(RHSA-2012:0488) Important: rhev-hypervisor5 security and bug fix update

The rhev-hypervisor5 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 libtasn1 decoded DER data. An attacker could
create a carefully-crafted X.509 certificate that, when parsed by an
application that uses GnuTLS, could cause the application to crash.
(CVE-2012-1569)

A flaw was found in the way GnuTLS decrypted malformed TLS records. This
could cause a TLS/SSL client or server to crash when processing a
specially-crafted TLS record from a remote TLS/SSL connection peer.
(CVE-2012-1573)

An integer overflow flaw was found in the implementation of the printf
functions family. This could allow an attacker to bypass FORTIFY_SOURCE
protections and execute arbitrary code using a format string flaw in an
application, even though these protections are expected to limit the
impact of such flaws to an application abort. (CVE-2012-0864)

Red Hat would like to thank Matthew Hall of Mu Dynamics for reporting
CVE-2012-1569 and CVE-2012-1573.

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-2011-4128 (gnutls issue)

CVE-2012-1583 (kernel issue)

CVE-2011-3045 (libpng issue)

CVE-2012-0884 and CVE-2012-1165 (openssl issues)

Further information on the changes made to the package is available on the
relevant errata:

https://rhn.redhat.com/errata/RHBA-2012-0398.html

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