AppArmor
Test plan for component: AppArmor
Component Checklist: https://wiki.ubuntu.com/Process/Merges/Checklists/AppArmor
Trunk URL: lp:~apparmor-dev/apparmor/apparmor-ubuntu-citrain
Ubuntu Package URL (LP): http://launchpad.net/ubuntu/+source/apparmor
Dependents/Clients
- dbus
- snapd
- lxd
- lxc
- libvirt/libvirt-lxc
- docker.io
Test Plan
Common tests
AppArmor
- Have an up to date Ubuntu Desktop and/or Server VM
- Install freshly built packages that are needed for landing and reboot
- Eg:
devel: copy_sppa_to_repos --arch=i386,amd64 --include-devel --ppa=ubuntu-security-proposed/ppa apparmor
- Eg:
- Verify the system comes up and has networking (dhclient profile)
Verify the output of aa-status. It should report:
- many profiles loaded (eg, 20 or more)
- many profiles in enforce mode (eg, 20 or more)
- 0 profiles in complain mode (unless libreoffice-common, apparmor-profiles, or some other special package is installed)
- some process should have a profile defined
- some process should be in enforce mode (the same number as '4', above)
- 0 processes in complain mode (unless libreoffice-common, apparmor-profiles, or some other special package is installed)
- 0 processes are unconfined but have a profile defined
- Verify cache files have no errors
18.10 and lower:
$ for i in /etc/apparmor.d/cache /var/cache/apparmor ; do echo "= $i =" ; for j in $i/* ; do echo -n "$j: " ; sudo apparmor_parser -B -r $j && echo pass || echo FAIL ; done ; done | grep FAIL
19.04 and higher:
$ export AACACHEDIR=$(sudo apparmor_parser --print-cache-dir) $ for i in $(sudo ls -1 "$AACACHEDIR") ; do echo -n "$i: " ; sudo apparmor_parser -B -r "$AACACHEDIR/$i" && echo pass || echo FAIL ; done | grep FAIL
- Verified the cache is used
18.10 and lower:
$ sudo rm -rf /etc/apparmor.d/cache/* $ sudo /sbin/apparmor_parser --remove /etc/apparmor.d $ sudo /sbin/apparmor_parser --write-cache --add /etc/apparmor.d $ ls /etc/apparmor.d/cache sbin.dhclient usr.lib.libreoffice.program.xpdfimport usr.bin.evince usr.lib.snapd.snap-confine.real ... $ sudo /sbin/apparmor_parser --remove /etc/apparmor.d $ sudo /sbin/apparmor_parser -k --write-cache --add /etc/apparmor.d 2>&1 | grep -i miss # should be no misses $
19.04 and higher:
$ sudo rm -rf /var/cache/apparmor/* $ sudo /sbin/apparmor_parser --remove /etc/apparmor.d $ sudo /sbin/apparmor_parser --write-cache --add /etc/apparmor.d $ sudo ls /var/cache/apparmor/* nvidia_modprobe usr.bin.evince usr.lib.snapd.snap-confine.real usr.sbin.cupsd sbin.dhclient usr.bin.man usr.sbin.cups-browsed usr.sbin.ippusbxd $ sudo /sbin/apparmor_parser --remove /etc/apparmor.d $ sudo /sbin/apparmor_parser -k --write-cache --add /etc/apparmor.d 2>&1 | grep -i miss # should be no misses $
Integration
Verify Ubuntu Desktop and/or Server works by performing basic login testing - eg, verify networking, verify browser launches, verify apt-get works
QRT
Run QRT/scripts/test-apparmor.py on Ubuntu Desktop/Server (Note: in the exceptional case when there are temporary new expected failures, be sure to update test-apparmor.py for these to not block kernel team processes):
$ git clone https://git.launchpad.net/qa-regression-testing $ cd qa-regression-testing $ ./scripts/make-test-tarball ./scripts/test-apparmor.py # To run, copy /tmp/qrt-test-apparmor.tar.gz to the target system, then do: $ tar -zxf qrt-test-apparmor.tar.gz $ cd ./qrt-test-apparmor $ sudo ./install-packages test-apparmor.py $ sudo ./test-apparmor.py -v
lxc
Verify lxc container starts with new AppArmor on Ubuntu Desktop/Server:
~$ sudo apt-get install lxc lxc-templates ~$ sudo lxc-create -t ubuntu -n CN # or: sudo MIRROR=http://<mirror>/ubuntu lxc-create ... ~$ sudo lxc-start -n CN # later versions (eg 15.04) may not start in a console ... Ubuntu Trusty Tahr (development branch) CN console CN login: ubuntu Password: ...
