Commit graph

61 commits

Author SHA1 Message Date
Hung-ying Tyan
565384db61 Sepolicy: add dynamic_system_prop
and allow shell and system_app (Settings) to set it to enable Dynamic System Update.
Also allow priv_app (user of the API) to read it.

Bug: 119647479
Bug: 129060539
Test: run the following command on crosshatch-user:
      adb shell setprop persist.sys.fflag.override.settings_dynamic_system 1

Change-Id: I24a5382649c64d36fd05a59bc87faca87e6f0eb8
Merged-In: I24a5382649c64d36fd05a59bc87faca87e6f0eb8
2019-04-30 18:29:56 +08:00
Tri Vo
131fa73add Restrict access to suspend control
Test: m selinux_policy
Change-Id: Ieccfd2aa059da065ace4f2db1b9634c52dd2cb24
2019-03-07 18:31:58 +00:00
Luke Huang
524f25ebb0 Add sepolicy for resolver service
Bug: 126141549
Test: built, flashed, booted
Change-Id: I34260e1e5cc238fbe92574f928252680c1e6b417
2019-03-05 15:49:33 +00:00
David Anderson
64bbf05150 Allow system_server and shell to start gsid on-demand.
gsid is started lazily to reduce memory pressure. It can be started
either via gsi_tool (invoked by adb shell), or by DynamicAndroidService
via system_server.

Bug: 126622385
Test: no denials running "gsi_tool status"
Change-Id: I90a5f3f28fe4f294fb60e7c87a62e76716fbd5c0
2019-02-28 07:54:25 -08:00
Nick Kralevich
28e4b83ec7 Allow shell /proc/loadavg access
Needed for the bionic stdlib.getloadavg test.

Access to /proc/loadavg was inadvertantly removed when a new label was
assigned to that file in system/sepolicy commit
8c2323d3f9.

Addresses the following denial:

  CtsBionicTestCa: type=1400 audit(0.0:188192): avc: denied { read } for name="loadavg" dev="proc" ino=4026531959 scontext=u:r:shell:s0 tcontext=u:object_r:proc_loadavg:s0 tclass=file permissive=0

Bug: 124024827
Test: compiles
Change-Id: Iadb5c98cb96f69ddc9418a64720370adae1bb51f
2019-02-20 13:56:52 -08:00
Jeff Vander Stoep
3b9fad192a Remove unused *_tmpfs types
Apps now all share the appdomain_tmpfs type.

Bug: 122854450
Test: boot Blueline with memfd enabled.
Change-Id: I5eac0adc7ecd10d19aa1bdf5f72efc7ed2a3a548
2019-01-30 21:54:40 +00:00
Jeff Vander Stoep
41a2abfc0d Properly Treble-ize tmpfs access
This is being done in preparation for the migration from ashmem to
memfd. In order for tmpfs objects to be usable across the Treble
boundary, they need to be declared in public policy whereas, they're
currently all declared in private policy as part of the
tmpfs_domain() macro. Remove the type declaration from the
macro, and remove tmpfs_domain() from the init_daemon_domain() macro
to avoid having to declare the *_tmpfs types for all init launched
domains. tmpfs is mostly used by apps and the media frameworks.

Bug: 122854450
Test: Boot Taimen and blueline. Watch videos, make phone calls, browse
internet, send text, install angry birds...play angry birds, keep
playing angry birds...

Change-Id: I20a47d2bb22e61b16187015c7bc7ca10accf6358
Merged-In: I20a47d2bb22e61b16187015c7bc7ca10accf6358
(cherry picked from commit e16fb9109c)
2019-01-26 17:30:41 +00:00
Florian Mayer
c32ca90181 Add persist.heapprofd.enable property.
This is analoguous to what Perfetto does with persist.traced.enable.

Test: m
Test: flash walleye
Test: setprop persist.heapprofd.enable 1
      setprop persist.heapprofd.enable 0

Change-Id: I997272ef8c6fe078aca2388ed0cf2ecc3de612a5
2018-12-12 10:26:33 +00:00
Tri Vo
c7f56cdc83 Remove kmem_device selinux type.
kmem_device was used to label /dev/mem and /dev/kmem. We already have
multiple layers of protection against those /dev nodes being present on
devices.

