19

我们在 android 中编写了客户端应用程序，它使用 HttpsUrlConnection API 与 https 服务器连接。由于 Poodle 漏洞，我们需要在调用任何请求时从启用的协议列表中禁用 SSLv3。

我们遵循了oracle 捕获的准则

并在调用 url 连接之前添加了以下行

java.lang.System.setProperty("https.protocols", "TLSv1");

该解决方案适用于普通的 java 程序。
当我们SSLHandShakeException尝试连接仅适用于 SSLv3 协议的服务器时，我们得到了。

但问题是：同样的修复不适用于 android。我是否遗漏了什么，或者我应该为 android 尝试另一种方法？请建议。

4

8 回答 8

46

我通过使用wireshark分析数据包找到了解决方案。我发现，在建立安全连接时，android从TLSv1回退到SSLv3。这是 android 版本 < 4.4 中的错误，可以通过从 Enabled Protocols 列表中删除 SSLv3 协议来解决。我制作了一个名为 NoSSLv3SocketFactory.java 的自定义 socketFactory 类。使用它来制作socketfactory。

/*Copyright 2015 Bhavit Singh Sengar
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.*/

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.SocketAddress;
import java.net.SocketException;
import java.nio.channels.SocketChannel;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javax.net.ssl.HandshakeCompletedListener;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;


public class NoSSLv3SocketFactory extends SSLSocketFactory{
    private final SSLSocketFactory delegate;

public NoSSLv3SocketFactory() {
    this.delegate = HttpsURLConnection.getDefaultSSLSocketFactory();
}

public NoSSLv3SocketFactory(SSLSocketFactory delegate) {
    this.delegate = delegate;
}

@Override
public String[] getDefaultCipherSuites() {
    return delegate.getDefaultCipherSuites();
}

@Override
public String[] getSupportedCipherSuites() {
    return delegate.getSupportedCipherSuites();
}

private Socket makeSocketSafe(Socket socket) {
    if (socket instanceof SSLSocket) {
        socket = new NoSSLv3SSLSocket((SSLSocket) socket);
    }
    return socket;
}

@Override
public Socket createSocket(Socket s, String host, int port, boolean autoClose) throws IOException {
    return makeSocketSafe(delegate.createSocket(s, host, port, autoClose));
}

@Override
public Socket createSocket(String host, int port) throws IOException {
    return makeSocketSafe(delegate.createSocket(host, port));
}

@Override
public Socket createSocket(String host, int port, InetAddress localHost, int localPort) throws IOException {
    return makeSocketSafe(delegate.createSocket(host, port, localHost, localPort));
}

@Override
public Socket createSocket(InetAddress host, int port) throws IOException {
    return makeSocketSafe(delegate.createSocket(host, port));
}

@Override
public Socket createSocket(InetAddress address, int port, InetAddress localAddress, int localPort) throws IOException {
    return makeSocketSafe(delegate.createSocket(address, port, localAddress, localPort));
}

private class NoSSLv3SSLSocket extends DelegateSSLSocket {

    private NoSSLv3SSLSocket(SSLSocket delegate) {
        super(delegate);

    }

    @Override
    public void setEnabledProtocols(String[] protocols) {
        if (protocols != null && protocols.length == 1 && "SSLv3".equals(protocols[0])) {

            List<String> enabledProtocols = new ArrayList<String>(Arrays.asList(delegate.getEnabledProtocols()));
            if (enabledProtocols.size() > 1) {
                enabledProtocols.remove("SSLv3");
                System.out.println("Removed SSLv3 from enabled protocols");
            } else {
                System.out.println("SSL stuck with protocol available for " + String.valueOf(enabledProtocols));
            }
            protocols = enabledProtocols.toArray(new String[enabledProtocols.size()]);
        }

        super.setEnabledProtocols(protocols);
    }
}

public class DelegateSSLSocket extends SSLSocket {

    protected final SSLSocket delegate;

    DelegateSSLSocket(SSLSocket delegate) {
        this.delegate = delegate;
    }

    @Override
    public String[] getSupportedCipherSuites() {
        return delegate.getSupportedCipherSuites();
    }

    @Override
    public String[] getEnabledCipherSuites() {
        return delegate.getEnabledCipherSuites();
    }

    @Override
    public void setEnabledCipherSuites(String[] suites) {
        delegate.setEnabledCipherSuites(suites);
    }

    @Override
    public String[] getSupportedProtocols() {
        return delegate.getSupportedProtocols();
    }

    @Override
    public String[] getEnabledProtocols() {
        return delegate.getEnabledProtocols();
    }

