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8337664: Distrust TLS server certificates issued after Oct 2024 and a…
…nchored by Entrust Root CAs Reviewed-by: sgehwolf, andrew Backport-of: 7d49c52272b54070a13b02708dd7ce5f8e375a06
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jdk/src/share/classes/sun/security/validator/EntrustTLSPolicy.java
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| /* | ||
| * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved. | ||
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| * | ||
| * This code is free software; you can redistribute it and/or modify it | ||
| * under the terms of the GNU General Public License version 2 only, as | ||
| * published by the Free Software Foundation. Oracle designates this | ||
| * particular file as subject to the "Classpath" exception as provided | ||
| * by Oracle in the LICENSE file that accompanied this code. | ||
| * | ||
| * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| * version 2 for more details (a copy is included in the LICENSE file that | ||
| * accompanied this code). | ||
| * | ||
| * You should have received a copy of the GNU General Public License version | ||
| * 2 along with this work; if not, write to the Free Software Foundation, | ||
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| * | ||
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| * or visit www.oracle.com if you need additional information or have any | ||
| * questions. | ||
| */ | ||
| package sun.security.validator; | ||
|
|
||
| import java.security.cert.X509Certificate; | ||
| import java.time.LocalDate; | ||
| import java.time.Month; | ||
| import java.time.ZoneOffset; | ||
| import java.util.Arrays; | ||
| import java.util.Collections; | ||
| import java.util.Date; | ||
| import java.util.HashSet; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
|
|
||
| import sun.security.util.Debug; | ||
| import sun.security.x509.X509CertImpl; | ||
|
|
||
| /** | ||
| * This class checks if Entrust issued TLS Server certificates should be | ||
| * restricted. | ||
| */ | ||
| final class EntrustTLSPolicy { | ||
|
|
||
| private static final Debug debug = Debug.getInstance("certpath"); | ||
|
|
||
| // SHA-256 certificate fingerprints of distrusted roots | ||
| private static final Set<String> FINGERPRINTS = | ||
| Collections.unmodifiableSet(new HashSet<>(Arrays.asList( | ||
| // cacerts alias: entrustevca | ||
| // DN: CN=Entrust Root Certification Authority, | ||
| // OU=(c) 2006 Entrust, Inc., | ||
| // OU=www.entrust.net/CPS is incorporated by reference, | ||
| // O=Entrust, Inc., C=US | ||
| "73C176434F1BC6D5ADF45B0E76E727287C8DE57616C1E6E6141A2B2CBC7D8E4C", | ||
| // cacerts alias: entrustrootcaec1 | ||
| // DN: CN=Entrust Root Certification Authority - EC1, | ||
| // OU=(c) 2012 Entrust, Inc. - for authorized use only, | ||
| // OU=See www.entrust.net/legal-terms, O=Entrust, Inc., C=US | ||
| "02ED0EB28C14DA45165C566791700D6451D7FB56F0B2AB1D3B8EB070E56EDFF5", | ||
| // cacerts alias: entrustrootcag2 | ||
| // DN: CN=Entrust Root Certification Authority - G2, | ||
| // OU=(c) 2009 Entrust, Inc. - for authorized use only, | ||
| // OU=See www.entrust.net/legal-terms, O=Entrust, Inc., C=US | ||
| "43DF5774B03E7FEF5FE40D931A7BEDF1BB2E6B42738C4E6D3841103D3AA7F339", | ||
| // cacerts alias: entrustrootcag4 | ||
