undefect. CWE-407 — 63 sites patched across 27 ecosystems

Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.

test/jdk/java/net/MulticastSocket/SendPortZero.java

@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2020, 2025, 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.
+ */
+
+import org.testng.annotations.AfterTest;
+import org.testng.annotations.BeforeTest;
+import org.testng.annotations.DataProvider;
+import org.testng.annotations.Test;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.MulticastSocket;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.MulticastSocket;
+import java.net.SocketException;
+import java.nio.channels.DatagramChannel;
+
+import static org.testng.Assert.assertThrows;
+
+/*
+ * @test
+ * @bug 8243408
+ * @summary Check that MulticastSocket throws expected
+ *          Exception when sending a DatagramPacket with port 0
+ * @run testng/othervm SendPortZero
+ */
+
+public class SendPortZero {
+    private InetAddress loopbackAddr, wildcardAddr;
+    private MulticastSocket multicastSocket;
+    private DatagramPacket loopbackZeroPkt, wildcardZeroPkt, wildcardValidPkt;
+
+    private static final Class<SocketException> SE = SocketException.class;
+
+    @BeforeTest
+    public void setUp() throws IOException {
+        multicastSocket = new MulticastSocket();
+
+        byte[] buf = "test".getBytes();
+
+        // Addresses
+        loopbackAddr = InetAddress.getLoopbackAddress();
+        wildcardAddr = new InetSocketAddress(0).getAddress();
+
+        // Packets
+        // loopback w/port 0
+        loopbackZeroPkt = new DatagramPacket(buf, 0, buf.length);
+        loopbackZeroPkt.setAddress(loopbackAddr);
+        loopbackZeroPkt.setPort(0);
+
+        // wildcard w/port 0
+        wildcardZeroPkt = new DatagramPacket(buf, 0, buf.length);
+        wildcardZeroPkt.setAddress(wildcardAddr);
+        wildcardZeroPkt.setPort(0);
+
+        // wildcard addr w/valid port
+        // Not currently tested. See JDK-8236807
+        wildcardValidPkt = new DatagramPacket(buf, 0, buf.length);
+        wildcardValidPkt.setAddress(wildcardAddr);
+        wildcardValidPkt.setPort(multicastSocket.getLocalPort());
+    }
+
+    @DataProvider(name = "data")
+    public Object[][] variants() {
+        return new Object[][]{
+                { multicastSocket,       loopbackZeroPkt },
+                { multicastSocket,       wildcardZeroPkt },
+                // Not currently tested. See JDK-8236807
+                //{ multicastSocket,       wildcardValidPkt }
+        };
+    }
+
+    @Test(dataProvider = "data")
+    public void testSend(MulticastSocket ms, DatagramPacket pkt) {
+        assertThrows(SE, () -> ms.send(pkt));
+    }
+
+    @AfterTest
+    public void tearDown() {
+        multicastSocket.close();
+    }
+}