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Red Hat Security Advisory 2012-1505-01

Red Hat Security Advisory 2012-1505-01
Posted Dec 4, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1505-01 - The rhev-hypervisor6 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine hypervisor. It includes everything necessary to run and manage virtual machines: A subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent. Note: Red Hat Enterprise Virtualization Hypervisor is only available for the Intel 64 and AMD64 architectures with virtualization extensions. A flaw was found in the way Red Hat Enterprise Virtualization Hypervisor hosts were added to the Red Hat Enterprise Virtualization environment. The Python scripts needed to configure the host for Red Hat Enterprise Virtualization were downloaded in an insecure way, that is, without properly validating SSL certificates during HTTPS connections. An attacker on the local network could use this flaw to conduct a man-in-the-middle attack, potentially gaining root access to the host being added to the Red Hat Enterprise Virtualization environment. This update provides the VDSM part of the fix. The RHSA-2012:1506 Red Hat Enterprise Virtualization Manager update must also be installed to completely fix this issue.

tags | advisory, web, kernel, local, root, python
systems | linux, redhat
advisories | CVE-2012-0861
MD5 | f9e212942c2ebf6a7220b0a84f50196e

Red Hat Security Advisory 2012-1505-01

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

Synopsis: Important: rhev-hypervisor6 security, bug fix, and enhancement update
Advisory ID: RHSA-2012:1505-01
Product: Red Hat Enterprise Virtualization
Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-1505.html
Issue date: 2012-12-04
CVE Names: CVE-2012-0861
=====================================================================

1. Summary:

An updated rhev-hypervisor6 package that fixes one security issue, various
bugs, and adds enhancements is now available.

The Red Hat Security Response Team has rated this update as having
important security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from the
CVE link in the References section.

2. Relevant releases/architectures:

RHEV Hypervisor for RHEL-6 - noarch

3. Description:

The rhev-hypervisor6 package provides a Red Hat Enterprise Virtualization
Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor
is a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes
everything necessary to run and manage virtual machines: A subset of the
Red Hat Enterprise Linux operating environment and the Red Hat Enterprise
Virtualization Agent.

Note: Red Hat Enterprise Virtualization Hypervisor is only available for
the Intel 64 and AMD64 architectures with virtualization extensions.

A flaw was found in the way Red Hat Enterprise Virtualization Hypervisor
hosts were added to the Red Hat Enterprise Virtualization environment. The
Python scripts needed to configure the host for Red Hat Enterprise
Virtualization were downloaded in an insecure way, that is, without
properly validating SSL certificates during HTTPS connections. An attacker
on the local network could use this flaw to conduct a man-in-the-middle
attack, potentially gaining root access to the host being added to the Red
Hat Enterprise Virtualization environment. This update provides the VDSM
part of the fix. The RHSA-2012:1506 Red Hat Enterprise Virtualization
Manager update must also be installed to completely fix this issue.
(CVE-2012-0861)

The CVE-2012-0861 issue was discovered by Red Hat.

This updated package provides updated components that include a fix for one
security issue. This issue had no security impact on Red Hat Enterprise
Virtualization Hypervisor itself, however. The security fix included in
this update addresses the following CVE number:

CVE-2012-0860 (VDSM issue)

This updated Red Hat Enterprise Virtualization Hypervisor package also
fixes the following bug:

* This update adds Hypervisor support for use in Red Hat Enterprise
Virtualization 3.1 compatible clusters. (BZ#846811)

This update includes:

* A fence-agents bug fix update (RHBA-2012:1439).
https://rhn.redhat.com/errata/RHBA-2012-1439.html

* An ovirt-node bug fix update (RHBA-2012:1500).
https://rhn.redhat.com/errata/RHBA-2012-1500.html

* A libvirt bug fix update (RHBA-2012:1501).
https://rhn.redhat.com/errata/RHBA-2012-1501.html

* A sanlock bug fix and enhancement update (RHBA-2012:1507).
https://rhn.redhat.com/errata/RHBA-2012-1507.html

* An important vdsm security and enhancement update (RHSA-2012:1508).
https://rhn.redhat.com/errata/RHBA-2012-1508.html

* A qemu-kvm-rhev bug fix update (RHBA-2012:1510).
https://rhn.redhat.com/errata/RHBA-2012-1510.html

Users of the Red Hat Enterprise Virtualization Hypervisor are advised to
upgrade to this updated package, which includes these security updates, bug
fixes and enhancements.

4. Solution:

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

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

To upgrade Hypervisors in Red Hat Enterprise Virtualization
environments using the disk image provided by this package, refer to:

https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Enterprise_Virtualization_Hypervisors.html

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

790754 - CVE-2012-0861 rhev: vds_installer is prone to MITM when downloading 2nd stage installer

6. Package List:

RHEV Hypervisor for RHEL-6:

noarch:
rhev-hypervisor6-6.3-20121121.0.el6_3.noarch.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/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2012-0861.html
https://access.redhat.com/security/updates/classification/#important
https://rhn.redhat.com/errata/RHBA-2012-1439.html
https://rhn.redhat.com/errata/RHBA-2012-1500.html
https://rhn.redhat.com/errata/RHBA-2012-1501.html
https://rhn.redhat.com/errata/RHBA-2012-1507.html
https://rhn.redhat.com/errata/RHBA-2012-1508.html
https://rhn.redhat.com/errata/RHBA-2012-1510.html
https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Enterprise_Virtualization_Hypervisors.html

8. Contact:

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

Copyright 2012 Red Hat, Inc.
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