[Bug 1226356] [NEW] explicit deny rules do not silence logging denials

[Jamie Strandboge]

Public bug reported:

I have this rule in my profile:
  # We want to explicitly deny access to NetworkManager
  deny dbus (send)
       bus=system
       path=/org/freedesktop/NetworkManager,

but with this rule, I still see these denials:
Sep 17 01:03:02 ubuntu-phablet dbus[622]: apparmor="DENIED" operation="dbus_method_call"  bus="system" name="org.freedesktop.NetworkManager" path="/org/freedesktop/NetworkManager" interface="org.freedesktop.DBus.Introspectable" member="Introspect" mask="send" pid=3201 profile="net.launchpad.ubuntu-security.ubuntu-sdk-1310-api-demos_ubuntu-sdk-1310-api-demos_0.1" peer_pid=1154 peer_profile="unconfined"
Sep 17 01:03:02 ubuntu-phablet dbus[622]: apparmor="DENIED" operation="dbus_method_call"  bus="system" name="org.freedesktop.NetworkManager" path="/org/freedesktop/NetworkManager" interface="org.freedesktop.NetworkManager" member="GetDevices" mask="send" pid=3201 profile="net.launchpad.ubuntu-security.ubuntu-sdk-1310-api-demos_ubuntu-sdk-1310-api-demos_0.1" peer_pid=1154 peer_profile="unconfined"

Another one is this deny rule:
   deny dbus send bus=session
             interface="org.gnome.GConf.Server",

with these denials:
Sep 16 17:37:58 localhost dbus[16510]: apparmor="DENIED" operation="dbus_method_call"  bus="session" name="org.gnome.GConf" path="/org/gnome/GConf/Server" interface="org.gnome.GConf.Server" member="GetDefaultDatabase" mask="send" pid=15037 profile="net.launchpad.ubuntu-security.ubuntu-sdk-1310-api-demos_ubuntu-sdk-1310-api-demos_0.1" peer_pid=16736 peer_profile="unconfined"

While this isn't a 'high' priority because the accesses are still being
denied, it is a bug and the lack of silencing may cause confusion for
users.

** Affects: dbus (Ubuntu)
     Importance: Medium
     Assignee: Tyler Hicks (tyhicks)
         Status: Confirmed

** Affects: dbus (Ubuntu Saucy)
     Importance: Medium
     Assignee: Tyler Hicks (tyhicks)
         Status: Confirmed

** Also affects: dbus (Ubuntu Saucy)
   Importance: Undecided
       Status: New

** Changed in: dbus (Ubuntu Saucy)
       Status: New => Confirmed

** Changed in: dbus (Ubuntu Saucy)
   Importance: Undecided => Medium

** Changed in: dbus (Ubuntu Saucy)
     Assignee: (unassigned) => Tyler Hicks (tyhicks)

** Description changed:

  I have this rule in my profile:
-   # We want to explicitly deny access to NetworkManager
-   deny dbus (send)
-        bus=system
-        path=/org/freedesktop/NetworkManager,
+   # We want to explicitly deny access to NetworkManager
+   deny dbus (send)
+        bus=system
+        path=/org/freedesktop/NetworkManager,
  
  but with this rule, I still see these denials:
  Sep 17 01:03:02 ubuntu-phablet dbus[622]: apparmor="DENIED" operation="dbus_method_call"  bus="system" name="org.freedesktop.NetworkManager" path="/org/freedesktop/NetworkManager" interface="org.freedesktop.DBus.Introspectable" member="Introspect" mask="send" pid=3201 profile="net.launchpad.ubuntu-security.ubuntu-sdk-1310-api-demos_ubuntu-sdk-1310-api-demos_0.1" peer_pid=1154 peer_profile="unconfined"
  Sep 17 01:03:02 ubuntu-phablet dbus[622]: apparmor="DENIED" operation="dbus_method_call"  bus="system" name="org.freedesktop.NetworkManager" path="/org/freedesktop/NetworkManager" interface="org.freedesktop.NetworkManager" member="GetDevices" mask="send" pid=3201 profile="net.launchpad.ubuntu-security.ubuntu-sdk-1310-api-demos_ubuntu-sdk-1310-api-demos_0.1" peer_pid=1154 peer_profile="unconfined"
+ 
+ Another one is this deny rule:
+    deny dbus send bus=session                                                    
+              interface="org.gnome.GConf.Server",
+ 
+ with these denials:
+ Sep 16 17:37:58 localhost dbus[16510]: apparmor="DENIED" operation="dbus_method_call"  bus="session" name="org.gnome.GConf" path="/org/gnome/GConf/Server" interface="org.gnome.GConf.Server" member="GetDefaultDatabase" mask="send" pid=15037 profile="net.launchpad.ubuntu-security.ubuntu-sdk-1310-api-demos_ubuntu-sdk-1310-api-demos_0.1" peer_pid=16736 peer_profile="unconfined"

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https://bugs.launchpad.net/bugs/1226356

Title:
  explicit deny rules do not silence logging denials

Status in “dbus” package in Ubuntu:
  Confirmed
Status in “dbus” source package in Saucy:
  Confirmed

Bug description:
  I have this rule in my profile:
    # We want to explicitly deny access to NetworkManager
    deny dbus (send)
         bus=system
         path=/org/freedesktop/NetworkManager,

  but with this rule, I still see these denials:
  Sep 17 01:03:02 ubuntu-phablet dbus[622]: apparmor="DENIED" operation="dbus_method_call"  bus="system" name="org.freedesktop.NetworkManager" path="/org/freedesktop/NetworkManager" interface="org.freedesktop.DBus.Introspectable" member="Introspect" mask="send" pid=3201 profile="net.launchpad.ubuntu-security.ubuntu-sdk-1310-api-demos_ubuntu-sdk-1310-api-demos_0.1" peer_pid=1154 peer_profile="unconfined"
  Sep 17 01:03:02 ubuntu-phablet dbus[622]: apparmor="DENIED" operation="dbus_method_call"  bus="system" name="org.freedesktop.NetworkManager" path="/org/freedesktop/NetworkManager" interface="org.freedesktop.NetworkManager" member="GetDevices" mask="send" pid=3201 profile="net.launchpad.ubuntu-security.ubuntu-sdk-1310-api-demos_ubuntu-sdk-1310-api-demos_0.1" peer_pid=1154 peer_profile="unconfined"

  Another one is this deny rule:
     deny dbus send bus=session
               interface="org.gnome.GConf.Server",

  with these denials:
  Sep 16 17:37:58 localhost dbus[16510]: apparmor="DENIED" operation="dbus_method_call"  bus="session" name="org.gnome.GConf" path="/org/gnome/GConf/Server" interface="org.gnome.GConf.Server" member="GetDefaultDatabase" mask="send" pid=15037 profile="net.launchpad.ubuntu-security.ubuntu-sdk-1310-api-demos_ubuntu-sdk-1310-api-demos_0.1" peer_pid=16736 peer_profile="unconfined"

  While this isn't a 'high' priority because the accesses are still
  being denied, it is a bug and the lack of silencing may cause
  confusion for users.

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