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

Synopsis:          Important: rhev-hypervisor6 security and bug fix update
Advisory ID:       RHSA-2013:0636-01
Product:           Red Hat Enterprise Virtualization
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2013-0636.html
Issue date:        2013-03-13
CVE Names:         CVE-2012-4929 CVE-2012-6075 CVE-2013-0166 
                   CVE-2013-0169 CVE-2013-1619 
=====================================================================

1. Summary:

An updated rhev-hypervisor6 package that fixes several security issues and
various bugs is now available.

The Red Hat Security Response Team 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 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 QEMU-KVM emulated the e1000 network interface
card when the host was configured to accept jumbo network frames, and a
guest using the e1000 emulated driver was not. A remote attacker could use
this flaw to crash the guest or, potentially, execute arbitrary code with
root privileges in the guest. (CVE-2012-6075)

It was discovered that GnuTLS leaked timing information when decrypting
TLS/SSL protocol encrypted records when CBC-mode cipher suites were used. A
remote attacker could possibly use this flaw to retrieve plain text from
the encrypted packets by using a TLS/SSL server as a padding oracle.
(CVE-2013-1619)

It was discovered that OpenSSL leaked timing information when decrypting
TLS/SSL and DTLS protocol encrypted records when CBC-mode cipher suites
were used. A remote attacker could possibly use this flaw to retrieve plain
text from the encrypted packets by using a TLS/SSL or DTLS server as a
padding oracle. (CVE-2013-0169)

A NULL pointer dereference flaw was found in the OCSP response verification
in OpenSSL. A malicious OCSP server could use this flaw to crash
applications performing OCSP verification by sending a specially-crafted
response. (CVE-2013-0166)

It was discovered that the TLS/SSL protocol could leak information about
plain text when optional compression was used. An attacker able to control
part of the plain text sent over an encrypted TLS/SSL connection could
possibly use this flaw to recover other portions of the plain text.
(CVE-2012-4929)

This updated package provides updated components that include fixes for
various security issues. These issues have no security impact on Red Hat
Enterprise Virtualization Hypervisor itself, however. The security fixes
included in this update address the following CVE numbers:

CVE-2013-0292 (dbus-glib issue)

CVE-2013-0228, CVE-2013-0268, and CVE-2013-0871 (kernel issues)

CVE-2013-0338 (libxml2 issue)

This update contains the builds from the following errata:

ovirt-node: RHBA-2013:0634
    https://rhn.redhat.com/errata/RHBA-2013-0634.html
kernel: RHSA-2013:0630
    https://rhn.redhat.com/errata/RHSA-2013-0630.html
dbus-glib: RHSA-2013:0568
    https://rhn.redhat.com/errata/RHSA-2013-0568.html
libcgroup: RHBA-2013:0560
    https://rhn.redhat.com/errata/RHBA-2013-0560.html
vdsm: RHBA-2013:0635
    https://rhn.redhat.com/errata/RHBA-2013-0635.html
selinux-policy: RHBA-2013:0618
    https://rhn.redhat.com/errata/RHBA-2013-0618.html
qemu-kvm-rhev: RHSA-2013:0610
    https://rhn.redhat.com/errata/RHSA-2013-0610.html
glusterfs: RHBA-2013:0620
    https://rhn.redhat.com/errata/RHBA-2013-0620.html
gnutls: RHSA-2013:0588
    https://rhn.redhat.com/errata/RHSA-2013-0588.html
ipmitool: RHBA-2013:0572
    https://rhn.redhat.com/errata/RHBA-2013-0572.html
libxml2: RHSA-2013:0581
    https://rhn.redhat.com/errata/RHSA-2013-0581.html
openldap: RHBA-2013:0598
    https://rhn.redhat.com/errata/RHBA-2013-0598.html
openssl: RHSA-2013:0587
    https://rhn.redhat.com/errata/RHSA-2013-0587.html

Users of the Red Hat Enterprise Virtualization Hypervisor are advised to
upgrade to this updated package, which fixes these issues.

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/h
tml/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Ent
erprise_Virtualization_Hypervisors.html

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

857051 - CVE-2012-4929 SSL/TLS CRIME attack against HTTPS
889301 - CVE-2012-6075 qemu: e1000 driver buffer overflow when processing large packets when SBP and LPE flags are disabled
907589 - CVE-2013-0169 SSL/TLS: CBC padding timing attack (lucky-13)
908052 - CVE-2013-0166 openssl: DoS due to improper handling of OCSP response verification
908238 - CVE-2013-1619 gnutls: TLS CBC padding timing attack (lucky-13)
913267 - rhev-hypervisor 6.4 Update 1 release

6. Package List:

RHEV Hypervisor for RHEL-6:

noarch:
rhev-hypervisor6-6.4-20130306.2.el6_4.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-2012-4929.html
https://www.redhat.com/security/data/cve/CVE-2012-6075.html
https://www.redhat.com/security/data/cve/CVE-2013-0166.html
https://www.redhat.com/security/data/cve/CVE-2013-0169.html
https://www.redhat.com/security/data/cve/CVE-2013-1619.html
https://access.redhat.com/security/updates/classification/#important
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 2013 Red Hat, Inc.
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