8148108: Disable Diffie-Hellman keys less than 1024 bits
Reviewed-by: vinnie, mullan
--- a/jdk/src/java.base/share/conf/security/java.security Wed Mar 02 23:28:59 2016 +0530
+++ b/jdk/src/java.base/share/conf/security/java.security Fri Mar 04 14:04:01 2016 +0000
@@ -578,7 +578,7 @@
#
# Example:
# jdk.tls.disabledAlgorithms=MD5, SSLv3, DSA, RSA keySize < 2048
-jdk.tls.disabledAlgorithms=SSLv3, RC4, MD5withRSA, DH keySize < 768
+jdk.tls.disabledAlgorithms=SSLv3, RC4, MD5withRSA, DH keySize < 1024
# Legacy algorithms for Secure Socket Layer/Transport Layer Security (SSL/TLS)
# processing in JSSE implementation.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/sun/security/ssl/DHKeyExchange/LegacyDHEKeyExchange.java Fri Mar 04 14:04:01 2016 +0000
@@ -0,0 +1,325 @@
+/*
+ * Copyright (c) 2016, 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.
+ *
+ * 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.
+ */
+
+// SunJSSE does not support dynamic system properties, no way to re-use
+// system properties in samevm/agentvm mode.
+
+/*
+ * @test
+ * @bug 8148108
+ * @summary Disable Diffie-Hellman keys less than 1024 bits
+ * @run main/othervm -Djdk.tls.ephemeralDHKeySize=legacy LegacyDHEKeyExchange
+ */
+
+import java.io.*;
+import javax.net.ssl.*;
+
+public class LegacyDHEKeyExchange {
+
+ /*
+ * =============================================================
+ * Set the various variables needed for the tests, then
+ * specify what tests to run on each side.
+ */
+
+ /*
+ * Should we run the client or server in a separate thread?
+ * Both sides can throw exceptions, but do you have a preference
+ * as to which side should be the main thread.
+ */
+ static boolean separateServerThread = false;
+
+ /*
+ * Where do we find the keystores?
+ */
+ static String pathToStores = "../../../../javax/net/ssl/etc";
+ static String keyStoreFile = "keystore";
+ static String trustStoreFile = "truststore";
+ static String passwd = "passphrase";
+
+ /*
+ * Is the server ready to serve?
+ */
+ volatile static boolean serverReady = false;
+
+ /*
+ * Turn on SSL debugging?
+ */
+ static boolean debug = false;
+
+ /*
+ * If the client or server is doing some kind of object creation
+ * that the other side depends on, and that thread prematurely
+ * exits, you may experience a hang. The test harness will
+ * terminate all hung threads after its timeout has expired,
+ * currently 3 minutes by default, but you might try to be
+ * smart about it....
+ */
+
+ /*
+ * Define the server side of the test.
+ *
+ * If the server prematurely exits, serverReady will be set to true
+ * to avoid infinite hangs.
+ */
+ void doServerSide() throws Exception {
+ SSLServerSocketFactory sslssf =
+ (SSLServerSocketFactory) SSLServerSocketFactory.getDefault();
+ SSLServerSocket sslServerSocket =
+ (SSLServerSocket) sslssf.createServerSocket(serverPort);
+
+ serverPort = sslServerSocket.getLocalPort();
+
+ /*
+ * Signal Client, we're ready for his connect.
+ */
+ serverReady = true;
+
+ try (SSLSocket sslSocket = (SSLSocket)sslServerSocket.accept()) {
+ InputStream sslIS = sslSocket.getInputStream();
+ OutputStream sslOS = sslSocket.getOutputStream();
+
+ sslIS.read();
+ sslOS.write(85);
+ sslOS.flush();
+
+ throw new Exception(
+ "Leagcy DH keys (< 1024) should be restricted");
+ } catch (SSLHandshakeException she) {
+ // ignore, client should terminate the connection
+ } finally {
+ sslServerSocket.close();
+ }
+ }
+
+ /*
+ * Define the client side of the test.
+ *
+ * If the server prematurely exits, serverReady will be set to true
+ * to avoid infinite hangs.
+ */
+ void doClientSide() throws Exception {
+
+ /*
+ * Wait for server to get started.