Run a few external commands:
$ sudo lxc-ls CN $ sudo lxc-info --name CN Name: CN State: RUNNING PID: 24354 IP: 10.0.3.153 CPU use: 1.80 seconds BlkIO use: 12.18 MiB Memory use: 20.58 MiB KMem use: 0 bytes Link: vethYD8QMX TX bytes: 2.90 KiB RX bytes: 6.77 KiB Total bytes: 9.67 KiB $ sudo lxc-console --name CN Connected to tty 1 Type <Ctrl+a q> to exit the console, <Ctrl+a Ctrl+a> to enter Ctrl+a itself Ubuntu Utopic Unicorn (development branch) CN tty1 CN login: ... $ sudo lxc-attach --name CN uptime 22:29:49 up 1:10, 1 user, load average: 0.06, 0.31, 0.58
Verify apparmor profiles are in use:
$ sudo aa-status | grep ') lxc' /usr/sbin/agetty (871) lxc-container-default-cgns /usr/lib/systemd/systemd (32182) lxc-container-default-cgns ...
When done, shut it down with (outside the container (tests lxc-start still works to control the container)):
$ sudo lxc-stop -k -n CN
Verify apparmor profiles are no longer in use:
$ sudo aa-status | grep ') lxc' $
And, finally, destroy it:
$ sudo lxc-destroy -n CN
lxd
Verify lxd container starts with new AppArmor on Ubuntu Desktop/Server:
deb (deprecated on 18.10 and higher):
$ sudo apt-get install lxd $ newgrp lxd
snap:
$ sudo apt-get remove --purge lxd lxc $ sudo snap install lxd $ sudo adduser `id -un` lxd $ newgrp lxd $ sudo lxd init # use defaults
Once lxd is installed:
$ . /etc/profile.d/apps-bin-path.sh # in case /snap/bin is not in your PATH $ lxc image list images: ... | | 0d4bfe75bd0d | yes | Ubuntu trusty (amd64) (20160321_03:49) | x86_64 | 75.60MB | Mar 21, 2016 at 4:19am (UTC) | ... $ lxc launch ubuntu: ubuntu-64 ... Creating ubuntu-64 Retrieving image: 100% Starting ubuntu-64 $ lxc list +-----------+---------+-------------------+------+------------+-----------+ | NAME | STATE | IPV4 | IPV6 | TYPE | SNAPSHOTS | +-----------+---------+-------------------+------+------------+-----------+ | ubuntu-64 | RUNNING | 10.0.3.181 (eth0) | | PERSISTENT | 0 | +-----------+---------+-------------------+------+------------+-----------+ $ lxc info ubuntu-64 Name: ubuntu-64 Architecture: i686 Created: 2016/03/22 17:55 UTC Status: Running Type: persistent Profiles: default Pid: 2612 Processes: 8 Ips: eth0: inet 10.0.3.181 vethIKDBKR eth0: inet6 fe80::216:3eff:fe88:59b7 vethIKDBKR lo: inet 127.0.0.1 lo: inet6 ::1 $ sudo aa-status | grep ') lxd-ubuntu-64' /usr/lib/systemd/systemd (14348) lxd-ubuntu-64_</var/snap/lxd/common/lxd>//&:lxd-ubuntu-64_<var-snap-lxd-common-lxd>:unconfined /usr/lib/systemd/systemd-journald (14464) lxd-ubuntu-64_</var/snap/lxd/common/lxd>//&:lxd-ubuntu-64_<var-snap-lxd-common-lxd>:unconfined $ lxc exec ubuntu-64 /bin/bash root@ubuntu-64:~# ls root@ubuntu-64:~# uptime 17:58:40 up 3 min, 0 users, load average: 0.01, 0.06, 0.05 root@ubuntu-64:~# aa-status # AppArmor stacking works apparmor module is loaded. 