How do I disable TLS 1.3 when running DS 6.5, 6.5.1 and 6.5.2 with Java 11?

Overview

Java 11 introduced support for TLS 1.3 and its associated cipher suites; DS 6.5 introduced support for Java 11.

DS has been designed to leverage the latest security features enabled by the JVM; therefore, TLS 1.3 is enabled by default when running DS with Java 11. If a client application is using TLS 1.3, the TLS session will negotiate to use TLS 1.3 by default.

However, Java 11's TLS 1.3 implementation has several issues in earlier versions, for example:

• JDK-8217094 - HttpClient SSL race if a socket IOException is raised before ALPN is available (Fixed in Java 11.0.4)
• JDK-8217610 - TLSv1.3 fail with ClassException when EC keys are stored in PKCS11 (Fixed in Java 11.0.6)
• JDK-8217611 - PKCS11 module unable to negotiate TLSv1.3 with RSASSA-PSS (Fixed in Java 11.0.6)

And there are known issues in DS 6.5, 6.5.1 and 6.5.2 (fixed in DS 6.5.3):

• OPENDJ-6557 (IDM Password Sync plugin induces 100% CPU in Apache Http Components when used with JDK 11)
• OPENDJ-6499 (Query on rest2ldap over ssl gets stuck after few curl requests using TLSv1.3 on JDK11)

Additionally, there is an outstanding known issue with the ChaCha20-Poly1305 algorithm (introduced in Java 9 and TLS 1.2): JDK-8224997 - ChaCha20-Poly1305 TLS cipher suite decryption throws ShortBufferException 

Disabling TLS 1.3 in DS

You can disable TLS 1.3 in DS by explicitly listing the ssl-protocols allowed per connection handler. It is strongly recommended that you restrict the allowed protocols to TLSv1.2 on the following connection handlers: LDAP, LDAPS, HTTPS and the Administrator Connector. For example:

• LDAP:

  $ ./dsconfig --hostname ds1.example.com --port 4444 --bindDN "cn=Directory Manager" --bindPassword password set-connection-handler-prop --handler-name LDAP --set ssl-protocol:TLSv1.2 --trustAll --no-prompt

• LDAPS:

  $ ./dsconfig --hostname ds1.example.com --port 4444 --bindDN "cn=Directory Manager" --bindPassword password set-connection-handler-prop --handler-name LDAPS --set ssl-protocol:TLSv1.2 --trustAll --no-prompt

• HTTPS:

  $ ./dsconfig --hostname ds1.example.com --port 4444 --bindDN "cn=Directory Manager" --bindPassword password set-connection-handler-prop --handler-name HTTPS --set ssl-protocol:TLSv1.2 --trustAll --no-prompt
  

• Administrator Connector:

  $ ./dsconfig --hostname ds1.example.com --port 4444 --bindDN "cn=Directory Manager" --bindPassword password set-administration-connector-prop --set ssl-protocol:TLSv1.2 --trustAll --no-prompt

See Also

How do I configure LDAPS clients in DS/OpenDJ (All versions)?

SSL in DS/OpenDJ

Administration Guide › LDAP Client Access Over SSL

Administration Guide › TLS Protocols and Cipher Suites

Related Training

N/A

Related Issue Tracker IDs

OPENDJ-6557 (IDM Password Sync plugin induces 100% CPU in Apache Http Components when used with JDK 11)

OPENDJ-6499 (Query on rest2ldap over ssl gets stuck after few curl requests using TLSv1.3 on JDK11)