61 lines
1.4 KiB
Ruby
61 lines
1.4 KiB
Ruby
# -*- coding: binary -*-
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module Msf
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###
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#
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# This module provides methods for Distributed Reflective Denial of Service (DRDoS) attacks
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#
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###
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module Auxiliary::DRDoS
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def initialize(info = {})
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super
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register_advanced_options(
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[
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OptAddress.new('SRCIP', [false, 'Use this source IP']),
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OptInt.new('NUM_REQUESTS', [false, 'Number of requests to send', 1]),
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], self.class)
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end
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def prove_amplification(response_map)
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vulnerable = false
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proofs = []
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response_map.each do |request, responses|
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responses ||= []
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this_proof = ''
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# compute packet amplification
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if responses.size > 1
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vulnerable = true
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this_proof += "#{responses.size}x packet amplification"
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else
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this_proof += 'No packet amplification'
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end
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this_proof += ' and '
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# compute bandwidth amplification
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total_size = responses.map(&:size).reduce(:+)
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bandwidth_amplification = total_size - request.size
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if bandwidth_amplification > 0
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vulnerable = true
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multiplier = total_size / request.size
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this_proof += "a #{multiplier}x, #{bandwidth_amplification}-byte bandwidth amplification"
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else
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this_proof += 'no bandwidth amplification'
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end
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# TODO (maybe): show the request and responses in more detail?
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proofs << this_proof
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end
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[ vulnerable, proofs.join(', ') ]
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end
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def spoofed?
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!datastore['SRCIP'].nil?
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end
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end
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end
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