metasploit-framework/modules/auxiliary/scanner/snmp/snmp_set.rb

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##
# $Id: $
##
##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##
require 'msf/core'
class Metasploit3 < Msf::Auxiliary
include Msf::Exploit::Remote::SNMPClient
include Msf::Auxiliary::Report
include Msf::Auxiliary::Scanner
def initialize(info = {})
super(update_info(info,
'Name' => 'SNMP Set Module',
'Version' => '$Revision: $',
'Description' => %q{
This module, similar to snmpset tool, uses the SNMP SET request
to set information on a network entity. A OID (numeric notation)
and a value are required. Target device must permit write access.
},
'References' =>
[
[ 'URL', 'http://en.wikipedia.org/wiki/Simple_Network_Management_Protocol' ],
[ 'URL', 'http://www.net-snmp.org/docs/man/snmpset.html' ],
[ 'URL', 'http://www.oid-info.com/' ],
],
'Author' => 'Matteo Cantoni <goony[at]nothink.org>',
'License' => MSF_LICENSE
))
register_options([
OptString.new('OID', [ true, "The object identifier (numeric notation)"]),
OptString.new('OIDVALUE', [ true, "The value to set"]),
], self.class)
end
def run_host(ip)
begin
oid = datastore['OID'].to_s
oidvalue = datastore['OIDVALUE'].to_s
comm = datastore['COMMUNITY'].to_s
snmp = connect_snmp
print_status("Try to connect to #{ip}...");
# get request
check = snmp.get_value(oid)
if check.to_s =~ /Null/
check = '\'\''
end
print_status("Check initial value : OID #{oid} => #{check}")
# set request
varbind = SNMP::VarBind.new(oid,SNMP::OctetString.new(oidvalue))
resp = snmp.set(varbind)
if resp.error_status == :noError
print_status("Set new value : OID #{oid} => #{oidvalue}")
# get request
check = snmp.get_value(oid)
if check.to_s =~ /Null/
check = '\'\''
end
print_status("Check new value : OID #{oid} => #{check}")
else
print_status("#{ip} not provides WRITE access with community '#{comm}'")
end
disconnect_snmp
rescue ::SNMP::RequestTimeout
print_error("Can't connect to #{ip} with community '#{comm}'")
rescue ::Rex::ConnectionRefused
print_error("Can't connect to #{ip} : 'Connection Refused'")
rescue ::Interrupt
raise $!
rescue ::Exception => e
print_error("#{ip} Error: #{e.class} #{e} #{e.backtrace}")
end
end
end