You might be aware of the Master key bug in Android that could expose your phone to intruders and if you don’t want to wait for the OEM to release the update, you might want to try an alternative way that can fix it.
Here it is:
Requisites:
1. Rooted phone
2. Android 4.0 or later
3. Xposed Framework
4. Master Key dual fix module
Instructions:
1. Install the Xposed framework if not already done it.
- Download XposedInstaller.apk [Download here] and install it
- Launch the Xposed Installer and click on “Install/Update”
- Reboot
2. Install the Master Key dual fix module
- Download MasterKeyDualFix-1.3.apk [Download here]
- Install it
- Follow the Xposed notification (see the notification bar) about a new module being available, and on the list of modules activate Master Key dual fix
- Reboot
Thats it, you’ve successfully patched the bug! If you want to confirm it just scan your phone with the official Bluebox Security Scanner.
Screenshots:
Source : Xda-developers.com