023)");
  script_tag(name:"creation_date", value:"2010-08-25 17:02:03 +0200 (Wed, 25 Aug 2010)");
  script_cve_id("CVE-2010-3103");
  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_name("FTPGetter FTP Client Directory Traversal Vulnerability");
  script_xref(name:"URL", value:"http://secunia.com/advisories/41069");
  script_xref(name:"URL", value:"http://www.htbridge.ch/advisory/directory_traversal_in_ftpgetter.html");

  script_tag(name:"qod_type", value:"executable_version");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2010 Greenbone Networks GmbH");
  script_family("FTP");
  script_dependencies("smb_reg_service_pack.nasl");
  script_require_ports(139, 445);
  script_mandatory_keys("SMB/WindowsVersion");
  script_tag(name:"insight", value:"The flaw exists due to error in handling of certain crafted file
names. It does not properly sanitise filenames containing directory traversal
sequences that are received from an FTP server.");
  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:"FTPGetter FTP Client is prone to a directory traversal vulnerability.");
  script_tag(name:"impact", value:"Successful exploitation will allow attackers to write files into
a user's Startup folder to execute malicious code when the user logs on.");
  script_tag(name:"affected", value:"FTPGetter FTP Client 3.51.0.05 and prior.");
  script_tag(name:"solution_type", value:"WillNotFix");
  exit(0);
}


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

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

key = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\";

if(!registry_key_exists(key:key)) {
    exit(0);
}

foreach item (registry_enum_keys(key:key))
{
  fgName = registry_get_sz(key:key + item, item:"DisplayName");

  if("FTPGetter" >< fgName)
  {
    fgpath = registry_get_sz(key: key + item , item:"DisplayIcon");
    if(!isnull(fgpath))
    {
      share = ereg_replace(pattern:"([A-Z]):.*", replace:"\1$", string:fgpath);
      file = ereg_replace(pattern:"[A-Z]:(.*)", replace:"\1", string:fgpath);

      fgVer = GetVer(file:file, share:share);
      if(fgVer != NULL)
      {
        if(version_is_less_equal(version:fgVer, test_version:"3.51.0.05"))
        {
          security_message( port: 0, data: "The target host was found to be vulnerable" );
          exit(0);
        }
      }
    }
  }
}