Per sources, Apple will be issuing a March 24th Mac OS X Security Update, fixing security issues with Samba and OpenSSL:
The Security Update addresses a Samba vulnerablitiy which could allow unauthorized remote access to the host system. The Built-in Windows file sharing is based on the open source technology called Samba and is off by default in Mac OS X.
OpenSSL is also updated to address an issue in which RSA private keys can be compromised when the communicating over LAN's, internet2/Abilene, and interprocess communication on local machines.
