CVE-2025-48594: Android DisassociationProcessor权限提升漏洞

// CVE-2025-48594 PoC - Android DisassociationProcessor Permission Retention // This PoC demonstrates the improper input validation in onUidImportance method // Note: This is a conceptual PoC based on the vulnerability description // Actual exploitation requires specific Android environment and user interaction public class DisassociationExploit { // Simulated vulnerable method signature public void onUidImportance(int uid, int importance) { // Vulnerable code - improper input validation // The method does not properly validate the state transition // when a companion app is being disassociated // Attacker can manipulate the importance value to retain privileges if (importance == IMPORTANCE_ORPHANED) { // Bug: Should clear companion app privileges here // But due to improper validation, privileges are retained processUidImportance(uid, importance); } } // Normal flow - should revoke privileges on disassociation public void onDisassociation(int uid) { // This should clear all special permissions // But vulnerable implementation allows privilege retention revokeCompanionPrivileges(uid); } // Exploitation scenario: // 1. Install malicious companion app // 2. Establish device association to gain special permissions // 3. Trigger disassociation // 4. Exploit onUidImportance validation flaw to retain permissions // 5. Execute privileged operations without proper authorization } // Reference: https://android.googlesource.com/platform/frameworks/base/+/ea2bcc66534263fac4c337f1a5149704c2262169