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             AUSCERT External Security Bulletin Redistribution

                               ESB-2015.1970
                 Important: qemu-kvm-rhev security update
                               29 July 2015

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           qemu-kvm-rhev
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux Server 7
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2015-5154 CVE-2015-3214 

Reference:         ESB-2015.1960

Original Bulletin: 
   https://rhn.redhat.com/errata/RHSA-2015-1512.html

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                   Red Hat Security Advisory

Synopsis:          Important: qemu-kvm-rhev security update
Advisory ID:       RHSA-2015:1512-01
Product:           Red Hat Enterprise Linux OpenStack Platform
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2015-1512.html
Issue date:        2015-07-28
CVE Names:         CVE-2015-3214 CVE-2015-5154 
=====================================================================

1. Summary:

Updated qemu-kvm-rhev packages that fix two security issues are now
available for Red Hat Enterprise Linux OpenStack Platform 6 and Red Hat
Enterprise Linux OpenStack Platform 5 for RHEL 7.

Red Hat Product Security has rated this update as having Important 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux OpenStack Platform 5.0 for RHEL 7 - x86_64
Red Hat Enterprise Linux OpenStack Platform 6.0 for RHEL 7 - x86_64

3. Description:

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.

A heap buffer overflow flaw was found in the way QEMU's IDE subsystem
handled I/O buffer access while processing certain ATAPI commands.
A privileged guest user in a guest with the CDROM drive enabled could
potentially use this flaw to execute arbitrary code on the host with the
privileges of the host's QEMU process corresponding to the guest.
(CVE-2015-5154)

An out-of-bounds memory access flaw, leading to memory corruption or
possibly an information leak, was found in QEMU's pit_ioport_read()
function. A privileged guest user in a QEMU guest, which had QEMU PIT
emulation enabled, could potentially, in rare cases, use this flaw to
execute arbitrary code on the host with the privileges of the hosting QEMU
process. (CVE-2015-3214)

Red Hat would like to thank Matt Tait of Google's Project Zero security
team for reporting the CVE-2015-3214 issue. The CVE-2015-5154 issue was
discovered by Kevin Wolf of Red Hat.

All qemu-kvm-rhev users are advised to upgrade to these updated packages,
which contain a backported patch to correct this issue. 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.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1229640 - CVE-2015-3214 qemu/kvm: i8254: out-of-bounds memory access in pit_ioport_read function
1243563 - CVE-2015-5154 qemu: ide: atapi: heap overflow during I/O buffer memory access

6. Package List:

Red Hat Enterprise Linux OpenStack Platform 5.0 for RHEL 7:

Source:
qemu-kvm-rhev-2.1.2-23.el7_1.6.src.rpm

x86_64:
libcacard-devel-rhev-2.1.2-23.el7_1.6.x86_64.rpm
libcacard-rhev-2.1.2-23.el7_1.6.x86_64.rpm
libcacard-tools-rhev-2.1.2-23.el7_1.6.x86_64.rpm
qemu-img-rhev-2.1.2-23.el7_1.6.x86_64.rpm
qemu-kvm-common-rhev-2.1.2-23.el7_1.6.x86_64.rpm
qemu-kvm-rhev-2.1.2-23.el7_1.6.x86_64.rpm
qemu-kvm-rhev-debuginfo-2.1.2-23.el7_1.6.x86_64.rpm
qemu-kvm-tools-rhev-2.1.2-23.el7_1.6.x86_64.rpm

Red Hat Enterprise Linux OpenStack Platform 6.0 for RHEL 7:

Source:
qemu-kvm-rhev-2.1.2-23.el7_1.6.src.rpm

x86_64:
libcacard-devel-rhev-2.1.2-23.el7_1.6.x86_64.rpm
libcacard-rhev-2.1.2-23.el7_1.6.x86_64.rpm
libcacard-tools-rhev-2.1.2-23.el7_1.6.x86_64.rpm
qemu-img-rhev-2.1.2-23.el7_1.6.x86_64.rpm
qemu-kvm-common-rhev-2.1.2-23.el7_1.6.x86_64.rpm
qemu-kvm-rhev-2.1.2-23.el7_1.6.x86_64.rpm
qemu-kvm-rhev-debuginfo-2.1.2-23.el7_1.6.x86_64.rpm
qemu-kvm-tools-rhev-2.1.2-23.el7_1.6.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2015-3214
https://access.redhat.com/security/cve/CVE-2015-5154
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2015 Red Hat, Inc.
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