6598175e06
Require all domains which can be used for BPF to be marked as bpfdomain, and add a restriction for these domains to not be able to use net_raw or net_admin. We want to make sure the network stack has exclusive access to certain BPF attach points. Bug: 140330870 Bug: 162057235 Test: build (compile-time neverallows) Change-Id: I29100e48a757fdcf600931d5eb42988101275325
46 lines
1.8 KiB
Text
46 lines
1.8 KiB
Text
typeattribute netutils_wrapper coredomain;
|
|
typeattribute netutils_wrapper bpfdomain;
|
|
|
|
r_dir_file(netutils_wrapper, system_file);
|
|
|
|
# For netutils (ip, iptables, tc)
|
|
allow netutils_wrapper self:global_capability_class_set net_raw;
|
|
|
|
allow netutils_wrapper system_file:file { execute execute_no_trans };
|
|
allow netutils_wrapper proc_net_type:file { open read getattr };
|
|
allow netutils_wrapper self:rawip_socket create_socket_perms;
|
|
allow netutils_wrapper self:udp_socket create_socket_perms;
|
|
allow netutils_wrapper self:global_capability_class_set net_admin;
|
|
# ip utils need everything but ioctl
|
|
allow netutils_wrapper self:netlink_route_socket ~ioctl;
|
|
allow netutils_wrapper self:netlink_xfrm_socket ~ioctl;
|
|
|
|
# For netutils (ndc) to be able to talk to netd
|
|
allow netutils_wrapper netd_service:service_manager find;
|
|
allow netutils_wrapper dnsresolver_service:service_manager find;
|
|
allow netutils_wrapper mdns_service:service_manager find;
|
|
binder_use(netutils_wrapper);
|
|
binder_call(netutils_wrapper, netd);
|
|
|
|
# For vendor code that update the iptables rules at runtime. They need to reload
|
|
# the whole chain including the xt_bpf rules. They need to access to the pinned
|
|
# program when reloading the rule.
|
|
allow netutils_wrapper fs_bpf:dir search;
|
|
allow netutils_wrapper fs_bpf:file { read write };
|
|
allow netutils_wrapper bpfloader:bpf prog_run;
|
|
|
|
# For /data/misc/net access to ndc and ip
|
|
r_dir_file(netutils_wrapper, net_data_file)
|
|
|
|
domain_auto_trans({
|
|
domain
|
|
-coredomain
|
|
-appdomain
|
|
}, netutils_wrapper_exec, netutils_wrapper)
|
|
|
|
# suppress spurious denials
|
|
dontaudit netutils_wrapper self:global_capability_class_set sys_resource;
|
|
dontaudit netutils_wrapper sysfs_type:file read;
|
|
|
|
# netutils wrapper may only use the following capabilities.
|
|
neverallow netutils_wrapper self:global_capability_class_set ~{ net_admin net_raw };
|