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Red Hat Security Advisory
Synopsis: Moderate: Red Hat Enterprise MRG Messaging 2.2 update
Advisory ID: RHSA-2012:1277-01
Product: Red Hat Enterprise MRG for RHEL-5
Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-1277.html
Issue date: 2012-09-19
CVE Names: CVE-2012-2145 CVE-2012-3467
Updated Messaging component packages that fix two security issues, multiple
bugs, and add various enhancements are now available for Red Hat Enterprise
MRG 2.2 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.
2. Relevant releases/architectures:
MRG Grid Execute Node for RHEL 5 Server v.2 - noarch
MRG Grid for RHEL 5 Server v.2 - noarch
MRG Management for RHEL 5 Server v.2 - noarch
Red Hat MRG Messaging for RHEL 5 Server v.2 - i386, noarch, x86_64
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
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 discovered that the Apache Qpid daemon (qpidd) did not allow the
number of connections from clients to be restricted. A malicious client
could use this flaw to open an excessive amount of connections, preventing
other legitimate clients from establishing a connection to qpidd.
To address CVE-2012-2145, new qpidd configuration options were introduced:
max-negotiate-time defines the time during which initial protocol
negotiation must succeed, connection-limit-per-user and
connection-limit-per-ip can be used to limit the number of connections per
user and client host IP. Refer to the qpidd manual page for additional
It was discovered that qpidd did not require authentication for
shadow connections created when a new broker joins a cluster. A malicious
client could use this flaw to bypass client authentication. (CVE-2012-3467)
This update also fixes multiple 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 2.2 are
advised to upgrade to these updated packages, which resolve the issues 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.
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
5. Bugs fixed (http://bugzilla.redhat.com/):
689408 - ACL denials while replicating exclusive queues to a newly joined node
693444 - Inconsistency in clients on reliability of receiver link from exchange
809357 - "qpid-perftest.exe" and "qpid-latency-test.exe" fail
with option "--tcp-nodelay" on Windows
817175 - CVE-2012-2145 qpid-cpp: not closing incomplete connections exhausts
file descriptors, leading to DoS
836276 - CVE-2012-3467 qpid-cpp-server-cluster: unauthorized broker access
caused by the use of NullAuthenticator catch-up shadow connections
841488 - qpid-stat does not support multi-byte characters (UTF-8)
6. Package List:
MRG Grid for RHEL 5 Server v.2:
MRG Grid Execute Node for RHEL 5 Server v.2:
MRG Management for RHEL 5 Server v.2:
Red Hat MRG Messaging for RHEL 5 Server v.2:
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
The Red Hat security contact is <firstname.lastname@example.org>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2012 Red Hat, Inc.
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