You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
179 lines
6.3 KiB
179 lines
6.3 KiB
# network manager
|
|
type netd, domain, mlstrustedsubject;
|
|
type netd_exec, system_file_type, exec_type, file_type;
|
|
|
|
net_domain(netd)
|
|
# in addition to ioctls allowlisted for all domains, grant netd priv_sock_ioctls.
|
|
allowxperm netd self:udp_socket ioctl priv_sock_ioctls;
|
|
|
|
r_dir_file(netd, cgroup)
|
|
|
|
allow netd system_server:fd use;
|
|
|
|
allow netd self:global_capability_class_set { net_admin net_raw kill };
|
|
# Note: fsetid is deliberately not included above. fsetid checks are
|
|
# triggered by chmod on a directory or file owned by a group other
|
|
# than one of the groups assigned to the current process to see if
|
|
# the setgid bit should be cleared, regardless of whether the setgid
|
|
# bit was even set. We do not appear to truly need this capability
|
|
# for netd to operate.
|
|
dontaudit netd self:global_capability_class_set fsetid;
|
|
|
|
# Allow netd to open /dev/tun, set it up and pass it to clatd
|
|
allow netd tun_device:chr_file rw_file_perms;
|
|
allowxperm netd tun_device:chr_file ioctl { TUNGETIFF TUNSETIFF };
|
|
allow netd self:tun_socket create;
|
|
|
|
allow netd self:netlink_kobject_uevent_socket create_socket_perms_no_ioctl;
|
|
allow netd self:netlink_route_socket nlmsg_write;
|
|
allow netd self:netlink_nflog_socket create_socket_perms_no_ioctl;
|
|
allow netd self:netlink_socket create_socket_perms_no_ioctl;
|
|
allow netd self:netlink_tcpdiag_socket { create_socket_perms_no_ioctl nlmsg_read nlmsg_write };
|
|
allow netd self:netlink_generic_socket create_socket_perms_no_ioctl;
|
|
allow netd self:netlink_netfilter_socket create_socket_perms_no_ioctl;
|
|
allow netd shell_exec:file rx_file_perms;
|
|
allow netd system_file:file x_file_perms;
|
|
not_full_treble(`allow netd vendor_file:file x_file_perms;')
|
|
allow netd devpts:chr_file rw_file_perms;
|
|
|
|
# Acquire advisory lock on /system/etc/xtables.lock
|
|
allow netd system_file:file lock;
|
|
|
|
# Allow netd to write to qtaguid ctrl file.
|
|
# TODO: Add proper rules to prevent other process to access qtaguid_proc file
|
|
# after migration complete
|
|
allow netd proc_qtaguid_ctrl:file rw_file_perms;
|
|
# Allow netd to read /dev/qtaguid. This is the same privilege level that normal apps have.
|
|
allow netd qtaguid_device:chr_file r_file_perms;
|
|
|
|
r_dir_file(netd, proc_net_type)
|
|
# For /proc/sys/net/ipv[46]/route/flush.
|
|
allow netd proc_net_type:file rw_file_perms;
|
|
|
|
# Enables PppController and interface enumeration (among others)
|
|
allow netd sysfs:dir r_dir_perms;
|
|
r_dir_file(netd, sysfs_net)
|
|
|
|
# Allows setting interface MTU
|
|
allow netd sysfs_net:file w_file_perms;
|
|
|
|
# TODO: added to match above sysfs rule. Remove me?
|
|
allow netd sysfs_usb:file write;
|
|
|
|
r_dir_file(netd, cgroup_bpf)
|
|
|
|
allow netd fs_bpf:dir search;
|
|
allow netd fs_bpf:file { read write setattr };
|
|
|
|
# TODO: netd previously thought it needed these permissions to do WiFi related
|
|
# work. However, after all the WiFi stuff is gone, we still need them.
|
|
# Why?
|
|
allow netd self:global_capability_class_set { dac_override dac_read_search chown };
|
|
|
|
# Needed to update /data/misc/net/rt_tables
|
|
allow netd net_data_file:file create_file_perms;
|
|
allow netd net_data_file:dir rw_dir_perms;
|
|
allow netd self:global_capability_class_set fowner;
