Daily Shaarli
May 26, 2017
Cloak & Dagger is a new class of potential attacks affecting Android devices. These attacks 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. These attacks only require two permissions that, in case the app is installed from the Play Store, the user does not need to explicitly grant and for which she is not even notified. Our user study indicates that these attacks are practical. These attacks affect all recent versions of Android (including the latest version, Android 7.1.2), and they are yet to be fixed.
MouseJack is a class of vulnerabilities that affects the vast majority of wireless, non-Bluetooth keyboards and mice. These peripherals are 'connected' to a host computer using a radio transceiver, commonly a small USB dongle. Since the connection is wireless, and mouse movements and keystrokes are sent over the air, it is possible to compromise a victim's computer by transmitting specially-crafted radio signals using a device which costs as little as $15.
An attacker can launch the attack from up to 100 meters away. The attacker is able to take control of the target computer, without physically being in front of it, and type arbitrary text or send scripted commands. It is therefore possible to perform rapidly malicious activities without being detected. The MouseJack exploit centers around injecting unencrypted keystrokes into a target computer. Mouse movements are usually sent unencrypted, and keystrokes are often encrypted (to prevent eavesdropping what is being typed). However the MouseJack vulnerability takes advantage of affected receiver dongles, and their associated software, allowing unencrypted keystrokes transmitted by an attacker to be passed on to the computer's operating system as if the victim had legitimately typed them.