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Red Hat Product Errata RHSA-2014:0339 - Security Advisory
Issued:
2014-03-31
Updated:
2014-03-31

RHSA-2014:0339 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: rhev-hypervisor6 security update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An updated rhev-hypervisor6 package that fixes multiple security issues 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.

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.

It was discovered that GnuTLS did not correctly handle certain errors that
could occur during the verification of an X.509 certificate, causing it to
incorrectly report a successful verification. An attacker could use this
flaw to create a specially crafted certificate that could be accepted by
GnuTLS as valid for a site chosen by the attacker. (CVE-2014-0092)

A flaw was found in the way the get_rx_bufs() function in the vhost_net
implementation in the Linux kernel handled error conditions reported by the
vhost_get_vq_desc() function. A privileged guest user could use this flaw
to crash the host. (CVE-2014-0055)

A heap-based buffer overflow flaw was found in the Linux kernel's cdc-wdm
driver, used for USB CDC WCM device management. An attacker with physical
access to a system could use this flaw to cause a denial of service or,
potentially, escalate their privileges. (CVE-2013-1860)

The CVE-2014-0092 issue was discovered by Nikos Mavrogiannopoulos of the
Red Hat Security Technologies Team.

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-2014-0101, and CVE-2014-0069 (kernel issues)

CVE-2010-2596, CVE-2013-1960, CVE-2013-1961, CVE-2013-4231, CVE-2013-4232,
CVE-2013-4243, and CVE-2013-4244 (libtiff issues)

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

Solution

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/site/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/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Enterprise_Virtualization_Hypervisors.html

Affected Products

  • Red Hat Virtualization 6 x86_64

Fixes

  • BZ - 921970 - CVE-2013-1860 kernel: usb: cdc-wdm buffer overflow triggered by device
  • BZ - 1062577 - CVE-2014-0055 kernel: vhost-net: insufficient handling of error conditions in get_rx_bufs()
  • BZ - 1069865 - CVE-2014-0092 gnutls: incorrect error handling in certificate verification (GNUTLS-SA-2014-2)
  • BZ - 1075950 - [rhev-hypervisor6] Packaging for 3.3.2

CVEs

  • CVE-2013-1860
  • CVE-2014-0092
  • CVE-2014-0055

References

  • https://access.redhat.com/security/updates/classification/#important
  • https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Enterprise_Virtualization_Hypervisors.html
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Virtualization 6

SRPM
rhev-hypervisor6-6.5-20140324.0.el6ev.src.rpm SHA-256: c2a56f350fdb556aaa311408fe4adf47ee43ed8b7fb36a9e204306b1c6d3e1e6
x86_64
rhev-hypervisor6-6.5-20140324.0.el6ev.noarch.rpm SHA-256: 92b18ebc1fee6a6fd0f89cb8dd0178d1ded1bff1da6d5443cf5d3465e8c08715

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

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