Chromium not working in guest session (need more AppArmor rules)

BTW: the logs say "ALLOWED", but still are annoying.

apparmor="ALLOWED" operation="capable" profile="/usr/lib/chromium-browser/chromium-browser" comm="chromium-browse" capability=21 capname="sys_admin"
apparmor="ALLOWED" operation="open" profile="/usr/lib/chromium-browser/chromium-browser" name="/proc/32564/setgroups" comm="chromium-browse" requested_mask="w" denied_mask="w" fsuid=1000 ouid=1000
apparmor="ALLOWED" operation="capable" profile="/usr/lib/chromium-browser/chromium-browser" comm="chromium-browse" capability=21 capname="sys_admin"
apparmor="ALLOWED" operation="open" profile="/usr/lib/chromium-browser/chromium-browser" name="/proc/32564/uid_map" comm="chromium-browse" requested_mask="w" denied_mask="w" fsuid=1000 ouid=1000
apparmor="ALLOWED" operation="open" profile="/usr/lib/chromium-browser/chromium-browser" name="/proc/32564/gid_map" comm="chromium-browse" requested_mask="w" denied_mask="w" fsuid=1000 ouid=1000
apparmor="ALLOWED" operation="open" profile="/usr/lib/chromium-browser/chromium-browser" name="/proc/32564/setgroups" comm="chromium-browse" requested_mask="w" denied_mask="w" fsuid=1000 ouid=1000
apparmor="ALLOWED" operation="capable" profile="/usr/lib/chromium-browser/chromium-browser" comm="chromium-browse" capability=21 capname="sys_admin"
apparmor="ALLOWED" operation="open" profile="/usr/lib/chromium-browser/chromium-browser" name="/proc/32564/gid_map" comm="chromium-browse" requested_mask="w" denied_mask="w" fsuid=1000 ouid=1000
apparmor="ALLOWED" operation="open" profile="/usr/lib/chromium-browser/chromium-browser" name="/proc/32564/uid_map" comm="chromium-browse" requested_mask="w" denied_mask="w" fsuid=1000 ouid=1000
apparmor="ALLOWED" operation="open" profile="/usr/lib/chromium-browser/chromium-browser//xdgsettings" name="/etc/xdg/xdg-xubuntu/xfce4/helpers.rc" comm="grep" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
apparmor="ALLOWED" operation="open" profile="/usr/lib/chromium-browser/chromium-browser//xdgsettings" name="/etc/xdg/xdg-xubuntu/xfce4/helpers.rc" comm="grep" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
apparmor="ALLOWED" operation="open" profile="/usr/lib/chromium-browser/chromium-browser" name="/proc/32748/stat" comm="Chrome_FileThre" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
apparmor="ALLOWED" operation="capable" profile="/usr/lib/chromium-browser/chromium-browser" comm="chromium-browse" capability=19 capname="sys_ptrace"
apparmor="ALLOWED" operation="open" profile="/usr/lib/chromium-browser/chromium-browser//xdgsettings" name="/etc/xdg/xdg-xubuntu/xfce4/helpers.rc" comm="grep" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
apparmor="ALLOWED" operation="open" profile="/usr/lib/chromium-browser/chromium-browser//xdgsettings" name="/etc/xdg/xdg-xubuntu/xfce4/helpers.rc" comm="grep" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
apparmor="ALLOWED" operation="open" profile="/usr/lib/chromium-browser/chromium-browser" name="/proc/32766/stat" comm="BrowserBlocking" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
apparmor="ALLOWED" operation="capable" profile="/usr/lib/chromium-browser/chromium-browser" comm="chromium-browse" capability=19 capname="sys_ptrace"
apparmor="ALLOWED" operation="capable" profile="...

Please paste the output of

    $ dpkg -S $(grep -l -r chromium /etc/apparmor.d/)

This bug was fixed in the package lightdm - 1.16.4-0ubuntu1

---------------
lightdm (1.16.4-0ubuntu1) wily; urgency=medium

  * New upstream release:
    - Fix apparmor profiles for running Chromium in guest sessions
      (LP: #1504049)

