Bug 836276 - (CVE-2012-3467) CVE-2012-3467 qpid-cpp-server-cluster: unauthorized broker access caused by the use of NullAuthenticator catch-up shadow connections
CVE-2012-3467 qpid-cpp-server-cluster: unauthorized broker access caused by t...
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
: Security
Depends On: 834608
Blocks: 767033 817177
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Reported: 2012-06-28 10:35 EDT by Jan Lieskovsky
Modified: 2016-11-08 11:22 EST (History)
9 users (show)

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Fixed In Version: qpid-cpp 0.17
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2012-09-19 16:16:23 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Jan Lieskovsky 2012-06-28 10:35:38 EDT
In the AMQP messaging scheme implementation each broker can have both, direct connections and shadow connections. A shadow connection represents a connection to another broker in the cluster. Members use shadow connections to simulate the actions of other brokers, so that all members arrive at the same time. Output for shadow connections is just discarded, brokers only send data to their directly-connected clients.

A security flaw was found in the way the Apache Qpid C++ implementation performed authentication of connections creating "catch-up" shadow connections, which are used when broker joins the cluster. An AMQP client could use this to fake shadow connections to the AMQP broker. This issue was caused by using NullAuthenticator mechanism for authenticating these "catch-up" shadow connection and was fixed by making broker require authentication.

Upstream ticket:
[1] https://issues.apache.org/jira/browse/QPID-3849

Relevant upstream patch:
[2] http://svn.apache.org/viewvc?view=revision&revision=1352992
Comment 3 errata-xmlrpc 2012-09-19 13:21:38 EDT
This issue has been addressed in following products:

  MRG for RHEL-5 v. 2

Via RHSA-2012:1277 https://rhn.redhat.com/errata/RHSA-2012-1277.html
Comment 4 errata-xmlrpc 2012-09-19 13:30:38 EDT
This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2012:1279 https://rhn.redhat.com/errata/RHSA-2012-1279.html

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