CTS checks that /dev/mem and /dev/kmem don't exist:
https://android.googlesource.com/platform/cts/+/master/tests/tests/permission/src/android/permission/cts/FileSystemPermissionTest.java#233

VTS enforces our base kernel configs, which have CONFIG_DEVKMEM and
CONFIG_DEVMEM disabled:
https://android.googlesource.com/kernel/configs/+/master/android-4.9/android-base.config#2

Bug: 110962171
Test: m selinux_policy
Change-Id: I246740684218dee0cddf81dabf84d4763a753cde
2018-11-15 21:31:56 +00:00
Igor Murashkin
72a88b194c iorapd: Add new binder service iorapd.
This daemon is very locked down. Only system_server can access it.

Bug: 72170747
Change-Id: I7b72b9191cb192be96001d84d067c28292c9688f
2018-10-08 15:00:34 -07:00
Martijn Coenen
ac097ac4c7 Add policy for apexd.
apexd is a new daemon for managing APEX packages installed
on the device. It hosts a single binder service, "apexservice".

Bug: 112455435
Test: builds, binder service can be registered,
      apexes can be accessed, verified and mounted
Change-Id: I634ad100f10b2edcd9a9c0df0d33896fa5d4ed97
2018-10-04 07:06:45 +00:00
Chenbo Feng
16dbe82eaf Block access to xt_qtaguid proc files
In the next Android release, there will be devices that have no
xt_qtaguid module at all and framework and netd will decide which code
path it takes for trafficStats depending on the device setup. So all
apps and services should not depend on this device specific
implementation anymore and use public API for the data they need.

Bug: 114475331
Bug: 79938294
Test: QtaguidPermissionTest

Change-Id: I0d37b2df23782eefa2e8977c6cdbf9210db3e0d2
2018-09-28 01:33:02 +00:00
Nick Kralevich
5e37271df8 Introduce system_file_type
system_file_type is a new attribute used to identify files which exist
on the /system partition. It's useful for allow rules in init, which are
based off of a blacklist of writable files. Additionally, it's useful
for constructing neverallow rules to prevent regressions.

Additionally, add commented out tests which enforce that all files on
the /system partition have the system_file_type attribute. These tests
will be uncommented in a future change after all the device-specific
policies are cleaned up.

Test: Device boots and no obvious problems.
Change-Id: Id9bae6625f042594c8eba74ca712abb09702c1e5
2018-09-27 12:52:09 -07:00
Nick Kralevich
51156264b4 shell: remove /dev/input write access
Shell access to existing input devices is an abuse vector.
The shell user can inject events that look like they originate
from the touchscreen etc.

Everyone should have already moved to UiAutomation#injectInputEvent
if they are running instrumentation tests (i.e. CTS), Monkey for
their stress tests, and the input command (adb shell input ...) for
injecting swipes and things.

Remove the write ability for shell users, and add a neverallow assertion
(which is also a CTS test) to prevent regressions.

Bug: 30861057
Test: auditallow statement added in
  f617a404c2 hasn't triggered.
Test: ran getevent, saw correct output, played with device

Change-Id: Ia78eeec05f6015478dd32bd59505b51fef200a99
2018-08-28 09:19:51 -07:00
Nick Kralevich
f617a404c2 auditallow shell input_device:chr_file
Test to see if anyone is writing to /dev/input from the shell.

Bug: 30861057
Test: device boots and no avc granted messages.
Change-Id: Ia3499ef9436f83cf13c633525348b63edd95990f
2018-08-24 12:40:30 -07:00
Mark Salyzyn
9b398f3fb7 fs_mgr: add overlayfs handling for squashfs system filesystems
/cache/overlay directory in support of overlayfs mounts on userdebug
and eng devices.  Overlayfs in turn can be capable of supporting
adb remount for read-only or restricted-storage filesystems like
squashfs or right-sized (zero free space) system partitions
respectively.

Test: compile
Bug: 109821005
Bug: 110985612
Change-Id: I3ece03886db7cc97f864497cf93ec6c6c39bccd1
2018-08-08 07:33:10 -07:00
Mark Salyzyn
d6eaed854d access to /proc/slabinfo
init, dumpstate and shell

Test: check avc for init is now gone
Bug: 7232205
Bug: 109821005
Change-Id: I299a0ba29bcc97a97047f12a5c48f6056f5e6de5
2018-06-14 10:18:45 -07:00
Jiyong Park
bacf36480d adbd is allowed to execute shell in recovery mode
The shell is now available directly in the recovery ramdisk. We no
longer need to mount system.img to /system as the recovery ramdisk is
self-contained. However, there is a problem that every file in the
ramdisk is labeled as rootfs because the ramdisk does not support xattr.

