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Security Advisory Important: Red Hat JBoss Portal 5.2.2 security update

Advisory: RHSA-2013:0953-1
Type: Security Advisory
Severity: Important
Issued on: 2013-06-18
Last updated on: 2013-06-18
Affected Products:
CVEs ( CVE-2011-2487


Red Hat JBoss Portal 5.2.2 roll up patch 1, which fixes multiple security
issues and various bugs, is now available from the Red Hat Customer Portal.

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.

Red Hat JBoss Portal is the open source implementation of the Java EE suite
of services and Portal services running atop Red Hat JBoss Enterprise
Application Platform.

JBoss Web Services leaked side-channel data when distributing symmetric
keys (for XML encryption), allowing a remote attacker to recover the entire
plain text form of a symmetric key. (CVE-2011-2487)

Spring framework could possibly evaluate Expression Language (EL)
expressions twice, allowing a remote attacker to execute arbitrary code in
the context of the application server, or to obtain sensitive information
from the server. (CVE-2011-2730)

Note: Manual action is required to apply the fix for CVE-2011-2730. If your
system has deployed applications which use Spring framework, the context
parameter "springJspExpressionSupport" must be set to "false" to mitigate
CVE-2011-2730, for example, in the application's web.xml file. This will
prevent the double-evaluation of EL expressions that leads to the flaw.
Red Hat JBoss Portal will deploy an application using Spring framework if
JOSSO (Java Open Single Sign-On) is configured.

XML encryption backwards compatibility attacks were found against various
frameworks, including Apache CXF. An attacker could force a server to use
insecure, legacy cryptosystems, even when secure cryptosystems were enabled
on endpoints. By forcing the use of legacy cryptosystems, flaws such as
CVE-2011-1096 and CVE-2011-2487 would be exposed, allowing plain text to be
recovered from cryptograms and symmetric keys. This issue only affected
the JBoss Web Services Native (jbossws-native) stack as Red Hat JBoss
Portal does not use JBoss Web Services CXF (jbossws-cxf). (CVE-2012-5575)

For jbossws-native, the fix for CVE-2012-5575 is implemented by two new
configuration parameters in the 'encryption' element. This element can be a
child of 'requires' in both client and server wsse configuration
descriptors (set on a per-application basis via the application's
jboss-wsse-server.xml and jboss-wsse-client.xml files). The new attributes
are 'algorithms' and 'keyWrapAlgorithms'. These attributes should contain a
blank space or comma separated list of algorithm IDs that are allowed for
the encrypted incoming message, both for encryption and private key
wrapping. For backwards compatibility, no algorithm checks are performed by
default for empty lists or missing attributes.

For example (do not include the line break in your configuration):

encryption algorithms="aes-192-gcm aes-256-gcm"

Specifies that incoming messages are required to be encrypted, and that the
only permitted encryption algorithms are AES-192 and 256 in GCM mode, and
RSA-OAEP only for key wrapping.

Before performing any decryption, the jbossws-native stack will verify that
each algorithm specified in the incoming messages is included in the
allowed algorithms lists from these new encryption element attributes. The
algorithm values to be used for 'algorithms' and 'keyWrapAlgorithms' are
the same as for 'algorithm' and 'keyWrapAlgorithm' in the 'encrypt'

Red Hat would like to thank Juraj Somorovsky of Ruhr-University Bochum
for reporting CVE-2011-2487, and Tibor Jager, Kenneth G. Paterson and Juraj
Somorovsky of Ruhr-University Bochum for reporting CVE-2012-5575.

Warning: Before applying this update, back up all applications deployed on
Red Hat JBoss Portal, along with all customized configuration files, and
any databases and database settings.

All users of Red Hat JBoss Portal 5.2.2 as provided from the Red Hat
Customer Portal are advised to apply this roll up patch.


The References section of this erratum contains a download link (you must
log in to download the update). Before applying the update, back up all
applications deployed on Red Hat JBoss Portal, along with all customized
configuration files, and any databases and database settings.

Note that it is recommended to halt the Red Hat JBoss Portal server by
stopping the JBoss Application Server process before installing this
update, and then after installing the update, restart the Red Hat JBoss
Portal server by starting the JBoss Application Server process.

Updated packages

Bugs fixed (see bugzilla for more information)

713539 - CVE-2011-2487 jbossws: Prone to Bleichenbacher attack against to be distributed symmetric key
737608 - CVE-2011-2730 Spring Framework: Information (internal server information, classpath, local working directories, session IDs) disclosure
880443 - CVE-2012-5575 jbossws-native, jbossws-cxf, apache-cxf: XML encryption backwards compatibility attacks


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