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Liebe Kolleginnen und Kollegen,
soeben erreichte uns nachfolgendes RedHat Security Advisory. Wir geben
diese Informationen unveraendert an Sie weiter.
Das D-Bus Nachrichtenformat bietet vier verschiedene Container Typen:
array, structure, dictionary entry und variant. Die Spezifikation des
Formats verbietet fuer die ersten drei eine Verschachtelungstiefe
groesser 32, bei letzterer ist diese jedoch nur durch die
Nachrichtengroesse begrenzt.
CVE-2010-4352 – Schwachstelle in D-Bus vor Version 1.4.1
In D-Bus vor Version 1.4.1 werden Nachrichten in unsicherer Weise
behandelt. Eine D-Bus Nachricht wird bei Empfang mit libdbus validiert,
wobei alle Varianten in der Nachricht rekursiv geprueft werden. Sind zu
viele Varianten vorhanden, steigt entsprechend die Rekursionstiefe, ein
Overflow im Call-Stack tritt auf und der Prozess bricht mit einer
Speicherschutzverletzung ab. Ein lokaler Angreifer kann diese
Schwachstelle ausnutzen, um D-Bus und ggf. alle Anwendungen, die diesen
Dienst verwenden, zum Absturz zu bringen.
Betroffen sind die folgenden Software Pakete und Plattformen:
Paket dbus
RHEL Desktop Workstation (v. 5 client) – i386, x86_64
Red Hat Enterprise Linux (v. 5 server) – i386, ia64, ppc, s390x,
x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) – i386, x86_64
Red Hat Enterprise Linux Desktop (v. 6) – i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) – i386, noarch,
x86_64
Red Hat Enterprise Linux HPC Node (v. 6) – x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) – noarch, x86_64
Red Hat Enterprise Linux Server (v. 6) – i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) – noarch
Red Hat Enterprise Linux Workstation (v. 6) – i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) – noarch
Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.
(c) der deutschen Zusammenfassung bei DFN-CERT Services GmbH; die
Verbreitung, auch auszugsweise, ist nur unter Hinweis auf den Urheber,
DFN-CERT Services GmbH, und nur zu nicht kommerziellen Zwecken
gestattet.
Mit freundlichen Gruessen,
Matthias Braeck
– —
Matthias Braeck (Incident Response Team)
DFN-CERT Services GmbH, https://www.dfn-cert.de, Phone +49 40 808077-590
Sitz / Register: Hamburg, AG Hamburg, HRB 88805, Ust-IdNr.: DE 232129737
Sachsenstrasse 5, 20097 Hamburg/Germany, CEO: Dr. Klaus-Peter Kossakowski
Automatische Warnmeldungen: https://www.cert.dfn.de/autowarn
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=====================================================================
Red Hat Security Advisory
Synopsis: Moderate: dbus security update
Advisory ID: RHSA-2011:0376-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-0376.html
Issue date: 2011-03-22
CVE Names: CVE-2010-4352
=====================================================================
1. Summary:
Updated dbus packages that fix one security issue are now available for Red
Hat Enterprise Linux 5 and 6.
The Red Hat Security Response Team has rated this update as having moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.
2. Relevant releases/architectures:
RHEL Desktop Workstation (v. 5 client) – i386, x86_64
Red Hat Enterprise Linux (v. 5 server) – i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) – i386, x86_64
Red Hat Enterprise Linux Desktop (v. 6) – i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) – i386, noarch, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) – x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) – noarch, x86_64
Red Hat Enterprise Linux Server (v. 6) – i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) – noarch
Red Hat Enterprise Linux Workstation (v. 6) – i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) – noarch
3. Description:
D-Bus is a system for sending messages between applications. It is used for
the system-wide message bus service and as a per-user-login-session
messaging facility.
A denial of service flaw was discovered in the system for sending messages
between applications. A local user could send a message with an excessive
number of nested variants to the system-wide message bus, causing the
message bus (and, consequently, any process using libdbus to receive
messages) to abort. (CVE-2010-4352)
All users are advised to upgrade to these updated packages, which contain a
backported patch to correct this issue. For the update to take effect, all
running instances of dbus-daemon and all running applications using the
libdbus library must be restarted, or the system rebooted.
