This script is Copyright (C) 2012-2017 Tenable Network Security, Inc.
The remote Red Hat host is missing one or more security updates.
Updated libvirt packages that fix one security issue and two bugs are
now available for Red Hat Enterprise Linux 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.
The libvirt library is a C API for managing and interacting with the
virtualization capabilities of Linux and other operating systems. In
addition, libvirt provides tools for remote management of virtualized
A flaw was found in libvirtd's RPC call handling. An attacker able to
establish a read-only connection to libvirtd could trigger this flaw
with a specially crafted RPC command that has the number of parameters
set to 0, causing libvirtd to access invalid memory and crash.
This update also fixes the following bugs :
* Previously, repeatedly migrating a guest between two machines while
using the tunnelled migration could cause the libvirt daemon to lock
up unexpectedly. The bug in the code for locking remote drivers has
been fixed and repeated tunnelled migrations of domains now work as
* Previously, when certain system locales were used by the system,
libvirt could issue incorrect commands to the hypervisor. This bug has
been fixed and the libvirt library and daemon are no longer affected
by the choice of the user locale. (BZ#847959)
All users of libvirt are advised to upgrade to these updated packages,
which contain backported patches to correct these issues. After
installing the updated packages, libvirtd will be restarted
See also :
Update the affected packages.
Risk factor :
Low / CVSS Base Score : 3.5
CVSS Temporal Score : 2.6
Public Exploit Available : false