Re: snmp-brute plugin not working in IPv6

[Roberto Greiner <roberto () nead unesp br>]

Hi,

I've looked a bit into the snmp-brute.nse script, to see why it did not
work with ipv6, and I think I found the problem. In the code, there is
function named
local sniff_snmp_responses = function(host, port, lport, result)

Inside it, there is the following code:
  local ip = host.bin_ip_src
  ip =
string.format("%d.%d.%d.%d",ip:byte(1),ip:byte(2),ip:byte(3),ip:byte(4))
  pcap:pcap_open(host.interface, 104, false,"dst host " .. ip .. " and
udp and src port 161 and dst port " .. lport)

Obviously, this will work only with IPv4. My problem is that I have no
knowledge of lua. Actually, my programming knowledge4 altogether is very
limited. Does somebody have a ready made script that would work
properly, or some suggestion to what should replace this code?

Tks,

Roberto Greiner


On 29/04/2015 10:46, Roberto Greiner wrote:
> Hi,
>
> I've been using the nmap snmp-brute plugin for debugging my server
> infra-structure, and after some tests verified that the plugin does not
> work properly over IPv6.
>
> When used with IPv4, it works properly, returning the snmp community.
> But over IPv6, it only reports if the ports is open or not, never
> returning the valid community. SNMP is working through IPv6, which I
> verified using snmpwalk, but the script does not report the valid
> community as would be expected.
>
> Roberto Greiner
>
> PS: Tested using Debian 7 and 8 servers, 64 bits, using the following
> nmap version, locally  compiled(Debian 7 output):
> Nmap version 6.47 ( http://nmap.org )
> Platform: x86_64-unknown-linux-gnu
> Compiled with: nmap-liblua-5.2.3 openssl-1.0.1e libpcre-8.30
> nmap-libpcap-1.2.1 nmap-libdnet-1.12 ipv6
> Compiled without:
> Available nsock engines: epoll poll select
>
> PS2: Sorry if this is the wrong list to report this problem. If this
> mail should have gone to another list, please indicate the correct one.


-- 
  -----------------------------------------------------
                Marcos Roberto Greiner

   Os otimistas acham que estamos no melhor dos mundos
    Os pessimistas tem medo de que isto seja verdade
                                  James Branch Cabell
  -----------------------------------------------------


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