15 profiles are loaded. 15 profiles are in enforce mode. /sbin/dhclient /usr/bin/lxc-start ... root@ubuntu-64:~# exit $ lxc exec ubuntu-64 ps PID TTY TIME CMD 1552 ? 00:00:00 ps # pull/push files $ lxc file pull ubuntu-64/etc/hostname . $ lxc file push hostname ubuntu-64/tmp/hostname $ lxc exec ubuntu-64 -- cat /tmp/hostname ubuntu-64 $ lxc stop ubuntu-64 $ sudo aa-status | grep ') lxd-ubuntu-64' # profiles unloaded $ $ lxc delete ubuntu-64
libvirt
Install libvirt and ensure that the libvirtd group is part of the current session:
$ sudo apt-get install libvirt-bin # libvirt-daemon on more recent Ubuntu releases $ newgrp libvirtd
- Follow setup instructions in $QRT/notes_testing/libvirt/README
Verify qemu/kvm libvirt VMs start under confinement (verify with sudo aa-status) with new AppArmor on Ubuntu Desktop/Server by using QRT/scripts/test-libvirt.py (note: there are some failures unrelated to apparmor, so do a baseline run before upgrading to compare)
Verify libvirt-lxc VMs start with new AppArmor on Ubuntu Desktop/Server by following SergeHallyn_libvirtlxc
IMPORTANT: The instructions linked to above will not work until bug #1445611 is fixed.
docker
Verify docker.io (need at least 1.2) containers with new AppArmor on Ubuntu Desktop/Server:
$ sudo apt-get install docker.io # should not have libvirt or lxc co-installed $ sudo docker pull ubuntu:bionic ... 6e1bee0f8701: Pull complete Digest: sha256:d019bdb3ad5af96fa1541f9465f070394c0daf0ffd692646983f491ce077b70f Status: Downloaded newer image for ubuntu:bionic $ sudo docker images REPOSITORY TAG IMAGE ID CREATED SIZE ubuntu bionic 94e814e2efa8 44 hours ago 88.9MB $ sudo docker run ubuntu:bionic uptime 20:31:21 up 1 min, 0 users, load average: 0.09, 0.06, 0.03 ... $ sudo aa-status|grep docker docker-default $ sudo docker run -i -t ubuntu:bionic /bin/sh # ps PID TTY TIME CMD 1 ? 00:00:00 sh 7 ? 00:00:00 ps
At this point, an interactive shell is running in the terminal. In another, try a couple of operations:
$ sudo aa-status|grep docker docker-default /usr/bin/dash (24201) docker-default $ sudo docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 3acc3d52bca2 ubuntu:bionic "/bin/sh" 43 seconds ago Up 42 seconds nostalgic_ramanujan $ ps -Z 24201 LABEL PID TTY STAT TIME COMMAND docker-default (enforce) 24201 pts/0 Ss+ 0:00 /bin/sh $ sudo docker inspect 3acc3d52bca2 [ { "Id": "3acc3d52bca28aa40da695781bb7a1195c3c4d5d821c350e272f4ed9d8582271", "Created": "2019-03-13T20:10:33.671935431Z", "Path": "/bin/sh", "Args": [], "State": { "Status": "running", ...
