RHEL 5 / 6 : dbus (RHSA-2011:1132)

This script is Copyright (C) 2011-2014 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

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.

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.

See also :

https://www.redhat.com/security/data/cve/CVE-2011-2200.html
http://rhn.redhat.com/errata/RHSA-2011-1132.html

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 4.6
(CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 3.8
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 55809 ()

Bugtraq ID: 48216

CVE ID: CVE-2011-2200