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/io/Serializable/misplacedArrayClassDesc/MisplacedArrayClassDesc.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2005, 2019, 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 6313687
+ * @summary Verify that if the class descriptor for an ordinary object is the
+ *          descriptor for an array class, an ObjectStreamException is thrown.
+ *
+ */
+
+import java.io.*;
+
+class TestArray implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    // size of array
+    private static final int ARR_SIZE = 5;
+    // serializable field
+    private String[] strArr = new String[ARR_SIZE];
+
+    public TestArray() {
+        for (int i = 0; i < ARR_SIZE; i++) {
+            strArr[i] = "test" + i;
+        }
+    }
+}
+
+public class MisplacedArrayClassDesc {
+    public static final void main(String[] args) throws Exception {
+       System.err.println("\nRegression test for CR6313687");
+       TestArray object = new TestArray();
+       try {
+           // Serialize to a byte array
+           ByteArrayOutputStream bos = new ByteArrayOutputStream() ;
+           ObjectOutputStream out = new ObjectOutputStream(bos) ;
+           out.writeObject(object);
+           out.close();
+
+           // Get the bytes of the serialized object
+           byte[] buf = bos.toByteArray();
+           for (int i = 0; i < buf.length; i++) {
+               if (buf[i] == ObjectOutputStream.TC_ARRAY) {
+                   buf[i] = ObjectOutputStream.TC_OBJECT;
+                   break;
+               }
+           }
+
+           // Deserialize from a byte array
+           ByteArrayInputStream bais = new ByteArrayInputStream(buf);
+           ObjectInputStream in = new ObjectInputStream(bais);
+           TestArray ta = (TestArray) in.readObject();
+           in.close();
+       } catch (InstantiationError e) {
+            throw new Error();
+       } catch (InvalidClassException e) {
+            System.err.println("\nTest passed");
+            return;
+       }
+       throw new Error();
+    }
+}