Apple has released a security update for Mac OS X called the "Security Update 2002-08-20." The update handles security issues with OpenSSL and some unspecified thing labeled "Security." From the notes in the Software Update control panel:
Security Update 2002-08-20 includes the following updated components which provide increased security to prevent unauthorized access to applications, servers, and the operating system.
You can get the update in your Software Update control panel.