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/com/sun/net/httpserver/bugs/B8211420.java

@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 2018, 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.
+ */
+
+import com.sun.net.httpserver.*;
+
+import java.util.*;
+import java.util.concurrent.*;
+import java.util.logging.*;
+import java.io.*;
+import java.net.*;
+
+import jdk.test.lib.net.URIBuilder;
+import static com.sun.net.httpserver.HttpExchange.RSPBODY_EMPTY;
+
+/*
+ * @test
+ * @bug 8211420
+ * @library /test/lib
+ * @comment We use othervm because this test configures logging handlers
+ *          for the system wide "com.sun.net.httpserver" logger
+ * @run main/othervm ${test.main.class}
+ * @run main/othervm -Djava.net.preferIPv6Addresses=true ${test.main.class}
+ * @summary
+ */
+public class B8211420 {
+
+    private static final Logger logger = Logger.getLogger("com.sun.net.httpserver");
+
+    private static void setupLogging() {
+        final ConsoleHandler c = new ConsoleHandler();
+        c.setLevel(Level.WARNING);
+        logger.addHandler(c);
+        logger.setLevel(Level.WARNING);
+    }
+
+    public static void main(String[] args) throws Exception {
+        setupLogging(); // merely for debugging
+        Handler handler = new Handler();
+        InetAddress loopback = InetAddress.getLoopbackAddress();
+        InetSocketAddress addr = new InetSocketAddress(loopback, 0);
+        HttpServer server = HttpServer.create(addr, 0);
+        HttpContext ctx = server.createContext("/test", handler);
+        ExecutorService executor = Executors.newCachedThreadPool();
+        server.setExecutor(executor);
+        server.start();
+
+        URL url = URIBuilder.newBuilder()
+                            .scheme("http")
+                            .host(server.getAddress().getAddress())
+                            .port(server.getAddress().getPort())
+                            .path("/test/foo.html")
+                            .toURL();
+        HttpURLConnection urlc = (HttpURLConnection)url.openConnection(Proxy.NO_PROXY);
+        try {
+            InputStream is = urlc.getInputStream();
+            while (is.read()!= -1) ;
+            is.close ();
+            String prop = urlc.getHeaderField("Content-length");
+                System.out.println("Content-length = " + prop + " should be null");
+            if (prop != null)
+                throw new RuntimeException("Content-length was present");
+
+            urlc = (HttpURLConnection)url.openConnection(Proxy.NO_PROXY);
+            is = urlc.getInputStream();
+            while (is.read()!= -1) ;
+            is.close();
+            if (urlc.getResponseCode() != 304) // expected for 2nd test
+                throw new RuntimeException("wrong response code");
+            String clen = urlc.getHeaderField("Content-length");
+            System.out.println("Content-length = " + clen + " should be 99");
+            System.out.println("len = " + clen.length());
+            if (clen == null || !clen.equals("99"))
+                throw new RuntimeException("Content-length not present or has wrong value");
+            System.out.println("OK");
+        } finally {
+            server.stop(0);
+            executor.shutdown();
+        }
+    }
+
+    public static boolean error = false;
+
+    static class Handler implements HttpHandler {
+        volatile int invocation = 1;
+        public void handle (HttpExchange t)
+            throws IOException
+        {
+            InputStream is = t.getRequestBody();
+            Headers map = t.getRequestHeaders();
+            Headers rmap = t.getResponseHeaders();
+            while (is.read() != -1) ;
+            is.close();
+            if (invocation++ == 1) {
+                // send a 204 response with no body
+                t.sendResponseHeaders(204, RSPBODY_EMPTY);
+                t.close();
+            } else {
+                // send a 304 response with no body but with content - length
+                rmap.add("Content-length", "99");
+                t.sendResponseHeaders(304, RSPBODY_EMPTY);
+                t.close();
+            }
+        }
+    }
+}