RHEL 6 : qemu-kvm-rhev (RHSA-2014:1076)

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 :

Updated qemu-kvm-rhev packages that fix two security issues and one
bug are now available for Red Hat Enterprise Virtualization.

Red Hat Product Security 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.

KVM (Kernel-based Virtual Machine) is a full virtualization solution
for Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package
provides the user-space component for running virtual machines using
KVM in environments managed by Red Hat Enterprise Virtualization
Manager.

Two integer overflow flaws were found in the QEMU block driver for
QCOW version 1 disk images. A user able to alter the QEMU disk image
files loaded by a guest could use either of these flaws to corrupt
QEMU process memory on the host, which could potentially result in
arbitrary code execution on the host with the privileges of the QEMU
process. (CVE-2014-0222, CVE-2014-0223)

Red Hat would like to thank NSA for reporting these issues.

This update also fixes the following bug :

* In certain scenarios, when performing live incremental migration,
the disk size could be expanded considerably due to the transfer of
unallocated sectors past the end of the base image. With this update,
the bdrv_is_allocated() function has been fixed to no longer return
'True' for unallocated sectors, and the disk size no longer changes
after performing live incremental migration. (BZ#1110681)

All users of qemu-kvm-rhev are advised to upgrade to these updated
packages, which contain backported patches to correct these issues.
After installing this update, shut down all running virtual machines.
Once all virtual machines have shut down, start them again for this
update to take effect.

See also :

https://www.redhat.com/security/data/cve/CVE-2014-0222.html
https://www.redhat.com/security/data/cve/CVE-2014-0223.html
http://rhn.redhat.com/errata/RHSA-2014-1076.html

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.5
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Red Hat Local Security Checks

Nessus Plugin ID: 79041 ()

Bugtraq ID: 67357
67391

CVE ID: CVE-2014-0222
CVE-2014-0223

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