Ensure access to multiple call settings is restricted.
This CL check if access to mobile network configurations are restricted before displaying the button to select CdmaCallForwardOptions, GsmUmtsCallForwardOptions, GsmUmtsAdditionalCallOptions, and GsmUmtsCallBarringOptions. This reolves a security vulnerability where users were able to configure these call settings mobile network setting even after the device owner had applied the no_config_mobile_networks restriction. This CL also prevents these classes from being exported and reverts a less thorough fix to this issue that had been previously applied.
Fixes: 277579183
Test: Manual using adb + POC malicous apk
Change-Id: I9b12cbf5d5b9a1356e7d06ae7583d6c5047db31c
6 files changed