exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

Red Hat Security Advisory 2017-1431-01

Red Hat Security Advisory 2017-1431-01
Posted Jun 13, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1431-01 - KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Security Fix: An out-of-bounds access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data using bitblt functions. A privileged user inside a guest could use this flaw to crash the QEMU process, resulting in denial of service.

tags | advisory, denial of service
systems | linux, redhat
advisories | CVE-2017-7718
SHA-256 | 929ce65d4b0f5d7e304b55344d092f6059ead134932603c82d068bb4c225a5db

Red Hat Security Advisory 2017-1431-01

Change Mirror Download

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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

Synopsis: Important: qemu-kvm-rhev security and bug fix update
Advisory ID: RHSA-2017:1431-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2017:1431
Issue date: 2017-06-13
CVE Names: CVE-2017-7718
=====================================================================

1. Summary:

An update for qemu-kvm-rhev is now available for RHEV 3.X Hypervisor and
Agents for RHEL-7 and RHEV 4.X RHEV-H and Agents for RHEL-7.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Managment Agent for RHEL 7 Hosts - ppc64le, x86_64
RHEV-H and VDSM for 7 Hosts - ppc64le, x86_64

3. Description:

KVM (Kernel-based Virtual Machine) is a full virtualization solution for
Linux on a variety of architectures. The qemu-kvm-rhev packages provide the
user-space component for running virtual machines that use KVM in
environments managed by Red Hat products.

Security Fix(es):

* An out-of-bounds access issue was found in QEMU's Cirrus CLGD 54xx VGA
Emulator support. The vulnerability could occur while copying VGA data
using bitblt functions (for example, cirrus_bitblt_rop_fwd_transp_). A
privileged user inside a guest could use this flaw to crash the QEMU
process, resulting in denial of service. (CVE-2017-7718)

Red Hat would like to thank Jiangxin (PSIRT Huawei Inc.) for reporting
CVE-2017-7718.

Bug Fix(es):

* When using post-copy migration with the virtio Random Number Generator
(RNG) device, virtio-rng continued generating data while the migration was
already in post-copy mode. Consequently, the migration sometimes failed and
the error message "Failed to load virtio-rng:virtio" was displayed. The
source code has been improved and the problem no longer occurs in the
scenario described. (BZ#1450375)

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

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

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.

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

1443441 - CVE-2017-7718 Qemu: display: cirrus: OOB read access issue
1450375 - Migration failed with postcopy enabled from rhel7.3.z host to rhel7.4 host "error while loading state for instance 0x0 of device 'pci@800000020000000:05.0/virtio-rng'"

6. Package List:

Managment Agent for RHEL 7 Hosts:

Source:
qemu-kvm-rhev-2.6.0-28.el7_3.10.src.rpm

ppc64le:
qemu-img-rhev-2.6.0-28.el7_3.10.ppc64le.rpm
qemu-kvm-common-rhev-2.6.0-28.el7_3.10.ppc64le.rpm
qemu-kvm-rhev-2.6.0-28.el7_3.10.ppc64le.rpm
qemu-kvm-rhev-debuginfo-2.6.0-28.el7_3.10.ppc64le.rpm
qemu-kvm-tools-rhev-2.6.0-28.el7_3.10.ppc64le.rpm

x86_64:
qemu-img-rhev-2.6.0-28.el7_3.10.x86_64.rpm
qemu-kvm-common-rhev-2.6.0-28.el7_3.10.x86_64.rpm
qemu-kvm-rhev-2.6.0-28.el7_3.10.x86_64.rpm
qemu-kvm-rhev-debuginfo-2.6.0-28.el7_3.10.x86_64.rpm
qemu-kvm-tools-rhev-2.6.0-28.el7_3.10.x86_64.rpm

RHEV-H and VDSM for 7 Hosts:

Source:
qemu-kvm-rhev-2.6.0-28.el7_3.10.src.rpm

ppc64le:
qemu-img-rhev-2.6.0-28.el7_3.10.ppc64le.rpm
qemu-kvm-common-rhev-2.6.0-28.el7_3.10.ppc64le.rpm
qemu-kvm-rhev-2.6.0-28.el7_3.10.ppc64le.rpm
qemu-kvm-rhev-debuginfo-2.6.0-28.el7_3.10.ppc64le.rpm
qemu-kvm-tools-rhev-2.6.0-28.el7_3.10.ppc64le.rpm

x86_64:
qemu-img-rhev-2.6.0-28.el7_3.10.x86_64.rpm
qemu-kvm-common-rhev-2.6.0-28.el7_3.10.x86_64.rpm
qemu-kvm-rhev-2.6.0-28.el7_3.10.x86_64.rpm
qemu-kvm-rhev-debuginfo-2.6.0-28.el7_3.10.x86_64.rpm
qemu-kvm-tools-rhev-2.6.0-28.el7_3.10.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-2017-7718
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 2017 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1

iD8DBQFZP6hTXlSAg2UNWIIRArT0AJ0Sc8IqdJ1M0FX4d7RFkFsTyNfuNQCfabGc
muD22oCkddUBURWbSZxU87E=
=wtk1
-----END PGP SIGNATURE-----

--
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce
Login or Register to add favorites

File Archive:

May 2024

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

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close