Bug 719694

Summary:	dbus: Local DoS via messages with non-native byte order
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED DUPLICATE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	davidz, lpoetter, rhughes, walters, walters
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-07-07 17:13:10 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 Jan Lieskovsky 2011-07-07 17:08:38 UTC

It was found that D-BUS message bus service / messaging facility did not update
the byte-order flag of the message properly by swapping the byte order of incoming
messages into their native endiannes. A local, authenticated user could use this
flaw to send a specially-crafted message to a system service (like Avahi
or NetworkManager), using the system bus, potentially leading to disconnect of
such a service from system bus (denial of service).

References:
[1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629938
[2] https://bugs.freedesktop.org/show_bug.cgi?id=38120

Upstream patches:
[3] http://cgit.freedesktop.org/dbus/dbus/commit/?h=dbus-1.2&id=6519a1f77c61d753d4c97efd6e15630eb275336e
    (in upstream v1.2.28 version)
[4] http://cgit.freedesktop.org/dbus/dbus/commit/?h=dbus-1.4&id=c3223ba6c401ba81df1305851312a47c485e6cd7
    (in upstream v1.4.12 version)

Comment 1 Jan Lieskovsky 2011-07-07 17:13:10 UTC


*** This bug has been marked as a duplicate of bug 712676 ***