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             AUSCERT External Security Bulletin Redistribution

                               ESB-2011.0531
              Shibboleth Identity Provider Security Advisory
                                19 May 2011

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Shibboleth Identity Provider
Operating System:  Windows
                   Linux variants
Impact/Access:     Cross-site Scripting -- Remote/Unauthenticated
Resolution:        Patch/Upgrade

Original Bulletin: 
   http://shibboleth.internet2.edu/secadv/secadv_20110516.txt

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Shibboleth Identity Provider Security Advisory [16 May 2011]

An updated version of the Shibboleth Identity Provider software
is now available to correct a security issue.


Velocity templates vulnerable to XSS (cross-site scripting) injection
=====================================================================

The Shibboleth Identity Provider relies on OpenSAML's support for
encoding SAML messages for browsers, and OpenSAML in turn relies on
Velocity macro templates for this purpose. The templates generate HTML
output that is derived from information supplied from outside the IdP
and this information is not adequately sanitized.

A specially crafted request could be used to inject JavaScript
into these templates. While no specific attack was identified,
the potential for such attacks was verified.

Affected Versions
=================

All versions of the Shibboleth 2.x IdP prior to V2.3 are affected
by this issue.

Recommendations
===============

Upgrade to the V2.3 release of the Shibboleth IdP software.

Credits
=======
Scott Cantor, The Ohio State University

URL for this Security Advisory:
http://shibboleth.internet2.edu/secadv/secadv_20110516.txt


- -- 
Chad La Joie
http://itumi.biz
trusted identities, delivered

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
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