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/httpclient/HttpResponseInputStreamInterruptTest.java

@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) 2022, 2026, 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.
+ */
+
+/**
+ * @test
+ * @bug 8294047
+ * @library /test/lib
+ * @run junit HttpResponseInputStreamInterruptTest
+ */
+
+import com.sun.net.httpserver.HttpExchange;
+import com.sun.net.httpserver.HttpHandler;
+import com.sun.net.httpserver.HttpServer;
+import jdk.test.lib.net.URIBuilder;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.util.concurrent.CountDownLatch;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
+
+public class HttpResponseInputStreamInterruptTest {
+
+    private static HttpServer server;
+    private static int port;
+    private static final CountDownLatch interruptReadyLatch = new CountDownLatch(2);
+    private static final CountDownLatch interruptDoneLatch = new CountDownLatch(1);
+    static final String FIRST_MESSAGE = "Should be received";
+    static final String SECOND_MESSAGE = "Shouldn't be received";
+
+    @BeforeAll
+    static void before() throws Exception {
+        InetAddress loopback = InetAddress.getLoopbackAddress();
+        InetSocketAddress addr = new InetSocketAddress(loopback, 0);
+        server = HttpServer.create(addr, 0);
+        port = server.getAddress().getPort();
+        Handler handler = new Handler(interruptReadyLatch, interruptDoneLatch);
+        server.createContext("/HttpResponseInputStreamInterruptTest/", handler);
+        server.start();
+    }
+
+    @AfterAll
+    static void after() throws Exception {
+        server.stop(0);
+    }
+
+    @Test
+    public void test() throws Exception {
+        // create client and interrupter threads
+        Thread clientThread = createClientThread(interruptReadyLatch, port);
+        Thread interrupterThread = new Thread(() -> {
+            try {
+                // wait until the clientThread is just about to read the second message sent by the server
+                // then interrupt the thread to cause an error to be thrown
+                interruptReadyLatch.await();
+                clientThread.interrupt();
+                interruptDoneLatch.countDown();
+            } catch (InterruptedException e) {
+                System.out.println("interrupterThread failed");
+                throw new RuntimeException(e);
+            }
+        });
+
+        // Start the threads then wait until clientThread completes
+        clientThread.start();
+        interrupterThread.start();
+        clientThread.join();
+    }
+
+    static class Handler implements HttpHandler {
+
+        CountDownLatch interruptReadyLatch;
+        CountDownLatch interruptDoneLatch;
+
+        public Handler(CountDownLatch interruptReadyLatch, CountDownLatch interruptDoneLatch) {
+            this.interruptReadyLatch = interruptReadyLatch;
+            this.interruptDoneLatch = interruptDoneLatch;
+        }
+
+        @Override
+        public void handle(HttpExchange exchange) throws IOException {
+            try (OutputStream os = exchange.getResponseBody()) {
+                byte[] workingResponse = FIRST_MESSAGE.getBytes();
+                byte[] errorResponse = SECOND_MESSAGE.getBytes();
+                exchange.sendResponseHeaders(200, workingResponse.length + errorResponse.length);
+
+                // write and flush the first message which is expected to be received successfully
+                os.write(workingResponse);
+                os.flush();
+
+                // await the interrupt threads completion, then write the second message
+                interruptReadyLatch.countDown();
+                interruptDoneLatch.await();
+                os.write(errorResponse);
+            } catch (InterruptedException e) {
+                System.out.println("interruptDoneLatch await failed");
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+    static Thread createClientThread(CountDownLatch interruptReadyLatch, int port) {
+        return new Thread(() -> {
+            try {
+                HttpClient client = HttpClient
+                        .newBuilder()
+                        .proxy(HttpClient.Builder.NO_PROXY)
+                        .build();
+
+                URI uri = URIBuilder.newBuilder()
+                        .scheme("http")
+                        .loopback()
+                        .port(port)
+                        .path("/HttpResponseInputStreamInterruptTest/")
+                        .build();
+
+                HttpRequest request = HttpRequest
+                        .newBuilder(uri)
+                        .GET()
+                        .build();
+
+                // Send a httpRequest and assert the first response is received as expected
+                HttpResponse<InputStream> response = client.send(request, HttpResponse.BodyHandlers.ofInputStream());
+                String firstOutput = new String(response.body().readNBytes(FIRST_MESSAGE.getBytes().length));
+                assertEquals(firstOutput, FIRST_MESSAGE);
+
+                // countdown on latch, and assert that an IOException is throw due to the interrupt
+                // and assert that the cause is a InterruptedException
+                interruptReadyLatch.countDown();
+                var thrown = assertThrows(IOException.class, () -> response.body().readAllBytes(), "expected IOException");
+                var cause = thrown.getCause();
+                assertTrue(cause instanceof InterruptedException, cause + " is not an InterruptedException");
+                var thread = Thread.currentThread();
+                assertTrue(thread.isInterrupted(), "Thread " + thread + " is not interrupted");
+            } catch (Throwable t) {
+                t.printStackTrace();
+                fail();
+            }
+        });
+    }
+}