4. Solution:
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
5. Bugs fixed (http://bugzilla.redhat.com/):
663673 – CVE-2010-4352 D-BUS: Stack overflow by validating message with excessive number of nested variants
6. Package List:
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/dbus-1.1.2-15.el5_6.src.rpm
i386:
dbus-1.1.2-15.el5_6.i386.rpm
dbus-debuginfo-1.1.2-15.el5_6.i386.rpm
dbus-libs-1.1.2-15.el5_6.i386.rpm
dbus-x11-1.1.2-15.el5_6.i386.rpm
x86_64:
dbus-1.1.2-15.el5_6.i386.rpm
dbus-1.1.2-15.el5_6.x86_64.rpm
dbus-debuginfo-1.1.2-15.el5_6.i386.rpm
dbus-debuginfo-1.1.2-15.el5_6.x86_64.rpm
dbus-libs-1.1.2-15.el5_6.i386.rpm
dbus-libs-1.1.2-15.el5_6.x86_64.rpm
dbus-x11-1.1.2-15.el5_6.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/dbus-1.1.2-15.el5_6.src.rpm
i386:
dbus-debuginfo-1.1.2-15.el5_6.i386.rpm
dbus-devel-1.1.2-15.el5_6.i386.rpm
x86_64:
dbus-debuginfo-1.1.2-15.el5_6.i386.rpm
dbus-debuginfo-1.1.2-15.el5_6.x86_64.rpm
dbus-devel-1.1.2-15.el5_6.i386.rpm
dbus-devel-1.1.2-15.el5_6.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/dbus-1.1.2-15.el5_6.src.rpm
i386:
dbus-1.1.2-15.el5_6.i386.rpm
dbus-debuginfo-1.1.2-15.el5_6.i386.rpm
dbus-devel-1.1.2-15.el5_6.i386.rpm
dbus-libs-1.1.2-15.el5_6.i386.rpm
dbus-x11-1.1.2-15.el5_6.i386.rpm
ia64:
dbus-1.1.2-15.el5_6.ia64.rpm
dbus-debuginfo-1.1.2-15.el5_6.ia64.rpm
dbus-devel-1.1.2-15.el5_6.ia64.rpm
dbus-libs-1.1.2-15.el5_6.ia64.rpm
dbus-x11-1.1.2-15.el5_6.ia64.rpm
ppc:
dbus-1.1.2-15.el5_6.ppc.rpm
dbus-1.1.2-15.el5_6.ppc64.rpm
dbus-debuginfo-1.1.2-15.el5_6.ppc.rpm
dbus-debuginfo-1.1.2-15.el5_6.ppc64.rpm
dbus-devel-1.1.2-15.el5_6.ppc.rpm
dbus-devel-1.1.2-15.el5_6.ppc64.rpm
dbus-libs-1.1.2-15.el5_6.ppc.rpm
dbus-libs-1.1.2-15.el5_6.ppc64.rpm
dbus-x11-1.1.2-15.el5_6.ppc.rpm
s390x:
dbus-1.1.2-15.el5_6.s390.rpm
dbus-1.1.2-15.el5_6.s390x.rpm
dbus-debuginfo-1.1.2-15.el5_6.s390.rpm
dbus-debuginfo-1.1.2-15.el5_6.s390x.rpm
dbus-devel-1.1.2-15.el5_6.s390.rpm
dbus-devel-1.1.2-15.el5_6.s390x.rpm
dbus-libs-1.1.2-15.el5_6.s390.rpm
dbus-libs-1.1.2-15.el5_6.s390x.rpm
dbus-x11-1.1.2-15.el5_6.s390x.rpm
x86_64:
dbus-1.1.2-15.el5_6.i386.rpm
dbus-1.1.2-15.el5_6.x86_64.rpm
dbus-debuginfo-1.1.2-15.el5_6.i386.rpm
dbus-debuginfo-1.1.2-15.el5_6.x86_64.rpm
dbus-devel-1.1.2-15.el5_6.i386.rpm
dbus-devel-1.1.2-15.el5_6.x86_64.rpm
dbus-libs-1.1.2-15.el5_6.i386.rpm
dbus-libs-1.1.2-15.el5_6.x86_64.rpm
dbus-x11-1.1.2-15.el5_6.x86_64.rpm
Red Hat Enterprise Linux Desktop (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/dbus-1.2.24-4.el6_0.src.rpm
i386:
dbus-1.2.24-4.el6_0.i686.rpm
dbus-debuginfo-1.2.24-4.el6_0.i686.rpm
dbus-libs-1.2.24-4.el6_0.i686.rpm
dbus-x11-1.2.24-4.el6_0.i686.rpm
x86_64:
dbus-1.2.24-4.el6_0.x86_64.rpm
dbus-debuginfo-1.2.24-4.el6_0.i686.rpm
dbus-debuginfo-1.2.24-4.el6_0.x86_64.rpm
dbus-libs-1.2.24-4.el6_0.i686.rpm
dbus-libs-1.2.24-4.el6_0.x86_64.rpm
dbus-x11-1.2.24-4.el6_0.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/dbus-1.2.24-4.el6_0.src.rpm
i386:
dbus-debuginfo-1.2.24-4.el6_0.i686.rpm
dbus-devel-1.2.24-4.el6_0.i686.rpm
noarch:
dbus-doc-1.2.24-4.el6_0.noarch.rpm
x86_64:
dbus-debuginfo-1.2.24-4.el6_0.i686.rpm
dbus-debuginfo-1.2.24-4.el6_0.x86_64.rpm
dbus-devel-1.2.24-4.el6_0.i686.rpm
dbus-devel-1.2.24-4.el6_0.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/dbus-1.2.24-4.el6_0.src.rpm
x86_64:
dbus-1.2.24-4.el6_0.x86_64.rpm
dbus-debuginfo-1.2.24-4.el6_0.i686.rpm
dbus-debuginfo-1.2.24-4.el6_0.x86_64.rpm
dbus-libs-1.2.24-4.el6_0.i686.rpm
dbus-libs-1.2.24-4.el6_0.x86_64.rpm
dbus-x11-1.2.24-4.el6_0.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/dbus-1.2.24-4.el6_0.src.rpm
noarch:
dbus-doc-1.2.24-4.el6_0.noarch.rpm
x86_64:
dbus-debuginfo-1.2.24-4.el6_0.i686.rpm
dbus-debuginfo-1.2.24-4.el6_0.x86_64.rpm
dbus-devel-1.2.24-4.el6_0.i686.rpm
dbus-devel-1.2.24-4.el6_0.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/dbus-1.2.24-4.el6_0.src.rpm
i386:
dbus-1.2.24-4.el6_0.i686.rpm
dbus-debuginfo-1.2.24-4.el6_0.i686.rpm
dbus-devel-1.2.24-4.el6_0.i686.rpm
dbus-libs-1.2.24-4.el6_0.i686.rpm
dbus-x11-1.2.24-4.el6_0.i686.rpm
ppc64:
dbus-1.2.24-4.el6_0.ppc64.rpm
dbus-debuginfo-1.2.24-4.el6_0.ppc.rpm
dbus-debuginfo-1.2.24-4.el6_0.ppc64.rpm
dbus-devel-1.2.24-4.el6_0.ppc.rpm
dbus-devel-1.2.24-4.el6_0.ppc64.rpm
dbus-libs-1.2.24-4.el6_0.ppc.rpm
dbus-libs-1.2.24-4.el6_0.ppc64.rpm
dbus-x11-1.2.24-4.el6_0.ppc64.rpm
s390x:
dbus-1.2.24-4.el6_0.s390x.rpm
dbus-debuginfo-1.2.24-4.el6_0.s390.rpm
dbus-debuginfo-1.2.24-4.el6_0.s390x.rpm
dbus-devel-1.2.24-4.el6_0.s390.rpm
dbus-devel-1.2.24-4.el6_0.s390x.rpm
dbus-libs-1.2.24-4.el6_0.s390.rpm
dbus-libs-1.2.24-4.el6_0.s390x.rpm
dbus-x11-1.2.24-4.el6_0.s390x.rpm
x86_64:
dbus-1.2.24-4.el6_0.x86_64.rpm
dbus-debuginfo-1.2.24-4.el6_0.i686.rpm
dbus-debuginfo-1.2.24-4.el6_0.x86_64.rpm
dbus-devel-1.2.24-4.el6_0.i686.rpm
dbus-devel-1.2.24-4.el6_0.x86_64.rpm
dbus-libs-1.2.24-4.el6_0.i686.rpm
dbus-libs-1.2.24-4.el6_0.x86_64.rpm
dbus-x11-1.2.24-4.el6_0.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/dbus-1.2.24-4.el6_0.src.rpm
noarch:
dbus-doc-1.2.24-4.el6_0.noarch.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/dbus-1.2.24-4.el6_0.src.rpm
i386:
dbus-1.2.24-4.el6_0.i686.rpm
dbus-debuginfo-1.2.24-4.el6_0.i686.rpm
dbus-devel-1.2.24-4.el6_0.i686.rpm
dbus-libs-1.2.24-4.el6_0.i686.rpm
dbus-x11-1.2.24-4.el6_0.i686.rpm
x86_64:
dbus-1.2.24-4.el6_0.x86_64.rpm
dbus-debuginfo-1.2.24-4.el6_0.i686.rpm
dbus-debuginfo-1.2.24-4.el6_0.x86_64.rpm
dbus-devel-1.2.24-4.el6_0.i686.rpm
dbus-devel-1.2.24-4.el6_0.x86_64.rpm
dbus-libs-1.2.24-4.el6_0.i686.rpm
dbus-libs-1.2.24-4.el6_0.x86_64.rpm
dbus-x11-1.2.24-4.el6_0.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/dbus-1.2.24-4.el6_0.src.rpm
noarch:
dbus-doc-1.2.24-4.el6_0.noarch.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package
7. References:
https://www.redhat.com/security/data/cve/CVE-2010-4352.html
https://access.redhat.com/security/updates/classification/#moderate
8. Contact:
The Red Hat security contact is
details at https://www.redhat.com/security/team/contact/
Copyright 2011 Red Hat, Inc.
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