+ */
+ while (!serverReady) {
+ Thread.sleep(50);
+ }
+
+ SSLSocketFactory sslsf =
+ (SSLSocketFactory) SSLSocketFactory.getDefault();
+ SSLSocket sslSocket = (SSLSocket)
+ sslsf.createSocket("localhost", serverPort);
+
+ String[] suites = new String [] {"TLS_DHE_RSA_WITH_AES_128_CBC_SHA"};
+ sslSocket.setEnabledCipherSuites(suites);
+
+ try {
+ InputStream sslIS = sslSocket.getInputStream();
+ OutputStream sslOS = sslSocket.getOutputStream();
+
+ sslOS.write(280);
+ sslOS.flush();
+ sslIS.read();
+
+ throw new Exception("Leagcy DH keys (< 1024) should be restricted");
+ } catch (SSLHandshakeException she) {
+ // ignore, should be caused by algorithm constraints
+ } finally {
+ sslSocket.close();
+ }
+ }
+
+ /*
+ * =============================================================
+ * The remainder is just support stuff
+ */
+
+ // use any free port by default
+ volatile int serverPort = 0;
+
+ volatile Exception serverException = null;
+ volatile Exception clientException = null;
+
+ public static void main(String[] args) throws Exception {
+ String keyFilename =
+ System.getProperty("test.src", ".") + "/" + pathToStores +
+ "/" + keyStoreFile;
+ String trustFilename =
+ System.getProperty("test.src", ".") + "/" + pathToStores +
+ "/" + trustStoreFile;
+
+ System.setProperty("javax.net.ssl.keyStore", keyFilename);
+ System.setProperty("javax.net.ssl.keyStorePassword", passwd);
+ System.setProperty("javax.net.ssl.trustStore", trustFilename);
+ System.setProperty("javax.net.ssl.trustStorePassword", passwd);
+
+ if (debug) {
+ System.setProperty("javax.net.debug", "all");
+ }
+
+ /*
+ * Start the tests.
+ */
+ new LegacyDHEKeyExchange();
+ }
+
+ Thread clientThread = null;
+ Thread serverThread = null;
+
+ /*
+ * Primary constructor, used to drive remainder of the test.
+ *
+ * Fork off the other side, then do your work.
+ */
+ LegacyDHEKeyExchange() throws Exception {
+ Exception startException = null;
+ try {
+ if (separateServerThread) {
+ startServer(true);
+ startClient(false);
+ } else {
+ startClient(true);
+ startServer(false);
+ }
+ } catch (Exception e) {
+ startException = e;
+ }
+
+ /*
+ * Wait for other side to close down.
+ */
+ if (separateServerThread) {
+ if (serverThread != null) {
+ serverThread.join();
+ }
+ } else {
+ if (clientThread != null) {
+ clientThread.join();
+ }
+ }
+
+ /*
+ * When we get here, the test is pretty much over.
+ * Which side threw the error?
+ */
+ Exception local;
+ Exception remote;
+
+ if (separateServerThread) {
+ remote = serverException;
+ local = clientException;
+ } else {
+ remote = clientException;
+ local = serverException;
+ }
+
+ Exception exception = null;
+
+ /*
+ * Check various exception conditions.
+ */
+ if ((local != null) && (remote != null)) {
+ // If both failed, return the curthread's exception.
+ local.initCause(remote);
+ exception = local;
+ } else if (local != null) {
+ exception = local;
+ } else if (remote != null) {
+ exception = remote;
+ } else if (startException != null) {
+ exception = startException;
+ }
+
+ /*
+ * If there was an exception *AND* a startException,
+ * output it.
+ */
+ if (exception != null) {
+ if (exception != startException && startException != null) {
+ exception.addSuppressed(startException);
+ }
+ throw exception;
+ }
+
+ // Fall-through: no exception to throw!
+ }
+
+ void startServer(boolean newThread) throws Exception {
+ if (newThread) {
+ serverThread = new Thread() {
+ @Override
+ public void run() {
+ try {
+ doServerSide();
+ } catch (Exception e) {
+ /*
+ * Our server thread just died.
+ *
+ * Release the client, if not active already...
+ */
+ System.err.println("Server died...");
+ serverReady = true;
+ serverException = e;
+ }
+ }
+ };
+ serverThread.start();
+ } else {
+ try {
+ doServerSide();
+ } catch (Exception e) {
+ serverException = e;
+ } finally {
+ serverReady = true;
+ }
+ }
+ }
+
+ void startClient(boolean newThread) throws Exception {
+ if (newThread) {
+ clientThread = new Thread() {
+ @Override
+ public void run() {
+ try {
+ doClientSide();
+ } catch (Exception e) {
+ /*
+ * Our client thread just died.
+ */
+ System.err.println("Client died...");
+ clientException = e;
+ }
+ }
+ };
+ clientThread.start();
+ } else {
+ try {
+ doClientSide();
+ } catch (Exception e) {
+ clientException = e;
+ }
+ }
+ }
+}