OpenSSL 1.0.1g has been released to fix “A missing bounds check in the handling of the TLS heartbeat extension can be used to reveal up to 64kB of memory to a connected client or server. This issue did not affect versions of OpenSSL prior to 1.0.1.” known as the Heartbleed Bug
via InfoSec Handlers Diary Blog – OpenSSL CVE-2014-0160 Fixed.