Need

Restrict application permissions to the minimum required for functionality

Context

Description

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.app">

    <uses-permission android:name="android.permission.READ_SMS" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.RECORD_AUDIO" />

        android:allowBackup="true"...

The above `AndroidManifest.xml` file defines excessive permissions that are not required for the core functionality of the application. - `READ_SMS` allows reading SMS messages, which is sensitive data. - `WRITE_EXTERNAL_STORAGE` enables writing to external storage, which can be exploited for data exfiltration. - `RECORD_AUDIO` allows capturing microphone input, which could be used for eavesdropping. If an attacker gains control over the app or exploits a vulnerability, these excessive permissions could be abused to access private user data.

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.app">

    <!-- Only essential permissions should be included -->
    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:theme="@style/AppTheme">...

The secure code ensures that only the **necessary** permissions are granted. If the application does not require access to SMS, external storage, or microphone input, these permissions should be **removed**. Before adding any permission, ensure that it is essential for the app's functionality and follows the **principle of least privilege**.

References