Only OpenSSL versions 1.0.1 and 1.0.2-beta releases (including 1.0.1f and 1.0.2-beta1) are affected by the "Heartbleed" bug (CVE-2014-0160). Versions below 1.0.1 (such as 0.9.8) are not affected.
Resolution
PGP Encryption Server (Symantec Encryption Management Server) includes the openssl package with version 0.9.8 which is not vulnerable to this attack.