vsftpd FTP Server Detection (FTP)

# SPDX-FileCopyrightText: 2015 SCHUTZWERK 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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.111050");
  script_version("2026-02-19T05:56:52+0000");
  script_tag(name:"last_modification", value:"2026-02-19 05:56:52 +0000 (Thu, 19 Feb 2026)");
  script_tag(name:"creation_date", value:"2015-11-11 18:00:00 +0100 (Wed, 11 Nov 2015)");
  script_tag(name:"cvss_base", value:"0.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:N");

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

  script_name("vsftpd FTP Server Detection (FTP)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2015 SCHUTZWERK GmbH");
  script_family("Product detection");
  script_dependencies("ftpserver_detect_type_nd_version.nasl");
  script_require_ports("Services/ftp", 21);
  script_mandatory_keys("ftp/vsftpd/detected");

  script_tag(name:"summary", value:"FTP based detection of vsftpd.");

  script_xref(name:"URL", value:"https://security.appspot.com/vsftpd.html");

  exit(0);
}

include("cpe.inc");
include("ftp_func.inc");
include("host_details.inc");
include("port_service_func.inc");
include("os_func.inc");

port = ftp_get_port( default:21 );

banner = ftp_get_banner( port:port );
if( ! banner || "vsftpd" >!< tolower( banner ) )
  exit( 0 );

version = "unknown";
install = "/";

# 220 (vsFTPd 3.0.3)
vers = eregmatch( pattern:"vsftpd ([0-9.]+)", string:tolower( banner ) );
if( ! isnull( vers[1] ) )
  version = vers[1];

set_kb_item( name:"vsftpd/detected", value:TRUE );
set_kb_item( name:"vsftpd/ftp/detected", value:TRUE );

# Seems to only run on Unix-like systems, including Linux
os_register_and_report( os:"Linux/Unix", cpe:"cpe:/o:linux:kernel", port:port, desc:"vsftpd FTP Server Detection (FTP)", runs_key:"unixoide" );

cpe = build_cpe( value:version, exp:"^([0-9.]+)", base:"cpe:/a:vsftpd_project:vsftpd:" );
if( ! cpe )
  cpe = "cpe:/a:vsftpd_project:vsftpd";

register_product( cpe:cpe, location:install, port:port, service:"ftp" );

log_message( data:build_detection_report( app:"vsftpd", version:version, install:install, cpe:cpe,
                                          concluded:banner ),
             port:port );
exit( 0 );