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local ipmi = require "ipmi"
local nmap = require "nmap"
local shortport = require "shortport"
local stdnse = require "stdnse"
local string = require "string"
local table = require "table"
description = [[
Performs IPMI Information Discovery through Channel Auth probes.
]]
---
-- @usage
-- nmap -sU --script ipmi-version -p 623 <host>
--
-- @output
-- PORT STATE SERVICE REASON
-- 623/udp open|filtered unknown
-- | ipmi-version:
-- | Version: IPMI-2.0
-- | UserAuth: password, md5, md2
-- | PassAuth: null_user
-- |_ Level: 1.2,2.0
--
-- @xmloutput
-- <table>
-- <table key="Version">
-- <elem>IPMI-2.0</elem>
-- </table>
--
-- <table key="UserAuth">
-- <elem>password</elem>
-- <elem>md5</elem>
-- <elem>md2</elem>
-- </table>
--
-- <table key="PassAuth">
-- <elem>kg_default</elem>
-- <elem>null_user</elem>
-- </table>
--
-- <table key="Level">
-- <elem>1.2</elem>
-- <elem>2.0</elem>
-- </table>
-- </table>
--
author = "Claudiu Perta <claudiu.perta@gmail.com>"
license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
categories = {"discovery", "safe"}
portrule = shortport.version_port_or_service(623, "asf-rmcp", "udp", {"open", "open|filtered"})
local comma_separated = {
__tostring = function(t) return table.concat(t, ", ") end
}
action = function(host, port)
local request = ipmi.channel_auth_request()
local socket = nmap.new_socket()
socket:set_timeout(
((host.times and host.times.timeout) or 8) * 1000)
socket:connect(host, port, "udp")
-- Send 3 probes
local tries = 3
repeat
socket:send(request)
tries = tries - 1
until tries == 0
local status, reply = socket:receive()
socket:close()
if not status then
stdnse.debug1(string.format("No response (%s)", reply))
return nil
end
nmap.set_port_state(host, port, "open")
-- Invalid reply
local info = ipmi.parse_channel_auth_reply(reply)
if info["ipmi_command"] ~= 56 then
return "IPMI - Invalid response"
end
-- Valid reply
local Version = {}
if info["ipmi_compat_20"] then
table.insert(Version, "IPMI-2.0")
else
table.insert(Version, "IPMI-1.5")
end
local UserAuth = {}
setmetatable(UserAuth, comma_separated)
if info["ipmi_compat_oem_auth"] then
table.insert(UserAuth, "oem_auth")
end
if info["ipmi_compat_password"] then
table.insert(UserAuth, "password")
end
if info["ipmi_compat_md5"] then
table.insert(UserAuth, "md5")
end
if info["ipmi_compat_md2"] then
table.insert(UserAuth, "md2")
end
if info["ipmi_compat_none"] then
table.insert(UserAuth, "null")
end
local PassAuth = {}
setmetatable(PassAuth, comma_separated)
if info["ipmi_compat_20"] and info["ipmi_user_kg"] then
table.insert(PassAuth, "kg_default")
end
if not info["ipmi_user_disable_message_auth"] then
table.insert(PassAuth, "auth_msg")
end
if not info["ipmi_user_disable_user_auth"] then
table.insert(PassAuth, "auth_user")
end
if info["ipmi_user_non_null"] then
table.insert(PassAuth, "non_null_user")
end
if info["ipmi_user_null"] then
table.insert(PassAuth, "null_user")
end
if info["ipmi_user_anonymous"] then
table.insert(PassAuth, "anonymous_user")
end
local ConnInfo = {}
setmetatable(ConnInfo, comma_separated)
if info["ipmi_conn_15"] then
table.insert(ConnInfo, "1.5")
end
if info["ipmi_conn_20"] then
table.insert(ConnInfo, "2.0")
end
local output = stdnse.output_table()
output["Version"] = Version
output["UserAuth"] = UserAuth
output["PassAuth"] = PassAuth
output["Level"] = ConnInfo
if info["ipmi_oem_id"] ~= 0 then
output["OEMID"] = info["ipmi_oem_id"]
end
return output
end
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