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Red Hat Enterprise Linux 5/6: RHSA-2011:1132-01 Moderate Denial Of Service

red hat
Calendar Grey August 9, 2011
Scroller Redhat Esm H88
A moderate security notification has been released concerning a dbus update for Red Hat Enterprise Linux aimed at resolving a denial of service vulnerability.
Updated dbus packages that fix one security issue are now available for Red Hat Enterprise Linux 5 and 6

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

Summary

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 found in the way the D-Bus library handled endianness conversion when receiving messages. A local user could use this flaw to send a specially-crafted message to dbus-daemon or to a service using the bus, such as Avahi or NetworkManager, possibly causing the daemon to exit or the service to disconnect from the bus. (CVE-2011-2200)
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.

Topics%20covered

Topics Covered

security advisory denial of service security issue moderate severity red hat enterprise dbus update

References

https://access.redhat.com/security/cve/CVE-2011-2200 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: dbus-1.1.2-16.el5_7.i386.rpm dbus-debuginfo-1.1.2-16.el5_7.i386.rpm dbus-libs-1.1.2-16.el5_7.i386.rpm dbus-x11-1.1.2-16.el5_7.i386.rpm
x86_64: dbus-1.1.2-16.el5_7.i386.rpm dbus-1.1.2-16.el5_7.x86_64.rpm dbus-debuginfo-1.1.2-16.el5_7.i386.rpm dbus-debuginfo-1.1.2-16.el5_7.x86_64.rpm dbus-libs-1.1.2-16.el5_7.i386.rpm dbus-libs-1.1.2-16.el5_7.x86_64.rpm dbus-x11-1.1.2-16.el5_7.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
i386: dbus-debuginfo-1.1.2-16.el5_7.i386.rpm dbus-devel-1.1.2-16.el5_7.i386.rpm
x86_64: dbus-debuginfo-1.1.2-16.el5_7.i386.rpm dbus-debuginfo-1.1.2-16.el5_7.x86_64.rpm dbus-devel-1.1.2-16.el5_7.i386.rpm dbus-devel-1.1.2-16.el5_7.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: dbus-1.1.2-16.el5_7.i386.rpm dbus-debuginfo-1.1.2-16.el5_7.i386.rpm dbus-devel-1.1.2-16.el5_7.i386.rpm dbus-libs-1.1.2-16.el5_7.i386.rpm dbus-x11-1.1.2-16.el5_7.i386.rpm
ia64: dbus-1.1.2-16.el5_7.ia64.rpm dbus-debuginfo-1.1.2-16.el5_7.ia64.rpm dbus-devel-1.1.2-16.el5_7.ia64.rpm dbus-libs-1.1.2-16.el5_7.ia64.rpm dbus-x11-1.1.2-16.el5_7.ia64.rpm
ppc: dbus-1.1.2-16.el5_7.ppc.rpm dbus-1.1.2-16.el5_7.ppc64.rpm dbus-debuginfo-1.1.2-16.el5_7.ppc.rpm dbus-debuginfo-1.1.2-16.el5_7.ppc64.rpm

Read the Full Advisory


Advisory ID: RHSA-2011:1132-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2011:1132.html
Issue date: 2011-08-09

Topic

Updated dbus packages that fix one security issue are now available for RedHat Enterprise Linux 5 and 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory denial of service security issue moderate severity red hat enterprise dbus update

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

Bugs Fixed

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

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