96 lines
2.6 KiB
Ruby
96 lines
2.6 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class MetasploitModule < Msf::Auxiliary
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include Msf::Exploit::Remote::SNMPClient
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include Msf::Auxiliary::Report
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include Msf::Auxiliary::Scanner
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'SNMP Set Module',
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'Description' => %q{
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This module, similar to snmpset tool, uses the SNMP SET request
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to set information on a network entity. A OID (numeric notation)
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and a value are required. Target device must permit write access.
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},
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'References' =>
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[
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[ 'URL', 'http://en.wikipedia.org/wiki/Simple_Network_Management_Protocol' ],
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[ 'URL', 'http://www.net-snmp.org/docs/man/snmpset.html' ],
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[ 'URL', 'http://www.oid-info.com/' ],
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],
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'Author' => 'Matteo Cantoni <goony[at]nothink.org>',
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'License' => MSF_LICENSE
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))
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register_options([
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OptString.new('OID', [ true, "The object identifier (numeric notation)"]),
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OptString.new('OIDVALUE', [ true, "The value to set"]),
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], self.class)
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end
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def run_host(ip)
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begin
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oid = datastore['OID'].to_s
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oidvalue = datastore['OIDVALUE'].to_s
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comm = datastore['COMMUNITY'].to_s
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snmp = connect_snmp
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print_status("Try to connect to #{ip}...")
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# get request
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check = snmp.get_value(oid)
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if check.to_s =~ /Null/
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check = '\'\''
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end
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print_status("Check initial value : OID #{oid} => #{check}")
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# set request
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varbind = SNMP::VarBind.new(oid,SNMP::OctetString.new(oidvalue))
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resp = snmp.set(varbind)
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if resp.error_status == :noError
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print_status("Set new value : OID #{oid} => #{oidvalue}")
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# get request
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check = snmp.get_value(oid)
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if check.to_s =~ /Null/
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check = '\'\''
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end
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print_status("Check new value : OID #{oid} => #{check}")
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else
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print_status("#{ip} - OID not writable or does not provide WRITE access with community '#{comm}'")
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end
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rescue ::SNMP::RequestTimeout
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print_error("#{ip} - SNMP request timeout with community '#{comm}'.")
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rescue ::Rex::ConnectionError
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print_error("#{ip} - 'Connection Refused'")
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rescue SNMP::UnsupportedVersion
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print_error("#{ip} - Unsupported SNMP version specified. Select from '1' or '2c'.")
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rescue ::Interrupt
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raise $!
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rescue ::Exception => e
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print_error("#{ip} Error: #{e.class} #{e} #{e.backtrace}")
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ensure
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disconnect_snmp
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end
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end
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end
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