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

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