### ### Untrusted apps. ### ### This file defines the rules for untrusted apps. An "untrusted ### app" is an APP with UID between APP_AID (10000) ### and AID_ISOLATED_START (99000). ### ### untrusted_app includes all the appdomain rules, plus the ### additional following rules: ### type untrusted_app, domain; permissive untrusted_app; app_domain(untrusted_app) net_domain(untrusted_app) bluetooth_domain(untrusted_app) # Some apps ship with shared libraries and binaries that they write out # to their sandbox directory and then execute. allow untrusted_app app_data_file:file rx_file_perms; allow untrusted_app tun_device:chr_file rw_file_perms; # Internal SDCard rw access. allow untrusted_app sdcard_internal:dir create_dir_perms; allow untrusted_app sdcard_internal:file create_file_perms; # External SDCard rw access. allow untrusted_app sdcard_external:dir create_dir_perms; allow untrusted_app sdcard_external:file create_file_perms; # ASEC allow untrusted_app asec_apk_file:dir { getattr }; allow untrusted_app asec_apk_file:file r_file_perms; # Create tcp/udp sockets allow untrusted_app node_type:{ tcp_socket udp_socket } node_bind; allow untrusted_app self:{ tcp_socket udp_socket } { create_socket_perms accept listen }; # Bind to a particular hostname/address/interface (e.g., localhost) instead of # ANY. Normally, apps should not be listening on all interfaces. allow untrusted_app port:{ tcp_socket udp_socket } name_bind; # Allow the allocation and use of ptys # Used by: https://play.google.com/store/apps/details?id=jackpal.androidterm create_pty(untrusted_app) # Used by Finsky / Android "Verify Apps" functionality when # running "adb install foo.apk". # TODO: Long term, we don't want apps probing into shell data files. # Figure out a way to remove these rules. allow untrusted_app shell_data_file:file r_file_perms; allow untrusted_app shell_data_file:dir r_dir_perms;