Siteminder as OAuth client: javax.net.ssl.SSLException

Document ID : KB000102791
Last Modified Date : 20/06/2018
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Issue:
We are setting up Siteminder as OAuth client, but we get a Java exception in our FWSTrace.log when we try to recover the Access Token: 

[05/02/2018][08:45:53][20655][3415492352][1384abd9-79ccf279-9bcecd80-f2f6199d-b4388867-1][MessageDispatcher.java][dispatchMessage][Exception: 
javax.net.ssl.SSLException: Fatal Alert received: Handshake Failure. 

We have access to the OAuth authorization server's SSL configuration, which is as follows: 

SSLEngine on 
SSLHonorCipherOrder On 
SSLCipherSuite kEECDH+ECDSA:kEECDH:kEDH:HIGH:+SHA:!RSA:!3DES:!RC4:!aNULL:!eNULL:!LOW:!MD5:!EXP:!DSS:!PSK:!SRP:!kECDH:!kDH:!SEED 
SSLCompression Off 
SSLProtocol all -SSLv2 -SSLv3 

Is there some configuration/limit about allowed SSL ciphers in affwebservices' OAuth servlet? 
Environment:
12.52 SP1 
Resolution:
DE297147 - SSL Backchannel communication is using limited number of ciphers 

You are right, the 12.52.x affwebservices is using limited cipher suites resulting in SSL Handshake failure. 

This code was changed in 12.6 where we now retrieve ciphers from a new configuration file called SSLCipherConfig.properties. 

Also there were upgrade of BESAFE components SSLJ from 5.1 to 6.1.3 on R12.6 Access Gateway. 

This issue has also be fixed in the 12.52 SP1 CR9 agent to allow SSL BackChannel with more ciphersuites.