|
|
|
|
# Needed to lock the iptables lock.
|
|
allow netd system_file:file lock;
|
|
|
|
# Allow netd to spawn dnsmasq in it's own domain
|
|
allow netd dnsmasq:process signal;
|
|
|
|
# Allow netd to start clatd in its own domain
|
|
allow netd clatd:process signal;
|
|
|
|
set_prop(netd, ctl_mdnsd_prop)
|
|
set_prop(netd, netd_stable_secret_prop)
|
|
|
|
# Allow netd to publish a binder service and make binder calls.
|
|
binder_use(netd)
|
|
add_service(netd, netd_service)
|
|
add_service(netd, dnsresolver_service)
|
|
allow netd dumpstate:fifo_file { getattr write };
|
|
|
|
# Allow netd to call into the system server so it can check permissions.
|
|
allow netd system_server:binder call;
|
|
allow netd permission_service:service_manager find;
|
|
|
|
# Allow netd to talk to the framework service which collects netd events.
|
|
allow netd netd_listener_service:service_manager find;
|
|
|
|
# Allow netd to operate on sockets that are passed to it.
|
|
allow netd netdomain:{
|
|
icmp_socket
|
|
tcp_socket
|
|
udp_socket
|
|
rawip_socket
|
|
tun_socket
|
|
} { read write getattr setattr getopt setopt };
|
|
allow netd netdomain:fd use;
|
|
|
|
# give netd permission to read and write netlink xfrm
|
|
allow netd self:netlink_xfrm_socket { create_socket_perms_no_ioctl nlmsg_write nlmsg_read };
|
|
|
|
# Allow netd to register as hal server.
|
|
add_hwservice(netd, system_net_netd_hwservice)
|
|
hwbinder_use(netd)
|
|
get_prop(netd, hwservicemanager_prop)
|
|
get_prop(netd, device_config_netd_native_prop)
|
|
|
|
###
|
|
### Neverallow rules
|
|
###
|
|
### netd should NEVER do any of this
|
|
|
|
# Block device access.
|
|
neverallow netd dev_type:blk_file { read write };
|
|
|
|
# ptrace any other app
|
|
neverallow netd { domain }:process ptrace;
|
|
|
|
# Write to /system.
|
|
neverallow netd system_file:dir_file_class_set write;
|
|
|
|
# Write to files in /data/data or system files on /data
|
|
neverallow netd { app_data_file privapp_data_file system_data_file }:dir_file_class_set write;
|
|
|
|
# only system_server, dumpstate and network stack app may find netd service
|
|
neverallow {
|
|
domain
|
|
-system_server
|
|
-dumpstate
|
|
-network_stack
|
|
-netd
|
|
-netutils_wrapper
|
|
} netd_service:service_manager find;
|
|
|
|
# only system_server, dumpstate and network stack app may find dnsresolver service
|
|
neverallow {
|
|
domain
|
|
-system_server
|
|
-dumpstate
|
|
-network_stack
|
|
-netd
|
|
-netutils_wrapper
|
|
} dnsresolver_service:service_manager find;
|
|
|
|
# apps may not interact with netd over binder.
|
|
neverallow { appdomain -network_stack } netd:binder call;
|
|
neverallow netd { appdomain -network_stack userdebug_or_eng(`-su') }:binder call;
|
|
|
|
# persist.netd.stable_secret contains RFC 7217 secret key which should never be
|
|
# leaked to other processes. Make sure it never leaks.
|
|
neverallow { domain -netd -init -dumpstate } netd_stable_secret_prop:file r_file_perms;
|
|
|
|
# We want to ensure that no other process ever tries tampering with persist.netd.stable_secret,
|
|
# the RFC 7217 secret key managed by netd. Doing so could compromise user privacy.
|
|
neverallow { domain -netd -init } netd_stable_secret_prop:property_service set;
|
|
|
|
# If an already existing file is opened with O_CREATE, the kernel might generate
|
|
# a false report of a create denial. Silence these denials and make sure that
|
|
# inappropriate permissions are not granted.
|
|
neverallow netd proc_net:dir no_w_dir_perms;
|
|
dontaudit netd proc_net:dir write;
|
|
|
|
neverallow netd sysfs_net:dir no_w_dir_perms;
|
|
dontaudit netd sysfs_net:dir write;
|