EFTP <= 2.0.7.337 Installation Directory Disclosure

# SPDX-FileCopyrightText: 2002 Michel Arboi
# 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("1.3.6.1.4.1.25623.1.0.11093");
  script_version("2023-12-20T05:05:58+0000");
  script_tag(name:"last_modification", value:"2023-12-20 05:05:58 +0000 (Wed, 20 Dec 2023)");
  script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/3331");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/3333");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_cve_id("CVE-2001-1109");
  script_name("EFTP <= 2.0.7.337 Installation Directory Disclosure");
  script_category(ACT_GATHER_INFO);
  script_tag(name:"qod_type", value:"remote_vul");
  script_copyright("Copyright (C) 2002 Michel Arboi");
  script_family("FTP");
  script_dependencies("ftpserver_detect_type_nd_version.nasl", "logins.nasl");
  script_require_ports("Services/ftp", 21);
  script_require_keys("ftp/login");

  script_tag(name:"solution", value:"Update your FTP server.");

  script_tag(name:"summary", value:"The remote FTP server can be used to determine the
  installation directory by sending a request on an unexisting file.");

  script_tag(name:"vuldetect", value:"Sends a crafted FTP request and checks the response.");

  script_tag(name:"impact", value:"An attacker may use this flaw to gain more knowledge about
  this host, such as its filesystem layout.");

  script_tag(name:"affected", value:"EFTP Version 2.0.7.337 is known to be affected.");

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

  exit(0);
}

include("ftp_func.inc");
include("misc_func.inc");
include("port_service_func.inc");

cmd[0] = "GET";
cmd[1] = "MDTM";

kb_creds = ftp_get_kb_creds();
login = kb_creds["login"];
pass = kb_creds["pass"];

port = ftp_get_port(default:21);

soc = open_sock_tcp(port);
if(! soc) exit(0);

if( ftp_authenticate(socket:soc, user:login, pass:pass))
{
  for (i = 0; i < 2; i++)
  {
    vt_strings = get_vt_strings();
    req = string(cmd[i], " ", vt_strings["lowercase_rand"], "\r\n");
    send(socket:soc, data:req);
    r = ftp_recv_line(socket:soc);
    if (egrep(string:r, pattern:" '[C-Z]:\\'"))
    {
      security_message(port:port);
      ftp_close(socket:soc);
      exit(0);
    }
  }
}