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Posted to commits@activemq.apache.org by cs...@apache.org on 2026/05/20 16:05:52 UTC
(activemq) branch activemq-5.19.x updated: Remove "java.lang" package as a default allowed serializable package (#2026) (#2028)
This is an automated email from the ASF dual-hosted git repository.
cshannon pushed a commit to branch activemq-5.19.x
in repository https://gitbox.apache.org/repos/asf/activemq.git
The following commit(s) were added to refs/heads/activemq-5.19.x by this push:
new 4e49fbd0f2 Remove "java.lang" package as a default allowed serializable package (#2026) (#2028)
4e49fbd0f2 is described below
commit 4e49fbd0f2789d9ae8fedeb61eb9e71f555bc8b2
Author: Christopher L. Shannon <cs...@apache.org>
AuthorDate: Wed May 20 12:05:46 2026 -0400
Remove "java.lang" package as a default allowed serializable package (#2026) (#2028)
Many classes in the java.lang package should not ever need to be
serialized so this commit removes the default package and instead
includes an allow list of classes that are ok to serialize that are
part of the package. Users have the option to restore the previous
behavior by appending "java.lang" back to the serialized packages
property if desired.
(cherry picked from commit e9ed448c9905b117566a9cd653f4206117e5243f)
---
.../util/ClassLoadingAwareObjectInputStream.java | 12 +++--
.../org/apache/activemq/util/XStreamSupport.java | 5 +-
.../ClassLoadingAwareObjectInputStreamTest.java | 34 ++++++++++---
.../apache/activemq/transport/stomp/StompTest.java | 56 ++++++++++++++++++++++
4 files changed, 97 insertions(+), 10 deletions(-)
diff --git a/activemq-client/src/main/java/org/apache/activemq/util/ClassLoadingAwareObjectInputStream.java b/activemq-client/src/main/java/org/apache/activemq/util/ClassLoadingAwareObjectInputStream.java
index 396b6502b7..fe30999063 100644
--- a/activemq-client/src/main/java/org/apache/activemq/util/ClassLoadingAwareObjectInputStream.java
+++ b/activemq-client/src/main/java/org/apache/activemq/util/ClassLoadingAwareObjectInputStream.java
@@ -32,15 +32,21 @@ public class ClassLoadingAwareObjectInputStream extends ObjectInputStream {
private static final ClassLoader FALLBACK_CLASS_LOADER =
ClassLoadingAwareObjectInputStream.class.getClassLoader();
+ public static final Set<Class<?>> ALLOWED_JDK_TYPES = Set.of(
+ Boolean.class, Short.class, Integer.class, Long.class,
+ Float.class, Double.class, String.class, Character.class, Byte.class,
+ Throwable.class, Exception.class, StackTraceElement.class);
+
+ public static final String DEFAULT_SERIALIZABLE_PACKAGES = "org.apache.activemq,org.fusesource.hawtbuf,com.thoughtworks.xstream.mapper";
public static final String[] serializablePackages;
- private List<String> trustedPackages = new ArrayList<String>();
+ private List<String> trustedPackages = new ArrayList<>();
private boolean trustAllPackages = false;
private final ClassLoader inLoader;
static {
- serializablePackages = System.getProperty("org.apache.activemq.SERIALIZABLE_PACKAGES","java.lang,org.apache.activemq,org.fusesource.hawtbuf,com.thoughtworks.xstream.mapper").split(",");
+ serializablePackages = System.getProperty("org.apache.activemq.SERIALIZABLE_PACKAGES", DEFAULT_SERIALIZABLE_PACKAGES).split(",");
}
public ClassLoadingAwareObjectInputStream(InputStream in) throws IOException {
@@ -98,7 +104,7 @@ public class ClassLoadingAwareObjectInputStream extends ObjectInputStream {
