"I was curious about 'Heartbleed' hearing a lot about it," David Passell acknowledged. He found some important info. "It apparently can infect Mavericks users and IOS 6.users. Since I am still in the "stone age" with Snow Leopard I am apparently not subject to it." Read zdnet
Sure enough, the article emphasizes that the fix is in Apple's 10.9.2 update for Mavericks. Vulnerability is not present in versions of OS X prior to OS X 10.9 Mavericks or iOS prior to iOS6.