Apple Security Advisory 2011-10-12-3 - OS X Lion has a security update available that addresses findings in Apache, a format string vulnerability in the Application Firewall, an arbitrary code execution vulnerability when viewing a malicious font via ATS, and 60+ other issues.
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Zero Day Initiative Advisory 11-250 - This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Quicktime. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the way Quicktime handles invalid Sample Duration values in the Time-To-Sample atoms. This value is used in the calculation of a loop counter. If this counter is too big it will result in a heap overflow that can cause remote code execution under the context of the current user.
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Apple Security Advisory 2011-08-03-1 - QuickTime version 7.7 has been made available to address multiple code execution, cross-origin, integer overflow, memory corruption, and other vulnerabilities.
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