david 271045501f Make getNextHopMAC do ND when the dest is IPv6. ...

This is what setTargetNextHopMAC already did, but the code change was
not copied here. This provided a way for NSE scripts to cause an
assertion failure:

local math = require "math"
local packet = require "packet"
function portrule(host, port)
  return port.protocol == "udp"
end
function action(host, port)
  local ip_raw = bin.pack("H", "60000000000d11ff")
    .. host.bin_ip_src .. host.bin_ip
    .. bin.pack(">S", math.random(32768, 65535)) .. bin.pack(">S",
port.number)
    .. bin.pack("H", "000d8082") .. "hello"
  local p = packet.Packet:new(ip_raw, #ip_raw)
  p:udp_count_checksum()
  local s = nmap.new_dnet()
  s:ip_open()
  s:ip_send(p.buf)
end

This would fail with the message "doArp can only handle IPv4 addresses"
when ip_send called getNextHopMAC. (Only with --send-eth.)

2012-09-15 14:57:34 +00:00

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