This is a configuration question that belongs on the users list, not the
dev list.
Mark
On 29/07/2016 16:06, Bryan Anderson wrote:
> I have spent the past few days troubleshooting an SSL handshake issue with
> JDK 1.6 clients connecting to SOAP Web Services running on Tomcat 7.0.69/JDK
> 1.7.0_101/RHEL 6.7. These clients worked fine with Tomcat 7.0.68, so I
> checked the change log for 7.0.69. It mentions:
>
> Limit the default TLS ciphers for JSSE (BIO, NIO) and OpenSSL (APR) to this
> currently considered secure. (markt)
>
> We are configured to use the AprLifecycleListener for our SSL Listener.
>
> What is occurring is the Web Service clients who run JDK 1.6 (both Oracle and
> IBM clients experience this) cannot connect because none of the ciphers
> Tomcat presents are supported. In Tomcat 7.0.68 (and 8.0.36), the following
> cipher gets selected through SSL negotiation for JDK 1.6 clients:
> SSL_RSA_WITH_AES_128_CBC_SHA.
>
> I compared the source code from .68 and .69, and found this change in
> JSSESocketFactory.java - Line 200-208:
>
> // Remove kRSA ciphers when running on Java 7 or above. Can't
> // remove them for Java 6 since they are likely to be the only
> // ones left
> if (JreCompat.isJre7Available() &&
> (cipher.toUpperCase(Locale.ENGLISH).startsWith("TLS_RSA_") ||
> cipher.toUpperCase(Locale.ENGLISH).startsWith("SSL_RSA_"))) {
> log.debug(sm.getString("jsse.excludeDefaultCipher", cipher));
> continue;
> }
>
> This code appears to remove the working cipher used for JDK 1.6 clients -
> SSL_RSA_WITH_AES_128_CBC_SHA. This code only considers the JRE Tomcat is
> running, but does not/cannot consider what JRE the client is using. I tested
> this with a JDK 1.7 client and it works fine because they select the
> TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA cipher. This may not be an issue for
> UI/Browser Apps or applications connecting through a Web Server, but it has a
> signifiant impact on Java-based Web Service clients. I could not find any
> work arounds other then to revert to Tomcat 7.0.68 and plan to upgrade to
> Tomcat 8 in the near future.
>
> Hoping this is something that can either be removed or configured in future
> releases.
>
> Thanks much for your support!
>
> Bryan Anderson
>
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