If you do not use Splunk's own packaged libraries then you will have circumvented the defects and security fixes that have been addressed with Splunk's use of those dependent libraries, i.e. those identified in the Splunk release notes.
I would add the Splunk library path, /opt/splunk/lib, as one line into a text file (such as spunk.conf) and place that file in the /etc/ld.so.conf.d directory.
Then with root privilege run ldconfig.
You should then be able to use Splunks own bundled OpenSSL at /opt/splunk/bin/openssl
... View more