This CL adds several recovery-only rules that are required to make the
recovery ramdisk self-contained. Most importantly, adbd is allowed to
domain_trans to shell. Also shell is allowe to execute files of type
rootfs. Finally, the recovery is allowed to mount on tmpfs since it now
mounts system.img to /mnt/system.

Bug: 63673171
Test: `adb reboot recovery; adb devices` shows the device ID
Test: `adb root && adb shell` and then
$ lsof -p `pidof adbd` shows that libm.so, libc.so, etc. are loaded from
the /lib directory.

Change-Id: If21b069aee63541344a5ca8939fb9a46ffef4d3e
2018-06-09 02:23:10 +09:00
Calin Juravle
6ff0f490db Allow system server to write profile snapshots in /data/misc/profman
The goal is to allow creating profile snapshots from the shell command in
order to be able to write CTS tests.

The system server will dump profiles for debuggable in /data/misc/profman
from where they will be pulled and verified by CTS tests.

Test: adb shell cmd package snapshot-profile com.android.vending
Bug: 74081010

(cherry picked from commit 687d5e46ce)

Merged-In: I54690305284b92c0e759538303cb98c93ce92dd5
Change-Id: I54690305284b92c0e759538303cb98c93ce92dd5
2018-05-09 14:42:59 -07:00
Jeff Vander Stoep
7a4af30b38 Start the process of locking down proc/net
Files in /proc/net leak information. This change is the first step in
determining which files apps may use, whitelisting benign access, and
otherwise removing access while providing safe alternative APIs.

To that end, this change:
* Introduces the proc_net_type attribute which will assigned to any
new SELinux types in /proc/net to avoid removing access to privileged
processes. These processes may be evaluated later, but are lower
priority than apps.
* Labels /proc/net/{tcp,tcp6,udp,udp6} as proc_net_vpn due to existing
use by VPN apps. This may be replaced by an alternative API.
* Audits all other proc/net access for apps.
* Audits proc/net access for other processes which are currently
granted broad read access to /proc/net but should not be including
storaged, zygote, clatd, logd, preopt2cachename and vold.

Bug: 9496886
Bug: 68016944
Test: Boot Taimen-userdebug. On both wifi and cellular: stream youtube
    navigate maps, send text message, make voice call, make video call.
    Verify no avc "granted" messages in the logs.
Test: A few VPN apps including "VPN Monster", "Turbo VPN", and
"Freighter". Verify no logspam with the current setup.
Test: atest CtsNativeNetTestCases
Test: atest netd_integration_test
Test: atest QtaguidPermissionTest
Test: atest FileSystemPermissionTest

Change-Id: I7e49f796a25cf68bc698c6c9206e24af3ae11457
Merged-In: I7e49f796a25cf68bc698c6c9206e24af3ae11457
(cherry picked from commit 087318957f)
2018-05-04 21:36:33 +00:00
Lalit Maganti
673b4db777 sepolicy: allow shell to read/write traced prop
This is to fix the CTS failures given by the bugs below where devices
where traced is not enabled by default causes test failures.

Bug: 78215159
Bug: 78347829
Change-Id: Ib0f6a1cdb770528dbbeb857368534ff5040e464e
2018-04-23 09:55:04 +00:00
Max Bires
5cac1aa99c Adding labeling for vendor security patch prop
This will allow adb shell getprop ro.vendor.build.security_patch to
properly return the correct build property, whereas previously it was
offlimits due to lack of label.

Test: adb shell getprop ro.vendor.build.security_patch successfully
returns whatever VENDOR_SECURITY_PATCH is defined to be in the Android
.mk files

Change-Id: Ie8427738125fc7f909ad8d51e4b76558f5544d49
2018-04-09 15:34:42 -07:00
Jeff Vander Stoep
9d28625fc4 shell: move shell qtaguid perms to shell.te
Remove unecessary access to /proc/net/xt_qtaguid/ctrl and
/dev/xt_qtaguid.

