RHEL 6 : rhev-hypervisor6 (RHSA-2012:0422)

This script is Copyright (C) 2014-2017 Tenable Network Security, Inc.


Synopsis :

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

Description :

An updated rhev-hypervisor6 package that fixes two security issues and
one bug is now available.

The Red Hat Security Response Team has rated this update as having
moderate security impact. Common Vulnerability Scoring System (CVSS)
base scores, which give detailed severity ratings, are available for
each vulnerability from the CVE links in the References section.

The rhev-hypervisor6 package provides a Red Hat Enterprise
Virtualization Hypervisor ISO disk image. The Red Hat Enterprise
Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine
(KVM) hypervisor. It includes everything necessary to run and manage
virtual machines: A subset of the Red Hat Enterprise Linux operating
environment and the Red Hat Enterprise Virtualization Agent.

Note: Red Hat Enterprise Virtualization Hypervisor is only available
for the Intel 64 and AMD64 architectures with virtualization
extensions.

A flaw was found in the way the Linux kernel's KVM hypervisor
implementation emulated the syscall instruction for 32-bit guests. An
unprivileged guest user could trigger this flaw to crash the guest.
(CVE-2012-0045)

A divide-by-zero flaw was found in the Linux kernel's
igmp_heard_query() function. An attacker able to send certain IGMP
(Internet Group Management Protocol) packets to a target system could
use this flaw to cause a denial of service. (CVE-2012-0207)

Red Hat would like to thank Stephan Barwolf for reporting
CVE-2012-0045, and Simon McVittie for reporting CVE-2012-0207.

This updated package provides updated components that include fixes
for various security issues. These issues have no security impact on
Red Hat Enterprise Virtualization Hypervisor itself, however. The
security fixes included in this update address the following CVE
numbers :

CVE-2011-4077, CVE-2011-4081, CVE-2011-4132, CVE-2011-4347,
CVE-2011-4594, CVE-2011-4611, CVE-2011-4622 and CVE-2012-0038 (kernel
issues)

CVE-2012-0444 (libvorbis issue)

CVE-2012-0841 (libxml2 issue)

This update also fixes the following bug :

* The rhev-hypervisor5 and rhev-hypervisor6 packages sometimes updated
the symbolic links in the /usr/share/rhev-hypervisor/ directory with
incorrect targets. The packages have been updated, they now always
update the symbolic links with the correct targets. (BZ#784706)

Users of Red Hat Enterprise Virtualization Hypervisor are advised to
upgrade to this updated package, which fixes these issues.

See also :

https://www.redhat.com/security/data/cve/CVE-2012-0045.html
https://www.redhat.com/security/data/cve/CVE-2012-0207.html
http://rhn.redhat.com/errata/RHSA-2012-0422.html

Solution :

Update the affected rhev-hypervisor6 and / or rhev-hypervisor6-tools
packages.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 6.1
(CVSS2#E:POC/RL:OF/RC:C)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 79285 ()

Bugtraq ID: 51343
51389

CVE ID: CVE-2012-0045
CVE-2012-0207

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