Nmap NSE: SSH Hostkey

2010-11-25T00:00:00
ID OPENVAS:1361412562310801633
Type openvas
Reporter Copyright (C) 2010 NSE-Script: The Nmap Security Scanner; NASL-Wrapper: Greenbone Networks GmbH
Modified 2020-03-26T00:00:00

Description

This script attempts to get the target SSH server

                                        
                                            ###############################################################################
# OpenVAS Vulnerability Test
#
# Wrapper for Nmap SSH Hostkey NSE script.
#
# Authors:
# NSE-Script: Sven Klemm
# NASL-Wrapper: Sooraj KS <kssooraj@secpod.com>
#
# Copyright:
# NSE-Script: The Nmap Security Scanner (http://nmap.org)
# NASL-Wrapper: Copyright (C) 2010 Greenbone Networks GmbH (http://www.greenbone.net)
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), as published by the Free Software Foundation.
#
# 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("1.3.6.1.4.1.25623.1.0.801633");
  script_version("2020-03-26T13:48:10+0000");
  script_tag(name:"last_modification", value:"2020-03-26 13:48:10 +0000 (Thu, 26 Mar 2020)");
  script_tag(name:"creation_date", value:"2010-11-25 08:32:22 +0100 (Thu, 25 Nov 2010)");
  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_name("Nmap NSE: SSH Hostkey");
  script_category(ACT_GATHER_INFO);
  script_tag(name:"qod_type", value:"remote_analysis");
  script_copyright("Copyright (C) 2010 NSE-Script: The Nmap Security Scanner; NASL-Wrapper: Greenbone Networks GmbH");
  script_family("Nmap NSE");
  script_dependencies("ssh_detect.nasl", "nmap_nse.nasl");
  script_require_ports("Services/ssh", 22);
  script_mandatory_keys("Tools/Present/nmap", "Tools/Launch/nmap_nse");

  script_add_preference(name:"ssh_hostkey :", value:"full;bubble;visual;all", type:"radio");

  script_tag(name:"summary", value:"This script attempts to get the target SSH server's key fingerprint
  and public key.

  This is a wrapper on the Nmap Security Scanner's ssh-hostkey.nse");

  exit(0);
}

if((! get_kb_item("Tools/Present/nmap5.21") &&
   ! get_kb_item("Tools/Present/nmap5.51")) ||
   ! get_kb_item("Tools/Launch/nmap_nse")) {
 exit(0);
}

include("ssh_func.inc");
include("misc_func.inc");

port = ssh_get_port(default:22);

argv =  make_list("nmap", "--script=ssh-hostkey.nse", "-p", port, get_host_ip());

if( pref = script_get_preference("ssh_hostkey :")){
  argv = make_list(argv, "--script-args=ssh_hostkey=" + pref);
}

if(TARGET_IS_IPV6())
  argv = make_list(argv, "-6");

timing_policy = get_kb_item("Tools/nmap/timing_policy");
if(timing_policy =~ '^-T[0-5]$')
  argv = make_list(argv, timing_policy);

source_iface = get_preference("source_iface");
if(source_iface =~ '^[0-9a-zA-Z:_]+$') {
  argv = make_list(argv, "-e");
  argv = make_list(argv, source_iface);
}

res = pread(cmd:"nmap", argv:argv);

if(res)
{
  foreach line (split(res))
  {
    if(ereg(pattern:"^\|",string:line)) {
      result +=  substr(chomp(line),2) + '\n';
    }

    error = eregmatch(string:line, pattern:"^nmap: (.*)$");
    if (error) {
      msg = string('Nmap command failed with following error message:\n', line);
      log_message(data : msg, port:port);
    }
  }

  if("ssh-hostkey" >< result) {
    msg = string('Result found by Nmap Security Scanner (ssh-hostkey.nse) ',
                'http://nmap.org:\n\n', result);
    log_message(data : msg, port:port);
  }
}
else
{
  msg = string('Nmap command failed entirely:\n');
  log_message(data : msg, port:port);
}