如何在Jetty中不允许特定的SSL协议？

Question

我有一个web应用程序运行在Jetty 6+ Open 7上Debian6.0.7上。当客户端启动HTTPS连接时，我需要接受TLS握手，而不是SSLv3.0握手。

在我的jetty.xml中，我将协议设置为TLS：

<New class="org.mortbay.jetty.security.SslSocketConnector">
    <Set name="protocol">TLS</Set>
    ...

使用此配置，web服务器似乎仍然接受SSLv3.0握手。这已经通过'sslscan‘工具和运行'curl -sslv3 -kv {host}’进行了验证。

是否可以将Jetty配置为只接受TLS握手？如果需要，我愿意升级我的Jetty版本。

Answer 1

我找到了两个解决方案：

升级到Jetty 9，它支持jetty.xml条目：

<Arg name="sslContextFactory">
    ...
    <Set name="excludeProtocols">
      <Array type="java.lang.String">
        <Item>SSLv3</Item>
      </Array>
     </Set>

或者，使用Jetty 6为SslSocketConnector和SSLServerSocketFactory创建委托类：

jetty.xml:
  ...
  <New class="com.src.TlsSocketConnector">
    ...
  </New>

public class TlsSocketConnector extends SslSocketConnector  {
  @Override
  protected SSLServerSocketFactory createFactory() throws Exception {
    return new TlsServerSocketFactory( super.createFactory() );
  }
}

public class TlsServerSocketFactory extends SSLServerSocketFactory {

  private SSLServerSocketFactory delegate;

  public TlsServerSocketFactory( SSLServerSocketFactory delegate ) {
    this.delegate = delegate;
  }

  //Repeat this pattern for all createServerSocket() methods
  public ServerSocket createServerSocket() throws IOException {
    SSLServerSocket socket = (SSLServerSocket) delegate.createServerSocket();
    socket.setEnabledProtocols( new String[]{"TLSv1", "TLSv1.1", "TLSv1.2"});
    return socket;
  }

  // Directly delegated methods from SSLServerSocketFactory
  public String[] getDefaultCipherSuites() { return delegate.getDefaultCipherSuites(); }
  public String[] getSupportedCipherSuites() { return delegate.getSupportedCipherSuites(); }
}

Answer 2

对于Jetty 6，您还可以创建一个覆盖的SslSelectChannelConnector来删除SSLv3，如下所示：

package com.mycompany;

import java.io.IOException;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

import javax.net.ssl.SSLEngine;

import org.mortbay.jetty.security.SslSelectChannelConnector;

public class SslSelectChannelConnectorNoSsl3 extends SslSelectChannelConnector {

  @Override
  protected SSLEngine createSSLEngine() throws IOException {
    SSLEngine engine = super.createSSLEngine();
    Set<String> protocols = new HashSet<String>(Arrays.asList(engine.getEnabledProtocols()));
    protocols.removeAll(Arrays.asList("SSLv2Hello","SSLv3"));
    engine.setEnabledProtocols(protocols.toArray(new String[protocols.size()]));
    return engine;
  }

}

然后在jetty.xml中指定连接器，如下所示：

<Call name="addConnector">
 <Arg>
   <New class="com.mycompany.SslSelectChannelConnectorNoSsl3">
   ...
   </New>
 </Arg>
</Call>