PWN-Hunter/android_system_sepolicy
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android_system_sepolicy/public/ppp.te

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Add ppp/mtp policy. Initial policy for Point-to-Point tunneling and tunneling manager services.
2012-08-20 03:13:28 -07:00
# Point to Point Protocol daemon
Create attribute for moving perms out of domain Motivation: Domain is overly permissive. Start removing permissions from domain and assign them to the domain_deprecated attribute. Domain_deprecated and domain can initially be assigned to all domains. The goal is to not assign domain_deprecated to new domains and to start removing domain_deprecated where it is not required or reassigning the appropriate permissions to the inheriting domain when necessary. Bug: 25433265 Change-Id: I8b11cb137df7bdd382629c98d916a73fe276413c
2015-11-03 09:54:39 -08:00
type ppp, domain, domain_deprecated;
Add ppp/mtp policy. Initial policy for Point-to-Point tunneling and tunneling manager services.
2012-08-20 03:13:28 -07:00
type ppp_device, dev_type;
type ppp_exec, exec_type, file_type;
Make ppp permissive or unconfined. Also add rules from our policy. Change-Id: I6f552538cc4f6b28b2883aa74832230944cbdb7a Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
2013-10-29 11:42:38 -07:00
Clean up socket rules. Replace * or any permission set containing create with create_socket_perms or create_stream_socket_perms. Add net_domain() to all domains using network sockets and delete rules already covered by domain.te or net.te. For netlink_route_socket, only nlmsg_write needs to be separately granted to specific domains that are permitted to modify the routing table. Clarification: read/write permissions are just ability to perform read/recv() or write/send() on the socket, whereas nlmsg_read/ nlmsg_write permissions control ability to observe or modify the underlying kernel state accessed via the socket. See security/selinux/nlmsgtab.c in the kernel for the mapping of netlink message types to nlmsg_read or nlmsg_write. Delete legacy rule for b/12061011. This change does not touch any rules where only read/write were allowed to a socket created by another domain (inherited across exec or received across socket or binder IPC). We may wish to rewrite some or all of those rules with the rw_socket_perms macro but that is a separate change. Change-Id: Ib0637ab86f6d388043eff928e5d96beb02e5450e Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
2014-02-24 12:06:11 -08:00
net_domain(ppp)
domain_deprecated.te: remove /proc/net access Remove /proc/net access to domain_deprecated. Add it to domains where it was missing before. Other than these domains, SELinux denial monitoring hasn't picked up any denials related to /proc/net Bug: 28760354 Test: Device boots Test: No unexpected denials in denial collection logs. Change-Id: Ie5bfa4bc0070793c1e8bf3b00676fd31c08d426a
2016-11-30 15:22:18 -08:00
r_dir_file(ppp, proc_net)
Enforce ioctl command whitelisting on all sockets Remove the ioctl permission for most socket types. For others, such as tcp/udp/rawip/unix_dgram/unix_stream set a default unprivileged whitelist that individual domains may extend (except where neverallowed like untrusted_app). Enforce via a neverallowxperm rule. Change-Id: I15548d830f8eff1fd4d64005c5769ca2be8d4ffe
2016-05-16 21:12:17 -07:00
allow ppp mtp:socket rw_socket_perms_no_ioctl;
Allow ppp to inherit/use mtp unix datagram socket. Resolves denials such as: avc: denied { read write } for path="socket:[33571]" dev="sockfs" ino=33571 scontext=u:r:ppp:s0 tcontext=u:r:mtp:s0 tclass=unix_dgram_socket Change-Id: Icb1ee00d8513179039bfb738647f49480e836f25 Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
2014-05-13 05:24:38 -07:00
allow ppp mtp:unix_dgram_socket rw_socket_perms;
Make ppp permissive or unconfined. Also add rules from our policy. Change-Id: I6f552538cc4f6b28b2883aa74832230944cbdb7a Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
2013-10-29 11:42:38 -07:00
allow ppp ppp_device:chr_file rw_file_perms;
allow ppp self:capability net_admin;
allow ppp system_file:file rx_file_perms;
allow ppp vpn_data_file:dir w_dir_perms;
allow ppp vpn_data_file:file create_file_perms;
allow ppp mtp:fd use;
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