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Security Advisory Important: rhev-hypervisor6 security update

Advisory: RHSA-2014:0041-1
Type: Security Advisory
Severity: Important
Issued on: 2014-01-21
Last updated on: 2014-01-21
Affected Products: Red Hat Enterprise Virtualization 3
CVEs (cve.mitre.org): CVE-2013-4353
CVE-2013-5605
CVE-2013-5606
CVE-2013-6449

Details

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.

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.

Upgrade Note: If you upgrade Red Hat Enterprise Virtualization Hypervisor
6.4 to version 6.5 through the 3.3 Manager administration portal,
configuration of the previous system appears to be lost when reported in
the TUI. However, this is an issue in the TUI itself, not in the upgrade
process; the configuration of the system is not affected.

A flaw was found in the way NSS handled invalid handshake packets. A remote
attacker could use this flaw to cause a TLS/SSL client using NSS to crash
or, possibly, execute arbitrary code with the privileges of the user
running the application. (CVE-2013-5605)

A flaw was found in the way OpenSSL determined which hashing algorithm to
use when TLS protocol version 1.2 was enabled. This could possibly cause
OpenSSL to use an incorrect hashing algorithm, leading to a crash of an
application using the library. (CVE-2013-6449)

A NULL pointer dereference flaw was found in the way OpenSSL handled
TLS/SSL protocol handshake packets. A specially crafted handshake packet
could cause a TLS/SSL client using OpenSSL to crash. (CVE-2013-4353)

It was discovered that NSS did not reject certificates with incompatible
key usage constraints when validating them while the verifyLog feature was
enabled. An application using the NSS certificate validation API could
accept an invalid certificate. (CVE-2013-5606)

Red Hat would like to thank the Mozilla project for reporting
CVE-2013-5606. Upstream acknowledges Camilo Viecco as the original reporter
of CVE-2013-5606.

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-2013-6462 (libXfont issue)

CVE-2013-6629, and CVE-2013-6630 (libjpeg-turbo issues)

CVE-2013-1739, CVE-2013-1741, and CVE-2013-5607 (nss, nspr issues)

CVE-2013-6450 (openssl issue)

CVE-2013-6425 (pixman issue)

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

Updated packages

Red Hat Enterprise Virtualization 3

x86_64:
rhev-hypervisor6-6.5-20140112.0.el6ev.noarch.rpm
File outdated by:  RHSA-2014:0378
    MD5: 1e83c477ba5deaab3281eb3c20271020
SHA-256: cdde064ce3803059355b9559ce0f71c7970947ac2218fc7863d8cd9e79bb2914
 
(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

1005766 - [rhev-hypervisor6] Build rhev-hypervisor6 for 3.3 release
1030807 - CVE-2013-5605 nss: Null_Cipher() does not respect maxOutputLen (MFSA 2013-103)
1031457 - CVE-2013-5606 nss: CERT_VerifyCert returns SECSuccess (saying certificate is good) even for bad certificates (MFSA 2013-103)
1045363 - CVE-2013-6449 openssl: crash when using TLS 1.2 caused by use of incorrect hash algorithm
1049058 - CVE-2013-4353 openssl: client NULL dereference crash on malformed handshake packets


References



These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
https://www.redhat.com/security/team/key/#package

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