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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://issues.shibboleth.net/jira/browse/SSPCPP" style="color: #3b73af; text-decoration: none">Shibboleth SP - C++</a> / <a href="https://issues.shibboleth.net/jira/browse/SSPCPP-684" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-d3abe8ee-4bd8-47f9-adf4-54f9d1418a22" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://issues.shibboleth.net/jira/browse/SSPCPP-684" style="color: #3b73af; text-decoration: none">SSPCPP-684</a>
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<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://issues.shibboleth.net/jira/browse/SSPCPP-684" style="color: #3b73af; text-decoration: none">Successfully cached metadata documents containing ` ` subquently fail signature validation</a> </span>
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Issue Type:
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Affects Versions:
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2.5.6
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Assignee:
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="cantor.2@osu.edu" id="email_cantor.2@osu.edu" href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=cantor.2%40osu.edu" style="color:#3b73af;; color: #3b73af; text-decoration: none">Scott Cantor</a>
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Components:
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Other
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Created:
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23/Mar/16 11:30 PM
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Environment:
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">$> cat /etc/redhat-release<br /> CentOS Linux release 7.2.1511 (Core)</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">$> yum info shibboleth<br /> Loaded plugins: fastestmirror<br /> Loading mirror speeds from cached hostfile<br /> Installed Packages<br /> Name : shibboleth<br /> Arch : x86_64<br /> Version : 2.5.6<br /> Release : 3.1<br /> Size : 4.9 M<br /> Repo : installed<br /> From repo : security_shibboleth<br /> Summary : Open source system for attribute-based Web SSO<br /> URL : <a href="http://shibboleth.net/" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">http://shibboleth.net/</a><br /> License : Apache 2.0<br /> Description : Shibboleth is a Web Single Sign-On implementations based on OpenSAML<br /> : that supports multiple protocols, federated identity, and the extensible<br /> : exchange of rich attributes subject to privacy controls.<br /> :<br /> : This package contains the Shibboleth Service Provider runtime libraries,<br /> : daemon, default plugins, and Apache module(s).</p>
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Labels:
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metadata signatures c14n
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Priority:
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Reporter:
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="bradleybeddoes@vho.aaf.edu.au" id="email_bradleybeddoes@vho.aaf.edu.au" href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=bradleybeddoes%40vho.aaf.edu.au" style="color:#3b73af;; color: #3b73af; text-decoration: none">Bradley Beddoes</a>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Discussion of this issue is available at <a href="http://marc.info/?l=shibboleth-users&m=145853734225037" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">http://marc.info/?l=shibboleth-users&m=145853734225037</a></p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Metadata documents which contain ` ` are loaded and verified by shibd without problem on initial request from upstream. </p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">If shibd subsequently attempts to read the locally cached metadata document it cannot verify the signature and the service begins to fail.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The current theory is that unexpected normalization is occurring when shibd is writing out the cached metadata document hence the subsequent invalid signature state occuring.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">We've seen this happen within the AAF and it has also happened recently with an entity that was entered via eduGAIN. This seems to impact 'free text' descriptive fields in particular with my thought being the cause is copy/paste from Word documents (or similar on Windows) for these fields.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">As a work around the AAF is now filtering out all instances of ` ` from metadata documents prior to signing. This has no impact on our metadata XML and ensures shibd continues to function.</p>
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