mageni/mageni

###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_junos_snmp_version.nasl 9633 2018-04-26 14:07:08Z jschulte $
#
# JunOS SNMP Detection
#
# Authors:
# Michael Meyer <michael.meyer@greenbone.net>
#
# Copyright:
# Copyright (c) 2013 Greenbone Networks GmbH
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version
#
# 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("1.3.6.1.4.1.25623.1.0.103809");
  script_version("$Revision: 9633 $");
  script_tag(name:"last_modification", value:"$Date: 2018-04-26 16:07:08 +0200 (Thu, 26 Apr 2018) $");
  script_tag(name:"creation_date", value:"2013-10-14 14:24:09 +0200 (Mon, 14 Oct 2013)");
  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("JunOS SNMP Detection");
  script_category(ACT_GATHER_INFO);
  script_family("Product detection");
  script_copyright("This script is Copyright (C) 2013 Greenbone Networks GmbH");
  script_dependencies("gb_snmp_sysdesc.nasl");
  script_require_udp_ports("Services/udp/snmp", 161);
  script_mandatory_keys("SNMP/sysdesc/available");

  script_tag(name:"summary", value:"This script performs SNMP based detection of JunOS.");

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

  exit(0);
}

include("dump.inc");
include("host_details.inc");
include("snmp_func.inc");

function parse_result(data) {

  if(strlen(data) < 8) return FALSE;

  for(v=0; v < strlen(data); v++) {
      if(ord(data[v]) == 43 && ord(data[v-1]) == 11) {
        ok = TRUE;
        break;
      }
      oid_len = ord(data[v]);
  }

  if(!ok || oid_len < 8)return FALSE;

  tmp = substr(data,(v+oid_len+2));

  if (!isprint (c:tmp[0])) {
    tmp = substr(tmp,1,strlen(tmp)-1);
  }

  model = eregmatch(pattern:"^Juniper ([^ ]+)", string:tmp);
  if(isnull(model[1]))return FALSE;

  return model[1];


}

SCRIPT_DESC = "Junos SNMP Detection";

port    = get_snmp_port(default:161);
sysdesc = get_snmp_sysdesc(port:port);
if(!sysdesc) exit(0);

# Example:
#Juniper Networks, Inc. m320 internet router, kernel JUNOS 10.1R3.7 #0: 2010-07-10 05:44:37 UTC builder@queth.juniper.net:/volume/build/junos/10.1/release/10.1R3.7/obj-i386/bsd/sys/compile/JUNIPER Build date: 2010-07-10 05:00:11 UTC Copyright (c) 1996
if("JUNOS" >!< sysdesc)exit(0);

junos_version = eregmatch(pattern:"JUNOS ([0-9.]+[A-Z][^ ,]+)", string:sysdesc);
if(isnull(junos_version[1]))exit(0);

junos_ver = junos_version[1];
cpe = 'cpe:/o:juniper:junos:' + junos_ver;

register_and_report_os( os:"JunOS", cpe:cpe, banner_type:"SNMP sysdesc", banner:sysdesc, port:port, proto:"udp", desc:SCRIPT_DESC, runs_key:"unixoide" );

register_product(cpe: cpe, location: port + "/udp", port: port, proto: "udp", service: "snmp");

set_kb_item(name:"Junos/Version", value:junos_ver);
set_kb_item(name:"Host/OS/SNMP", value:"JUNOS");
set_kb_item(name:"Host/OS/SNMP/Confidence", value:100);

build = eregmatch(pattern:"Build date: ([^ ]+)", string:sysdesc);
if(!isnull(build[1]))
  set_kb_item(name:"Junos/Build", value:build[1]);

report_ver = junos_ver;

if(!isnull(build[1])) report_ver += ', Build: ' + build[1];

log_message(data:'The remote host is running Junos ' + report_ver + '\nCPE: '+ cpe + '\nConcluded: ' + sysdesc + '\n', port:port, proto:"udp");

community = snmp_get_community( port:port );
if(!community)community = "public";

SNMP_BASE = 38;
COMMUNITY_SIZE = strlen(community);
sz = COMMUNITY_SIZE % 256;

len = SNMP_BASE + COMMUNITY_SIZE;

for (i=0; i<3; i++) {

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

  # snmpget -v<version> -c <community> <host> 1.3.6.1.4.1.2636.3.1.2.0
  sendata = raw_string(0x30,len,0x02,0x01,i,0x04,sz) +
            community +
            raw_string(0xa0,0x1f,0x02,0x04,0x1c,0xba,0x54,0x29,
                       0x02,0x01,0x00,0x02,0x01,0x00,0x30,0x11,
                       0x30,0x0f,0x06,0x0b,0x2b,0x06,0x01,0x04,
                       0x01,0x94,0x4c,0x03,0x01,0x02,0x00,0x05,
                       0x00);

  send(socket:soc, data:sendata);
  result = recv(socket:soc, length:400, timeout:1);
  close(soc);

  if(!result || ord(result[0]) != 48)continue;

  if(!res = parse_result(data:result))continue;

  set_kb_item(name:"Junos/model", value: res);
  log_message(data:'The remote host is a Junos ' + res + '\n', port:port, proto:"udp");
  exit(0);

}

exit(0);