Lintian tag: dbus-policy-excessively-broad

Type: error

Description (from lintian-explain-tags)

The package contains D-Bus policy configuration that matches broad classes
of messages. This will cause strange side-effects, is almost certainly
unintended, and is a probable security flaw.

For instance,

<policy user="daemon">
<allow send_type="method_call"/>
<allow send_destination="com.example.Bees"/>
</policy>

in any system bus policy file would allow the daemon user to send any
method call to any service, including method calls which are meant to be
restricted to root-only for security, such as
org.freedesktop.systemd1.Manager.StartTransientUnit. (In addition, it
allows that user to send any message to the com.example.Bees service.)

The intended policy for that particular example was probably more like

<policy user="daemon">
<allow send_type="method_call" send_destination="com.example.Bees"/>
</policy>

which correctly allows method calls to that particular service only.

Please refer to http://www.openwall.com/lists/oss-security/2015/01/27/25
for details.

Visibility: error
Show-Always: no
Check: desktop/dbus

Affected packages

source version binary level tag count information
geoclue-2.0 2.8.0-1 geoclue-2.0/2.8.0-1 overridden dbus-policy-excessively-broad 8 <policy user="geoclue"><allow send_interface="org.freedesktop.DBus.Properties" send_path="/org/freedesktop/GeoClue2/Agent"/> [usr/share/dbus-1/system.d/org.freedesktop.GeoClue2.Agent.conf:2]
openvpn3-client 25+dfsg-3 openvpn3-client/25+dfsg-3+b1 overridden dbus-policy-excessively-broad 5 <policy context="default"><allow send_path="/net/openvpn/v3/configuration" send_interface="org.freedesktop.DBus.Properties" send_type="method_call" send_member="Get"/> [usr/share/dbus-1/system.d/net.openvpn.v3.configuration.conf:22]
openvpn3-client 25+dfsg-3 openvpn3-client/25+dfsg-3+b1 overridden dbus-policy-excessively-broad 5 <policy context="default"><allow send_path="/net/openvpn/v3/sessions" send_interface="org.freedesktop.DBus.Properties" send_type="method_call" send_member="Get"/> [usr/share/dbus-1/system.d/net.openvpn.v3.sessions.conf:23]
openvpn3-client 25+dfsg-3 openvpn3-client/25+dfsg-3+b1 overridden dbus-policy-excessively-broad 5 <policy user="_openvpn"><allow send_interface="org.freedesktop.DBus.Properties" send_type="method_call" send_member="GetAll"/> [usr/share/dbus-1/system.d/net.openvpn.v3.conf:3]
openvpn3-client 25+dfsg-3 openvpn3-client/25+dfsg-3+b1 overridden dbus-policy-excessively-broad 5 <policy user="_openvpn"><allow send_interface="org.freedesktop.DBus.Properties" send_type="method_call" send_member="Get"/> [usr/share/dbus-1/system.d/net.openvpn.v3.conf:1]
openvpn3-client 25+dfsg-3 openvpn3-client/25+dfsg-3+b1 overridden dbus-policy-excessively-broad 5 <policy user="_openvpn"><allow send_interface="org.freedesktop.DBus.Properties" send_type="method_call" send_member="Set"/> [usr/share/dbus-1/system.d/net.openvpn.v3.conf:2]
openvpn3-client 25+dfsg-4 openvpn3-client/25+dfsg-4 overridden dbus-policy-excessively-broad 6 <policy context="default"><allow send_path="/net/openvpn/v3/configuration" send_interface="org.freedesktop.DBus.Properties" send_type="method_call" send_member="Get"/> [usr/share/dbus-1/system.d/net.openvpn.v3.configuration.conf:22]
openvpn3-client 25+dfsg-4 openvpn3-client/25+dfsg-4 overridden dbus-policy-excessively-broad 6 <policy context="default"><allow send_path="/net/openvpn/v3/sessions" send_interface="org.freedesktop.DBus.Properties" send_type="method_call" send_member="Get"/> [usr/share/dbus-1/system.d/net.openvpn.v3.sessions.conf:23]
openvpn3-client 25+dfsg-4 openvpn3-client/25+dfsg-4 overridden dbus-policy-excessively-broad 6 <policy user="_openvpn"><allow send_interface="org.freedesktop.DBus.Properties" send_type="method_call" send_member="GetAll"/> [usr/share/dbus-1/system.d/net.openvpn.v3.conf:3]
openvpn3-client 25+dfsg-4 openvpn3-client/25+dfsg-4 overridden dbus-policy-excessively-broad 6 <policy user="_openvpn"><allow send_interface="org.freedesktop.DBus.Properties" send_type="method_call" send_member="Get"/> [usr/share/dbus-1/system.d/net.openvpn.v3.conf:1]
openvpn3-client 25+dfsg-4 openvpn3-client/25+dfsg-4 overridden dbus-policy-excessively-broad 6 <policy user="_openvpn"><allow send_interface="org.freedesktop.DBus.Properties" send_type="method_call" send_member="Set"/> [usr/share/dbus-1/system.d/net.openvpn.v3.conf:2]