7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.002 Low
EPSS
Percentile
57.8%
CentOS Errata and Security Advisory CESA-2015:1507
KVM (Kernel-based Virtual Machine) is a full virtualization solution for
Linux on AMD64 and Intel 64 systems. The qemu-kvm 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.
This update also fixes the following bug:
All qemu-kvm users 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.
Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2015-July/083428.html
Affected packages:
libcacard
libcacard-devel
libcacard-tools
qemu-img
qemu-kvm
qemu-kvm-common
qemu-kvm-tools
Upstream details at:
https://access.redhat.com/errata/RHSA-2015:1507
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
CentOS | 7 | i686 | libcacard | < 1.5.3-86.el7_1.5 | libcacard-1.5.3-86.el7_1.5.i686.rpm |
CentOS | 7 | x86_64 | libcacard | < 1.5.3-86.el7_1.5 | libcacard-1.5.3-86.el7_1.5.x86_64.rpm |
CentOS | 7 | i686 | libcacard-devel | < 1.5.3-86.el7_1.5 | libcacard-devel-1.5.3-86.el7_1.5.i686.rpm |
CentOS | 7 | x86_64 | libcacard-devel | < 1.5.3-86.el7_1.5 | libcacard-devel-1.5.3-86.el7_1.5.x86_64.rpm |
CentOS | 7 | x86_64 | libcacard-tools | < 1.5.3-86.el7_1.5 | libcacard-tools-1.5.3-86.el7_1.5.x86_64.rpm |
CentOS | 7 | x86_64 | qemu-img | < 1.5.3-86.el7_1.5 | qemu-img-1.5.3-86.el7_1.5.x86_64.rpm |
CentOS | 7 | x86_64 | qemu-kvm | < 1.5.3-86.el7_1.5 | qemu-kvm-1.5.3-86.el7_1.5.x86_64.rpm |
CentOS | 7 | x86_64 | qemu-kvm-common | < 1.5.3-86.el7_1.5 | qemu-kvm-common-1.5.3-86.el7_1.5.x86_64.rpm |
CentOS | 7 | x86_64 | qemu-kvm-tools | < 1.5.3-86.el7_1.5 | qemu-kvm-tools-1.5.3-86.el7_1.5.x86_64.rpm |