Golden FTP Server 'DELE' Command Directory Traversal Vulnerability

# SPDX-FileCopyrightText: 2009 Greenbone AG
# 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-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.801073");
  script_version("2024-01-29T05:05:18+0000");
  script_tag(name:"last_modification", value:"2024-01-29 05:05:18 +0000 (Mon, 29 Jan 2024)");
  script_tag(name:"creation_date", value:"2009-12-05 12:49:16 +0100 (Sat, 05 Dec 2009)");
  script_tag(name:"cvss_base", value:"6.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:S/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2024-01-26 17:54:00 +0000 (Fri, 26 Jan 2024)");
  script_cve_id("CVE-2009-4194");
  script_name("Golden FTP Server 'DELE' Command Directory Traversal Vulnerability");
  script_xref(name:"URL", value:"http://secunia.com/advisories/37527");
  script_xref(name:"URL", value:"http://xforce.iss.net/xforce/xfdb/54497");
  script_xref(name:"URL", value:"http://www.exploit-db.com/exploits/10258");

  script_tag(name:"qod_type", value:"remote_banner");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_family("FTP");
  script_dependencies("gb_golden_ftp_server_detect.nasl");
  script_mandatory_keys("Golden/FTP/Free_or_Pro/installed");

  script_tag(name:"impact", value:"Successful exploitation will allow the remote authenticated user
  to access arbitrary folders and delete arbitrary files from the FTP directories.");

  script_tag(name:"affected", value:"Golden FTP Server Pro version 4.30 and prior.
  Golden FTP Server Free version 4.30 and prior.");

  script_tag(name:"insight", value:"The flaw is due to an input validation error in 'DELE' command.
  It is possible to escape the FTP root and delete arbitrary files on the system
  via directory traversal (../../) attack methods.");

  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:"Golden FTP Server is prone to a directory traversal vulnerability.");

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

  exit(0);
}

include("version_func.inc");

if(gftpVer = get_kb_item("Golden/FTP/Pro/Ver"))
{
  # Golden FTP server Pro v4.30 = v4.50
  if(version_is_less_equal(version:gftpVer, test_version:"4.50")){
    security_message(port:0);
  }
}

else if(gfftpVer = get_kb_item("Golden/FTP/Free/Ver"))
{
  # Golden FTP server Free v4.30 = v4.50
  if(version_is_less_equal(version:gfftpVer, test_version:"4.50")){
    security_message(port:0);
  }
}