Bug: 68774956
Test: atest CtsNativeNetTestCases
Test: adb root; atest tagSocket
Change-Id: If3a1e823be0e342faefff28ecd878189c68a8e92
2018-04-04 20:26:18 +00:00
Tri Vo
bfe51254ee shell: remove from system_executes_vendor_violators.
And grant explicit exemption from system_executes_vendor_violators
neverallow rules.

This does not change the policy, but is needed to test the violator
attribute for emptiness.

Bug: 72662597
Test: build sepolicy
Change-Id: Iba79bb42e1381b221fe0dc53470f62f8267a4791
2018-02-07 17:48:28 +00:00
Max Bires
35c363897d Adding write permissions to traceur
Fixing denials that stopped traceur from being able to write to
debugfs_tracing. Also cleaning up general find denials for services that
traceur doesn't have permission to access.

Additionally, labeling /data/local/trace as a trace_data_file in order
to give traceur a UX friendly area to write its traces to now that it
will no longer be a shell user. It will be write/readable by traceur,
and deletable/readable by shell.

Test: Traceur functionality is not being blocked by selinux policy
Bug: 68126425
Change-Id: I201c82975a31094102e90bc81454d3c2a48fae36
2018-01-22 21:06:36 +00:00
Tri Vo
30a3157003 Mark shell as system_executes_vendor_violators.
Bug: 62041836
Test: sailfish sepolicy builds

Change-Id: Iad865fea852ab134dd848688e8870bc71f99788d
2018-01-17 09:39:22 -08:00
Yifan Hong
00ab5d86be Allow shell to start vendor shell
Test: adb shell /vendor/bin/sh
Fixes: 65448858
Change-Id: Ic2c9fa9b7e5bed3e1532f4e545f54a857ea99fc6
2018-01-16 18:28:51 +00:00
Jaekyun Seok
e49714542e Whitelist exported platform properties
This CL lists all the exported platform properties in
private/exported_property_contexts.

Additionally accessing core_property_type from vendor components is
restricted.
Instead public_readable_property_type is used to allow vendor components
to read exported platform properties, and accessibility from
vendor_init is also specified explicitly.

Note that whitelisting would be applied only if
PRODUCT_COMPATIBLE_PROPERTY is set on.

Bug: 38146102
Test: tested on walleye with PRODUCT_COMPATIBLE_PROPERTY=true
Change-Id: I304ba428cc4ca82668fec2ddeb17c971e7ec065e
2018-01-10 16:15:25 +00:00
Tri Vo
f34e592984 shell: directory access to sysfs_net
This will allow bionic cts test to list network interfaces in
/sys/class/net.

Bug: 70537905
Test: adb shell /data/nativetest/bionic-unit-tests/bionic-unit-tests
--gtest_filter=ifaddrs.getifaddrs_interfaces
Change-Id: Ie07425fc54f9101e911962142824697e64d2bc45
2017-12-12 09:41:13 -08:00
Tri Vo
4081fd3993 Label /proc/sys/kernel/pid_max as proc_pid_max.
And give shell domain read access to /proc/sys/kernel/pic_max.

Bug: 69569397
Test: adb shell /data/nativetest/bionic-unit-tests/bionic-unit-tests
--gtest_filter=pthread.pthread_mutex_owner_tid_limit
Change-Id: Ib56c18ed553ad2c2113e6913788a4c00965483cc
2017-11-28 08:42:46 -08:00
Tri Vo
c4ef363006 shell: neverallow access to 'proc' label.
Added access to proc_uptime and proc_asound to address these denials:

avc: denied { read } for name="uptime" dev="proc" ino=4026532080
scontext=u:r:shell:s0 tcontext=u:object_r:proc_uptime:s0 tclass=file
permissive=1

avc: denied { getattr } for path="/proc/asound/version" dev="proc"
ino=4026532017 scontext=u:r:shell:s0 tcontext=u:object_r:proc_asound:s0
tclass=file permissive=1

Bug: 65643247
Test: device boots with no denial from 'shell' domain.
Test: lsmod, ps, top, netstat
Test: No denials triggered from CtsSecurityHostTestCases
Test: external/toybox/run-tests-on-android.sh does not pass, but triggers
no denials from 'shell' domain to 'proc' type.

