Bug 712676 – CVE-2011-2200 dbus: Local DoS via messages with non-native byte order

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Bug 712676 - (CVE-2011-2200) CVE-2011-2200 dbus: Local DoS via messages with non-native byte order

Summary:	CVE-2011-2200 dbus: Local DoS via messages with non-native byte order

Status:	CLOSED ERRATA

Aliases:	CVE-2011-2200

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	public=20110609,reported=20110609,sou...
Keywords:	Security

Duplicates:	719694 (view as bug list)
Depends On:	833886 712678 725311 725312 725313 725314 844273
Blocks:	712679
	Show dependency tree / graph

Reported:	2011-06-12 08:36 EDT by Jan Lieskovsky
Modified:	2015-11-24 09:40 EST (History)
CC List:	5 users (show)

See Also:
Fixed In Version:	dbus 1.1.28, dbus 1.4.12, dbus 1.5.4
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2013-03-26 12:49:56 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
dbus test (8.56 KB, text/plain) 2011-07-22 06:24 EDT, Huzaifa S. Sidhpurwala	no flags	Details
patch against dbus-1.4.6-4 (1.30 KB, patch) 2011-07-22 06:46 EDT, Huzaifa S. Sidhpurwala	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2011:1132	normal	SHIPPED_LIVE	Moderate: dbus security update	2011-08-09 13:06:16 EDT

Groups: None (edit)

Description Jan Lieskovsky 2011-06-12 08:36:10 EDT

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 2011-06-12 08:41:07 EDT

This issue affect the versions of the dbus package, as shipped with
Red Hat Enterprise Linux 5 and 6.

--

This issue affects the versions of the dbus package, as shipped with
Fedora release of 13, 14, and 15. Please schedule an update.

Comment 2 Jan Lieskovsky 2011-06-12 08:53:56 EDT

Created dbus tracking bugs for this issue

Affects: fedora-all [bug 712678]

Comment 3 Jan Lieskovsky 2011-06-12 09:03:01 EDT

CVE Request:
[5] http://www.openwall.com/lists/oss-security/2011/06/12/1

Comment 4 Jan Lieskovsky 2011-06-14 06:20:57 EDT

The CVE identifier of CVE-2011-2200 has been assigned to this:
http://www.openwall.com/lists/oss-security/2011/06/13/12

Comment 5 Jan Lieskovsky 2011-07-07 13:13:10 EDT

*** Bug 719694 has been marked as a duplicate of this bug. ***

Comment 6 Huzaifa S. Sidhpurwala 2011-07-22 06:24:45 EDT

Created attachment 514650 [details]
dbus test

Comment 7 Huzaifa S. Sidhpurwala 2011-07-22 06:27:01 EDT

Comment #6 has an attached test program to check if the version of dbus is affected by the vuln.

To compile it use:
gcc -o marshal `pkg-config --cflags --libs glib-2.0 dbus-1` marshal.c

Running this on Fedora-15 with dbus-1.4.6-4.fc15.x86_64 we get:

[huzaifas@babylon test]$ ./marshal 
/demarshal/le: OK
/demarshal/be: **
ERROR:marshal.c:195:test_endian: assertion failed (get_uint32 (output, OFFSET_BODY_LENGTH, output[0]) == 8): (134217728 == 8)
Aborted (core dumped)


This shows that dbus-1.4.6 is affected.

Comment 8 Huzaifa S. Sidhpurwala 2011-07-22 06:46:24 EDT

Created attachment 514654 [details]
patch against dbus-1.4.6-4

Comment 9 Huzaifa S. Sidhpurwala 2011-07-22 06:47:18 EDT

After applying the patch in Comment #8:

[huzaifas@babylon test]$ ./marshal 
/demarshal/le: OK
/demarshal/be: OK
/demarshal/needed/le: OK
/demarshal/needed/be: OK

Comment 11 errata-xmlrpc 2011-08-09 13:06:26 EDT

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 5

Via RHSA-2011:1132 https://rhn.redhat.com/errata/RHSA-2011-1132.html

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