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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>
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Change-Id: I5db2b0897aa43ccefad51b1b7fcfd0d643249384
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
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Change-Id: Id69b1fe80746429a550448b9168ac7e86c38aa9f
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
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This change removes the permissive line from unconfined
domains. Unconfined domains can do (mostly) anything, so moving
these domains into enforcing should be a no-op.
The following domains were deliberately NOT changed:
1) kernel
2) init
In the future, this gives us the ability to tighten up the
rules in unconfined, and have those tightened rules actually
work.
When we're ready to tighten up the rules for these domains,
we can:
1) Remove unconfined_domain and re-add the permissive line.
2) Submit the domain in permissive but NOT unconfined.
3) Remove the permissive line
4) Wait a few days and submit the no-permissive change.
For instance, if we were ready to do this for adb, we'd identify
a list of possible rules which allow adbd to work, re-add
the permissive line, and then upload those changes to AOSP.
After sufficient testing, we'd then move adb to enforcing.
We'd repeat this for each domain until everything is enforcing
and out of unconfined.
Change-Id: If674190de3262969322fb2e93d9a0e734f8b9245
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Bug: 8424461
Change-Id: I8f0b01cdb19b4a479d5de842f4e4844aeab00622
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This prevents denials from being generated by the base policy.
Over time, these rules will be incrementally tightened to improve
security.
Change-Id: I4be1c987a5d69ac784a56d42fc2c9063c402de11
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Bug: 4070557
Change-Id: I027f76cff6df90e9909711cb81fbd17db95233c1
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Add new dev_type:
- ump_device : Unified Memory Provider driver.
The file_contexts entry should be
described on a per device basis.
Minor adjustments:
- tee needs netlink socket access.
- ueventd needs to grant file operations.
Change-Id: I915304da687d3a2b9aa417e6f91ea915bd697676
Signed-off-by: rpcraig <rpcraig@tycho.ncsc.mil>
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