Change-Id: Ia4c26fd616e33e5962c6707a855dc24e338ec153
2017-11-17 18:39:07 +00:00
Tri Vo
4b829da526 shell: grant access to /proc/version
Addresses this denial during CtsBionicTestCases:
avc: denied { getattr } for path="/proc/version" dev="proc"
ino=4026532359 scontext=u:r:shell:s0 tcontext=u:object_r:proc_version:s0
tclass=file permissive=0

Bug: 68067856
Test: cts-tradefed run commandAndExit cts -m CtsBionicTestCases
--skip-all-system-status-check --primary-abi-only --skip-preconditions
No more denials to /proc/version
Change-Id: I7e927fbaf1a8ce3637e09452cbd50f475176838e
2017-10-23 11:33:43 -07:00
Jeff Vander Stoep
f5ea6145e7 Shell: grant permission to run lsmod
lsmod needs access to /proc/modules

Test: build, run lsmod
Change-Id: Icb6ea6ce791cc6a22c89aa8e90c44749497c8468
2017-10-20 12:38:17 -07:00
Jeff Vander Stoep
a80416e380 shell: grant access to read /proc/filesystems
Addresses the following test failure:
system/extras/tests/kernel.config/nfs_test.cpp:24: Failure
Value of: android::base::ReadFileToString("/proc/filesystems", &fs)
Actual: false
Expected: true

Denial:
avc: denied { read } for name="filesystems" dev="proc"
scontext=u:r:shell:s0 tcontext=u:object_r:proc_filesystems:s0
tclass=file

Bug: 67862327
Test: build
Change-Id: I9ada5404987cb474968afc8cb8d96137ee36c68d
2017-10-17 14:37:56 -07:00
Jeff Vander Stoep
b4c639730b shell: allow reading battery info dirs in /sys
Addresses:
avc: denied { search } for comm="sh" name="bms" dev="sysfs" ino=47908
scontext=u:r:shell:s0 tcontext=u:object_r:sysfs_batteryinfo:s0
tclass=dir

Test: build
Change-Id: I8a0197417c47feefba084e9c75933d28c5f6e5f1
2017-10-13 10:26:44 -07:00
Dan Cashman
91d398d802 Sync internal master and AOSP sepolicy.
Bug: 37916906
Test: Builds 'n' boots.
Change-Id: Ia1d86264446ebecc1ca79f32f11354921bc77668
Merged-In: I208ec6a864127a059fb389417a9c6b259d7474cb
2017-09-26 14:38:47 -07:00
Mark Salyzyn
006c2e9934 Switch /data/misc/reboot/last_reboot_reason to persistent property
Switch from /data/misc/reboot/last_reboot_reason to persistent
Android property persist.sys.boot.reason for indicating why the
device is rebooted or shutdown.

Introduce protection for all boot reason properties

Protect the following properties with these labels

ro.boot.bootreason      u:object_r:bootloader_boot_reason_prop:s0
sys.boot.reason         u:object_r:sys_boot_reason_prop:s0
persist.sys.boot.reason u:object_r:last_boot_reason_prop:s0

Setup the current as-need access rules for each.

ToDo: Remove u:object_r:reboot_data_file after internal fixes.

Test: system/core/bootstat/boot_reason_test.sh
Bug: 64687998
Change-Id: I3771c73933e8ae2d94aee936c7a38b6282611b80
2017-08-24 15:19:30 -07:00
Pavel Grafov
6357101acc Merge "Let shell and bugreport read logging related properties." into oc-dev
am: 97903c0567

Change-Id: Ida88d74292875a7f218e84d623d17b6e1286278d
2017-04-21 18:20:36 +00:00
Pavel Grafov
a283ac713c Let shell and bugreport read logging related properties.
Currently ro.device_owner and persist.logd.security aren't accessible
without root, so "adb shell getprop" returns empty reply which is
confusing. Also these properties aren't seen from bugreport unless
their change happened recently.

