RHEL 6 : rhev-hypervisor6 (RHSA-2014:0815)

This script is Copyright (C) 2014-2017 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing a security update.

Description :

An updated rhev-hypervisor6 package that fixes several 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.

A flaw was found in the way GnuTLS parsed session IDs from ServerHello
messages of the TLS/SSL handshake. A malicious server could use this
flaw to send an excessively long session ID value, which would trigger
a buffer overflow in a connecting TLS/SSL client application using
GnuTLS, causing the client application to crash or, possibly, execute
arbitrary code. (CVE-2014-3466)

It was discovered that the asn1_get_bit_der() function of the libtasn1
library incorrectly reported the length of ASN.1-encoded data.
Specially crafted ASN.1 input could cause an application using
libtasn1 to perform an out-of-bounds access operation, causing the
application to crash or, possibly, execute arbitrary code.
(CVE-2014-3468)

Multiple incorrect buffer boundary check issues were discovered in
libtasn1. Specially crafted ASN.1 input could cause an application
using libtasn1 to crash. (CVE-2014-3467)

Multiple NULL pointer dereference flaws were found in libtasn1's
asn1_read_value() function. Specially crafted ASN.1 input could cause
an application using libtasn1 to crash, if the application used the
aforementioned function in a certain way. (CVE-2014-3469)

Red Hat would like to thank GnuTLS upstream for reporting
CVE-2014-3466, CVE-2014-3468, CVE-2014-3467, and CVE-2014-3469.
Upstream acknowledges Joonas Kuorilehto of Codenomicon as the original
reporter of CVE-2014-3466.

This updated package provides an updated kernel component that
includes 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-2013-6378, CVE-2014-0203, CVE-2014-1737, CVE-2014-1738,
CVE-2014-1874, CVE-2014-2039 and CVE-2014-3153 (kernel issues)

Users of the Red Hat Enterprise Virtualization Hypervisor are advised
to upgrade to this updated package.

See also :

https://www.redhat.com/security/data/cve/CVE-2014-3466.html
https://www.redhat.com/security/data/cve/CVE-2014-3467.html
https://www.redhat.com/security/data/cve/CVE-2014-3468.html
https://www.redhat.com/security/data/cve/CVE-2014-3469.html
http://www.nessus.org/u?64c6b598
http://rhn.redhat.com/errata/RHSA-2014-0815.html
http://www.nessus.org/u?c6b506c4

Solution :

Update the affected rhev-hypervisor6 package.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.9
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false

Family: Red Hat Local Security Checks

Nessus Plugin ID: 79108 ()

Bugtraq ID: 67741
67745
67748
67749

CVE ID: CVE-2014-3466
CVE-2014-3467
CVE-2014-3468
CVE-2014-3469

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