 -- Robert Ancell <email address hidden> Tue, 13 Oct 2015 11:47:16 +0100

# dpkg -S $(grep -l -r chromium /etc/apparmor.d/)
dpkg-query: no path found matching pattern /etc/apparmor.d/abstractions/ubuntu-browsers.d/chromium-browser
evince-common: /etc/apparmor.d/abstractions/evince
lightdm: /etc/apparmor.d/abstractions/lightdm
apparmor: /etc/apparmor.d/abstractions/private-files-strict
apparmor: /etc/apparmor.d/abstractions/ubuntu-browsers
apparmor: /etc/apparmor.d/abstractions/ubuntu-helpers
lightdm: /etc/apparmor.d/abstractions/lightdm_chromium-browser
dpkg-query: no path found matching pattern /etc/apparmor.d/cache/usr.bin.chromium-browser
dpkg-query: no path found matching pattern /etc/apparmor.d/cache/lightdm-guest-session
dpkg-query: no path found matching pattern /etc/apparmor.d/local/usr.bin.chromium-browser
lightdm: /etc/apparmor.d/lightdm-guest-session
apparmor-profiles: /etc/apparmor.d/usr.bin.chromium-browser

Hadmut, thank you, but I don't understand the significance of your comment. Can you elucidate what you intend us to know?

> Can you elucidate what you intend us to know?

Not really.

You had asked me in comment #5 to paste in the output of this command, and I did as requested.

I had no intention to transport a major message to the world, just to fulfill what I had been asked for.

Ah! I was worried it was some additional problem report after the package
was modified through the security update above. Thank you.

We think it should work for you after this update to lightdm is applied.

Could you please edit also the following directive in abstractions/lightdm_chromium-browser? I cannot close Chromium remotely with "killall chromium" from a guest session because it's currently disallowed to receive SIGTERM.

signal (receive, send) set=("exists", "term") peer=/usr/lib/lightdm/lightdm-guest-session

Laércio - can you open a new bug for this?

OK, Robert!

Hello Hadmut, or anyone else affected,

Accepted lightdm into vivid-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/lightdm/1.14.3-0ubuntu1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

On Vivid I could load ubuntu.com from Chromium in a guest account.

It doesn't look like any of the fixes will be in the chromium-browser package. Can I remove that task from the bug?

Hello Hadmut, or anyone else affected,

Accepted lightdm into trusty-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/lightdm/1.10.6-0ubuntu1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

On Trusty I could load ubuntu.com from Chromium in a guest account.

This bug was fixed in the package lightdm - 1.10.6-0ubuntu1

---------------
lightdm (1.10.6-0ubuntu1) trusty; urgency=medium

  * New upstream release:
    - Handle trailing whitespace on boolean values in configuration.
      (LP: #1507033)
    - Use libaudit to generate audit events.
    - Fix apparmor profiles for running Chromium in guest sessions.
      (LP: #1504049)
    - Add LC_PAPER, LC_NAME, LC_ADDRESS, LC_TELEPHONE, LC_MEASUREMENT and
      LC_IDENTIFICATION variables to the list of inherited locale variables.
      (LP: #1511259)
    - Add a backup-logs option that can be used to disable existing logging
      files having a .old suffix added to them.
    - Check the version of the X server we are running so we correctly pass
      -listen tcp when required. (LP: #1449282)
    - Use IP address of XDMCP requests to contact X server if available.
      (LP: #1481561)
    - Implement XDMCP ForwardQuery. (LP: #1511545)
    - Add an option for XDMCP and VNC servers to only listen on one address.
      (LP: #1390808)
    - Don't start LightDM if the XDMCP server is configured with a key that
      doesn't exist. (LP: #1517685)
    - Add IP addresses to XDMCP log messages.
    - Refactor XDMCP error handling.
    - Fix small memory leak in XDMCP logging code.
    - Fix typo in dm-tool man page. (LP: #1470587)
    - Use new Xmir binary when running X under Unity System Compositor.
    - Fix all the things that prevent clang (3.5) from building LightDM with
      -Werror.
    - Add more tests.

 -- Robert Ancell <email address hidden> Fri, 20 Nov 2015 16:07:50 +1300

The verification of the Stable Release Update for lightdm has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

This bug was fixed in the package lightdm - 1.14.4-0ubuntu1

---------------
lightdm (1.14.4-0ubuntu1) vivid; urgency=medium

  * New upstream release:
    - Handle XDMCP Request packet with no addresses. (LP: #1516831)
    - Don't start LightDM if the XDMCP server is configured with a key that
      doesn't exist. (LP: #1517685)
    - Add IP addresses to XDMCP log messages.
    - Refactor XDMCP error handling.
    - Add more tests.

 -- Robert Ancell <email address hidden> Fri, 20 Nov 2015 16:01:15 +1300