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

High Nessus Plugin ID 79041


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


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.


Update the affected packages.

See Also




Plugin Details

Severity: High

ID: 79041

File Name: redhat-RHSA-2014-1076.nasl

Version: $Revision: 1.7 $

Type: local

Agent: unix

Published: 2014/11/08

Modified: 2017/01/06

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:qemu-img-rhev, p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev, p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev-debuginfo, p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev-tools, cpe:/o:redhat:enterprise_linux:6

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2014/08/19

Reference Information

CVE: CVE-2014-0222, CVE-2014-0223

BID: 67357, 67391

OSVDB: 106983

RHSA: 2014:1076