In the terminal running 'sh', now exit:
# exit $ sudo docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES $ sudo aa-status|grep docker docker-default
snapd
Verify snappy works ok:
$ sudo apt-get install snapd $ sudo snap install hello-world $ sudo aa-status | grep snap /snap/core/6623/usr/lib/snapd/snap-confine /snap/core/6623/usr/lib/snapd/snap-confine//mount-namespace-capture-helper /usr/lib/snapd/snap-confine /usr/lib/snapd/snap-confine//mount-namespace-capture-helper snap-update-ns.core snap-update-ns.hello-world snap.core.hook.configure snap.hello-world.env snap.hello-world.evil snap.hello-world.hello-world snap.hello-world.sh $ . /etc/profile.d/apps-bin-path.sh # in case /snap/bin is not in your PATH $ hello-world.evil Hello Evil World! This example demonstrates the app confinement You should see a permission denied error next /snaps/hello-world.canonical/6.0/bin/evil: 9: /snaps/hello-world.canonical/6.0/bin/evil: cannot create /var/tmp/myevil.txt: Permission denied $ hello-world.sh Launching a shell inside the default app confinement. Navigate to your app-specific directories with: $ cd $SNAP $ cd $SNAP_DATA $ cd $SNAP_USER_DATA bash-4.3$ cat /etc/fstab cat: /etc/fstab: Permission denied bash-4.3$ exit $ sudo snap install snappy-debug $ snappy-debug.scanlog --only-snap=hello-world = AppArmor = Time: Mar 13 15:17:16 Log: apparmor="DENIED" operation="mknod" profile="snap.hello-world.evil" name="/var/tmp/myevil.txt" pid=28941 comm="evil" requested_mask="c" denied_mask="c" fsuid=1000 ouid=1000 File: /var/tmp/myevil.txt (write) = AppArmor = Time: Mar 13 15:17:42 Log: apparmor="DENIED" operation="open" profile="snap.hello-world.sh" name="/etc/fstab" pid=29215 comm="cat" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 File: /etc/fstab (read) $ sudo snap remove hello-world $ sudo ls /var/cache/apparmor/* | grep hello-world # cache files are removed $
Desktop only
dbus
Run QRT/scripts/test-dbus.py on Ubuntu Desktop:
$ ./scripts/make-test-tarball ./scripts/test-dbus.py # To run, copy /tmp/qrt-test-dbus.tar.gz to the target system, then log in through a graphical session and do: $ tar -zxf qrt-test-dbus.tar.gz $ cd ./qrt-test-dbus $ sudo ./install-packages test-dbus.py $ sudo ./test-dbus.py -v
autopkgtests
OPTIONAL: apparmor, dbus, and lxc autopkgtests (requires autopkgtest VM. Note: runs before promotion to -proposed, but there are manual tests below that should be performed before upload)
Create a pristine VM for testing:
$ autopkgtest-buildvm-ubuntu-cloud -v
Run the apparmor autopkgtests in the VM (only possible in apparmor-2.11.0-4 and newer):
$ autopkgtest -BUl /tmp/apparmor-autopkgtest.out ../source/*.dsc ../binary/*.deb -- autopkgtest-virt-qemu /tmp/autopkgtest-bionic-amd64.img || echo "** AUTOPKGTESTS FAILED"
Run the dbus autopkgtests in the VM:
$ autopkgtest -BUl /tmp/dbus-autopkgtest.out dbus ../binary/*.deb -- autopkgtest-virt-qemu adt-bionic-amd64-cloud.img || echo "** AUTOPKGTESTS FAILED"
Run the lxc autopkgtests after enabling a PPA and updating and dist-upgrading:
$ autopkgtest -BUl /tmp/lxc-autopkgtest.out ../binary/*.deb lxc -- autopkgtest-virt-qemu adt-bionic-amd64-cloud.img || echo "** AUTOPKGTESTS FAILED"
Process/Merges/TestPlans/AppArmor (last edited 2020-08-31 05:59:24 by alexmurray)