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Screen/Audio Capture Vulnerability Impacts Lion's Share of Android Devices

A vulnerability that allows malicious applications to capture screen contents and record audio without a user’s knowledge impacts over 78% of Android devices, researchers claim.

The issue is caused by the MediaProjection service introduced by Google in the Android Framework on Android 5.0. This service allows applications to capture the screen or record audio without special permissions, by simply requesting access via an Intent.

Prior to Android 5.0, an application would either have to run with root privileges or be signed with the device’s release keys to use system protected permissions to capture screen contents, MWR Labs security researchers explain. With the introduction of MediaProjection, no permissions are required in the AndroidManifest.xml to use the service.

When an application requires access to this system Service, a SystemUI pop-up is displayed to warn the user that the program wants to capture the screen. According to MWR, however, an attacker could overlay...(continued)

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