RHEL 5 : MRG (RHSA-2013:0561)
Medium Nessus Plugin ID 76654
SynopsisThe remote Red Hat host is missing one or more security updates.
DescriptionUpdated Messaging component packages that fix multiple security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise MRG 2.3 for Red Hat Enterprise Linux 5.
The Red Hat Security Response Team has rated this update as having moderate 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.
Red Hat Enterprise MRG (Messaging, Realtime, and Grid) is a next-generation IT infrastructure for enterprise computing. MRG offers increased performance, reliability, interoperability, and faster computing for enterprise customers.
MRG Messaging is a high-speed reliable messaging distribution for Linux based on AMQP (Advanced Message Queuing Protocol), an open protocol standard for enterprise messaging that is designed to make mission critical messaging widely available as a standard service, and to make enterprise messaging interoperable across platforms, programming languages, and vendors. MRG Messaging includes an AMQP 0-10 messaging broker; AMQP 0-10 client libraries for C++, Java JMS, and Python; as well as persistence libraries and management tools.
It was found that the Apache Qpid daemon (qpidd) treated AMQP connections with the federation_tag attribute set as a broker-to-broker connection, rather than a client-to-server connection. This resulted in the source user ID of messages not being checked. A client that can establish an AMQP connection with the broker could use this flaw to bypass intended authentication. For Condor users, if condor-aviary is installed, this flaw could be used to submit jobs that would run as any user (except root, as Condor does not run jobs as root). (CVE-2012-4446)
It was found that the AMQP type decoder in qpidd allowed arbitrary data types in certain messages. A remote attacker could use this flaw to send a message containing an excessively large amount of data, causing qpidd to allocate a large amount of memory. qpidd would then be killed by the Out of Memory killer (denial of service).
An integer overflow flaw, leading to an out-of-bounds read, was found in the Qpid qpid::framing::Buffer::checkAvailable() function. An unauthenticated, remote attacker could send a specially crafted message to Qpid, causing it to crash. (CVE-2012-4459)
The CVE-2012-4446, CVE-2012-4458, and CVE-2012-4459 issues were discovered by Florian Weimer of the Red Hat Product Security Team.
This update also fixes several bugs and adds enhancements.
Documentation for these changes will be available shortly from the Technical Notes document linked to in the References section.
All users of the Messaging capabilities of Red Hat Enterprise MRG are advised to upgrade to these updated packages, which resolve these issues, and fix the bugs and add the enhancements noted in the Red Hat Enterprise MRG 2 Technical Notes. After installing the updated packages, stop the cluster by either running 'service qpidd stop' on all nodes, or 'qpid-cluster --all-stop' on any one of the cluster nodes. Once stopped, restart the cluster with 'service qpidd start' on all nodes for the update to take effect.
SolutionUpdate the affected packages.