| // DN: CN=Entrust Root Certification Authority - G4 | ||
| // OU=(c) 2015 Entrust, Inc. - for authorized use only, | ||
| // OU=See www.entrust.net/legal-terms, O=Entrust, Inc., C=US, | ||
| "DB3517D1F6732A2D5AB97C533EC70779EE3270A62FB4AC4238372460E6F01E88", | ||
| // cacerts alias: entrust2048ca | ||
| // DN: CN=Entrust.net Certification Authority (2048), | ||
| // OU=(c) 1999 Entrust.net Limited, | ||
| // OU=www.entrust.net/CPS_2048 incorp. by ref. (limits liab.), | ||
| // O=Entrust.net | ||
| "6DC47172E01CBCB0BF62580D895FE2B8AC9AD4F873801E0C10B9C837D21EB177", | ||
| // cacerts alias: affirmtrustcommercialca | ||
| // DN: CN=AffirmTrust Commercial, O=AffirmTrust, C=US | ||
| "0376AB1D54C5F9803CE4B2E201A0EE7EEF7B57B636E8A93C9B8D4860C96F5FA7", | ||
| // cacerts alias: affirmtrustnetworkingca | ||
| // DN: CN=AffirmTrust Networking, O=AffirmTrust, C=US | ||
| "0A81EC5A929777F145904AF38D5D509F66B5E2C58FCDB531058B0E17F3F0B41B", | ||
| // cacerts alias: affirmtrustpremiumca | ||
| // DN: CN=AffirmTrust Premium, O=AffirmTrust, C=US | ||
| "70A73F7F376B60074248904534B11482D5BF0E698ECC498DF52577EBF2E93B9A", | ||
| // cacerts alias: affirmtrustpremiumeccca | ||
| // DN: CN=AffirmTrust Premium ECC, O=AffirmTrust, C=US | ||
| "BD71FDF6DA97E4CF62D1647ADD2581B07D79ADF8397EB4ECBA9C5E8488821423" | ||
| ))); | ||
|
|
||
| // Any TLS Server certificate that is anchored by one of the Entrust | ||
| // roots above and is issued after this date will be distrusted. | ||
| private static final LocalDate OCTOBER_31_2024 = | ||
| LocalDate.of(2024, Month.OCTOBER, 31); | ||
|
|
||
| /** | ||
| * This method assumes the eeCert is a TLS Server Cert and chains back to | ||
| * the anchor. | ||
| * | ||
| * @param chain the end-entity's certificate chain. The end entity cert | ||
| * is at index 0, the trust anchor at index n-1. | ||
| * @throws ValidatorException if the certificate is distrusted | ||
| */ | ||
| static void checkDistrust(X509Certificate[] chain) | ||
| throws ValidatorException { | ||
| X509Certificate anchor = chain[chain.length-1]; | ||
| String fp = fingerprint(anchor); | ||
| if (fp == null) { | ||
| throw new ValidatorException("Cannot generate fingerprint for " | ||
| + "trust anchor of TLS server certificate"); | ||
| } | ||
| if (FINGERPRINTS.contains(fp)) { | ||
| Date notBefore = chain[0].getNotBefore(); | ||
| LocalDate ldNotBefore = notBefore.toInstant() | ||
| .atZone(ZoneOffset.UTC).toLocalDate(); | ||
| // reject if certificate is issued after October 31, 2024 | ||
| checkNotBefore(ldNotBefore, OCTOBER_31_2024, anchor); | ||
| } | ||
| } | ||
|
|
||
| private static String fingerprint(X509Certificate cert) { | ||
| return X509CertImpl.getFingerprint("SHA-256", cert); | ||
| } | ||
|
|
||
| private static void checkNotBefore(LocalDate notBeforeDate, | ||
| LocalDate distrustDate, X509Certificate anchor) | ||
| throws ValidatorException { | ||
| if (notBeforeDate.isAfter(distrustDate)) { | ||
| throw new ValidatorException | ||
| ("TLS Server certificate issued after " + distrustDate + | ||
| " and anchored by a distrusted legacy Entrust root CA: " | ||
| + anchor.getSubjectX500Principal(), | ||
| ValidatorException.T_UNTRUSTED_CERT, anchor); | ||
| } | ||
| } | ||
|
|
||
| private EntrustTLSPolicy() {} | ||
| } |
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