what you don't know can hurt you

Red Hat Security Advisory 2015-1508-01

Red Hat Security Advisory 2015-1508-01
Posted Jul 27, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-1508-01 - KVM 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.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2015-3214, CVE-2015-5154
MD5 | f7f084960283f82b135a35820de51491

Red Hat Security Advisory 2015-1508-01

Change Mirror Download
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
Red Hat Security Advisory

Synopsis: Important: qemu-kvm-rhev security update
Advisory ID: RHSA-2015:1508-01
Product: Red Hat Enterprise Virtualization
Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1508.html
Issue date: 2015-07-27
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 Virtualization Hypervisor 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:

RHEV-H and VDSM for 7 Hosts - 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:

RHEV-H and VDSM for 7 Hosts:

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.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1

iD8DBQFVtjRUXlSAg2UNWIIRArvIAKCCOnHT+kPU47ecjDOYpaS0OlmdPgCgtFTv
ouAIFEo562CLmJA2nBzFKeE=
=JVdM
-----END PGP SIGNATURE-----


--
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

January 2019

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Jan 1st
    15 Files
  • 2
    Jan 2nd
    15 Files
  • 3
    Jan 3rd
    11 Files
  • 4
    Jan 4th
    1 Files
  • 5
    Jan 5th
    2 Files
  • 6
    Jan 6th
    5 Files
  • 7
    Jan 7th
    24 Files
  • 8
    Jan 8th
    15 Files
  • 9
    Jan 9th
    16 Files
  • 10
    Jan 10th
    23 Files
  • 11
    Jan 11th
    17 Files
  • 12
    Jan 12th
    3 Files
  • 13
    Jan 13th
    2 Files
  • 14
    Jan 14th
    18 Files
  • 15
    Jan 15th
    33 Files
  • 16
    Jan 16th
    23 Files
  • 17
    Jan 17th
    15 Files
  • 18
    Jan 18th
    0 Files
  • 19
    Jan 19th
    0 Files
  • 20
    Jan 20th
    0 Files
  • 21
    Jan 21st
    0 Files
  • 22
    Jan 22nd
    0 Files
  • 23
    Jan 23rd
    0 Files
  • 24
    Jan 24th
    0 Files
  • 25
    Jan 25th
    0 Files
  • 26
    Jan 26th
    0 Files
  • 27
    Jan 27th
    0 Files
  • 28
    Jan 28th
    0 Files
  • 29
    Jan 29th
    0 Files
  • 30
    Jan 30th
    0 Files
  • 31
    Jan 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2019 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close