Bug: 37053313
Test: manual, took bugreport and ran getprop after "adb unroot".
Change-Id: Id41cdabc282f2ebcdfc0ac7fe9df756322a0863d
2017-04-21 16:24:45 +01:00
Neil Fuller
4e941ebbb0 Allow the shell user to run tzdatacheck am: 5684f61fe2 am: 072f386528
am: 162319d0c0

Change-Id: Ifc803d7d645be1ec7bd1d34f05e821a522f797e2
2017-04-20 11:16:47 +00:00
Neil Fuller
5684f61fe2 Allow the shell user to run tzdatacheck
Allow the shell user to run tzdatacheck, which is required
to enable a new host side test.

This change also adds some additional checks to
tzdatacheck.te to ensure that OEMs opening up permissions
further don't accidentally create a security hole.

Bug: 31008728
Test: Ran CTS
Change-Id: I6ebfb467526b6b2ea08f891420eea24c81ed1e36
2017-04-20 09:31:36 +00:00
Martijn Coenen
3ea47b9249 Add hwservice_contexts and support for querying it.
hwservicemanager can check hwservice_contexts files
both from the framework and vendor partitions.

Initially, have a wildcard '*' in hwservice_contexts
that maps to a label that can be added/found from
domain. This needs to be removed when the proper policy
is in place.

Also, grant su/shell access to hwservicemanager list
operations, so tools like 'lshal' continue to work.

Bug: 34454312
Test: Marlin boots
Change-Id: I3a02d97a82458692b528d85c1b8e78b6f82ea1bc
2017-04-12 18:07:12 -07:00
Steven Moreland
f20c6ee7ab Remove hal_binderization_prop
Test: works on internal marlin
Bug: 34274385
Change-Id: Idd35e5cdccb595b4e5994eb1d78fdeece0aec0a6
2017-04-04 10:24:36 -07:00
Steven Moreland
d40474ec55 Remove hal_binderization_prop
Test: works on internal marlin
Bug: 34274385
Change-Id: Idd35e5cdccb595b4e5994eb1d78fdeece0aec0a6
2017-04-04 09:46:45 -07:00
Jeff Vander Stoep
892d1e40ce adbd/shell: grant access to sepolicy for cts
Test: Test: make cts && \
      cts-tradefed run singleCommand cts --skip-device-info \
      --skip-preconditions --skip-connectivity-check --abi arm64-v8a \
      --module CtsSecurityHostTestCases \
      -t android.security.cts.SELinuxHostTest#testNoExemptionsForBinderInVendorBan
      Fails as expected.
Bug: 36002573

Change-Id: I298c526789b25734d5f18666c64497e5d1e181d0
2017-04-03 16:31:09 -07:00
Daniel Nicoara
6907e39aa4 VR: Add sepolicy for VR HWC service
VR HWC is being split out of VR Window Manager. It creates a HW binder
interface used by SurfaceFlinger which implements the HWComposer HAL and
a regular binder interface which will be used by a system app to receive
the SurfaceFlinger output.

Bug: b/36051907
Test: Ran in permissive mode and ensured no permission errors show in
logcat.

Change-Id: If1360bc8fa339a80100124c4e89e69c64b29d2ae
2017-03-31 10:25:53 -04:00
Steven Moreland
867aa27fdf shell.te: hwbinder for lshal
Update shell.te to reflect the fact that hwbinder_user permission is for
lshal, not dumpsys.

Bug: 33382892
Test: pass
Change-Id: I1d298261cea82177436a662afbaa767f00117b16
2017-02-13 15:42:42 -08:00
Nick Bray
084faf0259 Add policies for new services.
Bug: 30989383
Bug: 34731101
Test: manual
Change-Id: Icf9d48568b505c6b788f2f5f456f2d709969fbeb
2017-02-09 15:15:11 -08:00
Joe Onorato
41f93db9de Add incident command and incidentd daemon se policy.
Test: adb shell incident
Bug: 31122534
Change-Id: I4ac9c9ab86867f09b63550707673149fe60f1906
2017-02-07 15:52:07 -08:00
Steven Moreland
cd597cd52a property: add persist.hal.binderization
- Added set_prop to shell so that you can set it from shell.
- Added set_prop to sytem_app so that it can be updated in settings.

Bug: 34256441
Test: can update prop from Settings and shell. nfc and lights work with
ag/1833821 with persist.hal.binderization set to on and off. There are
no additional selinux denials.
Change-Id: I883ca489093c1d56b2efa725c58e6e3f3b81c3aa
2017-01-26 06:06:24 +00:00