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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/JXT" style="color: #3b73af; text-decoration: none">XMLTooling - Java</a> / <a href="https://issues.shibboleth.net/jira/browse/JXT-121" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-a456a67b-ef92-4b84-a73e-31d31e95c087" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://issues.shibboleth.net/jira/browse/JXT-121" style="color: #3b73af; text-decoration: none">JXT-121</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/JXT-121" style="color: #3b73af; text-decoration: none">KeyInfoHelper getCertificate method making incorrect assumption on X509Certificate element content</a> </span>
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Issue Type:
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Affects Versions:
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1.4.5
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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="putmanb@shibboleth.net" id="email_putmanb@shibboleth.net" href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=putmanb%40shibboleth.net" style="color:#3b73af;; color: #3b73af; text-decoration: none">Brent Putman</a>
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Components:
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Security
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Created:
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21/Apr/15 9:45 AM
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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="djgraff209@idp.protectnetwork.org" id="email_djgraff209@idp.protectnetwork.org" href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=djgraff209%40idp.protectnetwork.org" style="color:#3b73af;; color: #3b73af; text-decoration: none">djgraff209@idp.protectnetwork.org</a>
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Security Level:
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Standard (Standard bug, may impact functionality but does not represent a security vulnerability )
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I found, what I think, is a fairly significant oversight in the KeyInfoHelper#getCertificate() method.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">This method calls decodes the Base64 content of a o.o.x.s.X509Certificate element before passing to the o.o.x.s.x509.X509Util#decodeCertificate() method. That method attempts to create a new instance of the "not-yet-commons-ssl" class TrustMaterial which is expecting a stream of PEM encoded certificates as bytes.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">This fails miserably when attempting to use this with an encrypted assertion with KeyInfo present.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">A remediation this problem would be to update the KeyInfoHelper#getCertificateMethod to the following:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">static</span> X509Certificate getCertificate(org.opensaml.xml.signature.X509Certificate xmlCert)
<span class="code-keyword" style="color: #000091">throws</span> CertificateException {
<span class="code-keyword" style="color: #000091">if</span> (xmlCert == <span class="code-keyword" style="color: #000091">null</span> || xmlCert.getValue() == <span class="code-keyword" style="color: #000091">null</span>) {
<span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">null</span>;
}
<span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">byte</span>[] certificateMaterial= Base64.decode(xmlCert.getValue());
<span class="code-keyword" style="color: #000091">final</span> InputStream cerificateMaterialStream= <span class="code-keyword" style="color: #000091">new</span> ByteArrayInputStream(certificateMaterial);
<span class="code-keyword" style="color: #000091">final</span> CertificateFactory certificateFactory= CertificateFactory.getInstance(<span class="code-quote" style="color: #009100">"X.509"</span>);
<span class="code-keyword" style="color: #000091">final</span> X09Certificate certificate= (X509Certificate)certificateFactory.generateCertificate(certificateMaterialStream);
<span class="code-keyword" style="color: #000091">return</span> certificate;
}
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