    @Override
    public void setEnabledProtocols(String[] protocols) {
        delegate.setEnabledProtocols(protocols);
    }

    @Override
    public SSLSession getSession() {
        return delegate.getSession();
    }

    @Override
    public void addHandshakeCompletedListener(HandshakeCompletedListener listener) {
        delegate.addHandshakeCompletedListener(listener);
    }

    @Override
    public void removeHandshakeCompletedListener(HandshakeCompletedListener listener) {
        delegate.removeHandshakeCompletedListener(listener);
    }

    @Override
    public void startHandshake() throws IOException {
        delegate.startHandshake();
    }

    @Override
    public void setUseClientMode(boolean mode) {
        delegate.setUseClientMode(mode);
    }

    @Override
    public boolean getUseClientMode() {
        return delegate.getUseClientMode();
    }

    @Override
    public void setNeedClientAuth(boolean need) {
        delegate.setNeedClientAuth(need);
    }

    @Override
    public void setWantClientAuth(boolean want) {
        delegate.setWantClientAuth(want);
    }

    @Override
    public boolean getNeedClientAuth() {
        return delegate.getNeedClientAuth();
    }

    @Override
    public boolean getWantClientAuth() {
        return delegate.getWantClientAuth();
    }

    @Override
    public void setEnableSessionCreation(boolean flag) {
        delegate.setEnableSessionCreation(flag);
    }

    @Override
    public boolean getEnableSessionCreation() {
        return delegate.getEnableSessionCreation();
    }

    @Override
    public void bind(SocketAddress localAddr) throws IOException {
        delegate.bind(localAddr);
    }

    @Override
    public synchronized void close() throws IOException {
        delegate.close();
    }

    @Override
    public void connect(SocketAddress remoteAddr) throws IOException {
        delegate.connect(remoteAddr);
    }

    @Override
    public void connect(SocketAddress remoteAddr, int timeout) throws IOException {
        delegate.connect(remoteAddr, timeout);
    }

    @Override
    public SocketChannel getChannel() {
        return delegate.getChannel();
    }

    @Override
    public InetAddress getInetAddress() {
        return delegate.getInetAddress();
    }

    @Override
    public InputStream getInputStream() throws IOException {
        return delegate.getInputStream();
    }

    @Override
    public boolean getKeepAlive() throws SocketException {
        return delegate.getKeepAlive();
    }

    @Override
    public InetAddress getLocalAddress() {
        return delegate.getLocalAddress();
    }

    @Override
    public int getLocalPort() {
        return delegate.getLocalPort();
    }

    @Override
    public SocketAddress getLocalSocketAddress() {
        return delegate.getLocalSocketAddress();
    }

    @Override
    public boolean getOOBInline() throws SocketException {
        return delegate.getOOBInline();
    }

    @Override
    public OutputStream getOutputStream() throws IOException {
        return delegate.getOutputStream();
    }

    @Override
    public int getPort() {
        return delegate.getPort();
    }

    @Override
    public synchronized int getReceiveBufferSize() throws SocketException {
        return delegate.getReceiveBufferSize();
    }

    @Override
    public SocketAddress getRemoteSocketAddress() {
        return delegate.getRemoteSocketAddress();
    }

    @Override
    public boolean getReuseAddress() throws SocketException {
        return delegate.getReuseAddress();
    }

    @Override
    public synchronized int getSendBufferSize() throws SocketException {
        return delegate.getSendBufferSize();
    }

    @Override
    public int getSoLinger() throws SocketException {
        return delegate.getSoLinger();
    }

    @Override
    public synchronized int getSoTimeout() throws SocketException {
        return delegate.getSoTimeout();
    }

    @Override
    public boolean getTcpNoDelay() throws SocketException {
        return delegate.getTcpNoDelay();
    }

    @Override
    public int getTrafficClass() throws SocketException {
        return delegate.getTrafficClass();
    }

    @Override
    public boolean isBound() {
        return delegate.isBound();
    }

    @Override
    public boolean isClosed() {
        return delegate.isClosed();
    }

    @Override
    public boolean isConnected() {
        return delegate.isConnected();
    }

    @Override
    public boolean isInputShutdown() {
        return delegate.isInputShutdown();
    }

    @Override
    public boolean isOutputShutdown() {
        return delegate.isOutputShutdown();
    }

    @Override
    public void sendUrgentData(int value) throws IOException {
        delegate.sendUrgentData(value);
    }

    @Override
    public void setKeepAlive(boolean keepAlive) throws SocketException {
        delegate.setKeepAlive(keepAlive);
    }

