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Test ID:1.3.6.1.4.1.25623.1.0.871115
Category:Red Hat Local Security Checks
Title:RedHat Update for libvirt RHSA-2014:0103-01
Summary:The remote host is missing an update for the 'libvirt'; package(s) announced via the referenced advisory.
Description:Summary:
The remote host is missing an update for the 'libvirt'
package(s) announced via the referenced advisory.

Vulnerability Insight:
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 systems.

A use-after-free flaw was found in the way several libvirt block APIs
handled domain jobs. A remote attacker able to establish a read-only
connection to libvirtd could use this flaw to crash libvirtd or,
potentially, execute arbitrary code with the privileges of the libvirtd
process (usually root). (CVE-2013-6458)

A race condition was found in the way libvirtd handled keepalive
initialization requests when the connection was closed prior to
establishing connection credentials. An attacker able to establish a
read-only connection to libvirtd could use this flaw to crash libvirtd,
resulting in a denial of service. (CVE-2014-1447)

This update also fixes the following bug:

* A race condition was possible between a thread starting a virtual machine
with a guest agent configured (regular start-up or while migrating) and a
thread that was killing the VM process (or the process crashing). The race
could cause the monitor object to be freed by the thread that killed the VM
process, which was later accessed by the thread that was attempting to
start the VM, resulting in a crash. This issue was fixed by checking the
state of the VM after the attempted connection to the guest agent if the
VM in the meantime exited, no other operations are attempted. (BZ#1055578)

All libvirt users 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 automatically.

Affected Software/OS:
libvirt on Red Hat Enterprise Linux Desktop (v. 6),
Red Hat Enterprise Linux Server (v. 6),
Red Hat Enterprise Linux Workstation (v. 6)

Solution:
Please Install the Updated Packages.

CVSS Score:
6.8

CVSS Vector:
AV:A/AC:H/Au:N/C:C/I:C/A:C

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2013-6458
Debian Security Information: DSA-2846 (Google Search)
http://www.debian.org/security/2014/dsa-2846
http://security.gentoo.org/glsa/glsa-201412-04.xml
RedHat Security Advisories: RHSA-2014:0103
http://rhn.redhat.com/errata/RHSA-2014-0103.html
http://secunia.com/advisories/56186
http://secunia.com/advisories/56446
http://secunia.com/advisories/60895
SuSE Security Announcement: openSUSE-SU-2014:0268 (Google Search)
http://lists.opensuse.org/opensuse-updates/2014-02/msg00060.html
SuSE Security Announcement: openSUSE-SU-2014:0270 (Google Search)
http://lists.opensuse.org/opensuse-updates/2014-02/msg00062.html
http://www.ubuntu.com/usn/USN-2093-1
Common Vulnerability Exposure (CVE) ID: CVE-2014-1447
http://www.securitytracker.com/id/1029695
http://secunia.com/advisories/56321
CopyrightCopyright (C) 2014 Greenbone Networks GmbH

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