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 code responsible for parsing rec chunks within an AVI media file. By modifying specific values within the data structure a heap corruption condition can be triggered. An attacker can abuse this to execute arbitrary code under the context of the user running QuickTime.