    @Override
    public void setOOBInline(boolean oobinline) throws SocketException {
        delegate.setOOBInline(oobinline);
    }

    @Override
    public void setPerformancePreferences(int connectionTime, int latency, int bandwidth) {
        delegate.setPerformancePreferences(connectionTime, latency, bandwidth);
    }

    @Override
    public synchronized void setReceiveBufferSize(int size) throws SocketException {
        delegate.setReceiveBufferSize(size);
    }

    @Override
    public void setReuseAddress(boolean reuse) throws SocketException {
        delegate.setReuseAddress(reuse);
    }

    @Override
    public synchronized void setSendBufferSize(int size) throws SocketException {
        delegate.setSendBufferSize(size);
    }

    @Override
    public void setSoLinger(boolean on, int timeout) throws SocketException {
        delegate.setSoLinger(on, timeout);
    }

    @Override
    public synchronized void setSoTimeout(int timeout) throws SocketException {
        delegate.setSoTimeout(timeout);
    }

    @Override
    public void setTcpNoDelay(boolean on) throws SocketException {
        delegate.setTcpNoDelay(on);
    }

    @Override
    public void setTrafficClass(int value) throws SocketException {
        delegate.setTrafficClass(value);
    }

    @Override
    public void shutdownInput() throws IOException {
        delegate.shutdownInput();
    }

    @Override
    public void shutdownOutput() throws IOException {
        delegate.shutdownOutput();
    }

    @Override
    public String toString() {
        return delegate.toString();
    }

    @Override
    public boolean equals(Object o) {
        return delegate.equals(o);
    }
}
}

连接时像这样使用这个类：

SSLContext sslcontext = SSLContext.getInstance("TLSv1");

            sslcontext.init(null,
                    null,
                    null);
            SSLSocketFactory NoSSLv3Factory = new NoSSLv3SocketFactory(sslcontext.getSocketFactory());

            HttpsURLConnection.setDefaultSSLSocketFactory(NoSSLv3Factory);
            l_connection = (HttpsURLConnection) l_url.openConnection();
            l_connection.connect();

更新 ：

现在，正确的解决方案是使用Google Play Services安装更新的安全提供程序：

    ProviderInstaller.installIfNeeded(getApplicationContext());

这有效地使您的应用程序可以访问更新版本的 OpenSSL 和 Java 安全提供程序，其中包括对 SSLEngine 中的 TLSv1.2 的支持。安装新的提供程序后，您可以按通常的方式创建支持 SSLv3、TLSv1、TLSv1.1 和 TLSv1.2 的 SSLEngine：

    SSLContext sslContext = SSLContext.getInstance("TLSv1.2");
    sslContext.init(null, null, null);
    SSLEngine engine = sslContext.createSSLEngine();

或者您可以使用 限制启用的协议engine.setEnabledProtocols。

不要忘记添加以下依赖项（在此处找到最新版本）：

compile 'com.google.android.gms:play-services-auth:11.8.0'

有关更多信息，请查看此链接。

于 2015-04-29T14:22:19.330 回答
15

受 Bhavit S. Sengar答案的启发，它将该技术捆绑到一个死的简单方法调用中。使用Android的HttpsURLConnection. NetCipher 将HttpsURLConnection实例配置为使用受支持的最佳 TLS 版本，删除 SSLv3 支持，并为该 TLS 版本配置最佳密码套件。首先，将其添加到您的build.gradle：

compile 'info.guardianproject.netcipher:netcipher:1.2'

或者您可以下载netcipher-1.2.jar并将其直接包含在您的应用程序中。然后代替调用：

HttpURLConnection connection = (HttpURLConnection) sourceUrl.openConnection();

调用这个：

HttpsURLConnection connection = NetCipher.getHttpsURLConnection(sourceUrl);
于 2015-09-08T20:23:51.007 回答
6

起初我尝试了 Bhavit S. Sengar 的答案，它适用于大多数情况。但有时即使在 Android 4.4.4 设备上从启用的协议中删除 SSLv3 协议时也会出现问题。因此，Hans-Christoph Steiner 的NetCipher库在我可以测试的范围内非常适合解决这个问题。

我们使用jsoup在不同的服务器上进行了一堆网络抓取，所以我们不能设置HttpsURLConnection connection = NetCipher.getHttpsURLConnection(sourceUrl);. 如果您使用 OkHttp，我认为这是同样的问题。

