Apache restart fails with error "undefined symbol: CRYPTO_memcmp". How do we fix it ?

Solution Unverified - Updated -

Issue

  • Apache restart fails with :
httpd: Syntax error on line 152 of /d01/Xerox/apache2/conf/httpd.conf: Cannot load modules/mod_auth_cas.so into server: /usr/lib64/libssl.so.10: undefined symbol: CRYPTO_memcmp

Environment

  • Red Hat Enterprise Linux 6.3
  • openssl-1.0.0-25.el6_3.1.x86_64

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