RHEL 6 : rhev-hypervisor6 (RHSA-2012:0531)
High Nessus Plugin ID 78922
SynopsisThe remote Red Hat host is missing one or more security updates.
DescriptionAn updated rhev-hypervisor6 package that fixes three security issues and one bug 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 libtasn1 decoded DER data. An attacker could create carefully-crafted DER encoded input (such as an X.509 certificate) that, when parsed by an application that uses libtasn1 (such as applications using 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.
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.
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-2012-0879, CVE-2012-1090, and CVE-2012-1097 (kernel issues)
CVE-2012-0884 and CVE-2012-1165 (openssl issues)
CVE-2012-0060, CVE-2012-0061, and CVE-2012-0815 (rpm issues)
This update also fixes the following bug :
* The Hypervisor previously set the lro_disable option for the enic driver. The driver does not support this option, as a result the Hypervisor did not correctly detect and configure the network interfaces of a Cisco M81KR adaptor, when present. The Hypervisor has been updated and no longer sets the invalid option for this driver.
Users of Red Hat Enterprise Virtualization Hypervisor are advised to upgrade to this updated package, which fixes these issues.
SolutionUpdate the affected rhev-hypervisor6 and / or rhev-hypervisor6-tools packages.