我们找到的最佳解决方案是将info.guardianproject.netcipher.client.TlsOnlySocketFactory来自 NetCipher 的设置为DefaultSSLSocketFactory静态块。所以它是为我们应用程序的整个运行时设置的： 

SSLContext sslcontext = SSLContext.getInstance("TLSv1");
sslcontext.init(null, null, null);
SSLSocketFactory noSSLv3Factory = new TlsOnlySocketFactory(sc.getSocketFactory());
HttpsURLConnection.setDefaultSSLSocketFactory(noSSLv3Factory);

如果您想查看完整的详细信息（使用trustAllCertificates），您可以在此处进行。

于 2016-01-20T16:01:30.467 回答
4

使用此代码片段，如果服务器启用 SSLv3，则握手将失败。 

        SocketFactory sf = SSLSocketFactory.getDefault();
        SSLSocket socket = (SSLSocket) sf.createSocket("host-name", 443);
        socket.setEnabledProtocols(new String[] { "TLSv1"});
        socket.startHandshake();
于 2014-10-30T12:27:39.927 回答
0 
 SSLContext sslContext = SSLContext.getInstance("TLSv1");
                sslContext.init(null, null, null);
                SSLSocketFactory socketFactory = sslContext.getSocketFactory();
                            httpURLConnection.setSSLSocketFactory(socketFactory);

HttpsURLConnection 使用 TSL 创建安全失败，Android 实现将回退到 SSLV3 来连接。

请参考这个http://code.google.com/p/android/issues/detail?id=78431

于 2015-04-16T10:31:36.017 回答
0

与 https 服务器连接，我们需要来自客户端的握手证书。一年前，我通过以下方式使用自签名证书解决了类似的问题-

import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.cert.X509Certificate;

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

public class HttpsTrustManager implements X509TrustManager {

private static TrustManager[] trustManagers;
private static final X509Certificate[] _AcceptedIssuers = new X509Certificate[]{};

@Override
public void checkClientTrusted(
        java.security.cert.X509Certificate[] x509Certificates, String s)
        throws java.security.cert.CertificateException {

}

@Override
public void checkServerTrusted(
        java.security.cert.X509Certificate[] x509Certificates, String s)
        throws java.security.cert.CertificateException {

}

public boolean isClientTrusted(X509Certificate[] chain) {
    return true;
}

public boolean isServerTrusted(X509Certificate[] chain) {
    return true;
}

@Override
public X509Certificate[] getAcceptedIssuers() {
    return _AcceptedIssuers;
}

public static void allowAllSSL() {
    HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {

        @Override
        public boolean verify(String arg0, SSLSession arg1) {
            return true;
        }

    });

    SSLContext context = null;
    if (trustManagers == null) {
        trustManagers = new TrustManager[]{new HttpsTrustManager()};
    }

    try {
        context = SSLContext.getInstance("TLS");
        context.init(null, trustManagers, new SecureRandom());
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (KeyManagementException e) {
        e.printStackTrace();
    }

    HttpsURLConnection.setDefaultSSLSocketFactory(context
            .getSocketFactory());
}

}

HttpsUrlConnection 之前在客户端的使用

HttpsTrustManager.allowAllSSL();

希望它会工作:)

于 2016-11-30T11:07:56.443 回答
0

使用在 Android 上运行的PlayService 发布者客户端库，我在运行示例时遇到了同样的问题。

用上面的 @bhavit-s-sengar 的 awnser 修复它。也不得不改变AndroidPublisherHelper.newTrustedTransport()这个：

SSLContext sslcontext = SSLContext.getInstance("TLSv1");
sslcontext.init(null, null, null);
//  NoSSLv3SocketFactory is @bhavit-s-sengar's http://stackoverflow.com/a/29946540/8524
SSLSocketFactory noSSLv3Factory = new NoSSLv3SocketFactory(sslcontext.getSocketFactory());

NetHttpTransport.Builder netTransportBuilder = new NetHttpTransport.Builder();
netTransportBuilder.setSslSocketFactory(noSSLv3Factory);
HTTP_TRANSPORT = netTransportBuilder.build();
于 2015-09-03T09:31:12.917 回答
0

实际上我们不需要禁用 SSLV3 或 TLSV1.0，我们只需要在 android < 5 设备中启用 TLSV1.1 或 TLSv1.2。

问题是 TLSv1.1 和 TLSv1.2 默认未在 Android <5 上启用，要使用这些最新的安全协议进行连接，我们必须在 Android <5 设备中启用。

这个解决方案解决了我的问题：https ://stackoverflow.com/a/45853669/3448003

于 2017-08-24T07:19:55.997 回答