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110 lines
3.9 KiB
110 lines
3.9 KiB
# network manager |
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type netd, domain, mlstrustedsubject; |
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type netd_exec, exec_type, file_type; |
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net_domain(netd) |
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# in addition to ioctls whitelisted for all domains, grant netd priv_sock_ioctls. |
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allowxperm netd self:udp_socket ioctl priv_sock_ioctls; |
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r_dir_file(netd, cgroup) |
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allow netd system_server:fd use; |
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allow netd self:capability { net_admin net_raw kill }; |
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# Note: fsetid is deliberately not included above. fsetid checks are |
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# triggered by chmod on a directory or file owned by a group other |
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# than one of the groups assigned to the current process to see if |
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# the setgid bit should be cleared, regardless of whether the setgid |
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# bit was even set. We do not appear to truly need this capability |
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# for netd to operate. |
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dontaudit netd self:capability fsetid; |
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allow netd self:netlink_kobject_uevent_socket create_socket_perms_no_ioctl; |
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allow netd self:netlink_route_socket nlmsg_write; |
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allow netd self:netlink_nflog_socket create_socket_perms_no_ioctl; |
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allow netd self:netlink_socket create_socket_perms_no_ioctl; |
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allow netd self:netlink_tcpdiag_socket { create_socket_perms_no_ioctl nlmsg_read nlmsg_write }; |
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allow netd self:netlink_generic_socket create_socket_perms_no_ioctl; |
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allow netd self:netlink_netfilter_socket create_socket_perms_no_ioctl; |
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allow netd shell_exec:file rx_file_perms; |
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allow netd system_file:file x_file_perms; |
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not_full_treble(`allow netd vendor_file:file x_file_perms;') |
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allow netd devpts:chr_file rw_file_perms; |
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# Acquire advisory lock on /system/etc/xtables.lock |
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allow netd system_file:file lock; |
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r_dir_file(netd, proc_net) |
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# For /proc/sys/net/ipv[46]/route/flush. |
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allow netd proc_net:file rw_file_perms; |
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# Enables PppController and interface enumeration (among others) |
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r_dir_file(netd, sysfs_type) |
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# Allows setting interface MTU |
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allow netd sysfs:file write; |
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# TODO: added to match above sysfs rule. Remove me? |
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allow netd sysfs_usb:file write; |
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# TODO: netd previously thought it needed these permissions to do WiFi related |
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# work. However, after all the WiFi stuff is gone, we still need them. |
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# Why? |
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allow netd self:capability { dac_override chown }; |
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# Needed to update /data/misc/net/rt_tables |
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allow netd net_data_file:file create_file_perms; |
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allow netd net_data_file:dir rw_dir_perms; |
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allow netd self:capability fowner; |
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# Allow netd to spawn dnsmasq in it's own domain |
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allow netd dnsmasq:process signal; |
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# Allow netd to start clatd in its own domain |
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allow netd clatd:process signal; |
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set_prop(netd, ctl_mdnsd_prop) |
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# Allow netd to publish a binder service and make binder calls. |
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binder_use(netd) |
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add_service(netd, netd_service) |
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allow netd dumpstate:fifo_file { getattr write }; |
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# Allow netd to call into the system server so it can check permissions. |
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allow netd system_server:binder call; |
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allow netd permission_service:service_manager find; |
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# Allow netd to talk to the framework service which collects netd events. |
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allow netd netd_listener_service:service_manager find; |
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# Allow netd to operate on sockets that are passed to it. |
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allow netd netdomain:{ |
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tcp_socket |
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udp_socket |
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rawip_socket |
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tun_socket |
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} { read write getattr setattr getopt setopt }; |
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allow netd netdomain:fd use; |
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# give netd permission to read and write netlink xfrm |
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allow netd self:netlink_xfrm_socket { create_socket_perms_no_ioctl nlmsg_write nlmsg_read }; |
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### |
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### Neverallow rules |
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### |
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### netd should NEVER do any of this |
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# Block device access. |
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neverallow netd dev_type:blk_file { read write }; |
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# ptrace any other app |
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neverallow netd { domain }:process ptrace; |
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# Write to /system. |
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neverallow netd system_file:dir_file_class_set write; |
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# Write to files in /data/data or system files on /data |
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neverallow netd { app_data_file system_data_file }:dir_file_class_set write; |
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# only system_server, dumpstate and netd may interact with netd over binder |
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neverallow { domain -system_server -dumpstate -netd } netd_service:service_manager find; |
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neverallow { domain -system_server -dumpstate } netd:binder call; |
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neverallow netd { domain -system_server -servicemanager userdebug_or_eng(`-su') }:binder call;
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