}
private void checkSecurity(Class clazz) throws ClassNotFoundException {
- if (trustAllPackages() || clazz.isPrimitive()) {
+ if (trustAllPackages() || clazz.isPrimitive() || ALLOWED_JDK_TYPES.contains(clazz)) {
return;
}
diff --git a/activemq-client/src/main/java/org/apache/activemq/util/XStreamSupport.java b/activemq-client/src/main/java/org/apache/activemq/util/XStreamSupport.java
index 0fe4cfe90f..50fdc9af6a 100644
--- a/activemq-client/src/main/java/org/apache/activemq/util/XStreamSupport.java
+++ b/activemq-client/src/main/java/org/apache/activemq/util/XStreamSupport.java
@@ -27,13 +27,16 @@ import java.util.Map;
public class XStreamSupport {
+ private static final Class<?>[] ALLOWED_JDK_TYPES =
+ ClassLoadingAwareObjectInputStream.ALLOWED_JDK_TYPES.toArray(new Class[0]);
+
public static XStream createXStream() {
XStream stream = new XStream();
stream.addPermission(NoTypePermission.NONE);
stream.addPermission(PrimitiveTypePermission.PRIMITIVES);
stream.allowTypeHierarchy(Collection.class);
stream.allowTypeHierarchy(Map.class);
- stream.allowTypes(new Class[]{String.class});
+ stream.allowTypes(ALLOWED_JDK_TYPES);
if (ClassLoadingAwareObjectInputStream.isAllAllowed()) {
stream.addPermission(AnyTypePermission.ANY);
} else {
diff --git a/activemq-client/src/test/java/org/apache/activemq/util/ClassLoadingAwareObjectInputStreamTest.java b/activemq-client/src/test/java/org/apache/activemq/util/ClassLoadingAwareObjectInputStreamTest.java
index 2e3e919ee4..ab256fb9d8 100644
--- a/activemq-client/src/test/java/org/apache/activemq/util/ClassLoadingAwareObjectInputStreamTest.java
+++ b/activemq-client/src/test/java/org/apache/activemq/util/ClassLoadingAwareObjectInputStreamTest.java
@@ -26,6 +26,7 @@ import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.util.Arrays;
+import java.util.Set;
import java.util.UUID;
import java.util.Vector;
@@ -206,8 +207,23 @@ public class ClassLoadingAwareObjectInputStreamTest {
}
@Test
- public void testReadObjectStringNotFiltered() throws Exception {
- doTestReadObject(new String(name.getMethodName()), ACCEPTS_NONE_FILTER);
+ public void testReadObjectJdkTypesNotFiltered() throws Exception {
+ for (String filter : Set.of(ACCEPTS_ALL_FILTER, ACCEPTS_NONE_FILTER,
+ ClassLoadingAwareObjectInputStream.DEFAULT_SERIALIZABLE_PACKAGES)) {
+ doTestReadObject(Boolean.TRUE, filter);
+ doTestReadObject("test", filter);
+ doTestReadObject(Byte.valueOf("0"), filter);
+ doTestReadObject(Character.valueOf('a'), filter);
+ doTestReadObject(Integer.valueOf(100), filter);
+ doTestReadObject(Long.valueOf(0), filter);
+ doTestReadObject(Float.valueOf(0), filter);
+ doTestReadObject(Double.valueOf(0), filter);
+ }
+
+ // these also require collections classes in java util as well as StackTraceElement
+ // they also can't be compared for equality as they don't implement equals
+ doTestReadObject(new Exception(), "java.util", false);
+ doTestReadObject(new Throwable(), "java.util", false);
}
//----- Test that primitive arrays get past filters ----------------------//
@@ -429,6 +445,10 @@ public class ClassLoadingAwareObjectInputStreamTest {
//----- Internal methods -------------------------------------------------//
private void doTestReadObject(Object value, String filter) throws Exception {
+ doTestReadObject(value, filter, true);
+ }
+
+ private void doTestReadObject(Object value, String filter, boolean equalityCheck) throws Exception {
