Tethr

Tethr is an Android application that demonstrates CVE-2017-0554, a vulnerability that allows bypassing carrier tethering provisioning checks on unrooted devices. The proof-of-concept app exploits system property manipulation to enable mobile hotspot functionality without carrier approval.

The vulnerability affects Android versions prior to 7.1.2 by allowing modification of tethering-related system properties through reflection and system service manipulation. This research was conducted to highlight security weaknesses in Android’s tethering permission model.