EFTP < 2.0.8.348 Information Disclosure Vulnerability

# SPDX-FileCopyrightText: 2001 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("1.3.6.1.4.1.25623.1.0.10933");
  script_version("2026-03-18T05:59:10+0000");
  script_tag(name:"last_modification", value:"2026-03-18 05:59:10 +0000 (Wed, 18 Mar 2026)");
  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/3333");
  script_cve_id("CVE-2001-1109");
  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_name("EFTP < 2.0.8.348 Information Disclosure Vulnerability");
  script_category(ACT_ATTACK);
  script_copyright("Copyright (C) 2001 Michel Arboi");
  script_family("FTP");
  script_dependencies("ftpserver_detect_type_nd_version.nasl", "logins.nasl");
  script_require_ports("Services/ftp", 21);
  script_mandatory_keys("ftp/eftp/detected");

  script_tag(name:"summary", value:"The remote FTP server can be used to determine if a given
  file exists on the remote host or not, by adding dot-dot-slashes in front of them.");

  script_tag(name:"insight", value:"For instance, it is possible to determine the presence
  of \autoexec.bat by using the command SIZE or MDTM on ../../../../autoexec.bat");

  script_tag(name:"impact", value:"An attacker may use this flaw to gain more knowledge about
  this host, such as its file layout. This flaw is specially useful when used with other vulnerabilities.");

  script_tag(name:"solution", value:"Update your EFTP server to 2.0.8.348 or change it.");

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

  exit(0);
}

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

port = ftp_get_port( default:21 );
banner = ftp_get_banner( port:port );
if( ! banner || "EFTP " >!< banner )
  exit( 0 );

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

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

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

vuln = 0;

if( login && ftp_authenticate( socket:soc, user:login, pass:pass ) ) {
  for( i = 0; cmd[i]; i = i + 1 ) {
    req = string( cmd[i], " ../../../../../../autoexec.bat\r\n" );
    send(socket:soc, data:req);
    r = ftp_recv_line( socket:soc );
    if( "230 " >< r ) vuln = vuln + 1;
  }
} else {
  # We could not log in or could not download autoexec.
  # We'll just attempt to grab the banner and check for version
  # <= 2.0.7
  # I suppose that any version < 2 is vulnerable...
  r = ftp_recv_line( socket:soc );
  if( egrep( string:r, pattern:".*EFTP version ([01]|2\.0\.[0-7])\..*" ) ) {
    vuln = 1;
  }
}

ftp_close( socket:soc );

if( vuln ) {
  security_message( port:port );
  exit( 0 );
}

exit( 99 );