- allow reading *.so.*
- allow directory listings in .../site-packages/
- allow reading various metadata files
These additions are based on denials seen on openSUSE Leap 15.3 with
python 3.9.
This keeps all existing permissions, and adds a few that were out of
sync:
- /usr/lib*/python3.*/lib-dynload/*.so missed 3.1[0-9]
- /usr/lib/python3/... was missing, only /usr/local/python3/ was allowed
Understacking AppArmor if it is not the major LSM may set the enabled
field to false, to keep userspace from hitting the old shared proc
interfaces. The parameter "available" is added to indicate apparmor
is available but not present on the older interfaces.
Fixes: https://gitlab.com/apparmor/apparmor/-/issues/150
MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/713
Signed-off-by: John Johansen <john.johansen@canonical.com>
crypto allows reading /etc/gcrypt/random.conf, which is possibly needed
for all programs that use libgcrypt.
Reported by darix, he has seen it with vivaldi.
See https://gitlab.com/redhat-crypto/fedora-crypto-policies for details.
Reported by darix and also my own audit.log - the actual denial was for
/usr/share/crypto-policies/DEFAULT/openssl.txt.
Also allow the /etc/crypto-policies/ counterpart.
(I'm aware that the crypto policies are not really certificates, but
since they are used by several crypto libraries, ssl_certs is probably
the best place for them even if the filename doesn't match.)
the video abstraction currently it only contains the following rules:
@{sys}/class/video4linux r,
@{sys}/class/video4linux/** r,
Judging by the v4l path, this abstraction should be used whenever some
app wants to use for instance a webcam or other USB cameras to stream
video usually in chat apps. I was testing some apps, and it looks like
the following rules are needed to make the video streaming possible:
Fixes: https://gitlab.com/apparmor/apparmor/-/issues/159
MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/740
Signed-off-by: John Johansen <john.johansen@canonical.com>
Apparmor provides the wayland abstraction, but it looks like it misses
some rules. For instance, there are many wayland compositors which are
based on wlroots, and it looks like that when you try to use such
compositor, all GUI apps executed in the graphical environment can't
work properly (they don't event start). They all want the following
rule:
Fixes: https://gitlab.com/apparmor/apparmor/-/issues/143
MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/725
Signed-off-by: John Johansen <john.johansen@canonical.com>
Currently the wutmp abstraction has the following rules:
/var/log/lastlog rwk,
/var/log/wtmp wk,
@{run}/utmp rwk,
According to what I see in my apparmor profiles, just a few apps want
to interact with the files listed above, especially with the
/var/log/wtmp . But when the apps do this, they sometimes want the
read access to this file. An example could be the last command. Is
there any reason for not having the r in the rule? The second thing
is the file /var/log/btmp (which isn't included in the
abstracion). Whenever I see an app, which wants to access the
/var/log/wtmp file, it also tries to interact with the /var/log/btmp
file, for instance lightdm/sddm or su . Most of the time they need
just wk permissions, but sometimes apps need also r on this file, an
example could be the lastb command, which is just a link to last.
Fixes: https://gitlab.com/apparmor/apparmor/-/issues/152
MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/724
Signed-off-by: John Johansen <john.johansen@canonical.com>
- On Arch Linux certificates are extracted to /etc/ca-certificates/ by the update-ca-trust script.
- /etc/libressl/ is used by Arch Linux's libressl package.
- Combine rules to reduce number of lines.
With the exception of the documentation fixes, these should all be
invisible to users.
Signed-off-by: Steve Beattie <steve.beattie@canonical.com>
Acked-by: Christian Boltz <apparmor@cboltz.de>
MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/687
Unfortunately in apparmor sockets need `rw` access. Currently x11 can only work if abstract socket is available and used instead so those restrictions won't trigger.
partially reverts c7b8368216
MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/664
Acked-by: John Johansen <john.johansen@canonical.com>
[Fontmatrix](https://github.com/fontmatrix/fontmatrix) [adds \~/.Fontmatrix/Activated to fonts.conf](https://github.com/fontmatrix/fontmatrix/blob/75552e2/src/typotek.cpp#L1081-L1088). This causes programs which use [Fontconfig](https://gitlab.freedesktop.org/fontconfig/fontconfig) (directly or indirectly through libraries such as [Pango](https://pango.gnome.org/)) to include that directory in their font search path, which causes errors such as:
```
audit: type=1400 audit(1602678958.525:53): apparmor="DENIED" operation="open" profile="fr.emersion.Mako" name="/home/username/.Fontmatrix/Activated/.uuid" pid=48553 comm="mako" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
audit: type=1400 audit(1602678958.525:54): apparmor="DENIED" operation="open" profile="fr.emersion.Mako" name="/home/username/.Fontmatrix/Activated/" pid=48553 comm="mako" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
```
if the program does not explicitly include this directory in its AppArmor profile. As with other common font locations, add `~/.Fontmatrix/Activated` to the fonts abstraction for read-only access.
MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/657
Acked-by: John Johansen <john.johansen@canonical.com>
Unfortunately in apparmor sockets need rw access. Currently x11 can only work if abstract socket is available and used instead so those restrictions won't trigger. This partially reverts c7b8368216
[Fontmatrix] [adds ~/.Fontmatrix/Activated to fonts.conf]. This causes
programs which use [Fontconfig] (directly or indirectly through
libraries such as [pango]) to include that directory in their font
search path, which causes errors such as:
audit: type=1400 audit(1602678958.525:53): apparmor="DENIED" operation="open" profile="fr.emersion.Mako" name="/home/username/.Fontmatrix/Activated/.uuid" pid=48553 comm="mako" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
audit: type=1400 audit(1602678958.525:54): apparmor="DENIED" operation="open" profile="fr.emersion.Mako" name="/home/username/.Fontmatrix/Activated/" pid=48553 comm="mako" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
if the program does not explicitly include this directory in its
AppArmor profile. As with other common font locations, add
~/.Fontmatrix/Activated to the fonts abstraction for read-only access.
[Fontconfig]: https://gitlab.freedesktop.org/fontconfig/fontconfig
[Fontmatrix]: https://github.com/fontmatrix/fontmatrix
[Pango]: https://pango.gnome.org/
[adds ~/.Fontmatrix/Activated to fonts.conf]: https://github.com/fontmatrix/fontmatrix/blob/75552e2/src/typotek.cpp#L1081-L1088
Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
This tightens the cache location in @{HOME}/.cache and also adds
the tmp fallback location.
Currently there are the following entries in the mesa abstraction:
Fixes: https://gitlab.com/apparmor/apparmor/-/issues/91
Signed-off-by: John Johansen <john.johansen@canonical.com>
New kernels provide an alternative proc attr interface for apparmor
which is needed for LSM stacking.
Update the remaining profiles that use the old interface to
include access to the new interface.
Signed-off-by: John Johansen <john.johansen@canonical.com>
LSM stacking adds new interfaces
/proc/<pid>/attr/apparmor/*
that should be used in preference of the old interface files in
/proc/<pid>/attr/*
The library has already been updated to use the new path but the
abstraction for change_profile has not so accessing the new interface
in a confined application fails.
Fix this by making the abstraction cover the old and new interfaces.
MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/626
Signed-off-by: John Johansen <john.johansen@canonical.com>
- drop out dated maintenance comment
- cleanup profile name rules, and fix a few broken references
- /usr/lib -> /{usr,}/lib
- lib -> lib{,32,64}
MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/611
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Acked-by: Steve Beattie <steve.beattie@canonical.com>
Host files accessed by tcp_wrapper can reference other files, from man
5 hosts.allow
```
A string that begins with a '/' character is treated as a file name. A host name or address is matched if it matches any host name or address pattern listed in the named file. The file format is zero or more lines with zero or more host name or address patterns separated by whitespace. A file name pattern can be used anywhere a host name or address pattern can be used.
```
This means adding a file to hosts requires updating multiple profiles
Add a hosts abstraction so users only have to modify a single location.
MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/605
Fixes: https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1864466
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Christian Boltz <apparmor@cboltz.de>
Ubuntu is dropping their chromium-browser profile because
chromium-browser has been made a snap on ubuntu. Suck in the profile
upstream as a reference profile for those who want to confine
chromium outside of a snap, and update its includes.
MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/606
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Steve Beattie <steve.beattie@canonical.com>
Adapted from https://nordisch.org/posts/php-fpm-apparmor/, port the
nextcloud-independent portion of the php-fpm worker abstractions and
php-fpm isolation for more general usage.
Signed-off-by: Antonio Russo <antonio.e.russo@gmail.com>
The authentication, base and nameservice abstraction used /{usr/,}etc/
in several rules. Switch that to the more readable (and tunable)
@{etc_ro} variable.
Mikhail Morfikov has discovered [0] that some font packages in Debian
ships font files in /usr/bin/fonts-foo-bar (like
/usr/share/fonts-font-awesome/ for example). This produces denials for
GUI applications.
Update fonts abstraction to allow reading /usr/bin/fonts-* directories.
Also, refactor abstraction to aggregate two old rules into one.
Closes#94
[0] https://gitlab.com/apparmor/apparmor/-/issues/94
