Bug 146765

Summary:	CAN-2005-0201 dbus information leak
Product:	[Fedora] Fedora	Reporter:	Josh Bressers <bressers>
Component:	dbus	Assignee:	John (J5) Palmieri <johnp>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	low	Docs Contact:
Priority:	medium
Version:	3	CC:	jkeck
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:	impact=low,public=20050131,source=redhat
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2005-02-03 21:16:14 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Josh Bressers 2005-02-01 14:47:22 UTC

This text was stolen from the freedesktop bugzilla
https://bugs.freedesktop.org/show_bug.cgi?id=2436


If I login as root and create a session bus, then login as another user, I am
able to use dbus-send to connect to root's session bus.

To reproduce:
Login as root, open a terminal, echo $DBUS_SESSION_BUS_ADDRESS, write down the
address.
Run dbus-monitor --session

Login as another user on a console, run:
env DBUS_SESSION_BUS_ADDRESS=(address written down above) dbus-send
--dest=org.freedesktop.DBus --type=method_call --print-reply
/org/freedesktop/DBus org.freedesktop.DBus.ListServices

The dbus-send gives a message about not being able to print the return value,
and the dbus-monitor on root's session bus shows the ListServices request coming
through.

A patch exists in the upstream bugzilla.

Comment 1 Josh Bressers 2005-02-01 14:48:42 UTC

John, can you virify this note sent by Havoc

    Note that this only affects the per-user session bus. Right now I think
    we only use that for printing. So the impact is you could use this bug
    to print jobs as another user or view someone's jobs. This would not
    affect HAL or anything like that.

Comment 2 John (J5) Palmieri 2005-02-01 16:47:05 UTC

verified.  Worst that can happen is another user sends signals that print jobs
have been started or canceled (Note this is only for notification.  Other users
can not control the print queue).  Disconnected signals are stopped at the bus
so there is no way to make eggcups crash.  Other than that there are currently
no other services that use the session bus.  I have RHEL-4, FC-3 and rawhide
patched on my local machine.  Risk is low.  I am going to start filling out errata.

Comment 3 John (J5) Palmieri 2005-02-03 21:16:14 UTC

Fix went through Fedora Update procedure