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Red Hat Enterprise Linux RHSA-2011:0376-01 Moderate Dbus DoS

red hat
Calendar Grey March 22, 2011
Dist Redhat Esm H88
Recent dbus updates for Red Hat address a denial of service vulnerability. Safeguard your system with this important advisory.
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 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.

Topics%20covered

Topics Covered

security advisory moderate denial of service security update package update red hat enterprise linux dbus

References

https://access.redhat.com/security/cve/CVE-2010-4352 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
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:
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:
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

Read the Full Advisory


Advisory ID: RHSA-2011:0376-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2011:0376.html
Issue date: 2011-03-22

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 moderate denial of service security update package update red hat enterprise linux dbus

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

663673 - CVE-2010-4352 D-BUS: Stack overflow by validating message with excessive number of nested variants

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