All Android devices between 5.0 to 7.1.2 are affected with the vulnerability in MediaProjection that allow an attacker to capture the user’s screen and to record system audio.
From Android version 5.0 Google introduced MediaProjection service to give the developers an ability to capture screen and record audio, they no longer need root privileges or to sign their release keys.
A SystemUI pop-up comes up warning users requesting permission that their screen is captured, attacker’s trick this to capture the user’s screen should the user tap of the SystemUI popup it has been overlayed by the attacker with an arbitrary message.
Researchers from MWR lab discovered this vulnerability and the primary cause of the vulnerability due to partially obscured SystemUI pop-ups which Android versions unable to detect.
Patched in Version 8.0 – Android Bug
MWR lab’s advised developers to defend the attack enabling the FLAG_SECURE layout parameter from the application window manager for the complete report.
Vulnerability reported to Google and currently, it has been patched with version 8.0 and the lower versions are still remain vulnerable.At it is still unclear about Google plans for patches in older versions.
Researchers said according to Google Android developers dashboard approximately 77.5% active Android devices are vulnerable to this attack.
Recently we heard about Toast Overlay attack which affects all Android Version Except 8.0. It allows an attacker to draw on top of other windows and apps running on the affected device. With this recently found overlay assault does not require a particular permissions or conditions to be compelling.
And the potential attack Cloak & Dagger allow a malicious app to completely control the UI feedback loop and take over the device — without giving the user a chance to notice the malicious activity.
Source : GBHackers