Synopsis

Important: qemu-kvm-rhev security update

Type/Severity

Security Advisory: Important

Topic

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.

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.

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

Affected Products

• Red Hat OpenStack 6.0 x86_64
• Red Hat OpenStack 5.0 for RHEL 7 x86_64

Fixes

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

CVEs

• CVE-2015-5154
• CVE-2015-3214

References

• https://access.redhat.com/security/updates/classification/#important

Red Hat OpenStack 6.0

SRPM
x86_64
libcacard-devel-rhev-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: be586b9ec597f13113e7e45bcfd62f5133859fe8729636fd56900815a4bc0d5c
libcacard-rhev-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: b64cab66f18245f5ff32faa5970dc0e460e839de1c2efe5564e33f57723a1866
libcacard-tools-rhev-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: 3977e0cc19f37fa948b76cdd1d27e46dfd8fd09cafdf2e1afad2f158dfbf28bc
qemu-img-rhev-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: 95861be5a495d6a7571b3ab939151be3818651fdd15200d0b2e07821961c67f8
qemu-kvm-common-rhev-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: caefb2808458277f8dfb0bbbd13214f9e90266e3128f4d4aa185ab2aa7d30195
qemu-kvm-rhev-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: db1daea9160f9b6d0664e241f89e52938eba908c7b7df920ff19bbee252a0129
qemu-kvm-rhev-debuginfo-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: 4a325230a8952b3fe193a39ec4065f1ebc347097bfa153595cd7552b510b03f3
qemu-kvm-tools-rhev-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: 60f8139e7ed8038a830e6ca48b28b2bb1c6acdf59585de097fe21171c897ec42

Red Hat OpenStack 5.0 for RHEL 7

SRPM
x86_64
libcacard-devel-rhev-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: be586b9ec597f13113e7e45bcfd62f5133859fe8729636fd56900815a4bc0d5c
libcacard-rhev-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: b64cab66f18245f5ff32faa5970dc0e460e839de1c2efe5564e33f57723a1866
libcacard-tools-rhev-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: 3977e0cc19f37fa948b76cdd1d27e46dfd8fd09cafdf2e1afad2f158dfbf28bc
qemu-img-rhev-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: 95861be5a495d6a7571b3ab939151be3818651fdd15200d0b2e07821961c67f8
qemu-kvm-common-rhev-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: caefb2808458277f8dfb0bbbd13214f9e90266e3128f4d4aa185ab2aa7d30195
qemu-kvm-rhev-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: db1daea9160f9b6d0664e241f89e52938eba908c7b7df920ff19bbee252a0129
qemu-kvm-rhev-debuginfo-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: 4a325230a8952b3fe193a39ec4065f1ebc347097bfa153595cd7552b510b03f3
qemu-kvm-tools-rhev-2.1.2-23.el7_1.6.x86_64.rpm	SHA-256: 60f8139e7ed8038a830e6ca48b28b2bb1c6acdf59585de097fe21171c897ec42