byte[] serialized = serializeObject(value);
try (ByteArrayInputStream input = new ByteArrayInputStream(serialized);
@@ -441,10 +461,12 @@ public class ClassLoadingAwareObjectInputStreamTest {
Object result = reader.readObject();
assertNotNull(result);
assertEquals(value.getClass(), result.getClass());
- if (result.getClass().isArray()) {
- assertTrue(Arrays.deepEquals((Object[]) value, (Object[]) result));
- } else {
- assertEquals(value, result);
+ if (equalityCheck) {
+ if (result.getClass().isArray()) {
+ assertTrue(Arrays.deepEquals((Object[]) value, (Object[]) result));
+ } else {
+ assertEquals(value, result);
+ }
}
}
}
diff --git a/activemq-stomp/src/test/java/org/apache/activemq/transport/stomp/StompTest.java b/activemq-stomp/src/test/java/org/apache/activemq/transport/stomp/StompTest.java
index 89f591f1f6..4142e1fd66 100644
--- a/activemq-stomp/src/test/java/org/apache/activemq/transport/stomp/StompTest.java
+++ b/activemq-stomp/src/test/java/org/apache/activemq/transport/stomp/StompTest.java
@@ -1167,6 +1167,62 @@ public class StompTest extends StompTestSupport {
assertEquals("Dejan", object.getName());
}
+
+ @Test(timeout = 60000)
+ public void testTransformationReceiveXMLObjectDouble() throws Exception {
+ MessageConsumer consumer = session.createConsumer(queue);
+
+ String frame = "CONNECT\n" + "login:system\n" + "passcode:manager\n\n" + Stomp.NULL;
+ stompConnection.sendFrame(frame);
+
+ frame = stompConnection.receiveFrame();
+ assertTrue(frame.startsWith("CONNECTED"));
+
+ // Double should be allowed by default
+ frame = "SEND\n" + "destination:/queue/" + getQueueName() + "\n" +
+ "transformation:" + Stomp.Transformations.JMS_OBJECT_XML + "\n\n" +
+ "<java.lang.Double>1.1</java.lang.Double>" + Stomp.NULL;
+
+ stompConnection.sendFrame(frame);
+
+ Message message = consumer.receive(2500);
+ assertNotNull(message);
+
+ LOG.info("Broker sent: {}", message);
+
+ assertTrue(message instanceof ObjectMessage);
+ ObjectMessage objectMessage = (ObjectMessage)message;
+ Double object = (Double)objectMessage.getObject();
+ assertEquals(Double.valueOf(1.1), object);
+ }
+
+ @Test(timeout = 60000)
+ public void testTransformationSendXMLObjectNotAllowed() throws Exception {
+ MessageConsumer consumer = session.createConsumer(queue);
+
+ String frame = "CONNECT\n" + "login:system\n" + "passcode:manager\n\n" + Stomp.NULL;
+ stompConnection.sendFrame(frame);
+
+ frame = stompConnection.receiveFrame();
+ assertTrue(frame.startsWith("CONNECTED"));
+
+ // ProcessBuilder is not allowed by default so the conversion should fail and
+ // then fall back to using a TextMessage, as well as setting an error header
+ frame = "SEND\n" + "destination:/queue/" + getQueueName() + "\n" +
+ "transformation:" + Stomp.Transformations.JMS_OBJECT_XML + "\n\n" +
+ "<java.lang.ProcessBuilder><command><string>id</string></command></java.lang.ProcessBuilder>" + Stomp.NULL;
+
+ stompConnection.sendFrame(frame);
+
+ Message message = consumer.receive(2500);
+ assertNotNull(message);
+ LOG.info("Broker sent: {}", message);
+
+ // The message should be Text and marked with a transformation error header
+ assertTrue(message instanceof TextMessage);
+ assertEquals("java.lang.ProcessBuilder", message.getStringProperty("transformation-error"));
+ }
+
@Test(timeout = 60000)
public void testTransformationSubscribeXML() throws Exception {
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