RHEL 6 : rhev-hypervisor6 (RHSA-2012:0109)

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


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

An updated rhev-hypervisor6 package that fixes multiple 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.

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 heap overflow flaw was found in the way QEMU-KVM emulated the e1000
network interface card. A privileged guest user in a virtual machine
whose network interface is configured to use the e1000 emulated driver
could use this flaw to crash the host or, possibly, escalate their
privileges on the host. (CVE-2012-0029)

An information leak flaw was found in the SSL 3.0 protocol
implementation in OpenSSL. Incorrect initialization of SSL record
padding bytes could cause an SSL client or server to send a limited
amount of possibly sensitive data to its SSL peer via the encrypted
connection. (CVE-2011-4576)

A denial of service flaw was found in the RFC 3779 implementation in
OpenSSL. A remote attacker could use this flaw to make an application
using OpenSSL exit unexpectedly by providing a specially crafted X.509
certificate that has malformed RFC 3779 extension data.
(CVE-2011-4577)

It was discovered that OpenSSL did not limit the number of TLS/SSL
handshake restarts required to support Server Gated Cryptography. A
remote attacker could use this flaw to make a TLS/SSL server using
OpenSSL consume an excessive amount of CPU by continuously restarting
the handshake. (CVE-2011-4619)

Red Hat would like to thank Nicolae Mogoreanu for reporting
CVE-2012-0029.

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-2009-5029 and CVE-2011-4609 (glibc issues)

CVE-2012-0056 (kernel issue)

CVE-2011-4108 and CVE-2012-0050 (openssl issues)

This update also fixes the following bugs :

* Previously, it was possible to begin a Hypervisor installation
without any valid disks to install to.

Now, if no valid disks are found for Hypervisor installation, a
message is displayed informing the user that there are no valid disks
for installation. (BZ#781471)

* Previously, the user interface for the Hypervisor did not indicate
whether the system was registered with Red Hat Network (RHN) Classic
or RHN Satellite. As a result, customers could not easily determine
the registration status of their Hypervisor installations.

The TUI has been updated to display the registration status of the
Hypervisor. (BZ#788223)

* Previously, autoinstall would fail if the firstboot or reinstall
options were passed but local_boot or upgrade were not passed. Now,
neither the local_boot or upgrade parameters are required for
autoinstall. (BZ#788225)

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

See also :

https://www.redhat.com/security/data/cve/CVE-2011-4576.html
https://www.redhat.com/security/data/cve/CVE-2011-4577.html
https://www.redhat.com/security/data/cve/CVE-2011-4619.html
https://www.redhat.com/security/data/cve/CVE-2012-0029.html
http://www.nessus.org/u?44b2ccfe
http://rhn.redhat.com/errata/RHSA-2012-0109.html

Solution :

Update the affected rhev-hypervisor6 and / or rhev-hypervisor6-tools
packages.

Risk factor :

High / CVSS Base Score : 7.4
(CVSS2#AV:A/AC:M/Au:S/C:C/I:C/A:C)
CVSS Temporal Score : 6.4
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false

Family: Red Hat Local Security Checks

Nessus Plugin ID: 79282 ()

Bugtraq ID: 51281
51642

CVE ID: CVE-2011-4576
CVE-2011-4577
CVE-2011-4619
CVE-2012-0029

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