With previous versions, the flaw could allow an attacker to inject more data into a particular memory location than the program could accommodate, thereby allowing the attacker to take over a computer. The new software, iTunes 4.7.1, is available at Apple's Web site.
The update is available for Mac OS X, Microsoft Windows XP and Microsoft Windows 2000.
Apple has faced fewer security issues than Microsoft, with its prevalent Windows operating system. Still, Apple has garnered some attention from hackers.
Last August, a Norwegian hacker published the Apple AirPort Express public key, which Apple uses for encrypting music transmitted from iTunes to wireless base stations.
