I have updated the description with the information of the SRU version 4.0.1really4.0.1-0ubuntu0.24.04.3 The Test Plan is updated with detailed instructions and I also added an analysis of why the regression happened for the previous SRU. Note that since we have removed the enablement by default of the bwrap profile, some applications are still not going to work properly, which is the case for setzer in the test plan. A fix was already merged upstream [1] and will be present in a later 4.0.2 SRU.
[1] https://gitlab.com/apparmor/apparmor/-/merge_requests/1272 ** Description changed: [ Impact ] This SRU has several fixes: add unconfined profile for tuxedo-control-center (Bug 2046844) fix issues appointed by coverity fix samba profile (https://gitlab.com/apparmor/apparmor/-/issues/386) fix redefinition of _ which caused an issue with translation, failing aa-enforce (https://gitlab.com/apparmor/apparmor/-/issues/387) add mount test for CVE-2016-1585 (Bug 1597017 and Bug 2023814) add network inet mediation documentation to apparmor.d fix inet conditionals to only generate rules for inet family (https://gitlab.com/apparmor/apparmor/-/issues/384) add unconfined wike profile (Bug 2060810) add unconfined foliate profile (Bug 2060767) fix chromium_browser profile (https://gitlab.com/apparmor/apparmor/-/merge_requests/1208) add profiles for Transmission family of Bittorrent clients add profile for unshare utility (Bug 2046844) add profile for bwrap utility (Bug 2046844) fix unconfined firefox profile to support mozilla.org download (Bug 2056297) fix getattr and setattr perm mapping on mqueue rules (https://gitlab.com/apparmor/apparmor/-/issues/377 and https://gitlab.com/apparmor/apparmor/-/issues/378) fix inet tests (https://gitlab.com/apparmor/apparmor/-/issues/376) fix sshd profile (Bug 2060100) fix apparmor tools to allow mount destination globbing (https://gitlab.com/apparmor/apparmor/-/issues/381) fix firefox profile (https://gitlab.com/apparmor/apparmor/-/issues/380) move pam-related permissions to abstractions/authentication (https://bugzilla.opensuse.org/show_bug.cgi?id=1220032) fix condition in policydb serialization to only encode xtable if kernel_supports_permstable32 relax mount rules in utils to fix use of virtiofs and other file-system types [ Test Plan ] + * Make sure to reboot after upgrading (Bug 2072811) This has been extensively tested via the AppArmor regression test script in the QA Regression Testing repo: https://git.launchpad.net/qa-regression-testing/tree/scripts/test-apparmor.py + + Steps: + $ git clone https://git.launchpad.net/qa-regression-testing + $ ./scripts/make-test-tarball ./scripts/test-apparmor.py + Copying: test-apparmor.py + Copying: testlib.py + Copying: install-packages + Copying: packages-helper + Copying: apparmor/ + + Test files: /tmp/qrt-test-apparmor.tar.gz + + To run, copy the tarball somewhere, then do: + $ tar -zxf qrt-test-apparmor.tar.gz + $ cd ./qrt-test-apparmor + $ sudo ./install-packages test-apparmor.py + $ ./test-apparmor.py -v This script runs various tests against the installed apparmor package, as well as building and running the various upstream regression and other test suites against this installed package: - https://gitlab.com/apparmor/apparmor/-/tree/master/tests/regression/apparmor?ref_type=heads - https://gitlab.com/apparmor/apparmor/-/tree/master/utils/test?ref_type=heads - https://gitlab.com/apparmor/apparmor/-/tree/master/parser/tst?ref_type=heads - https://gitlab.com/apparmor/apparmor/-/tree/master/libraries/libapparmor/testsuite?ref_type=heads The final test output was: ---------------------------------------------------------------------- - Ran 62 tests in 1989.948s + Ran 62 tests in 1977.045s - OK (skipped=4) + OK (skipped=3) georgia@sec-noble-amd64:~$ apt policy apparmor apparmor: - Installed: 4.0.1-0ubuntu0.24.04.2 - Candidate: 4.0.1-0ubuntu0.24.04.2 + Installed: 4.0.1really4.0.1-0ubuntu0.24.04.3 + Candidate: 4.0.1really4.0.1-0ubuntu0.24.04.3 Run additional tests: 1. Install wike and make sure the wike window opens when executed: $ sudo apt install wike $ wike 2. Install foliate, download test epub and make sure it opens as expected: $ sudo apt install foliate $ wget https://github.com/daisy/epub-accessibility-tests/releases/download/fundamental-2.0/Fundamental-Accessibility-Tests-Basic-Functionality-v2.0.0.epub $ foliate Fundamental-Accessibility-Tests-Basic-Functionality-v2.0.0.epub 3. Install transmission and make sure it starts properly: $ sudo apt install transmission - $ transmission-gtk + $ transmission-gtk - 4. bwrap profile tests: - - Install setzer and check if it opens as expected: + 4. test bwrap profile is no longer enabled by default: + - Install setzer and it will not open because the bwrap profile is not loaded: $ sudo apt install setzer - $ setzer - - Check if flatpak option --unshare=network works, the Recipes app window should open: + $ setzer + + This is not a regression since it's the current behavior for + 4.0.1really4.0.0-beta3-0ubuntu0.1 + + - Check if the following flatpak apps still work: $ sudo apt install flatpak - $ flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo - $ flatpak install flathub org.gnome.Recipes + $ sudo flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo + $ sudo flatpak install flathub org.gnome.Recipes $ flatpak run --unshare=network org.gnome.Recipes + $ sudo flatpak install org.keepassxc.KeePassXC + $ flatpak run org.keepassxc.KeePassXC [ Where problems could occur ] There could still be more applications affected by the restriction of the creation of unpriviliged user namespaces. They might require the creation of new unconfined profiles which could be mitigated in a later SRU. [ Other Info ] The SRU is available in: - https://launchpad.net/~georgiag/+archive/ubuntu/4.0.1-0ubuntu0.24.04.2 + https://launchpad.net/~georgiag/+archive/ubuntu/4.0.1really4.0.1-0ubuntu0.24.04.3 + + Note that the previous SRU was reverted because of the regression in Bug 2072811. + This SRU has the same contents except for the enablement of the bwrap profile by default. The bwrap profile is available only under the apparmor-profiles package. + The regression on the SRU version 4.0.1-0ubuntu0.24.04.2 happened because we don't have enough tests covering flatpak/bubblewrap. We created the profile to be as broad as possible for bwrap to work as expected but prevent applications running inside it to be able to bypass the unprivileged user namespace restriction. The profile worked for the applications we received reports for but unfortunately it wasn't as thorough, in terms of the variety of apps, as we would have liked. ** Tags removed: verification-done verification-done-noble -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2064672 Title: [SRU] - fixes for apparmor on noble To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/2064672/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
