The remote version of QuickTime is affected by multiple overflow vulnerabilities.
The remote Mac OS X host is running a version of Quicktime prior to 7.1. The remote version of Quicktime is vulnerable to various integer and buffer overflows involving specially-crafted image and media files. An attacker may be able to leverage these issues to execute arbitrary code on the remote host by sending a malformed file to a victim and having it opened using QuickTime player.
Install version 7.1 or higher.